What is overall length tolerance?

OAL (overall length tolerance) refers to the allowable deviation from the nominal or desired length of the coupling. It helps to position and align the coupling on the shafts it is connecting.

What is the purpose of keyways in Lovejoy couplings?

Keyways are grooves or slots that are machined into the bore of the coupling hub and include a matching key that is installed in the keyway to connect the hub to the shaft. These keyways help transmit torque, ease installation and provide accurate alignment between the shaft and the coupling.

How to maintain a spline coupling?

Regular visual inspections are needed to identify any signs of wear or damage of the spline coupling, such as cracks and corrosion.Ensure the coupling is properly aligned to maintain smooth operation and prevent premature wear.Regularly lubricate the coupling to prevent wear and reduce friction.Ensure that spline couplings are not subjected to overload conditions, as this can cause permanent deformation and reduce the strength of the spline teeth.

How do I select the right type of shaft coupling for my application?

The choice of coupling depends on shaft misalignment, torque requirements, speed and environmental conditions.

What is the difference between rigid couplings and flexible couplings?

Rigid couplings do not allow any angular or parallel misalignment between shafts. They provide a solid, backlash-free connection. In contrast, flexible couplings accommodate some degree of misalignment and are often used to dampen vibrations and shock loads in machinery.

How do I calculate the torque capacity of a spline shaft?

To calculate the torque capacity of a spline shaft, you can use the formula:Torque (T) = Shaft Diameter (D) x Material Strength (S) x Safety Factor (SF)

What is the difference between external spline and internal spline configurations?

External spline refers to the presence of the splines on the outside surface of a shaft, while internal spline refers to the splines inside a cylindrical bore.

How does rigid, flexible and fluid connection coupling differ from each other?

Rigid couplings provide a solid connection with no flexibility, flexible couplings offer misalignment compensation, and fluid couplings use hydraulic principles for torque transmission and speed control.

Spline Shafts And Couplings

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Spline shafts and couplings are used in power transmission systems to transfer torque and rotation from one component to another. Spline shafts have a long, cylindrical rod-type design with...Read more

LOVEJOY -

Saga Complete Couplings, Rough Stock Bore

Style	Model	Rough Stock Bore	Max. Bore	Length through Bore	Outside Dia.	Overall Length	Rated Torque	Max. Shock Load	Price (inc. VAT)
A	68514426081	1"	2.225"	2.5"	6.28"	7.44"	2000 In.Lbs.	6000 In.Lbs.	£1,091.91	RFQ
A	68514426085	2-1/8"	4"	4.34"	11.09"	12.66"	12000 In.Lbs.	36000 In.Lbs.	£4,768.72	RFQ

TB WOODS -

AA Form Flex Couplings
TB Wood's Form-Flex couplings connect two shafts and transmit torque / power effectively from one shaft to the other. They compensate for angular, parallel and axial misalignment between two connected shafts at a closer distance. These AA couplings feature a flexible disc to minimise misalignment forces and allow easy interchangeability, thereby reducing downtime & maintenance time. Choose from a wide range of these Form-Flex couplings, available in torque ratings ranging from 2363 to 17010 lb-inch on Raptor Supplies.

Style	Model	Free End Float +/-	Coupling Size	Dimension A	Inertia	Max. Bore	Max. RPM	Peak O/L Torque	Weight
A	AA5	0.03"	5	2.65"	1.4 lbs.-sq. ft.	0.88" , 1.19"	3600 rpm	450 lbs.-in.	1.76 Lbs.	RFQ
A	AA10	0.04"	10	3.19"	3.35 lbs.-sq. ft.	1 1/4" , 1.63"	3500 RPM	1200 lbs.-in.	2.77 Lbs.	RFQ
A	AA15	0.042"	15	3.65"	6.66 lbs.-sq. ft.	1 3/4" , 1.38"	3450 RPM	2363 lbs.-in.	4.24 lbs.	RFQ
A	AA20	0.055"	20	4.08"	10.2 lbs.-sq. ft.	1.69" , 2.13"	3350 RPM	3300 lbs.-in.	5.48 lbs.	RFQ
A	AA25	0.06"	25	4.95"	29.4 lbs.-sq. ft.	2" , 2.56"	3200 RPM	5700 lbs.-in.	9.81 Lbs.	RFQ
A	AA30	0.065"	30	5.63"	59 lbs.-sq. ft.	2.38" , 2.88"	3000 RPM	10395 lbs.-in.	15 Lbs.	RFQ
A	AA35	0.085"	35	6.63"	121 lbs.-sq. ft.	2.94" , 3 3/4"	2800 rpm	17010 lbs.-in.	22.4 lbs.	RFQ

