Source Any Part Request Now

Multiple Purchase Options Request for Quote

NET30 Terms Apply for a Trade Account

Jaw Coupling Hubs

Filter


Jaw couplings are flexible couplings that connect two shafts at their ends to transmit power. They consist of jaw coupling hubs and spiders for handling diverse temperature ranges, speed of equipment and chemical conditions. Jaw coupling hubs are equipped with jaws for interlocking with each ot...her & providing a tight fit. Raptor Supplies offers a wide range of jaw coupling hubs from brands like Boston Gear, Dayton, Ruland Manufacturing, Lovejoy, TB Woods and Hydro Vacuum.Read more

StyleModelCoupling SizeBore SizeKeyway SizeLength through BoreOutside Dia.Hub LengthMaterialCoupling TypePrice
A68514410213L0509/16"1/8" x 1/16"0.62"1.08"1.1"Sintered IronJaw€6.76
RFQ
A68514446121L0503/8"3/32" x 3/64"0.62"1.08"1.1"Sintered IronJaw€6.76
RFQ
A68514444713L0507/16"3/32" x 3/64"0.62"1.08"1.1"Sintered IronJaw€6.76
RFQ
A68514444136L0503/8"1/8" x 1/16"0.62"1.08"1.1"Sintered IronJaw€13.36
A68514410211L0501/2"1/8" x 1/16"0.62"1.08"1.1"Sintered IronJaw€6.76
RFQ
A68514410424L0705/8"3/16" x 3/32"0.75"1.36"1.23"Sintered IronJaw€17.10
A68514410423L0709/16"1/8" x 1/16"0.75"1.36"1.23"Sintered IronJaw€10.50
RFQ
A68514451719L0703/4"1/8" x 1/16"0.75"1.36"1.23"Sintered IronJaw€17.10
A68514410426L0703/4"3/16" x 3/32"0.75"1.36"1.23"Sintered IronJaw€17.10
A68514410425L07011/16"3/16" x 3/32"0.75"1.36"1.23"Sintered IronJaw€10.50
RFQ
A68514447952L0701/2"3/16" x 3/32"0.75"1.36"1.23"Sintered IronJaw€10.50
RFQ
A68514451104L0705/8"5/32" x 5/64"0.75"1.36"1.23"Sintered IronJaw€10.50
RFQ
A68514476284L0709/16"1/4" x 1/8"0.75"1.36"1.23"Sintered IronJaw€79.10
RFQ
A68514444007L0707/16"3/32" x 3/64"0.75"1.36"1.23"Sintered IronJaw€17.10
A68514410421L0701/2"1/8" x 1/16"0.75"1.36"1.23"Sintered IronJaw€10.50
RFQ
A68514441985L0703/8"3/32" x 3/64"0.75"1.36"1.23"Sintered IronJaw€10.50
RFQ
A68514448829L0703/8"1/8" x 1/16"0.75"1.36"1.23"Sintered IronJaw€10.50
RFQ
A68514410689L07511/16"3/16" x 3/32"0.82"1.75"1.32"Sintered IronJaw€12.06
RFQ
A68514410687L0759/16"1/8" x 1/16"0.82"1.75"1.32"Sintered IronJaw€12.06
RFQ
A68514410692L0757/8"3/16" x 3/32"0.82"1.75"1.32"Sintered IronJaw€18.66
A68514476377L07517/32"1/8" x 1/16"0.82"1.75"1.32"Sintered IronJaw€186.66
RFQ
A68514437234L0753/8"3/32" x 3/64"0.82"1.75"1.32"Sintered IronJaw€12.06
RFQ
A68514435881L0753/4"1/8" x 1/16"0.82"1.75"1.32"Sintered IronJaw€12.06
RFQ
A68514410685L0751/2"1/8" x 1/16"0.82"1.75"1.32"Sintered IronJaw€18.66
A68514410691L07513/16"3/16" x 3/32"0.82"1.75"1.32"Sintered IronJaw€12.06
RFQ
StyleModelCoupling SizeBore SizeKeyway SizeLength through BoreOutside Dia.Hub LengthMaterialCoupling TypePrice
A68514441313L0509 mm3 mm x 1.4 mm15.75 mm27.43 mm27.94 mmSintered IronJaw€13.36
A68514441451L05015 mm5 mm x 2.3 mm15.75 mm27.43 mm27.94 mmSintered IronJaw€13.36
A68514441315L05012 mm4 mm x 1.8 mm15.75 mm27.43 mm27.94 mmSintered IronJaw€13.36
A68514441314L05011 mm4 mm x 1.8 mm15.75 mm27.43 mm27.94 mmSintered IronJaw€13.36
A68514441450L05010 mm3 mm x 1.4 mm15.75 mm27.43 mm27.94 mmSintered IronJaw€13.36
A68514441316L05014 mm5 mm x 2.3 mm15.75 mm27.43 mm27.94 mmSintered IronJaw€13.36
A68514456176L05016 mm5 mm x 2.3 mm15.75 mm27.43 mm27.94 mmSintered IronJaw€13.36
A68514445333L07017 mm5 mm x 2.3 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€10.50
RFQ
A68514441319L07019 mm6 mm x 2.8 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€10.50
RFQ
A68514476252L07012 mm1/8 mm x 1/16 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€33.36
RFQ
A68514449870L07010 mm3 mm x 1.4 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€17.10
A68514441453L07011 mm4 mm x 1.8 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€10.50
RFQ
A68514456177L0709 mm3 mm x 1.4 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€10.50
RFQ
A68514459724L07018 mm6 mm x 2.8 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€10.50
RFQ
A68514441454L07012 mm4 mm x 1.8 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€10.50
RFQ
A68514441317L07014 mm5 mm x 2.3 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€7.42
A68514441318L07016 mm5 mm x 2.3 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€10.50
RFQ
A68514441455L07015 mm5 mm x 2.3 mm19.05 mm34.54 mm31.24 mmSintered IronJaw€17.10
A68514441884L07518 mm6 mm x 2.8 mm20.83 mm44.45 mm33.53 mmSintered IronJaw€18.66
A68514441322L07516 mm5 mm x 2.3 mm20.83 mm44.45 mm33.53 mmSintered IronJaw€12.06
RFQ
A68514444153L07512 mm4 mm x 1.8 mm20.83 mm44.45 mm33.53 mmSintered IronJaw€18.66
A68514441458L07515 mm5 mm x 2.3 mm20.83 mm44.45 mm33.53 mmSintered IronJaw€12.06
RFQ
A68514441459L07520 mm6 mm x 2.8 mm20.83 mm44.45 mm33.53 mmSintered IronJaw€18.66
A68514441321L07514 mm5 mm x 2.3 mm20.83 mm44.45 mm33.53 mmSintered IronJaw€12.06
RFQ
A68514450811L07511 mm4 mm x 1.8 mm20.83 mm44.45 mm33.53 mmSintered IronJaw€18.66
StyleModelCoupling SizeBore SizeKeyway SizeLength through BoreOutside Dia.Hub LengthMaterialCoupling TypePrice
A68514410126L0353/16"No Keyway0.27"0.63"0.55"Sintered IronJaw€13.36
A68514410127L0351/4"No Keyway0.27"0.63"0.55"Sintered IronJaw€6.76
