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.

Jaw Coupling Hubs

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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...Read more

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.

Style	Model	Max. Speed	Number Of Jaws	Overall Length	Length Through Bore	Nominal Torque	Max. Bore	Min. Bore	Dimension G	Price
A	68514418035	5000 RPM	4	4 1/2"	1 3/4"	1240 lbs.-in.	1 7/8"	5/8"	1"	€133.21
A	68514417977	5000 RPM	3	4 1/4"	1.69"	792 lbs.-in.	1 5/8"	5/8"	0.87"	€102.41
A	68514476261	7000 RPM	3	3 1/2"	1.37"	417 lbs.-in.	1 3/8"	1/2"	3/4"	€103.59
A	68514417914	7000 RPM	3	3 1/2"	1.37"	417 lbs.-in.	1 3/8"	1/2"	3/4"	€79.60
A	68514456473	7000 RPM	3	3 1/2"	1.37"	417 lbs.-in.	1 3/8"	1/2"	3/4"	€52.84
A	68514417880	7000 RPM	3	2.81"	1.03"	318 lbs.-in.	1.187"	1/2"	3/4"	€79.19
A	68514417847	9000 RPM	3	2 1/2"	1"	194 lbs.-in.	1 1/8"	1/2"	1/2"	€40.07
A	68514410794	9000 RPM	3	2.34"	0.91"	144 lbs.-in.	7/8"	1/4"	13/25"	€25.99
A	68514444004	9000 RPM	3	2.34"	0.91"	144 lbs.-in.	7/8"	1/4"	13/25"	€25.99
A	68514410792	9000 RPM	3	2.34"	0.91"	144 lbs.-in.	7/8"	1/4"	13/25"	€29.58
A	68514410793	9000 RPM	3	2.34"	0.91"	144 lbs.-in.	7/8"	1/4"	13/25"	€25.99
A	68514410795	9000 RPM	3	2.34"	0.91"	144 lbs.-in.	7/8"	1/4"	13/25"	€23.64
A	68514410791	9000 RPM	3	2.34"	0.91"	144 lbs.-in.	7/8"	1/4"	13/25"	€24.76
A	68514410797	9000 RPM	3	2.34"	0.91"	144 lbs.-in.	7/8"	1/4"	13/25"	€25.99
A	68514410637	11000 RPM	3	2 3/25"	0.81"	90 lbs.-in.	7/8"	1/4"	1/2"	€16.97
A	68514461817	11000 RPM	3	2 3/25"	0.81"	90 lbs.-in.	7/8"	1/4"	1/2"	€16.97
A	68514410631	11000 RPM	3	2 3/25"	0.81"	90 lbs.-in.	7/8"	1/4"	1/2"	€16.97
A	68514410633	11000 RPM	3	2 3/25"	0.81"	90 lbs.-in.	7/8"	1/4"	1/2"	€16.97
A	68514410632	11000 RPM	3	2 3/25"	0.81"	90 lbs.-in.	7/8"	1/4"	1/2"	€16.97
A	68514410634	11000 RPM	3	2 3/25"	0.81"	90 lbs.-in.	7/8"	1/4"	1/2"	€16.97
A	68514410630	11000 RPM	3	2 3/25"	0.81"	90 lbs.-in.	7/8"	1/4"	1/2"	€16.97
A	68514410471	14000 RPM	2	2"	3/4"	43.2 lbs.-in.	3/4"	1/4"	1/2"	€15.54
A	68514410466	14000 RPM	2	2"	3/4"	43.2 lbs.-in.	3/4"	1/4"	1/2"	€15.54
A	68514410469	14000 RPM	2	2"	3/4"	43.2 lbs.-in.	3/4"	1/4"	1/2"	€15.54
A	68514410480	14000 RPM	2	2"	3/4"	43.2 lbs.-in.	3/4"	1/4"	1/2"	€14.80

LOVEJOY -

CJ Series Hubs Steel, B & BX Style, Inch Bores

Style	Model	Coupling Size	Outside Dia.	Overall Coupling Length	Max. Speed	Length Through Bore	Nominal Torque	Max. Bore	Min. Bore	Price
A	68514476183	CJ28	2 14/25"	3.54"	8500 RPM	1.38"	840 lbs.-in.	1 1/2"	0.87"	€978.12
A	68514476182	CJ28	2 14/25"	3.54"	8500 RPM	1.38"	840 lbs.-in.	1 1/2"	0.87"	€978.12
A	68514476386	CJ55	4 18/25"	4 14/25"	4750 RPM	3.54"	3625 lbs.-in.	2 3/4"	0.47"	€2,090.88