LOVEJOY -

Uniflex Couplings UF Type, RRU Drop Out

Style	Model	Length	Coupling Size	Dimension BC	Max. Bore	Max. Speed	Max. Torque	Min. Bore	Pin Location (Dimension SL)	Price (inc. VAT)
A	68514413923	1.56"	UF50	1.5"	1"	30000 RPM	82 In.Lbs.	0.375"	0.5"	£344.36	RFQ
A	68514413952	3.44"	UF150	4.38"	2.125"	3000 rpm	1890 In.Lbs.	0.75"	0.82"	£1,323.25	RFQ

Stafford Mfg -

Solution Series, UPS Parallel Clamps

Style	Model	Bore Size	Bore Size A	Bore Size B	Outside Dia.	Total Length
A	UPS-A100008P	-	1"	0.500"	2"	3"	RFQ
A	UPS-A100012P	-	1"	0.750"	2"	3"	RFQ
A	UPS-A012008P	-	0.750"	0.500"	1.750"	2.500"	RFQ
A	UPS-A008008P	0.500"	-	-	1.375"	2"	RFQ
A	UPS-A012012P	0.750"	-	-	1.750"	2.500"	RFQ
A	UPS-A100100P	1"	-	-	2"	3"	RFQ

HUB CITY -

Involute Splined Couplings

Style	Model	Price (inc. VAT)
A	0332-00043	£89.77	RFQ
B	0332-00030	£194.87	RFQ
C	0332-00350	£93.05	RFQ
D	0332-00028	£87.57	RFQ
E	0332-00027	£83.19	RFQ

LOVEJOY -

U Type with Keyway, Regular Version, Inch Bores

Style	Model	Max. Bore	Axial Misalignment (Δ Ka)	Bore Size	Max. Parallel Misalignment (In.)	Max. Speed	Max. Torque	Min. Bore	Overall Length	Price (inc. VAT)
A	68514444108	0.75"	0.04"	5/8 x 3/4"	0.028"	20000 RPM	175 In.Lbs.	0.375"	3.31"	£490.83	RFQ
A	68514426099	0.75"	0.04"	5/8 x 5/8"	0.028"	20000 RPM	175 In.Lbs.	0.375"	3.31"	£490.83	RFQ
A	68514413351	0.75"	0.04"	3/4 x 3/4"	0.028"	20000 RPM	175 In.Lbs.	0.375"	3.31"	£490.83	RFQ
A	68514444307	0.625"	0.035"	1/2 x 5/8"	0.019"	20000 RPM	126 In.Lbs.	0.313"	2.72"	£463.68	RFQ
A	68514413255	0.625"	0.035"	5/8 x 5/8"	0.019"	20000 RPM	126 In.Lbs.	0.313"	2.72"	£463.68	RFQ
A	68514413409	0.875"	0.04"	7/8 x 7/8"	0.035"	10000 rpm	346 In.Lbs.	0.438"	3.5"	£534.12	RFQ
A	68514426105	1"	0.04"	3/4 x 3/4"	0.03"	6000 rpm	565 In.Lbs.	0.438"	4.12"	£766.26	RFQ
A	68514413461	1"	0.04"	1 x 1"	0.03"	6000 rpm	565 In.Lbs.	0.438"	4.12"	£766.26	RFQ
A	68514444219	1.5"	0.04"	1 3/8 x 1 7/16"	0.041"	3000 rpm	1890 In.Lbs.	0.75"	6.28"	£1,474.08	RFQ
A	68514413541	1.25"	0.04"	1 1/4 x 1 1/4"	0.044"	6000 rpm	755 In.Lbs.	0.625"	4.88"	£859.22	RFQ
A	68514448325	1.25"	0.04"	3/4 x 3/4"	0.044"	6000 rpm	755 In.Lbs.	0.625"	4.88"	£859.22	RFQ

