Heavy Duty 3J Coupling Insert With Durable EPDM Rubber Spider Built For Rock Solid Power Transfer Measures 1 Inch Wide By 1 7 8 Inch Outside Diameter Offers Serious Oil Resistance And Handles Heavy Torque Loads Without Missing A Beat In Any Rig

Durable EPDM 3J Sleeve Coupling Insert For Industrial Pumps
✔️ EPDM Spider 1 Inch Width Fits 3J Hubs With High Torque Support

You see a rugged 3J coupling insert built from solid EPDM rubber. This black spider replaces worn-out parts in your jaw coupling systems for compressors and blowers. It grabs torque smoothly and keeps your shafts aligned even when vibration knocks things around.

✅ Oil Tough Build: EPDM stands up to oil and common chemicals while holding steady between minus 30 and 275 F.
✅ Handles Big Stress: Cranks 78 in-lb torque with a firm 229 in-lb per radian twist rate that delivers instant response.
✅ Fixes Misalignment: Allows small shifts like 0.01 inch offset or 1 degree angle to save your bearings from wear.
✅ Absorbs Shocks: Flexes four ways to soak up hammer-like impacts and end float so your machinery runs smooth.
✅ Direct Replacement: Designed to drop right into standard 3J or 3JE hubs matching the 1 inch width and 1-7/8 inch diameter.

💡 How does a heavy duty coupling insert stay handy when machines run hot and shake?
This rugged 3J rubber spider acts as a flexible buffer that protects expensive shafts from sudden shocks and misalignment damage while transmitting power efficiently.
- EPDM material offers excellent resistance to oils and greasy workshop fluids so your spare parts last longer under pressure.
- The four way flex design compensates up to 0.01 inch parallel offset which prevents premature wear on adjacent bearings and seals.
- Rated for 78 in-lb torque and speeds near 9200 RPM this insert handles serious mechanical stress without twisting out of shape.

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