RFQ
A68514424687L0353/8"No Keyway0.27"0.63"0.55"Sintered IronJaw€13.36
A68514410124L0351/8"No Keyway0.27"0.63"0.55"Sintered IronJaw€6.76
RFQ
A68514410128L0355/16"No Keyway0.27"0.63"0.55"Sintered IronJaw€6.76
RFQ
A68514476512L05015/32"No Keyway0.62"1.08"1.1"Sintered IronJaw€129.40
RFQ
A68514410207L0505/16"No Keyway0.62"1.08"1.1"Sintered IronJaw€13.36
A68514410209L0507/16"No Keyway0.62"1.08"1.1"Sintered IronJaw€13.36
A68514410208L0503/8"No Keyway0.62"1.08"1.1"Sintered IronJaw€13.36
A68514410214L0505/8"No Keyway0.62"1.08"1.1"Sintered IronJaw€13.36
A68514410206L0501/4"No Keyway0.62"1.08"1.1"Sintered IronJaw€13.36
A68514410210L0501/2"No Keyway0.62"1.08"1.1"Sintered IronJaw€13.36
A68514410212L0509/16"No Keyway0.62"1.08"1.1"Sintered IronJaw€6.76
RFQ
A68514410418L0703/8"No Keyway0.75"1.36"1.23"Sintered IronJaw€10.50
RFQ
A68514410595L0701/2"No Keyway0.75"1.36"1.23"Sintered IronJaw€13.72
RFQ
A68514424771L0705/8"No Keyway0.75"1.36"1.23"Sintered IronJaw€10.50
RFQ
A68514410417L0705/16"No Keyway0.75"1.36"1.23"Sintered IronJaw€10.50
RFQ
A68514410416L0701/4"No Keyway0.75"1.36"1.23"Sintered IronJaw€17.10
A68514410419L0707/16"No Keyway0.75"1.36"1.23"Sintered IronJaw€17.10
A68514410420L0701/2"No Keyway0.75"1.36"1.23"Sintered IronJaw€17.10
A68514444322L0755/8"No Keyway0.82"1.75"1.32"Sintered IronJaw€12.06
RFQ
A68514410680L0751/4"No Keyway0.82"1.75"1.32"Sintered IronJaw€7.14
A68514410682L0753/8"No Keyway0.82"1.75"1.32"Sintered IronJaw€18.66
A68514410686L0759/16"No Keyway0.82"1.75"1.32"Sintered IronJaw€12.06
RFQ
A68514410681L0755/16"No Keyway0.82"1.75"1.32"Sintered IronJaw€12.06
RFQ
StyleModelCoupling SizeBore SizeKeyway SizeLength through BoreMaterialHub LengthNominal TorqueCoupling TypePrice
A68514447419L0355 mmNo Keyway6.86 mmSintered Iron13.97 mm0.4 NmJaw€13.36
A68514460679L0357 mmNo Keyway6.86 mmSintered Iron13.97 mm0.4 NmJaw€6.76
RFQ
A68514445872L0356 mmNo Keyway6.86 mmSintered Iron13.97 mm0.4 NmJaw€13.36
A68514455169L0358 mmNo Keyway6.86 mmSintered Iron13.97 mm0.4 NmJaw€6.76
RFQ
A68514441850L0354 mmNo Keyway6.86 mmSintered Iron13.97 mm0.4 NmJaw€6.76
RFQ
A68514448510L05012 mmNo Keyway15.75 mmSintered Iron27.94 mm2.97 NmJaw€6.76
RFQ
A68514441460L0508 mmNo Keyway15.75 mmSintered Iron27.94 mm2.97 NmJaw€13.36
A68514410216L05010 mmNo Keyway15.75 mmSintered Iron27.94 mm2.97 NmJaw€6.76
RFQ
A68514446214L0505 mmNo Keyway15.75 mmSintered Iron27.94 mm2.97 NmJaw€6.76
RFQ
A68514460708L05015 mmNo Keyway15.75 mmSintered Iron27.94 mm2.97 NmJaw€6.76
RFQ
A68514458036L05014 mmNo Keyway15.75 mmSintered Iron27.94 mm2.97 NmJaw€6.76
RFQ
A68514410215L0507 mmNo Keyway15.75 mmSintered Iron27.94 mm2.97 NmJaw€13.36
A68514450351L0506 mmNo Keyway15.75 mmSintered Iron27.94 mm2.97 NmJaw€13.36
A68514441452L07010 mmNo Keyway19.05 mmSintered Iron24.89 mm4.88 NmJaw€10.50
RFQ
A68514447505L07014 mmNo Keyway19.05 mmSintered Iron24.89 mm4.88 NmJaw€10.50
RFQ
A68514458803L0707 mmNo Keyway19.05 mmSintered Iron24.89 mm4.88 NmJaw€10.50
RFQ
A68514446151L0708 mmNo Keyway19.05 mmSintered Iron24.89 mm4.88 NmJaw€10.50
RFQ
A68514451562L07012 mmNo Keyway19.05 mmSintered Iron24.89 mm4.88 NmJaw€10.50
RFQ
A68514410693L07515 mmNo Keyway20.83 mmSintered Iron33.53 mm10.17 NmJaw€12.06
RFQ
A68514441456L07510 mmNo Keyway20.83 mmSintered Iron33.53 mm10.17 NmJaw€12.06
RFQ
A68514410777L09019 mmNo Keyway20.83 mmSintered Iron33.53 mm16.27 NmJaw€18.50
RFQ
A68514441461L09014 mmNo Keyway20.83 mmSintered Iron33.53 mm16.27 NmJaw€25.10
A68514460945L0908 mmNo Keyway20.83 mmSintered Iron33.53 mm16.27 NmJaw€18.50
RFQ
A68514448276L09012 mmNo Keyway20.83 mmSintered Iron33.53 mm16.27 NmJaw€18.50
RFQ
A68514441465L09514 mmNo Keyway25.4 mmSintered Iron38.61 mm21.92 NmJaw€28.48
RFQ
StyleModelCoupling SizeBore SizeKeyway SizeHub StyleOutside Dia.Overall Coupling LengthHub MaterialCoupling TypePrice
A68514464117421-7/8"1/2" x 1/4"B3.74"4.96"Cast IronJaw€182.92
RFQ
A68514465858421-1/8"1/4" x 1/8"A3.74"4.96"Cast IronJaw€182.92
A68514465857421-3/8"5/16" x 5/32"A3.74"4.96"Cast IronJaw€182.92
RFQ
A68514466879421-1/4"5/16" x 5/32"A3.74"4.96"Cast IronJaw€182.92
RFQ
A68514466878421-5/8"3/8" x 3/16"B3.74"4.96"Cast IronJaw€182.92
RFQ
A68514466428421-5/8"3/8" x 3/16"A3.74"4.96"Cast IronJaw€182.92
RFQ
A68514464116421-1/2"3/8" x 3/16"B3.74"4.96"Cast IronJaw€182.92
RFQ
A68514465818481-7/8"1/2" x 1/4"A4.13"5.51"Cast IronJaw€249.44
RFQ
A68514464146482"1/2" x 1/4"B4.13"5.51"Cast IronJaw€249.44
RFQ
A68514465567481-5/8"3/8" x 3/16"A4.13"5.51"Cast IronJaw€249.44
RFQ
A68514465817482-1/8"1/2" x 1/4"B4.13"5.51"Cast IronJaw€249.44
RFQ
A68514464147481"1/4" x 1/8"A4.13"5.51"Cast IronJaw€249.44
RFQ
A68514464124552-3/8"5/8" x 5/16"B4.72"6.3"Cast IronJaw€307.64
A68514465645551-1/2"3/8" x 3/16"A4.72"6.3"Cast IronJaw€307.64
RFQ
A68514466034752-7/8"3/4" x 3/8"A6.3"8.27"Cast IronJaw€550.86
A68514465835752-1/8"1/2" x 1/4"A6.3"8.27"Cast IronJaw€550.86
A68514465815752-3/8"5/8" x 5/16"A6.3"8.27"Cast IronJaw€550.86
RFQ
A68514465455751-1/2"3/8" x 3/16"A6.3"8.27"Cast IronJaw€550.86
RFQ
A68514477499752-1/2"5/8" x 5/16"B6.3"8.27"Cast IronJaw€550.86
RFQ
A6851446206390UnboredNo KeywayB7.87"9.65"Cast IronJaw€706.76
RFQ
LOVEJOY -

