H Type – Highest Torque Jaw Coupling (Discontinued)

PLEASE NOTE: The H Type product line is discontinued. Contact Lovejoy Customer Service on availability of component part items at CustomerService@lovejoy-inc.com. This page is for informational purposes only.

Highest torque and bore capacity jaw coupling (compared to L & C Type)
Elastomeric cushions are radially removable
Accommodates for angular and parallel shaft misalignment
Fail-safe (will still perform if elastomeric cushions fail)
No coupling grease required; no metal to metal contact
Resistant to oil, dirt, sand, moisture, and grease

Resources

H Type – Highest Torque Jaw Coupling Additional Resources

Dimensional Data

A full H Type coupling is comprised of 4 components:

2 cast iron hubs (each including an inside sleeve)
1 elastomeric cushion set (SOX, Hytrel®, or Bronze)
1 collar w/ hardware

Nominal Rated Torque Data (Standard Catalog)

Max Bore		Spider Material
			SOX (NBR) Torque		Urethane Torque		Hytrel® Torque		Bronze Torque
Size	in	Mm	in-lbs	Nm	in-lbs	Nm	in-lbs	Nm	in-lbs	Nm
H3067	4.5	114	33,395	3774	—	—	47,196	5333	47,196	5333
H3567	5	127	46,632	5269	—	—	63,000	7119	63,000	7119
H3667	5.629	143	64,812	7323	—	—	88,200	9966	88,200	9966
H4067	6.25	159	88,224	9969	—	—	126,000	14237	126,000	14237
H4567	7	178	119,700	13524	—	—	170,004	19209	170,000	19209

Note: Bronze has a maximum RPM capability of 250 RPM.

Elastomeric Cushion Performance Data (Standard Catalog)

Material	Temperature Range	Misalignment		Shore Hardness	Dampening Capacity	Chemical Resistance	Color
		Angular	Parallel
SOX (NBR) Rubber – Nitrile Butadiene (Buna N) Rubber is a flexible elastomer material that is oil resistant, resembles natural rubber in resilience and elasticity.	-40°F to 212°F (-40°C to 100°C)	1°	0.015	80A	High	Good	Black
Hytrel® – Flexible elastomer designed for high torque and high temperature operations. Excellent resistance to oil and chemicals. Not recommended for cyclic or start/stop applications.	-60°F to 250°F (-51°C to 121°C)	1/2°	0.015	55D	Low	Excellent	Tan
Bronze – Rigid, porous oil-impregnated metal insert exclusively for low speed (max 250 RPM) applications requiring high torque capabilities. Not affected by extreme temperatures, water, oil, or dirt.	-40°F to 450°F (-40°C to 232°C)	1/2°	0.01	–	None	Excellent	Bronze

Note: Cushions are held in place radially by a steel collar.

3D CAD Files (for download)

Please Note: CAD Files are located in the digital catalog.

For additional documentation (in PDF form), please download the Jaw Coupling catalog (pdf) or contact Lovejoy customer service.

Alternative Jaw Products

For Smaller Max Bore or Smaller Torques: see L Type or C Type
For Radial Removable w/ Spacer: see RRC Type
For European Standard: see Curved Jaw – CJ Type
Or, for other coupling types: see Coupling Preselection Guide

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