C Type – Higher Torque Jaw Coupling
- Greater torque and bore capacity (compared to L type)
- Elastomeric cushions are radially removable
- Accommodates for angular and parallel shaft misalignment
- Fail-safe (will still perform if elastomeric cushions fail)
- No metal to metal contact
- Resistant to oil, dirt, sand, moisture, and grease
- Industry’s largest available selection from stock
C Type – Higher Torque Jaw Coupling Additional Resources
Click here to access Lovejoy’s Dimensional Data for C Type components.
A full C Type coupling is comprised of 4 parts:
- 2 cast iron hubs
- 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 |
|
C226 |
2.5 |
64 |
2,988 |
338 |
— |
— |
5,940 |
671 |
5,940 |
671 |
|
C276 |
2.875 |
73 |
4,716 |
533 |
— |
— |
9,432 |
1066 |
— |
— |
|
C280 |
3 |
76 |
7,560 |
854 |
— |
— |
13,866 |
1567 |
— |
— |
|
C285 |
4 |
102 |
9,182 |
1038 |
— |
— |
16,680 |
1882 |
— |
— |
|
C2955 |
3.5 |
89 |
11,340 |
1281 |
— |
— |
22,680 |
2563 |
22,680 |
2563 |
|
C2955 |
4 |
102 |
18,900 |
2136 |
— |
— |
37,800 |
4271 |
37,800 |
4271 |
Note: Bronze has a maximum RPM capability of 250 RPM.
|
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 |
Note: Cushions are held in place radially by a steel collar.
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
- For Larger Max Bore or Higher Torques: see H Type
- For Aluminum or Stainless Steel: see AL Type or SS Type
- For Radial Removable Spiders: see SW Type or LC Type
- For Radial Removable w/ Spacer: see RRS/RRSC Type or RRC Type
- For Non-Fail Safe: see Jaw-In-Shear Type
- For Backlash Free: see Curved Jaw – GS 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”.