LOVEJOY -

RRU Type Hubs without Keyway, Inch Bores

Style	Model	Dimension HL	Bore Size	Coupling Size	Dimension S	Max. Bore	Max. Speed	Max. Torque	Overall Length	Price (inc. VAT)
A	68514413695	1"	7/16"	RRU50	1.56"	1"	30000 RPM	82 In.Lbs.	3.52"	£174.63	RFQ
A	68514413740	1.25"	3/8"	RRU75	1.81"	1.25"	20000 RPM	175 In.Lbs.	4.27"	£221.26	RFQ

TB WOODS -

GR Form Flex Couplings

Style	Model	Hub Size	Angular Misalignment	Coupling Size	Inertia	Max. Angular Misalignment	Max. Bore	Max. Bore O/S	Max. RPM
A	GR332	-	0.5°	332	143 lbs.-sq. ft.	-	3.188" , 87" , 95"	3.438"	6600 RPM	RFQ
A	GR444	-	0.33°	444	8422 lbs.-sq. ft.	-	200" , 7"	-	3800 RPM	RFQ
A	GR511	-	0.33°	511	37076 lbs.-sq. ft.	-	10" , 280"	-	3100 RPM	RFQ
A	GR530	-	0.33°	530	148626 lbs.-sq. ft.	-	11.5" , 338"	-	2500 RPM	RFQ
A	GR412	-	0.33°	412	935 lbs.-sq. ft.	-	120" , 135" , 4 1/2"	4 3/4"	5200 RPM	RFQ
A	GR311	-	0.5°	311	41.5 lbs.-sq. ft.	-	2.813" , 78" , 86"	3 1/8"	8000 RPM	RFQ
A	GR346	-	0.5°	346	271 lbs.-sq. ft.	-	107" , 117" , 3 3/4"	4 1/4"	6100 RPM	RFQ
A	GR419	-	0.33°	419	2092 lbs.-sq. ft.	-	130" , 150" , 4 1/2"	5 1/2"	4600 RPM	RFQ
A	GR456	-	0.33°	456	13226 lbs.-sq. ft.	-	220" , 8"	-	3600 rpm	RFQ
A	GR520	-	0.33°	520	71849 lbs.-sq. ft.	-	10.375" , 297"	-	2800 rpm	RFQ
A	GR540	-	0.33°	540	346946 lbs.-sq. ft.	-	15.75" , 448"	-	2300 RPM	RFQ
A	GR321	4.57"	0.5°	321	77.6 lbs.-sq. ft.	0.5° /disc pack	3" , 83" , 90"	3 1/4"	7400 RPM	RFQ
A	GR380	6.3"	0.5°	380	469 lbs.-sq. ft.	0.5° /disc pack	105" , 118" , 3 3/4"	4 1/4"	5500 RPM	RFQ
A	GR424	9.57"	0.33°	424	4936 lbs.-sq. ft.	0.33° /disc pack	190" , 6.625"	-	4200 RPM	RFQ
A	GR483	12.56"	0.33°	483	20843 lbs.-sq. ft.	0.33° /disc pack	234" , 8.25"	-	3300 RPM	RFQ
A	GR525	17.35"	0.33°	525	113939 lbs.-sq. ft.	0.33° /disc pack	11" , 322"	-	2700 RPM	RFQ