CJ Series Hubs, Cast Iron, A And B Style Metric Bores

Flexible couplings are designed for linking two rotating shafts which are not properly aligned, for transmitting rotational power (torque) from one shaft to another. Flexible couplings comprise two hubs and a spider, with each hub being attached to a shaft while the spider flexes between the hubs for accommodating the misalignment between shafts. Shaft misalignments are radial, parallel or angular, and cause complications while transferring rotational power from one shaft to the other, in the form of loads, vibrations, stresses and other forces which change as per the type of misalignment.
Lovejoy coupling hubs are ideal for internal gas combustion engine and electrical motor applications. These Lovejoy CJ coupling hubs feature a curved jaw profile that helps in concentrating torque to the central region of the spider's limbs, thereby improving the efficiency of the elastomeric material. The three piece design of Lovejoy CJ coupling hubs makes them compatible with both radially and axially misaligned spiders.
These Lovejoy CJ coupling hubs are made of cast iron to ensure high compression strength and resisting corrosion on exposed surfaces. These Lovejoy CJ coupling hubs do not require any lubrication and prevent metal to metal contact for reduced friction. Lovejoy CJ coupling hubs, when assembled to form CJ Series couplings, deliver torque ranging from 67 to 247800 inch-lb.

StyleModelCoupling SizeBore SizeKeyway SizeHub StyleOutside Dia.Overall Coupling LengthHub MaterialCoupling TypePrice
A6851446205142/5532 mm10 mm x 3.3 mmA95 mm72.9 mmCast IronJaw€182.92
RFQ
A6851446205442/5542 mm12 x 3.3 mmB95 mm72.9 mmCast IronJaw€182.92
RFQ
A6851446205642/5548 mm14 mm x 3.8 mmB95 mm72.9 mmCast IronJaw€182.92
RFQ
A6851446205842/5555 mm16 x 4.3 mmB95 mm72.9 mmCast IronJaw€182.92
RFQ
A6851446241442/55UnboredNo KeywayA95 mm72.9 mmCast IronJaw€141.34
RFQ
A6851446205042/5530 mm8 mm x 3.3 mmA95 mm72.9 mmCast IronJaw€182.92
RFQ
A6851446205242/5535 mm10 mm x 3.3 mmA95 mm72.9 mmCast IronJaw€182.92
RFQ
A6851446205342/5538 mm10 mm x 3.3 mmA95 mm72.9 mmCast IronJaw€182.92
RFQ
A6851446204842/55UnboredNo KeywayB95 mm72.9 mmCast IronJaw€141.34
RFQ
A6851446205948/60UnboredNo KeywayB104.9 mm80.26 mmCast IronJaw€197.48
RFQ
A6851446241548/60UnboredNo KeywayA104.9 mm80.26 mmCast IronJaw€197.48
RFQ
A6851446689748/6032 mm10 mm x 3.3 mmA104.9 mm80.26 mmCast IronJaw€249.44
RFQ
A6851446241655/70UnboredNo KeywayA119.89 mm90.93 mmCast IronJaw€245.28
RFQ
A6851446206165/75UnboredNo KeywayB134.87 mm105.41 mmCast IronJaw€340.90
RFQ
A6851446241765/75UnboredNo KeywayA134.87 mm105.41 mmCast IronJaw€340.90
RFQ
A6851446241875/90UnboredNo KeywayA160.02 mm119.89 mmCast IronJaw€498.88
RFQ
A6851446206275/90UnboredNo KeywayB160.02 mm119.89 mmCast IronJaw€498.88
A685144624199014 mmNo KeywayA199.9 mm245.11 mmCast IronJaw€706.76
RFQ
StyleModelCoupling SizeBore SizeKeyway SizeHub StyleOutside Dia.Overall Coupling LengthHub MaterialCoupling TypePrice
A68514461984145/16"No KeywayB1.18"1.38"Powder MetalJaw€27.98
A68514476356191/2"No KeywayA1.57"2.6"Powder MetalJaw€33.26
RFQ
A68514461999197/16"3/16" x 3/32"B1.57"2.6"Powder MetalJaw€33.26
RFQ
A68514476359195/8"3/16" x 3/32"A1.57"2.6"Powder MetalJaw€33.26
RFQ
A68514476357193/4"1/8" x 1/16"A1.57"2.6"Powder MetalJaw€33.26
RFQ
A68514476365243/4"3/16" x 3/32"A2.2"3.07"Powder MetalJaw€49.88
RFQ
A68514462010241-1/8"1/4" x 1/8"B2.2"3.07"Powder MetalJaw€49.88
RFQ
A68514462009241"1/4" x 1/8"B2.2"3.07"Powder MetalJaw€49.88
RFQ
A68514462011241-1/4"1/4" x 1/8"B2.2"3.07"Powder MetalJaw€49.88
RFQ
A68514476364245/8"3/16" x 3/32"A2.2"3.07"Powder MetalJaw€49.88
RFQ
A68514476362241/2"1/8" x 1/16"A2.2"3.07"Powder MetalJaw€49.88
RFQ
A68514462014283/4"3/16" x 3/32"A2.56"3.54"Powder MetalJaw€66.52
RFQ
A68514462013285/8"3/16" x 3/32"A2.56"3.54"Powder MetalJaw€66.52
RFQ
A68514462016281"1/4" x 1/8"B2.56"3.54"Powder MetalJaw€66.52
RFQ
A68514462018281-1/4"1/4" x 1/8"B2.56"3.54"Powder MetalJaw€66.52
RFQ
A68514462017281-1/8"1/4" x 1/8"B2.56"3.54"Powder MetalJaw€73.12