RULAND MANUFACTURING -

MJCC Series Jaw Coupling With Keyways

Style	Model	Bore Dia.	Outside Dia.	Keyway Size	Overall Length	Keyway	Size	Hub Material	For Shaft Type	Price
A	MJCC25-8-A	8 mm	25.4 mm	-	11.9 mm	Yes	MJCC25	Aluminum	-	€61.82
A	MJCC33-8-A	8 mm	33.3 mm	-	15 mm	Yes	MJCC33	Aluminum	-	€85.33
B	MJCC25-10-A	10 mm	1"	3 mm x 1.4 mm	35.3 mm	No	MJCC25	Aluminum	-	€61.82
C	MJCC41-10-A	10 mm	1 5/8"	3 mm x 1.4 mm	53 mm	No	MJCC41	Aluminum	-	€106.78
A	MJCC33-10-A	10 mm	33.3 mm	3 mm x 1.4 mm	15 mm	Yes	MJCC33	Aluminum	-	€85.33
A	MJCC33-11-A	11 mm	33.3 mm	4 mm x 1.8 mm	15 mm	Yes	MJCC33	Aluminum	-	€85.33
D	MJCC41-11-A	11 mm	41.3 mm	4 mm x 1.8 mm	18 mm	Yes	MJCC41	Aluminum	-	€106.78
A	MJCC25-11-A	11 mm	25.4 mm	4 mm x 1.8 mm	11.9 mm	Yes	MJCC25	Aluminum	-	€61.82
D	MJCC51-12-A	12 mm	50.8 mm	4 mm x 1.8 mm	20.8 mm	Yes	MJCC51	Aluminum	-	€165.44
A	MJCC33-12-A	12 mm	33.3 mm	4 mm x 1.8 mm	15 mm	Yes	MJCC33	Aluminum	-	€85.33
B	MJCC25-12-A	12 mm	1"	4 mm x 1.8 mm	35.3 mm	No	MJCC25	Aluminum	-	€61.82
C	MJCC41-12-A	12 mm	1 5/8"	4 mm x 1.8 mm	53 mm	No	MJCC41	Aluminum	-	€106.78
D	MJCC57-14-A	14 mm	57.2 mm	5 mm x 2.3 mm	28.7 mm	Yes	MJCC57	Aluminum	-	€218.21
D	MJCC51-14-A	14 mm	50.8 mm	5 mm x 2.3 mm	20.8 mm	Yes	MJCC51	Aluminum	-	€165.44
C	MJCC41-14-A	14 mm	1 5/8"	5 mm x 2.3 mm	53 mm	No	MJCC41	Aluminum	-	€106.78
A	MJCC33-14-A	14 mm	33.3 mm	5 mm x 2.3 mm	15 mm	Yes	MJCC33	Aluminum	-	€85.33
D	MJCC41-15-A	15 mm	41.3 mm	5 mm x 2.3 mm	18 mm	Yes	MJCC41	Aluminum	-	€106.78
A	MJCC33-15-A	15 mm	33.3 mm	5 mm x 2.3 mm	15 mm	Yes	MJCC33	Aluminum	-	€85.33
D	MJCC57-15-A	15 mm	57.2 mm	5 mm x 2.3 mm	28.7 mm	Yes	MJCC57	Aluminum	-	€218.21
D	MJCC51-15-A	15 mm	50.8 mm	5 mm x 2.3 mm	20.8 mm	Yes	MJCC51	Aluminum	-	€165.44
D	MJCC51-16-A	16 mm	50.8 mm	5 mm x 2.3 mm	20.8 mm	Yes	MJCC51	Aluminum	-	€165.44
A	MJCC33-16-A	16 mm	33.3 mm	5 mm x 2.3 mm	15 mm	Yes	MJCC33	Aluminum	-	€85.33
C	MJCC57-16-A	16 mm	2 1/4"	5 mm x 2.3 mm	80 mm	No	MJCC57	Aluminum	-	€218.21
C	MJCC41-16-A	16 mm	1 5/8"	5 mm x 2.3 mm	53 mm	No	MJCC41	Aluminum	-	€109.99
D	MJCC41-17-A	17 mm	41.3 mm	5 mm x 2.3 mm	18 mm	Yes	MJCC41	Aluminum	-	€138.52

RULAND MANUFACTURING -

MJS Series Jaw Coupling Hubs, Set Screw

Style	Model	Bore Dia.	Outside Dia.	Overall Length	Size	Keyway Size	Hub Material	Keyway	Price
A	MJS15-3-A	3 mm	15 mm	7.6 mm	MJS15	None	Aluminum	No	€28.46
A	MJS19-4-A	4 mm	19.1 mm	9.8 mm	MJS19	None	Aluminum	No	€31.90
A	MJS15-4-A	4 mm	15 mm	7.6 mm	MJS15	None	Aluminum	No	€28.46
A	MJS19-5-A	5 mm	19.1 mm	9.8 mm	MJS19	None	Aluminum	No	€31.90
A	MJS15-5-A	5 mm	15 mm	7.6 mm	MJS15	None	Aluminum	No	€28.46
A	MJS15-6-A	6 mm	15 mm	7.6 mm	MJS15	None	Aluminum	No	€28.46
A	MJS19-6-A	6 mm	19.1 mm	9.8 mm	MJS19	None	Aluminum	No	€31.90
A	MJS25-6-A	6 mm	25.4 mm	11.9 mm	MJS25	None	Aluminum	No	€40.73
A	MJS19-8-A	8 mm	19.1 mm	9.8 mm	MJS19	None	Aluminum	No	€31.90
A	MJS33-8-A	8 mm	33.3 mm	15 mm	MJS33	None	Aluminum	No	€58.99
A	MJS25-8-A	8 mm	25.4 mm	11.9 mm	MJS25	None	Aluminum	No	€40.73
A	MJS25-10-A	10 mm	25.4 mm	11.9 mm	MJS25	None	Aluminum	No	€40.73
B	MJS41-10-A	10 mm	41.3 mm	18 mm	MJS41	None	Aluminum	No	€69.77
A	MJS33-10-A	10 mm	33.3 mm	15 mm	MJS33	None	Aluminum	No	€58.99
B	MJS41-12-A	12 mm	41.3 mm	18 mm	MJS41	None	Aluminum	No	€69.77
A	MJS33-12-A	12 mm	33.3 mm	15 mm	MJS33	None	Aluminum	No	€58.99
B	MJS51-12-A	12 mm	50.8 mm	20.8 mm	MJS51	None	Aluminum	No	€120.23
A	MJS25-12-A	12 mm	25.4 mm	11.9 mm	MJS25	None	Aluminum	No	€40.73
B	MJS51-14-A	14 mm	50.8 mm	20.8 mm	MJS51	None	Aluminum	No	€120.23
B	MJS57-14-A	14 mm	57.2 mm	28.7 mm	MJS57	None	Aluminum	No	€169.70
B	MJS41-14-A	14 mm	41.3 mm	18 mm	MJS41	None	Aluminum	No	€69.77
A	MJS33-14-A	14 mm	33.3 mm	15 mm	MJS33	None	Aluminum	No	€58.99
B	MJS41-15-A	15 mm	41.3 mm	18 mm	MJS41	None	Aluminum	No	€69.77
A	MJS33-15-A	15 mm	33.3 mm	15 mm	MJS33	None	Aluminum	No	€58.99
B	MJS51-16-A	16 mm	50.8 mm	20.8 mm	MJS51	None	Aluminum	No	€120.23