Stafford Mfg -

Signature Series, Two Piece Split Precision Sleeve Couplings

Style	Model	Total Length	Bore Size	Grade	Type	Keyway Size	Material	Outside Dia.	Screw Material	Price (inc. VAT)
A	13L004004PSC	1.250"	1/4"	1215	Precision Sleeve	-	Steel	0.813"	Alloy Steel	£110.70	RFQ
B	13C005005	1.250"	5/16"	-	High Strength	-	316 Stainless Steel	0.813"	-	-	RFQ
C	13S005005PSC	1.250"	5/16"	303	Precision Sleeve	-	Stainless Steel	0.813"	18-8 Stainless Steel	£119.72	RFQ
A	13L005005PSC	1.250"	5/16"	1215	Precision Sleeve	-	Steel	0.813"	Alloy Steel	-	RFQ
D	13A005005PSC	1.250"	5/16"	2024	Precision Sleeve	-	Aluminum	0.813"	Alloy Steel	£108.27	RFQ
C	13S004004PSC	1.250"	1/4"	303	Precision Sleeve	-	Stainless Steel	0.813"	18-8 Stainless Steel	-	RFQ
B	13C004004	1.250"	1/4"	-	High Strength	-	316 Stainless Steel	0.813"	-	-	RFQ
D	13A004004PSC	1.250"	1/4"	2024	Precision Sleeve	-	Aluminum	0.813"	Alloy Steel	£108.27	RFQ
C	13S006006PSC	1.625"	3/8"	303	Precision Sleeve	-	Stainless Steel	1.063"	18-8 Stainless Steel	-	RFQ
E	15S004004PSC	1.625"	1/4"	303	Precision Sleeve	-	Stainless Steel	1.063"	18-8 Stainless Steel	-	RFQ
D	13A006006PSC	1.625"	3/8"	2024	Precision Sleeve	-	Aluminum	1.063"	Alloy Steel	£113.74	RFQ
F	15A005005PSC	1.625"	5/16"	2024	Precision Sleeve	-	Aluminum	1.063"	Alloy Steel	-	RFQ
B	13C006006	1.625"	3/8"	-	High Strength	-	316 Stainless Steel	1.063"	-	-	RFQ
E	15S005005PSC	1.625"	5/16"	303	Precision Sleeve	-	Stainless Steel	1.063"	18-8 Stainless Steel	-	RFQ
G	15L005005PSC	1.625"	5/16"	1215	Precision Sleeve	-	Steel	1.063"	Alloy Steel	£75.15	RFQ
F	15A004004PSC	1.625"	1/4"	2024	Precision Sleeve	-	Aluminum	1.063"	Alloy Steel	-	RFQ
H	15C005005	1.625"	5/16"	-	High Strength	-	316 Stainless Steel	1.063"	-	-	RFQ
A	13L006006PSC	1.625"	3/8"	1215	Precision Sleeve	-	Steel	1.063"	Alloy Steel	£90.60	RFQ
H	15C004004	1.625"	1/4"	-	High Strength	-	316 Stainless Steel	1.063"	-	-	RFQ
G	15L004004PSC	1.625"	1/4"	1215	Precision Sleeve	-	Steel	1.063"	Alloy Steel	£63.64	RFQ
D	13A008008PSC	1.875"	1/2"	2024	Precision Sleeve	-	Aluminum	1.250"	Alloy Steel	-	RFQ
A	13L007007PSC	1.875"	7/16"	1215	Precision Sleeve	-	Steel	1.250"	Alloy Steel	£69.54	RFQ
B	13C007007	1.875"	7/16"	-	High Strength	-	316 Stainless Steel	1.250"	-	-	RFQ
C	13S007007PSC	1.875"	7/16"	303	Precision Sleeve	-	Stainless Steel	1.250"	18-8 Stainless Steel	£138.48	RFQ
D	13A007007PSC	1.875"	7/16"	2024	Precision Sleeve	-	Aluminum	1.250"	Alloy Steel	£127.61	RFQ

BALDOR / DODGE -

Coupling And Drive Shafts

Style	Model	Price (inc. VAT)
A	352091	£344.78
A	243563	£529.41
A	352090	£344.78

LOVEJOY -

U Type without Keyway, Short Version, Inch Bores

Style	Model	Max. Parallel Misalignment (In.)	Axial Misalignment (Δ Ka)	Bore Dia.	Max. Speed	Max. Torque	Min. Bore	Overall Length	Pin Location (Dimension SL)	Price (inc. VAT)
A	68514444809	0.009"	0.015"	0.375"	30000 RPM	39 In.Lbs.	0.25"	1.65"	0.25"	£398.60	RFQ
A	68514413103	0.009"	0.015"	0.375"	30000 RPM	39 In.Lbs.	0.25"	1.65"	0.25"	£398.60	RFQ
A	68514441950	0.014"	0.01"	0.5"	30000 RPM	82 In.Lbs.	0.313"	1.82"	0.31"	£423.01	RFQ
A	68514413359	0.019"	0.02"	0.75"	20000 RPM	175 In.Lbs.	0.375"	2.72"	0.41"	£490.83	RFQ
A	68514450849	0.019"	0.02"	0.625"	20000 RPM	126 In.Lbs.	0.313"	2.28"	0.38"	£463.68	RFQ