A68514462015287/8"3/16" x 3/32"A2.56"3.54"Powder MetalJaw€66.52
RFQ
A68514462012285/8"No KeywayA2.56"3.54"Powder MetalJaw€66.52
RFQ
A68514462019281-3/8"5/16" x 5/32"B2.56"3.54"Powder MetalJaw€66.52
RFQ
A68514466873281 1/2"3/8" x 3/16"B2.56"3.54"Powder MetalJaw€66.52
RFQ
A68514462028381-1/2"3/8" x 3/16"B3.15"4.49"Powder MetalJaw€87.30
RFQ
A68514462025381-1/8"1/4" x 1/8"A3.15"4.49"Powder MetalJaw€87.30
RFQ
A68514462024381"1/4" x 1/8"A3.15"4.49"Powder MetalJaw€87.30
RFQ
A68514462023387/8"3/16" x 3/32"A3.15"4.49"Powder MetalJaw€87.30
RFQ
A68514462022383/4"3/16" x 3/32"A3.15"4.49"Powder MetalJaw€87.30
RFQ
StyleModelCoupling SizeBore SizeKeyway SizeHub StyleOutside Dia.Overall Coupling LengthHub MaterialCoupling TypePrice
A68514472002-25 mm8 mm x 3.3 mmA80 mm114.05 mmPowder MetalJaw€87.30
A685144725331914 mm5 mm x 2.3 mmA39.88 mm66.04 mmPowder MetalJaw€33.26
RFQ
A685144725432420 mm6 mm x 2.8 mmA55.88 mm77.98 mmPowder MetalJaw€49.88
RFQ
A685144725382414 mm5 mm x 2.3 mmA55.88 mm77.98 mmPowder MetalJaw€49.88
RFQ
A685144725422419 mm6 mm x 2.8 mmA55.88 mm77.98 mmPowder MetalJaw€49.88
RFQ
A685144720063835 mm10 mm x 3.3 mmA80 mm114.05 mmPowder MetalJaw€93.90
A685144720043830 mm8 mm x 3.3 mmA80 mm114.05 mmPowder MetalJaw€87.30
RFQ
A685144720073838 mm10 mm x 3.3 mmA80 mm114.05 mmPowder MetalJaw€116.78
A685144720053832 mm10 mm x 3.3 mmA80 mm114.05 mmPowder MetalJaw€87.30
RFQ
StyleModelCoupling SizeBore SizeKeyway SizeHub StyleOutside Dia.Overall Coupling LengthMaterialCoupling TypePrice
A685144611511412 mm4 mm x 1.8 mmB29.97 mm22.35 mmPowder MetalJaw€27.98
A6851446115419/24UnboredNo KeywayB39.88 mm38.86 mmPowder MetalJaw€19.74
RFQ
A6851446115619/2419 mm6 mm x 2.8 mmB39.88 mm38.86 mmPowder MetalJaw€33.26
RFQ
A6851446115719/2424 mm8 mm x 3.3 mmB39.88 mm38.86 mmPowder MetalJaw€33.26
RFQ
A6851446110424/3224 mm8 mm x 3.3 mmB55.88 mm45.72 mmPowder MetalJaw€56.48
A6851446088024/32UnboredNo KeywayB55.88 mm45.72 mmPowder MetalJaw€31.18
RFQ
A6851446110524/3225 mm8 mm x 3.3 mmB55.88 mm45.72 mmPowder MetalJaw€49.88
RFQ
A6851446110624/3228 mm8 mm x 3.3 mmB55.88 mm45.72 mmPowder MetalJaw€49.88
RFQ
A6851446088128/38UnboredNo KeywayB65.02 mm52.58 mmPowder MetalJaw€49.88
RFQ
A6851446116528/3825 mm8 mm x 3.3 mmB65.02 mm52.58 mmPowder MetalJaw€66.52
RFQ
A6851446111128/3828 mm8 mm x 3.3 mmB65.02 mm52.58 mmPowder MetalJaw€66.52
RFQ
A6851446111328/3838 mm10 mm x 3.3 mmB65.02 mm52.58 mmPowder MetalJaw€66.52
RFQ
A6851446532028/3832 mm10 mm x 3.3 mmB65.02 mm52.58 mmPowder MetalJaw€66.52
RFQ
A6851446090638/4542 mm12 mm x 3.3 mmB80 mm65.79 mmPowder MetalJaw€87.30
RFQ
StyleModelCoupling SizeBore SizeKeyway SizeLength through BoreOutside Dia.Hub LengthMaterialPrice
A68514411581LC1001-1/4"1/4" x 1/8"1.38"2.53"2.13"Sintered Iron€74.78
A68514411832LC1107/8"3/16" x 3/32"1.69"3.31"2.56"Sintered Iron€90.62
A68514411842LC1101-3/8"5/16" x 5/32"1.69"3.31"2.56"Sintered Iron€90.62
RFQ
A68514456566LC1107/8"1/4" x 1/8"1.69"3.31"2.56"Sintered Iron€90.62
A68514412069LC1501"1/4" x 1/8"1.75"3.75"2.75"Sintered Iron€116.82
RFQ
A68514412329LC1901-3/8"5/16" x 5/32"1.94"4.5"2.94"Sintered Iron€204.96
RFQ
A68514444064LC1902-1/8"1/2" x 1/4"1.94"4.5"2.94"Sintered Iron€204.96
RFQ
A68514412332LC1901-1/2"3/8" x 3/16"1.94"4.5"2.94"Sintered Iron€204.96
RFQ
A68514412337LC1901-7/8"1/2" x 1/4"1.94"4.5"2.94"Sintered Iron€204.96
RFQ
A68514412466LC2251-1/2"3/8" x 3/16"2.19"5"3.19"Cast Iron€236.98
RFQ
A68514412472LC2251-7/8"1/2" x 1/4"2.19"5"3.19"Cast Iron€236.98
LOVEJOY -

LC Type Hubs With Keyway, Metric Bores

Lovejoy LC style jaw couplings are designed for accommodating shaft misalignment & power transmission for gearboxes, electric pumps, motors, compressors and blowers. These jaw couplings feature radially removable snap wrap elastomer for ease-of-maintenance, collar attachment for securely holding centre element in place and sintered iron construction for safe operation even upon elastomer failure. Choose from a broad range of these couplings, available in speed ratings of 5000 & 9000 rpm on Raptor Supplies.