LOVEJOY -

RRS And RRSC Type Hubs With Keyway, Metric Bores

Style	Model	Coupling Size	Outside Dia.	Hub Material	Length Through Bore	Max. Bore	Min. Bore	Hub Length	Dimension Cd	Price
A	68514477511	RRS225	127 mm	Cast Iron	55.37 mm	67 mm	19 mm	77.72 mm	142.75 mm	€251.74
A	68514455677	RRSC150	95.25 mm	Sintered Iron	44.45 mm	48 mm	16 mm	66.8 mm	112.78 mm	-	RFQ
A	68514455676	RRSC150	95.25 mm	Sintered Iron	44.45 mm	48 mm	16 mm	66.8 mm	112.78 mm	-	RFQ
A	68514455678	RRSC150	95.25 mm	Sintered Iron	44.45 mm	48 mm	16 mm	66.8 mm	112.78 mm	-	RFQ
A	68514455680	RRSC190	114.3 mm	Cast Iron	49.28 mm	54 mm	19 mm	71.63 mm	127 mm	-	RFQ
A	68514455681	RRSC190	114.3 mm	Cast Iron	49.28 mm	54 mm	19 mm	71.63 mm	127 mm	-	RFQ
A	68514455682	RRSC190	114.3 mm	Cast Iron	49.28 mm	54 mm	19 mm	71.63 mm	127 mm	€241.36

LINN GEAR -

Type S Weld-In Hubs

Style	Model	MPN	Price
A	s16-4	s16-4	€65.14
A	s16-6	s16-6	€65.14
A	s20-6	s20-6	€71.38
A	s20-8	s20-8	€71.38
A	s25-6	s25-6	€131.67
A	s25-8	s25-8	€131.67
A	s25-10	s25-10	€131.67
A	s25-16	s25-16	€131.67
A	s30-10	s30-10	€180.18
A	s30-16	s30-16	€180.18
A	s35	s35	€408.87

TB WOODS -

Jaw Coupling Hubs

Style	Model	Coupling Size	Outside Dia.	Hub Material	Jaw Type	Center Hole	Set Screw Size	Price
A	53967	-	-	-	-	-	-	€164.67
A	L190214	-	-	-	Straight	-	-	€124.75
A	G348	-	-	-	-	-	-	€34.62
A	L09034B	-	-	-	-	-	-	€14.93
A	53974	-	-	-	-	-	-	€128.46
A	AL09524MM	-	-	-	-	-	-	€11.87	RFQ
A	AL07012MM	-	-	-	-	-	-	€4.59	RFQ
A	AL10020MM	-	-	-	-	-	-	€23.56	RFQ
A	AL07012	-	-	-	-	-	-	€4.59	RFQ
A	LC10034	-	-	-	-	-	-	€34.62
A	AL15034	-	-	-	-	-	-	€39.43	RFQ
B	L110178	-	-	-	-	-	-	€62.67
A	L0957814KS	-	-	-	-	-	-	€24.54
A	L05058B	-	-	-	-	-	-	€5.45
A	AL15058NK	-	-	-	-	-	-	€39.43	RFQ
A	LC190158	-	-	-	-	-	-	€34.62
A	53953	-	-	-	-	-	-	€6.24
A	AL09011/16	-	-	-	-	-	-	€7.70	RFQ
A	AL15078	-	-	-	-	-	-	€39.43	RFQ
A	AL07511/16	-	-	-	-	-	-	€5.03	RFQ
A	RRS07034	-	-	-	-	-	-	€4.18
A	L07517MMB	-	-	-	-	-	-	€10.39
A	53964	-	-	-	-	-	-	€148.51
A	L09058B	-	-	-	-	-	-	€14.93
A	G347	-	-	-	-	-	-	€34.62

LOVEJOY -

CJ Series Hubs Nodular Iron, B Style, Metric Bores

Style	Model	Coupling Size	Outside Dia.	Overall Coupling Length	Hub Material	Max. Speed	Length Through Bore	Nominal Torque	Max. Bore	Price
A	68514472347	CJ110	255.02 mm	294.89 mm	Nodular Iron	2240 RPM	119.89 mm	4799 N-m	125 mm	-	RFQ
A	68514476594	CJ110	255.02 mm	294.89 mm	Nodular Iron	2240 RPM	119.89 mm	4799 N-m	125 mm	€1,271.16

LOVEJOY -

CJ Series Hubs Spline Bore

Style	Model	Coupling Size	Outside Dia.	Overall Coupling Length	Hub Material	Max. Speed	Length Through Bore	Max. Bore	Color	Price
A	68514476505	42/55	3.74"	4 24/25"	Cast Iron	6000 RPM	1.97"	2.13"	Gray	€335.61
B	68514476266	CJ38/45	3.15"	4.49"	Powder Metal	7100 RPM	1.77"	1 3/4"	Metallic	€260.51