TB WOODS -

TFI Form Flex Couplings

Style	Model	Max. Bore O/S	Angular Misalignment	Coupling Size	Max. RPM	Dimension B	Dimension C	Dimension H	Max. Angular Misalignment
A	TFI1310	-	0.5°	1310	6500 RPM	19.29"	5.71"	7.76"	-	RFQ
A	TFI8500	-	0.33°	8500	3600 rpm	33.07"	10.24"	14.37"	0.33° /disc pack	RFQ
A	TFI0260	-	0.5°	260	10000 RPM	11.42"	3.35"	4.662"	0.5° /disc pack	RFQ
A	TFI0750	-	0.5°	750	7500 RPM	16.14"	4.72"	6.46"	-	RFQ
A	TFI1900	-	0.33°	1900	5600 RPM	19.69"	5.91"	9.17"	-	RFQ
A	TFI3300	-	0.33°	3300	4900 RPM	23.78"	7.17"	10.63"	-	RFQ
A	TFI6000	-	0.33°	6000	4000 RPM	28.35"	9.06"	12.68"	-	RFQ
A	TFI0140	-	0.5°	140	12000 RPM	9.84"	2.95"	3.757"	-	RFQ
A	TFI0400	-	0.5°	400	8500 RPM	13.78"	4.13"	5.568"	-	RFQ
A	TFI12000	-	0.33°	12000	3000 RPM	36.38"	11.5"	16.02"	0.33° /disc pack	RFQ
A	TFI2500	-	0.33°	2500	5200 RPM	21.57"	6.46"	9.45"	0.33° /disc pack	RFQ
A	TFI0027	2 1/4"	0.5°	27	20000 RPM	5.91"	1.57"	2.143"	0.5° /disc pack	RFQ
A	TFI0038	3"	0.5°	38	16500 RPM	6.3"	1.77"	2.891"	-	RFQ

TB WOODS -

AP Series Spacer Couplings

Style	Model	Inertia at D Min.	Coupling Size	Dimension A	Max. Bore	Max. RPM	Peak O/L Torque	Dimension F	Dimension G	Price (inc. VAT)
A	AP30	77.7 lbs.-sq. ft.	30	5.63"	2.38" , 2.88"	5000 RPM	13860 lbs.-in.	1.88"	0.47"	£9.96	RFQ
A	AP35	156 lbs.-sq. ft.	35	6.63"	2.94" , 3 3/4"	4400 RPM	22680 lbs.-in.	2 1/4"	0.55"	£10.89

HUB CITY -

Involute Splined Shafts

Style	Model	Price (inc. VAT)
A	0332-00025	£179.53	RFQ
B	0332-00395	£221.13	RFQ

HUB CITY -

Splined Shafts

Style	Model	Price (inc. VAT)
A	0332-00391	£160.10	RFQ
A	0332-00397	£339.48	RFQ
A	0332-00038	£471.89	RFQ
A	0332-00390	£112.75	RFQ
A	0332-00039	£480.60	RFQ
A	0332-00026	£237.57	RFQ
A	0332-00023	£142.04	RFQ
B	0332-00394	£87.57	RFQ
A	0332-00393	£155.30	RFQ
A	0332-00399	£349.09	RFQ
A	0332-00398	£221.13	RFQ

LOVEJOY -

UFH Type with Keyway, Short Version, Inch Bores

Style	Model	Bore Size	Item	Price (inc. VAT)
A	68514413872	3/4"	Flange To Shaft Coupling	£490.83	RFQ
A	68514413870	5/8"	Shaft and Coupling	£490.83	RFQ

TB WOODS -

AY Form Flex Couplings
TB Wood's close couple Form-Flex couplings are ideal for transferring torque and power while accommodating angular, axial and parallel misalignment between two shafts. These AY Series couplings feature 300 stainless steel constructed flex discs for providing high torsional value with a maximum torque rating of 7600 lb-inch. They do not require additional lubrication for running smoothly. Choose from a wide range of Form-Flex couplings, available in a maximum bore size of 2.56 inches on Raptor Supplies.

Style	Model	Inertia	Coupling Size	Dimension A	Max. Bore	Max. RPM	Peak O/L Torque	Weight	Dimension B
A	AY5	1.24 lbs.-sq. ft.	5	2.65"	0.88" , 1.19"	8500 RPM	600 lbs.-in.	1.64 lbs.	2.85"	RFQ
A	AY10	3.08 lbs.-sq. ft.	10	3.19"	1 1/4" , 1.63"	7500 RPM	1600 lbs.-in.	2.68 lbs.	2.91"	RFQ
A	AY15	6.41 lbs.-sq. ft.	15	3.65"	1 3/4" , 1.38"	6700 RPM	3150 lbs.-in.	4.23 lbs.	3.33"	RFQ
A	AY20	9.92 lbs.-sq. ft.	20	4.08"	1.69" , 2.13"	6200 RPM	4400 lbs.-in.	5.49 Lbs.	3.76"	RFQ
A	AY25	27.6 lbs.-sq. ft.	25	4.95"	2" , 2.56"	5500 RPM	7600 lbs.-in.	9.78 lbs.	4.77"	RFQ