StyleModelCoupling SizeBore SizeKeyway SizeLength through BoreOutside Dia.MaterialNominal TorquePrice
A68514458560LC09519 mm6 mm x 2.8 mm25.4 mm53.59 mmSintered Iron21.92 Nm€43.80
A68514458575LC19028 mm8 mm x 3.3 mm49.28 mm114.3 mmSintered Iron195.24 Nm€204.96
StyleModelCoupling SizeBore SizeKeyway SizeHub StyleLength through BoreMaterialNominal TorqueMax. SpeedPrice
A68514449706AL0501/2"1/8" x 1/16"10.62"Aluminum26.3 In.Lbs.18000 rpm€14.60
A68514410491AL0703/4"3/16" x 3/32"10.75"Aluminum43.2 In.Lbs.14000 rpm€18.76
A68514410473AL0701/2"1/8" x 1/16"10.75"Aluminum43.2 In.Lbs.14000 rpm€18.76
A68514410482AL0705/8"3/16" x 3/32"10.75"Aluminum43.2 In.Lbs.14000 rpm€18.76
A68514410639AL0755/8"3/16" x 3/32"20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514410641AL07513/16"3/16" x 3/32"20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514410640AL0753/4"3/16" x 3/32"20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514410635AL0751/2"1/8" x 1/16"20.81"Aluminum90 In.Lbs.11000 rpm€10.82
A68514410642AL0757/8"3/16" x 3/32"20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514447835AL0753/4"1/8" x 1/16"20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514410800AL0903/4"3/16" x 3/32"20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514410802AL0907/8"3/16" x 3/32"20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514410798AL0905/8"3/16" x 3/32"20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514447725AL0903/4"1/8" x 1/16"20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514444812AL0909/16"1/8" x 1/16"20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514476519AL0905/8"1/8"20.91"Aluminum144 In.Lbs.9000 rpm€72.70
A68514410796AL0901/2"1/8" x 1/16"20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514417853AL09513/16"3/16" x 3/32"11"Aluminum194 In.Lbs.9000 rpm€37.98
A68514417858AL0951-1/8"1/4" x 1/8"11"Aluminum194 In.Lbs.9000 rpm€37.98
A68514417856AL0951"1/4" x 1/8"11"Aluminum194 In.Lbs.9000 rpm€37.98
A68514417857AL0951-1/16"1/4" x 1/8"11"Aluminum194 In.Lbs.9000 rpm€37.98
A68514417851AL09511/16"3/16" x 3/32"11"Aluminum194 In.Lbs.9000 rpm€37.98
A68514417848AL0951/2"1/8" x 1/16"11"Aluminum194 In.Lbs.9000 rpm€37.98
A68514417852AL0953/4"3/16" x 3/32"11"Aluminum194 In.Lbs.9000 rpm€37.98
A68514417850AL0955/8"3/16" x 3/32"11"Aluminum194 In.Lbs.9000 rpm€37.98
StyleModelCoupling SizeBore SizeKeyway SizeHub StyleLength through BoreMaterialNominal TorqueMax. SpeedPrice
A68514462906AL07015 mm5 mm x 2.3 mm119.05 mmAluminum4.88 Nm14000 rpm€18.76
A68514456487AL07012 mm4 mm x 1.8 mm119.05 mmAluminum4.88 Nm14000 rpm€18.76
A68514465694AL07011 mm4 mm x 1.8 mm119.05 mmAluminum4.88 Nm14000 rpm€18.76
A68514465696AL07014 mm5 mm x 2.3 mm119.05 mmAluminum4.88 Nm14000 rpm€12.16
RFQ
A68514465698AL07019 mm6 mm x 2.8 mm119.05 mmAluminum4.88 Nm14000 rpm€18.76
A68514459394AL07520 mm6 mm x 2.8 mm220.57 mmAluminum10.17 Nm11000 rpm€10.04
A68514464655AL07512 mm4 mm x 1.8 mm220.57 mmAluminum10.17 Nm11000 rpm€19.90
A68514447427AL07519 mm6 mm x 2.8 mm220.57 mmAluminum10.17 Nm11000 rpm€19.90
A68514449633AL07515 mm5 mm x 2.3 mm220.57 mmAluminum10.17 Nm11000 rpm€19.90
A68514466758AL07516 mm5 mm x 2.3 mm220.57 mmAluminum10.17 Nm11000 rpm€19.90
A68514451098AL07511 mm4 mm x 1.8 mm220.57 mmAluminum10.17 Nm11000 rpm€19.90
A68514447302AL07514 mm5 mm x 2.3 mm220.57 mmAluminum10.17 Nm11000 rpm€19.90
A68514441924AL07510 mm3 mm x 1.4 mm220.57 mmAluminum10.17 Nm11000 rpm€19.90
A68514456514AL09010 mm3 mm x 1.4 mm223.11 mmAluminum16.27 Nm9000 rpm€26.96
A68514458620AL09011 mm4 mm x 1.8 mm223.11 mmAluminum16.27 Nm9000 rpm€26.96
A68514460429AL09012 mm4 mm x 1.8 mm223.11 mmAluminum16.27 Nm9000 rpm€26.96
A68514458621AL09014 mm5 mm x 2.3 mm223.11 mmAluminum16.27 Nm9000 rpm€26.96
A68514458622AL09015 mm5 mm x 2.3 mm223.11 mmAluminum16.27 Nm9000 rpm€26.96
A68514444679AL09019 mm6 mm x 2.8 mm223.11 mmAluminum16.27 Nm9000 rpm€26.96
A68514460887AL09017 mm5 mm x 2.3 mm223.11 mmAluminum16.27 Nm9000 rpm€26.96
A68514456800AL09514 mm5 mm x 2.3 mm125.4 mmAluminum21.92 Nm9000 rpm€37.98
A68514448347AL09520 mm6 mm x 2.8 mm125.4 mmAluminum21.92 Nm9000 rpm€37.98
A68514445736AL09524 mm8 mm x 3.3 mm125.4 mmAluminum21.92 Nm9000 rpm€37.98
A68514465469AL09525 mm8 mm x 3.3 mm125.4 mmAluminum21.92 Nm9000 rpm€37.98
A68514447012AL09519 mm6 mm x 2.8 mm125.4 mmAluminum21.92 Nm9000 rpm€37.98
LOVEJOY -

AL Type Hubs Without Keyway, Inch Bores

The AL-Type hubs by Lovejoy are used with coupling spiders to create AL Type couplings. These lightweight Lovejoy hubs feature aluminium construction, a maximum rotational speed of 18000 rpm and a nominal torque rating of up to 1240 in.lb. They do not require lubrication and are interchangeable with all standard coupling hubs. These quality AL Type hubs are available in different bore diameters, keyway sizes and overall lengths.