LOVEJOY -

GS Series Aluminum Hubs, Inch Bores

Style	Model	Outside Dia.	Overall Coupling Length	Max. Speed	Coupling Size	Length Through Bore	Max. Bore	Dimension G	Dimension Hd	Price
A	68514476514	1.57"	2 3/5"	9550 RPM	-	0.98"	0.938"	0.63"	1.57"	€299.83
B	68514476318	1.57"	2 3/5"	9550 RPM	GS19/24B	0.98"	0.938"	0.63"	1.57"	-	RFQ
B	68514476523	1.57"	2 3/5"	9550 RPM	GS19/24B	0.98"	0.938"	0.63"	1.57"	€299.83
B	68514476513	1.57"	2 3/5"	9550 RPM	GS19/24B	0.98"	0.938"	0.63"	1.57"	€299.83
B	68514476175	2 14/25"	3.54"	5850 RPM	GS28/38B	1.38"	1 1/2"	0.79"	2 14/25"	-	RFQ
B	68514476538	3.15"	4.49"	4750 RPM	GS38/45B	1.77"	1 3/4"	0.94"	3.15"	€466.43
B	68514476539	3.15"	4.49"	4750 RPM	GS38/45B	1.77"	1 3/4"	0.94"	3.15"	€466.43

LOVEJOY -

H Type Coupling Hubs, Rough Stock Bore

Style	Model	Coupling Size	Outside Dia.	Max. Speed	Length Through Bore	Nominal Torque	Max. Bore	Min. Bore	Hub Length	Price
A	68514448070	H3067	-	-	-	-	-	-	-	€2,963.83	RFQ
B	68514450883	H3567	110"	2100 RPM	5"	46632 lbs.-in.	5"	2 5/8"	7.38"	€4,437.11
B	68514447878	H3667	120"	1900 RPM	5.63"	64812 lbs.-in.	5 5/8"	30"	8 1/4"	-	RFQ
B	68514455473	H4067	13 1/4"	1800 RPM	6 1/4"	88224 lbs.-in.	6 1/4"	3 1/4"	9.13"	€6,466.79
B	68514455477	H4567	14 1/2"	1500 RPM	7"	119700 lbs.-in.	7"	3 1/2"	10 3/25"	€7,513.48

LOVEJOY -

RRS And RRSC Type Hubs Without Keyway, Metric Bores

Style	Model	Coupling Size	Outside Dia.	Length Through Bore	Max. Bore	Min. Bore	Hub Length	Dimension Cd	Volume	Price
A	68514455675	RRSC150	95.25 mm	44.45 mm	48 mm	16 mm	66.8 mm	112.78 mm	36.98438 cu. in.	-	RFQ
A	68514455679	RRSC190	114.3 mm	49.28 mm	54 mm	19 mm	71.63 mm	127 mm	57.105 cu. in.	€253.44
A	68514455683	RRSC225	127 mm	55.37 mm	67 mm	19 mm	77.72 mm	142.75 mm	76.5 cu. in.	-	RFQ

TB WOODS -

Rigid Hubs

Style	Model	MPN	Price
A	G1FREBRB	G1FREBRB	€209.99	RFQ
A	G1FRSBRB	G1FRSBRB	€209.99	RFQ
A	G2CRRB	G2CRRB	€118.69	RFQ
A	G2FREBRB	G2FREBRB	€359.13	RFQ
A	G2FRSBRB	G2FRSBRB	€359.13	RFQ
A	G3FREBRB	G3FREBRB	€566.07
A	G3FRSBRB	G3FRSBRB	€566.07
A	G4CRRB	G4CRRB	€556.93	RFQ
A	G4FREBRB	G4FREBRB	€1,110.85
A	G4FRSBRB	G4FRSBRB	€1,110.85
A	G5CRRB	G5CRRB	€896.23
A	G5FREBRB	G5FREBRB	€1,740.43
A	G5FRSBRB	G5FRSBRB	€1,740.43
A	G15CRRB	G15CRRB	€89.77	RFQ
A	G15FREBRB	G15FREBRB	€319.56	RFQ
A	G15FRSBRB	G15FRSBRB	€319.56	RFQ
A	G25CRRB	G25CRRB	€174.99	RFQ
A	G25FREBRB	G25FREBRB	€441.29
A	G25FRSBRB	G25FRSBRB	€441.29	RFQ
A	G35CRRB	G35CRRB	€421.50	RFQ
A	G35FREBRB	G35FREBRB	€882.59
A	G35FRSBRB	G35FRSBRB	€882.59
A	G45CRRB	G45CRRB	€680.61
A	G45FREBRB	G45FREBRB	€1,369.53
A	G45FRSBRB	G45FRSBRB	€1,369.53

LOVEJOY -

RRC Type Adapter Hubs, Rough Stock Bore

Style	Model	Coupling Size	Outside Dia.	Length Through Bore	Max. Bore	Min. Bore	Dimension Hd	Dimension Cd	Volume	Price
A	68514455770	RRC226	5 4/25"	2 21/25"	2 1/8"	7/8"	4 3/25"	5 1/2"	48.2073 cu. in.	-	RFQ
A	68514455771	RRC276	6.18"	2.47"	2 7/8"	7/8"	50"	6 1/2"	61.75 cu. in.	-	RFQ
A	68514452030	RRC280	7 1/2"	2.47"	3 3/8"	1 1/4"	5 1/2"	7.81"	74.7175 cu. in.	€932.92
A	68514455772	RRC285	8 1/2"	2.87"	4 1/8"	1 1/4"	6 1/2"	8 22/25"	121.2575 cu. in.	-	RFQ
A	68514455773	RRC295	9 3/25"	2 3/4"	4 1/8"	1 1/2"	6 1/2"	9 14/25"	116.1875 cu. in.	-	RFQ
A	68514455774	RRC2955	9 3/25"	2 3/4"	4 1/8"	1 3/4"	6 1/2"	9 14/25"	116.1875 cu. in.	€1,638.32