TB WOODS -

AR Form Flex Couplings

Style	Model	Free End Float +/-	Coupling Size	Dimension A	Inertia	Max. Bore	Max. RPM	Peak O/L Torque	Weight
A	AR5	0.015"	5	2.65"	0.96 lbs.-sq. ft.	0.88" , 1.19"	8500 RPM	600 lbs.-in.	1.24 lbs.	RFQ
A	AR10	0.02"	10	3.19"	2.35 lbs.-sq. ft.	1 1/4" , 1.63"	7500 RPM	1600 lbs.-in.	1.96 lbs.	RFQ
A	AR15	0.021"	15	3.65"	4.62 lbs.-sq. ft.	1 3/4" , 1.38"	6700 RPM	3150 lbs.-in.	2.98 Lbs.	RFQ
A	AR20	0.027"	20	4.08"	7.48 lbs.-sq. ft.	1.69" , 2.13"	6200 RPM	4400 lbs.-in.	4.07 lbs.	RFQ
A	AR25	0.03"	25	4.95"	20.4 lbs.-sq. ft.	2" , 2.56"	5500 RPM	7600 lbs.-in.	7.01 lbs.	RFQ
A	AR30	0.032"	30	5.63"	41.5 lbs.-sq. ft.	2.38" , 2.88"	5000 RPM	13860 lbs.-in.	10.8 Lbs.	RFQ
A	AR35	0.042"	35	6.63"	88.3 lbs.-sq. ft.	2.94" , 3 3/4"	4400 RPM	22680 lbs.-in.	17.2 Lbs.	RFQ

TB WOODS -

AX Series Closed Coupled Couplings

Style	Model	Inertia	Coupling Size	Dimension A	Max. Bore	Max. RPM	Peak O/L Torque	Dimension B	Dimension F	Price (inc. VAT)
A	AX30	51.7 lbs.-sq. ft.	30	5.63"	2.38" , 2.88"	5000 RPM	10395 lbs.-in.	6.3"	1.88"	£13.15
A	AX35	108 lbs.-sq. ft.	35	6.63"	2.94" , 3 3/4"	4400 RPM	17010 lbs.-in.	7.17"	2 1/4"	£14.61

TB WOODS -

HSH Form Flex Couplings
TB Wood's HSH Form-Flex couplings are designed to transmit torque while compensating for angular, parallel and axial misalignment between two connected shafts. They minimise misalignment forces on the connected equipment and are widely used in cooling fan drive applications. These couplings are available with steel and composite spacer tubing that reduces total cost by eliminating the need for bearings and support structures. The brand's HSH Series Form-Flex couplings range from 1000 rpm to 3800 rpm. A wide range of these couplings (with bore length up to 11 inches) is available on Raptor Supplies.