StyleModelCoupling SizeBore SizeKeyway SizeHub StyleLength through BoreMaterialNominal TorqueMax. SpeedPrice
A68514410257AL0501/2"No Keyway10.62"Aluminum26.3 In.Lbs.18000 rpm€14.60
A68514410254AL0503/8"No Keyway10.62"Aluminum26.3 In.Lbs.18000 rpm€14.60
A68514410259AL0505/8"No Keyway10.62"Aluminum26.3 In.Lbs.18000 rpm€14.60
A68514410253AL0505/16"No Keyway10.62"Aluminum26.3 In.Lbs.18000 rpm€14.60
A68514410256AL0507/16"No Keyway10.62"Aluminum26.3 In.Lbs.18000 rpm€14.60
A68514410252AL0501/4"No Keyway10.62"Aluminum26.3 In.Lbs.18000 rpm€14.60
A68514410463AL0701/4"No Keyway10.75"Aluminum43.2 In.Lbs.14000 rpm€18.76
A68514410469AL0707/16"No Keyway10.75"Aluminum43.2 In.Lbs.14000 rpm€18.76
A68514410480AL0705/8"No Keyway10.75"Aluminum43.2 In.Lbs.14000 rpm€18.76
A68514410471AL0701/2"No Keyway10.75"Aluminum43.2 In.Lbs.14000 rpm€18.76
A68514410466AL0703/8"No Keyway10.75"Aluminum43.2 In.Lbs.14000 rpm€18.76
A68514410464AL0705/16"No Keyway10.75"Aluminum43.2 In.Lbs.14000 rpm€18.76
A68514410630AL0751/4"No Keyway20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514410634AL0751/2"No Keyway20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514410633AL0757/16"No Keyway20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514410637AL0759/16"No Keyway20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514410632AL0753/8"No Keyway20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514461817AL0755/8"No Keyway20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514410631AL0755/16"No Keyway20.81"Aluminum90 In.Lbs.11000 rpm€19.90
A68514444004AL0905/8"No Keyway20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514410795AL0901/2"No Keyway20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514410791AL0901/4"No Keyway20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514410793AL0903/8"No Keyway20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514410797AL0909/16"No Keyway20.91"Aluminum144 In.Lbs.9000 rpm€26.96
A68514410794AL0907/16"No Keyway20.91"Aluminum144 In.Lbs.9000 rpm€26.96
LOVEJOY -

AL Type Hubs Without Keyway, Metric Bores

Lovejoy AL Type jaw coupling hubs without keyway are used to link two rotating shafts for torque transmission from one shaft to the other. These jaw coupling hubs are made of aluminum for light weight and corrosion resistance. They come equipped with a SOX (NBR) rubber elastomer spider capable of being operated at temperatures ranging from -40 to 100 degrees C.

StyleModelCoupling SizeBore SizeKeyway SizeHub StyleLength through BoreMaterialNominal TorqueMax. SpeedPrice
A68514448973AL0758 mmNo Keyway220.57 mmAluminum10.17 Nm11000 rpm€11.00
A68514456137AL07520 mmNo Keyway220.57 mmAluminum10.17 Nm11000 rpm€19.90
StyleModelCoupling SizeBore SizeKeyway SizeThreadLength through BoreOutside Dia.Hub StyleMaterialPrice
A68514426043C2261-7/8"1/2" x 1/4"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514426038C2261-3/8"5/16" x 5/32"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514426042C2261-3/4"3/8" x 3/16"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514426046C2262-1/4"1/2" x 1/4"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514426037C2261-1/4"1/4" x 1/8"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514426036C2261-1/8"1/4" x 1/8"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514426040C2261-1/2"3/8" x 3/16"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514426045C2262-1/8"1/2" x 1/4"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514426047C2262-3/8"5/8" x 5/16"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514426044C2262"1/2" x 1/4"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514426041C2261-5/8"3/8" x 3/16"1/2-132.75"5.15"3Cast Iron€310.32
RFQ
A68514446120C2762-1/2"5/8" x 5/16"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514426064C2762-7/8"3/4" x 3/8"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514426055C2761-3/4"3/8" x 3/16"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514426050C2761-1/8"1/4" x 1/8"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514446755C2762-5/8"5/8" x 5/16"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514426053C2761-1/2"3/8" x 3/16"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514426051C2761-1/4"1/4" x 1/8"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514426054C2761-5/8"3/8" x 3/16"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514426057C2762"1/2" x 1/4"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514426052C2761-3/8"5/16" x 5/32"1/2-133.12"6.18"3Cast Iron€387.90
A68514426060C2762-3/8"5/8" x 5/16"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514444547C2762-1/4"1/2" x 1/4"1/2-133.12"6.18"3Cast Iron€387.90
RFQ
A68514451998C2802-1/2"5/8" x 5/16"1/2-133.12"7.5"3Cast Iron€440.32
RFQ
A68514448194C2802"1/2" x 1/4"1/2-133.12"7.5"3Cast Iron€440.32
RFQ
LOVEJOY -

C Type Hubs With Keyway, Metric Bores

Lovejoy C type jaw couplings are suitable for providing shaft-to-shaft connection for power transmission and accommodating parallel & angular misalignment in industrial machinery, electric motors and compressors. These higher torque jaw couplings feature radially removable elastomeric cushions for ease-of-maintenance, no metal to metal contact for wear minimisation and cast iron construction for providing resistance against oil, sand, dirt, grease & moisture, thereby ensuring safe operation even upon elastomeric cushion failure. Choose from an extensive range of these jaw type couplings, available in 3500 & 4200 rpm variants on Raptor Supplies.

StyleModelCoupling SizeBore SizeKeyway SizeLength through BoreOutside Dia.Hub StyleMaterialNominal TorquePrice
A68514462792C22630 mm8 mm x 3.3 mm69.85 mm130.81 mm3Cast Iron337.6 Nm€310.32
RFQ
A68514447265C27660 mm18 mm x 4.4 mm79.25 mm156.97 mm3Cast Iron532.84 Nm€387.90
RFQ
A68514459032C27670 mm20 mm x 4.9 mm79.25 mm156.97 mm3Cast Iron532.84 Nm€387.90
RFQ
A68514445219C27642 mm12 mm x 3.3 mm79.25 mm156.97 mm3Cast Iron532.84 Nm€387.90
A68514449378C28060 mm18 mm x 4.4 mm79.25 mm190.5 mm3Cast Iron854.17 Nm€440.32
RFQ
A68514449012C28055 mm16 mm x 4.3 mm79.25 mm190.5 mm3Cast Iron854.17 Nm€440.32
A68514454363C28590 mm25 mm x 5.4 mm95.25 mm215.9 mm3Cast Iron1037.43 Nm€545.16
RFQ
A68514447813C29575 mm20 mm x 4.9 mm95.25 mm231.65 mm3Cast Iron1281.25 Nm€733.86
RFQ
A68514462695C295595 mm25 mm x 5.4 mm107.95 mm231.65 mm3Cast Iron2135.42 Nm€838.70
RFQ
LOVEJOY -

SS Type Hubs With Keyway, Inch Bores

Lovejoy jaw type couplings are designed for light-, medium- and heavy-duty electrical motor and internal combustion power transmission applications. These SS type couplings feature fail-safe stainless-steel construction that continues to perform even if the elastomer fails. They come with passivated finished bores to offer added rust protection and can accommodate both angular and parallel shaft misalignments. These units are interchangeable with L and AL line of hubs and are available in overall lengths ranging from 2 to 4.2 inches on Raptor Supplies.