RULAND MANUFACTURING -

JS Series Set Screw Jaw Coupling Hubs, Set Screw Style

Style	Model	Bore Dia.	Outside Dia.	Overall Length	Size	Keyway Size	Hub Material	Keyway	Price
A	JS12-3-A	0.188"	3/4"	9.8 mm	JS12	None	Aluminum	No	€31.90
A	JS10-3-A	0.188"	0.594"	7.6 mm	JS10	None	Aluminum	No	€28.46
A	JS12-5-A	0.312"	3/4"	9.8 mm	JS12	None	Aluminum	No	€31.90
A	JS21-5-A	0.312"	0.312"	15 mm	JS21	None	Aluminum	No	€58.99
A	JS16-5-A	0.312"	1"	11.9 mm	JS16	None	Aluminum	No	€40.73
B	JS36-20-A	1 1/4"	2 1/4"	28.7 mm	JS36	None	Aluminum	No	€169.70
B	JS36-18-A	1 1/8"	2 1/4"	28.7 mm	JS36	None	Aluminum	No	€169.70
B	JS36-16-A	1"	2 1/4"	28.7 mm	JS36	None	Aluminum	No	€169.70
B	JS32-16-A	1"	2"	20.8 mm	JS32	None	Aluminum	No	€120.23
A	JS21-8-A	1/2"	0.312"	15 mm	JS21	None	Aluminum	No	€58.99
B	JS26-8-A	1/2"	1 5/8"	18 mm	JS26	None	Aluminum	No	€69.77
B	JS32-8-A	1/2"	2"	20.8 mm	JS32	None	Aluminum	No	€120.23
B	JS36-8-A	1/2"	2 1/4"	28.7 mm	JS36	None	Aluminum	No	€169.70
A	JS16-8-A	1/2"	1"	11.9 mm	JS16	None	Aluminum	No	€40.73
A	JS10-4-A	1/4"	0.594"	7.6 mm	JS10	None	Aluminum	No	€28.46
A	JS16-4-A	1/4"	1"	11.9 mm	JS16	None	Aluminum	No	€40.73
A	JS12-4-A	1/4"	3/4"	9.8 mm	JS12	None	Aluminum	No	€31.90
A	JS10-2-A	1/8"	0.594"	7.6 mm	JS10	None	Aluminum	No	€28.46
B	JS32-12-A	3/4"	2"	20.8 mm	JS32	None	Aluminum	No	€120.23
B	JS36-12-A	3/4"	2 1/4"	28.7 mm	JS36	None	Aluminum	No	€169.70
B	JS26-12-A	3/4"	1 5/8"	18 mm	JS26	None	Aluminum	No	€69.77
A	JS21-6-A	3/8"	0.312"	15 mm	JS21	None	Aluminum	No	€58.99
A	JS16-6-A	3/8"	1"	11.9 mm	JS16	None	Aluminum	No	€40.73
B	JS26-6-A	3/8"	1 5/8"	18 mm	JS26	None	Aluminum	No	€69.77
B	JS36-10-A	5/8"	2 1/4"	28.7 mm	JS36	None	Aluminum	No	€169.70

RULAND MANUFACTURING -

JSC Series Jaw Couplings With Keyways

Style	Model	Bore Dia.	Keyway Size	Outside Dia.	Overall Length	Size	Hub Material	Keyway	Price
A	JSC36-20-A	1 1/4"	1/4" x 1/8"	2 1/4"	28.7 mm	JSC36	Aluminum	Yes	€201.19
A	JSC36-18-A	1 1/8"	1/4" x 1/8"	2 1/4"	28.7 mm	JSC36	Aluminum	Yes	€201.19
A	JSC36-16-A	1"	1/4" x 1/8"	2 1/4"	28.7 mm	JSC36	Aluminum	Yes	€201.19
A	JSC32-16-A	1"	1/4" x 1/8"	2"	20.8 mm	JSC32	Aluminum	Yes	€146.44
B	JSC16-8-A	1/2"	1/8" x 1/16"	1"	11.9 mm	JSC16	Aluminum	Yes	€55.55
B	JSC21-8-A	1/2"	1/8" x 1/16"	0.312"	15 mm	JSC21	Aluminum	Yes	€76.26
A	JSC36-8-A	1/2"	1/8" x 1/16"	2 1/4"	28.7 mm	JSC36	Aluminum	Yes	€201.19
A	JSC32-8-A	1/2"	1/8" x 1/16"	2"	20.8 mm	JSC32	Aluminum	Yes	€146.44
A	JSC26-8-A	1/2"	1/8" x 1/16"	1 5/8"	18 mm	JSC26	Aluminum	Yes	€91.30
A	JSC26-12-A	3/4"	3/16" x 3/32"	1 5/8"	18 mm	JSC26	Aluminum	Yes	€91.30
A	JSC32-12-A	3/4"	3/16" x 3/32"	2"	20.8 mm	JSC32	Aluminum	Yes	€146.44
A	JSC36-12-A	3/4"	3/16" x 3/32"	2 1/4"	28.7 mm	JSC36	Aluminum	Yes	€201.19
A	JSC26-6-A	3/8"	3/32" x 3/64"	1 5/8"	18 mm	JSC26	Aluminum	Yes	€91.30
B	JSC21-6-A	3/8"	3/32" x 3/64"	0.312"	15 mm	JSC21	Aluminum	Yes	€76.26
B	JSC16-6-A	3/8"	3/32" x 3/64"	1"	11.9 mm	JSC16	Aluminum	Yes	€55.55
A	JSC32-10-A	5/8"	3/16" x 3/32"	2"	20.8 mm	JSC32	Aluminum	Yes	€146.44
B	JSC21-10-A	5/8"	3/16" x 3/32"	0.312"	15 mm	JSC21	Aluminum	Yes	€76.26
A	JSC26-10-A	5/8"	3/16" x 3/32"	1 5/8"	18 mm	JSC26	Aluminum	Yes	€91.30
A	JSC36-10-A	5/8"	3/16" x 3/32"	2 1/4"	28.7 mm	JSC36	Aluminum	Yes	€201.19
A	JSC36-14-A	7/8"	3/16" x 3/32"	2 1/4"	28.7 mm	JSC36	Aluminum	Yes	€201.19
A	JSC32-14-A	7/8"	3/16" x 3/32"	2"	20.8 mm	JSC32	Aluminum	Yes	€146.44

