H Type – Highest Torque Jaw Coupling
- 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
H Type – Highest Torque Jaw Coupling Additional Resources
Click here to access Lovejoy’s Digital Parts Catalog for H Type components.
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
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 |
Material |
Temperature |
Misalignment |
Shore |
Dampening |
Chemical |
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 |
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 |
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 |
1/2° |
0.01 |
– |
None |
Excellent |
Bronze |
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.
- 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
- For a broad overview on Lovejoy jaw couplings, please consider reading: Jaw Coupling Overview – Features & Benefits, Design Basics, and Element Options.
- While Lovejoy jaw couplings are designed to handle a lot of abuse, the jaw coupling elastomeric spider is a wearing element that will eventually need to be replaced. To review how and why jaw couplings wear out, please read: Coupling Failure Analysis – Jaw Couplings (includes hub & spider photos).
- Estimating the life of a jaw coupling is difficult as it is application specific. To dive deeper into this question, check out: Jaw Coupling Question – “How Much Life Can I Expect Out of the Spider”.