StyleModelCoupling SizeBore SizeKeyway SizeLength through BoreOutside Dia.MaterialHub LengthCoupling TypePrice
A68514470009SS0753/4"3/16" x 3/32"0.82"1.36"Stainless Steel1.32"Jaw€110.54
A68514470008SS0755/8"3/16" x 3/32"0.82"1.36"Stainless Steel1.32"Jaw€110.54
A68514470007SS0751/2"1/8" x 1/16"0.82"1.36"Stainless Steel1.32"Jaw€110.54
A68514470016SS0951-1/8"1/4" x 1/8"1"2.11"Stainless Steel1.52"Jaw€135.48
A68514470012SS0955/8"3/16" x 3/32"1"2.11"Stainless Steel1.52"Jaw€135.48
A68514470011SS0951/2"1/8" x 1/16"0.82"1.36"Stainless Steel1.34"Jaw€135.48
A68514470014SS0957/8"3/16" x 3/32"1"2.54"Stainless Steel1.52"Jaw€135.48
A68514470015SS0951"1/4" x 1/8"1"2.11"Stainless Steel1.52"Jaw€135.48
A68514470013SS0953/4"3/16" x 3/32"1"2.11"Stainless Steel1.52"Jaw€135.48
A68514470018SS1007/8"3/16" x 3/32"1.38"2.54"Stainless Steel2.09"Jaw€158.34
A68514470022SS1001-3/8"5/16" x 5/32"1.75"2.54"Stainless Steel2.46"Jaw€158.34
A68514470017SS1003/4"3/16" x 3/32"1.38"2.54"Stainless Steel2.09"Jaw€158.34
A68514470020SS1001-1/8"1/4" x 1/8"1.38"2.54"Stainless Steel2.09"Jaw€158.34
A68514470019SS1001"1/4" x 1/8"1.38"2.54"Stainless Steel2.09"Jaw€158.34
A68514470025SS1101-1/4"1/4" x 1/8"1.68"3.32"Stainless Steel2.56"Jaw€284.78
RFQ
A68514470026SS1101-3/8"5/16" x 5/32"1.75"3.32"Stainless Steel2.63"Jaw€284.78
A68514470027SS1101-1/2"3/8" x 3/16"1.68"3.32"Stainless Steel2.56"Jaw€284.78
A68514470023SS1101"1/4" x 1/8"1.68"3.32"Stainless Steel2.56"Jaw€284.78
RFQ
StyleModelCoupling SizeBore SizeKeyway SizeLength through BoreOutside Dia.MaterialCoupling TypeMax. BorePrice
A68514476581SS09518 mm6 mm x 2.8 mm25.4 mm53.59 mmStainless SteelJaw28 mm€201.64
RFQ
A68514476599SS19035 mm10 mm x 3.3 mm49.28 mm114.3 mmStainless SteelJaw56.26 mm€1,288.80
LOVEJOY -

SS Type Hubs With Rough Stock Bore

Lovejoy SS type jaw coupling hubs are designed for power transmission and accommodating shaft misalignment for gearboxes, electric pumps, motors, blowers and compressors. They transfer shocks and misalignments to the central part of the coupling assembly for wear minimisation on the shaft assembly. These hubs have no metal to metal contact to eliminate the need for maintenance and provide resistance to dirt, sand, oil, moisture and grease. They are made of stainless steel for fail safe operation even upon elastomer failure. Variants are available in bore diameters of 1/4 & 5/8 inches on Raptor Supplies.

StyleModelCoupling SizeBore SizeLength through BoreMax. BoreHub LengthOutside Dia.MaterialCoupling TypePrice
A68514470001SS0751/4"0.82"0.875"1.32"1.36"Stainless SteelJaw€54.04
RFQ
A68514470004SS1105/8"1.68"1.625"2.56"3.32"Stainless SteelJaw€189.16
LOVEJOY -

SS Type Hubs Without Keyway, Inch Bores

Lovejoy SS style jaw coupling hubs are designed for power transmission and accommodating shaft misalignment in gearboxes, electric pumps, motors, blowers and compressors. They transfer misalignments and shocks to the central part of the coupling assembly for wear minimisation on the shaft assembly. These SS hubs feature finished bores to ensure rust protection and are capable of performing even in case of elastomer failure.

StyleModelCoupling SizeBore SizeKeyway SizeLength through BoreOutside Dia.MaterialCoupling TypeHub LengthPrice
A68514470006SS0751/4"No Keyway0.82"1.36"Stainless SteelJaw1.32"€103.94
RFQ
A68514476406SS0951/2"No Keyway1"2.11"Stainless SteelJaw1.52"€208.24
123

Jaw Coupling Hubs

Jaw couplings are a type of flexible couplings designed to link two rotating shafts that are not properly aligned for transferring the rotational power or torque from one shaft to another. The jaw couplings are suitable for diverse industrial applications due to their versatile & robust construction and good speed capability, chemical resistance & dampening capability. Jaw couplings are easy to install, as they consist of only two jaw coupling hubs and a spider. These jaw coupling hubs are attached to the shafts and the spider flexes between the hubs for accommodating the misalignment & shocks. Shaft misalignments are mostly radial, parallel or angular and cause complications to transferring rotational power from one shaft to the other in the form of loads, vibrations, stresses and other forces, which change as per the type of misalignment.
The jaw coupling hubs are popular due to their fail-safe design that ensures interlocking of the coupling & continued operation (up to a certain extent) even after the elastomeric spider fails, wears out or gets loosened. Unlike gear, grid or chain couplings, jaw coupling hubs are also maintenance-free as they do not require periodic application of grease or additional maintenance (provided that the spider remains intact). These jaw coupling hubs are made of cast iron, powder metal, sintered iron, sintered carbon steel, steel or zinc alloy to ensure high compression strength and durability. They are also offered in aluminium or stainless steel construction for lightweight and resistance to corrosion in food & pharmaceutical environments.
Lovejoy jaw coupling hubs are available in two broad types: straight jaw coupling hubs and curved jaw coupling hubs. Straight jaw hubs are made from a diverse range of materials and feature straight jaws for adjusting to various styles of spiders. They are used with open centre spiders, snap wrap spiders with retainer rings; closed centre spiders having Nitrile Butadiene (Buna N), urethane, Hytrel or bronze construction. Curved jaw coupling hubs (Lovejoy CJ Series) on the other hand, feature a curved jaw profile that concentrates the torque to the central region of the spider's limbs, thereby improving the efficiency of the elastomer material and reduces rotational backlash. They are mostly used with open centre elastomeric spiders to accommodate shafts having little separation.
Choose from a wide range of these jaw coupling hubs, available in both unbored and bored variants on Raptor Supplies. The bored variants are offered in bore sizes ranging from 1/8 to 4 inches.