RULAND MANUFACTURING -

Jaw Couplings

Style	Model	Coupling Size	Bore Dia.	Outside Dia.	Overall Coupling Length	Keyway Size	Maximum Bore Dia.	Shaft Locking Type	Hub Material	Price
A	JC44-16-A	JC44	1"	2 3/4"	1.297"	-	1"	Clamp On	Aluminum	€209.80
A	JCC44-24-A	JC44	1 1/2"	2 3/4"	1.297"	0.375" x 0.188"	1 1/2"	Clamp On	Aluminum	€243.40
A	JCC44-16-A	JC44	1"	2 3/4"	1.297"	1/4" x 1/8"	1"	Clamp On	Aluminum	€243.40
A	JC44-22-A	JC44	1 3/8"	2 3/4"	1.297"	-	1 3/8"	Clamp On	Aluminum	€209.80
A	JC44-18-A	JC44	1 1/8"	2 3/4"	1.297"	-	1 1/8"	Clamp On	Aluminum	€209.80
A	JC44-24-A	JC44	1 1/2"	2 3/4"	1.297"	-	1 1/2"	Clamp On	Aluminum	€209.80
A	JCC44-18-A	JC44	1 1/8"	2 3/4"	1.297"	1/4" x 1/8"	1 1/8"	Clamp On	Aluminum	€243.40
A	JC44-20-A	JC44	1 1/4"	2 3/4"	1.297"	-	1 1/4"	Clamp On	Aluminum	€209.80
A	JCC44-22-A	JC44	1 3/8"	2 3/4"	1.297"	0.312" x 0.125"	1 3/8"	Clamp On	Aluminum	€243.40
A	JCC44-20-A	JC44	1 1/4"	2 3/4"	1.297"	1/4" x 1/8"	1 1/4"	Clamp On	Aluminum	€243.40
A	JC50-26-A	JC50	1 5/8"	3 1/8"	1.594"	-	1 5/8"	Clamp On	Aluminum	€241.31
A	JC50-16-A	JC50	1"	3 1/8"	1.594"	-	1"	Clamp On	Aluminum	€241.31
A	JC50-20-A	JC50	1 1/4"	3 1/8"	1.594"	-	1 1/4"	Clamp On	Aluminum	€241.31
A	JCC50-26-A	JC50	1 5/8"	3 1/8"	1.594"	0.375" x 0.188"	1 5/8"	Clamp On	Aluminum	€279.92
A	JC50-22-A	JC50	1 3/8"	3 1/8"	1.594"	-	1 3/8"	Clamp On	Aluminum	€241.31
A	JCC50-24-A	JC50	1 1/2"	3 1/8"	1.594"	0.375" x 0.188"	1 1/2"	Clamp On	Aluminum	€279.92
A	JCC50-28-A	JC50	1 3/4"	3 1/8"	1.594"	0.375" x 0.188"	1 3/4"	Clamp On	Aluminum	€279.92
A	JC50-18-A	JC50	1 1/8"	3 1/8"	1.594"	-	1 1/8"	Clamp On	Aluminum	€241.31
A	JCC50-20-A	JC50	1 1/4"	3 1/8"	1.594"	1/4" x 1/8"	1 1/4"	Clamp On	Aluminum	€279.92
A	JCC50-18-A	JC50	1 1/8"	3 1/8"	1.594"	1/4" x 1/8"	1 1/8"	Clamp On	Aluminum	€279.92
A	JCC50-16-A	JC50	1"	3 1/8"	1.594"	1/4" x 1/8"	1"	Clamp On	Aluminum	€279.92
A	JC50-24-A	JC50	1 1/2"	3 1/8"	1.594"	-	1 1/2"	Clamp On	Aluminum	€241.31
A	JC50-28-A	JC50	1 3/4"	3 1/8"	1.594"	-	1 3/4"	Clamp On	Aluminum	€241.31
A	JCC50-22-A	JC50	1 3/8"	3 1/8"	1.594"	0.312" x 0.125"	1 3/8"	Clamp On	Aluminum	€279.92
A	MJC70-25-A	MJC70	25 mm	69.9 mm	33 mm	-	25 mm	Clamp On	Aluminum	€209.80