Style	Model	Free End Float +/-	Coupling Size	Dimension A	Inertia	Max. Bore	Max. RPM	Peak O/L Torque	Size
A	HSH22	0.036"	22	5.88"	75.6 lbs.-sq. ft.	2 3/4"	3800 RPM	14250 lbs.-in.	22mm	RFQ
A	HSH26	0.044"	26	6.88"	152 lbs.-sq. ft.	3 1/4"	3300 RPM	24000 lbs.-in.	26mm	RFQ
A	HSH31	0.052"	31	8.12"	390 lbs.-sq. ft.	3.12" , 4.13"	2800 rpm	36000 lbs.-in.	31	RFQ
A	HSH35	0.056"	35	9.12"	738 lbs.-sq. ft.	3.62" , 4 1/2"	2600 RPM	66000 lbs.-in.	35mm	RFQ
A	HSH37	0.062"	37	10.06"	1090 lbs.-sq. ft.	3 3/4" , 4.63"	2500 RPM	90000 lbs.-in.	37	RFQ
A	HSH42	0.067"	42	11"	1710 lbs.-sq. ft.	4 1/4" , 5"	2400 rpm	109500 lbs.-in.	42mm	RFQ
A	HSH45	0.072"	45	11.87"	2510 lbs.-sq. ft.	4 1/2" , 5 1/2"	2250 RPM	148500 lbs.-in.	45	RFQ
A	HSH50	0.082"	50	12.9"	4570 lbs.-sq. ft.	6.13"	2000 RPM	192000 lbs.-in.	50mm	RFQ
A	HSH55	0.092"	55	15"	7400 lbs.-sq. ft.	6.88"	1800 RPM	283500 lbs.-in.	55	RFQ
A	HSH85	0.14"	85	23.75"	79000 lbs.-sq. ft.	10.38"	1100 RPM	1243500 lbs.-in.	85	RFQ
A	HSH60	0.102"	60	16"	13100 lbs.-sq. ft.	7 1/2"	1600 RPM	391500 lbs.-in.	60	RFQ
A	HSH70	0.115"	70	18.5"	25800 lbs.-sq. ft.	8 1/2"	1400 RPM	622500 lbs.-in.	70	RFQ
A	HSH80	0.136"	80	22"	58700 lbs.-sq. ft.	9.12"	1200 RPM	1027500 lbs.-in.	80	RFQ
A	HSH92	0.156"	92	25.75"	129000 lbs.-sq. ft.	11"	1000 RPM	1560000 lbs.-in.	92	RFQ
A	HSH92HT	0.156"	92HT	25.75"	137000 lbs.-sq. ft.	10.5"	1000 RPM	2100000 lbs.-in.	92HT	RFQ
A	HSH75	1/8"	75	20"	37900 lbs.-sq. ft.	9"	1300 RPM	799500 lbs.-in.	75	RFQ

TB WOODS -

GCH Form Flex Couplings
TB Wood's GCH Form-Flex couplings are designed to connect two shafts for efficient power transmission applications in screw compressors, cooling towers or printing presses. These couplings come in a robust disc pack design for greater torque loads and lower weight per HP for a better inherent balance, as compared to rigid couplings. The high torsional stiffness feature of these couplings maintains the structural integrity of the system while counterbalancing angular or axial misalignments. They are integrated with a fail-safe mechanism that gets activated, when the element is damaged, by simply transmitting rotary motion via washers.

Style	Model	Inertia	Coupling Size	Dimension A	Max. Bore	Max. RPM	Peak O/L Torque	Spacer Size	Weight
A	GCH340-31	344 lbs.-sq. ft.	340	8.38"	3 3/4"	3400 RPM	60000 lbs.-in.	31	43 Lbs.	RFQ
A	GCH340-35	349 lbs.-sq. ft.	340	8.38"	3 3/4"	3400 RPM	60000 lbs.-in.	35	44 Lbs.	RFQ
A	GCH412-42	1373 lbs.-sq. ft.	412	11"	4 1/2"	2500 RPM	180000 lbs.-in.	42	106 Lbs.	RFQ
A	GCH412-45	1387 lbs.-sq. ft.	412	11"	4 1/2"	2500 RPM	180000 lbs.-in.	45	108 Lbs.	RFQ
A	GCH412-50	1418 lbs.-sq. ft.	412	11"	4 1/2"	2500 RPM	180000 lbs.-in.	50	112 Lbs.	RFQ
A	GCH424-55	7157 lbs.-sq. ft.	424	15"	6.88"	1800 RPM	360000 lbs.-in.	55	278 Lbs.	RFQ
A	GCH424-60	7277 lbs.-sq. ft.	424	15"	6.88"	1800 RPM	360000 lbs.-in.	60	284 Lbs.	RFQ
A	GCH456-70	19517 lbs.-sq. ft.	456	18"	8"	1500 rpm	840000 lbs.-in.	70	527 lbs.	RFQ
A	GCH456-75	19793 lbs.-sq. ft.	456	18"	8"	1500 rpm	840000 lbs.-in.	75	538 Lbs.	RFQ
A	GCH511-80	54372 lbs.-sq. ft.	511	22"	10"	1200 RPM	1650000 lbs.-in.	80	964 lbs.	RFQ
A	GCH511-85	55013 lbs.-sq. ft.	511	22"	10"	1200 RPM	1650000 lbs.-in.	85	980 lbs.	RFQ
A	GCH511-92	64414 lbs.-sq. ft.	511	22"	10"	1200 RPM	1650000 lbs.-in.	92	1108 lbs.	RFQ

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