Uses

Jaw coupling hubs are ideal for linking two shafts when used in conjunction with elastomeric inserts or spiders to form couplings. These jaw coupling hubs are used in a wide range of motion control (servo) applications, such as conveyors, escalators, motor vehicles, forestry, agricultural & mining equipment in robotics, automobile, aeronautics and space industries.

Features

  • Jaw coupling hubs in conjunction with spiders form jaw couplings and are used to transmit rotational power from one shaft to another.
  • They are equipped with an optional bore or a hole at the centre of the hub for ease of mounting on the shafts. Users can identify the bore size or bore diameter of a hub for selecting a correct sized jaw coupling hub for their use.
  • These hub bores may also have keyway slots to fit a key and prevent slipping of the hub on the rotating shaft. Keyway size indicates the height and width of the keyway slot to fit in the right sized key.
  • The jaw coupling hubs have an effective length through the bore to help them slide-fit on the shaft & the optional key.
  • These hubs handle the torque from the driving shaft and pass it onto a driven shaft while handling shocks, vibrations & angular misalignment. Torque refers to the applied force causing rotational motion. In imperial units, torque is expressed as inch-pounds (in.-lbs.) whereas, in metrics, it is expressed as Newton-meters (Nm).
  • They have diverse types of designs, constructions and bore tolerances for handling a wide range of rotational speeds (maximum speed).
  • These jaw coupling hubs feature fail-safe mechanism for continuing the operation up to a certain time, in case the shock-absorbing spider inserts wear down or fail to interlock.
  • They provide highly reliable service without any metal to metal contact to prevent regular wear & tear.
  • These jaw coupling hubs are resistant to oil, dirt, moisture & grease for ensuring long term operation.

Working Mechanism

A jaw coupling is made of three parts: two metallic hubs (jaw coupling hub) and an elastomer insert / element or spider. The spider has many lobes to fit the jaws of hubs alternatively for a tight press fit. Once the machinery starts running & the driving shaft starts rotating, the hub jaws attached to the driving shaft push towards the driven hub jaws and thereby towards the stationary shaft.
The jaws being locked together leads to torque transfer and rotation of the stationary shaft. The jaw coupling torque is then transmitted through the elastomer / spider lobes compressed between the hub jaws. These elastomeric spider legs act as coupling absorbers and help in cushioning the force between the driving & driven jaws. They absorb the vibration and shock from torque transfer and consequently protect the surrounding components from getting damaged.

Standards and Approvals

  • Lovejoy jaw coupling hubs meet the ANSI/AGMA 9002-B04 or 9112-A04 and ISO 9001:2008 industry standards for superior performance of the hubs.

Frequently Asked Questions

How to install a jaw coupling hub?

Users can install jaw coupling hubs by following these steps:
  • The customers should first buy a spider according to the selected hub (preferably from the same corresponding series) having the same specifications & parameters.
  • After purchase, they should ensure that each component is free from contaminants, defects or cracks and match the shaft diameter to the bore size of the hubs.
  • Before starting the coupling installation, users should ensure that the machinery is disconnected from all power sources. They should also not install it on unstable or moving equipment.
  • The hubs having key slots should be fitted with the keys and slid fit into shafts for preventing slipping during shaft rotation. The keyless hubs can be attached directly to shafts using set screws.
  • The users should insert a spider into a hub while ensuring that the spider opening is large enough to fit both the shaft & the optional key. Selected jaw coupling hubs can be overhung slightly or be moved back on the shafts for adjusting according to misalignments in shaft separation.
  • Then, the second hub is brought near the first hub while keeping the guidelines in mind, such as the gap between hub faces.
  • Users should check the set screw tightness & alignment before testing to prevent possible misalignment.
  • Now the coupling is ready for operation, users should remove any material or tool away from the shaft and coupler. The equipment is ready to start up and test.

What is the difference between rigid and flexible jaw coupling?

Rigid couplings offer a rigid connection between two shafts that are firmly connected. They transfer torque smoothly throughout the system. These rigid couplings can't handle misalignment and shocks. Flexible couplings like jaw coupling hubs provide flexible connections and hence, can withstand shocks & misalignment up to a certain extent. However, there is a chance of some losses during torque transfer while using flexible jaw coupling.

What are some common mistakes the users make while selecting a jaw coupling hub?

Some common mistakes users make while selecting jaw coupling hubs are:
  • Failing to check maximum bore capacity: Users should always check the shaft size of the driving equipment before purchasing a jaw coupling.
  • Using same size couplings everywhere: Using the one-size-fits-all approach may seem like a good idea to prevent downtime. But an oversized or undersized jaw coupling may cause malfunctioning in motors and failed couplings.
  • Ignoring heat and chemical compatibility: Since the jaw couplings require purchasing of both hubs and spiders, the customers should take note that both the coupling hub & spider materials are compatible with the required environments.
  • Overlooking space restrictions: Users should make sure that the selected couplings according to required torque applications can fit the provided space. High torque applications require either a large diameter coupling to handle high torque or coupling with different designs & high torque density.

How to choose the right jaw coupling hub?

Customers can choose the right jaw coupling hubs for their needs according to the following points:
  • Determining the usage.
  • Choosing the material considering the intended application environment.
  • Selecting the coupling on the basis of torque, speed, bore size and other factors.
Jaw coupling hub types are based on usage and their ability to handle the degree of movement or rotation. For example, curved jaw coupling hubs (Lovejoy CJ Series) transfer high torque and can handle some degree of rotation (backlash) due to their curved jaw design.

What is the difference between keyway and keyless jaw coupling hubs?

Selected models of jaw coupling hubs feature a cutout slot in the mating part (hub) of the couplings, known as keyways. These slots or keyways fit in the keys or a separate mechanical attachment on the shafts or other mated tools. The use of "Keys" leads to improved torque & prevents slipping. It also results in reduced losses due to vibrations & backlash (degree of free movement between two rotating, mating parts).
However, some applications do not require keys, as keyless jaw coupling hubs use only set screw holding power to transfer torque. Keyless hubs are ideal for applications that cause no damages or injuries even if the shafts slip. Keyed jaw coupling hubs concentrate the stresses around the key or key slot, causing maintenance issues and efficiency losses. Keyless hubs distribute the load & hence require less maintenance.