SUNG IL MACHINERY -

SOH Series Oldham Clamp-Style Coupling Hubs

Style	Model	MPN	Price
A	SOH-16C-4	SOH-16C-4	€18.90
B	SOH-16C-4.76	SOH-16C-4.76	€18.90
C	SOH-16C-5	SOH-16C-5	€18.90
D	SOH-16C-6	SOH-16C-6	€18.90
E	SOH-20C-5	SOH-20C-5	€20.70
F	SOH-20C-6	SOH-20C-6	€20.70
G	SOH-20C-6.35	SOH-20C-6.35	€20.70
H	SOH-20C-7.93	SOH-20C-7.93	€20.70
I	SOH-20C-8	SOH-20C-8	€20.70
J	SOH-20C-9.525	SOH-20C-9.525	€20.70
K	SOH-20C-10	SOH-20C-10	€20.70
L	SOH-25C-6	SOH-25C-6	€22.50
M	SOH-25C-6.35	SOH-25C-6.35	€22.50
N	SOH-25C-8	SOH-25C-8	€22.50
O	SOH-25C-9.525	SOH-25C-9.525	€22.50
P	SOH-25C-10	SOH-25C-10	€22.50
Q	SOH-25C-12	SOH-25C-12	€22.50
R	SOH-32C-8	SOH-32C-8	€27.90
S	SOH-32C-9.525	SOH-32C-9.525	€27.90
T	SOH-32C-10	SOH-32C-10	€27.90
U	SOH-32C-12	SOH-32C-12	€27.90
V	SOH-32C-12.7	SOH-32C-12.7	€27.90
W	SOH-32C-14	SOH-32C-14	€27.90
X	SOH-43C-12	SOH-43C-12	€45.00
Y	SOH-43C-12.7	SOH-43C-12.7	€45.00

SUNG IL MACHINERY -

SHR Series High Gain Couplings

Style	Model	MPN	Price
A	SHR-18C-4-8	SHR-18C-4-8	€80.10
B	SHR-18C-5-8	SHR-18C-5-8	€80.10
C	SHR-18C-6-8	SHR-18C-6-8	€80.10
D	SHR-18C-6.35-8	SHR-18C-6.35-8	€80.10
E	SHR-18C-8-8	SHR-18C-8-8	€80.10
F	SHR-24C-8-8	SHR-24C-8-8	€84.60
G	SHR-24C-8-10	SHR-24C-8-10	€84.60
H	SHR-24C-8-12	SHR-24C-8-12	€84.60
I	SHR-29C-8-8	SHR-29C-8-8	€91.80
J	SHR-29C-8-10	SHR-29C-8-10	€91.80
K	SHR-29C-8-12	SHR-29C-8-12	€91.80
L	SHR-29C-8-14	SHR-29C-8-14	€91.80
M	SHR-29C-10-14	SHR-29C-10-14	€91.80
N	SHR-29C-12-14	SHR-29C-12-14	€91.80
O	SHR-29C-14-14	SHR-29C-14-14	€91.80
P	SHR-38C-14-14	SHR-38C-14-14	€108.00
Q	SHR-38C-14-16	SHR-38C-14-16	€108.00
R	SHR-38C-14-18	SHR-38C-14-18	€108.00
S	SHR-38C-14-19	SHR-38C-14-19	€108.00
T	SHR-38C-14-20	SHR-38C-14-20	€108.00
U	SHR-38C-19-19	SHR-38C-19-19	€108.00
V	SHR-38C-19-20	SHR-38C-19-20	€108.00
W	SHR-43C-14-14	SHR-43C-14-14	€122.40
X	SHR-43C-14-16	SHR-43C-14-16	€122.40
Y	SHR-43C-14-18	SHR-43C-14-18	€122.40

RULAND MANUFACTURING -

JCC Series Jaw Coupling With Keyways

Style	Model	Bore Dia.	Keyway Size	Outside Dia.	Overall Length	Keyway	Size	Hub Material	Price
A	JCC36-20-A	1 1/4"	1/4" x 1/8"	2 1/4"	28.7 mm	Yes	JCC36	Aluminum	€218.21
B	JCC36-18-A	1 1/8"	1/4" x 1/8"	2 1/4"	28.7 mm	No	JCC36	Aluminum	€218.21
A	JCC32-16-A	1"	1/4" x 1/8"	2"	20.8 mm	Yes	JCC32	Aluminum	€165.44
B	JCC36-16-A	1"	1/4" x 1/8"	2 1/4"	28.7 mm	No	JCC36	Aluminum	€218.21
B	JCC36-8-A	1/2"	1/8" x 1/16"	2 1/4"	28.7 mm	No	JCC36	Aluminum	€218.21
C	JCC16-8-A	1/2"	1/8" x 1/16"	1"	11.9 mm	No	JCC16	Aluminum	€61.82
B	JCC26-8-A	1/2"	1/8" x 1/16"	1 5/8"	18 mm	No	JCC26	Aluminum	€109.99
A	JCC32-8-A	1/2"	1/8" x 1/16"	2"	20.8 mm	Yes	JCC32	Aluminum	€165.44
D	JCC21-8-A	1/2"	1/8" x 1/16"	0.312"	15 mm	Yes	JCC21	Aluminum	€85.33
B	JCC26-12-A	3/4"	3/16" x 3/32"	1 5/8"	18 mm	No	JCC26	Aluminum	€109.99
A	JCC32-12-A	3/4"	3/16" x 3/32"	2"	20.8 mm	Yes	JCC32	Aluminum	€165.44
B	JCC36-12-A	3/4"	3/16" x 3/32"	2 1/4"	28.7 mm	No	JCC36	Aluminum	€218.21
E	JCC16-6-A	3/8"	3/32" x 3/64"	1"	11.9 mm	No	JCC16	Aluminum	€61.82
B	JCC26-6-A	3/8"	3/32" x 3/64"	1 5/8"	18 mm	No	JCC26	Aluminum	€106.78
D	JCC21-6-A	3/8"	3/32" x 3/64"	0.312"	15 mm	Yes	JCC21	Aluminum	€85.33
B	JCC26-10-A	5/8"	3/16" x 3/32"	1 5/8"	18 mm	No	JCC26	Aluminum	€109.99
B	JCC36-10-A	5/8"	3/16" x 3/32"	2 1/4"	28.7 mm	No	JCC36	Aluminum	€218.21
A	JCC32-10-A	5/8"	3/16" x 3/32"	2"	20.8 mm	Yes	JCC32	Aluminum	€165.44
D	JCC21-10-A	5/8"	3/16" x 3/32"	0.312"	15 mm	Yes	JCC21	Aluminum	€85.33
A	JCC32-14-A	7/8"	3/16" x 3/32"	2"	20.8 mm	Yes	JCC32	Aluminum	€165.44
B	JCC36-14-A	7/8"	3/16" x 3/32"	2 1/4"	28.7 mm	No	JCC36	Aluminum	€218.21

LOVEJOY -

CJ Series Hubs, Powder Metal, A And B Style Inch Bores

Style	Model	Coupling Size	Outside Dia.	Overall Coupling Length	Hub Material	Max. Speed	Keyway Size	Length Through Bore	Keyway	Price
A	68514462000	-	-	-	-	-	-	-	-	€33.62
B	68514461984	14	1.18"	1.38"	Powder Metal	1900 RPM	No Keyway	0.43"	Without Keyway	€25.18
B	68514461999	19	1.57"	2 3/5"	Powder Metal	14000 RPM	3/16" x 3/32"	0.98"	Keyway	€33.62
B	68514476356	19	1.57"	2 3/5"	Powder Metal	14000 RPM	No Keyway	0.98"	Without Keyway	€35.30
B	68514476359	19	1.57"	2 3/5"	Powder Metal	14000 RPM	3/16" x 3/32"	0.98"	Keyway	€35.30
B	68514476357	19	1.57"	2 3/5"	Powder Metal	14000 RPM	1/8" x 1/16"	0.98"	Keyway	€35.30
B	68514462009	24	2 1/5"	3.07"	Powder Metal	10600 RPM	1/4" x 1/8"	1.18"	Keyway	€50.45
B	68514462011	24	2 1/5"	3.07"	Powder Metal	10600 RPM	1/4" x 1/8"	1.18"	Keyway	€50.45
B	68514476365	24	2 1/5"	3.07"	Powder Metal	10600 RPM	3/16" x 3/32"	1.18"	Keyway	€52.98
B	68514476364	24	2 1/5"	3.07"	Powder Metal	10600 RPM	3/16" x 3/32"	1.18"	Keyway	€52.98
B	68514462010	24	2 1/5"	3.07"	Powder Metal	10600 RPM	1/4" x 1/8"	1.18"	Keyway	€50.45
B	68514476362	24	2 1/5"	3.07"	Powder Metal	10600 RPM	1/8" x 1/16"	1.18"	Keyway	€52.98
B	68514462013	28	2 14/25"	3.54"	Powder Metal	8500 RPM	3/16" x 3/32"	1.38"	Keyway	€67.29
B	68514462019	28	2 14/25"	3.54"	Powder Metal	8500 RPM	5/16" x 5/32"	1.38"	Keyway	€67.29
B	68514462017	28	2 14/25"	3.54"	Powder Metal	8500 RPM	1/4" x 1/8"	1.38"	Keyway	€67.29
B	68514462015	28	2 14/25"	3.54"	Powder Metal	8500 RPM	3/16" x 3/32"	1.38"	Keyway	€61.13
B	68514462012	28	2 14/25"	3.54"	Powder Metal	8500 RPM	No Keyway	1.38"	Without Keyway	€70.66
B	68514466873	28	2 14/25"	3.54"	Powder Metal	8500 RPM	3/8" x 3/16"	1.38"	Keyway	€59.87
B	68514462018	28	2 14/25"	3.54"	Powder Metal	8500 RPM	1/4" x 1/8"	1.38"	Keyway	€67.29
B	68514462016	28	2 14/25"	3.54"	Powder Metal	8500 RPM	1/4" x 1/8"	1.38"	Keyway	€67.29
B	68514462014	28	2 14/25"	3.54"	Powder Metal	8500 RPM	3/16" x 3/32"	1.38"	Keyway	€61.13
B	68514462025	38	3.15"	4.49"	Powder Metal	7100 RPM	1/4" x 1/8"	1.77"	Keyway	€92.72
B	68514462024	38	3.15"	4.49"	Powder Metal	7100 RPM	1/4" x 1/8"	1.77"	Keyway	€88.31
B	68514462030	38	3.15"	4.49"	Powder Metal	7100 RPM	3/8" x 3/16"	1.77"	Keyway	€88.31
B	68514462023	38	3.15"	4.49"	Powder Metal	7100 RPM	3/16" x 3/32"	1.77"	Keyway	€88.31

12...7 8

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.

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Jaw Coupling Hubs

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Jaw Coupling Hubs

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Jaw Coupling Hubs

Jaw Coupling Hubs

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Frequently Asked Questions

How to install a jaw coupling hub?

What is the difference between rigid and flexible jaw coupling?

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

How to choose the right jaw coupling hub?

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

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