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Black Buna-N spider insert for L099/L100 coupling, 2 17/32 in diameter

Lovejoy

Lovejoy L099N Buna N Spider Insert L099 L100 2 17/32 in

SKU CH-MSJQ-4N3JV

Buna-N spider insert for L099 and L100 couplings, 2 17/32 in outside diameter, rated to 7,000 RPM and 318 in-lb torque with 80A durometer hardness

  • Buna-N material resists oil and abrasion
  • Rated for 7,000 RPM continuous operation
  • Transmits 318 in-lb maximum torque
  • Allows 0.015 in parallel misalignment
  • Fail-safe design protects connected equipment

Coupling Insert for L099 and L100 Hubs

This Buna-N spider insert fits Lovejoy L099 and L100 coupling hubs with a 2 17/32 in outside diameter. It transmits up to 0.66 hp at 100 RPM and handles a maximum torque of 318 in-lb. The 80A durometer spider provides fail-safe operation and suits general industrial power-transmission duties.

Replaces Worn Spider Elements in Existing Couplings

Use this insert when the original spider shows cracking, compression set or excessive backlash. The Buna-N material restores the coupling’s rated parallel misalignment of 0.015 in and angular capacity of 1 degree. The jump is worth it when vibration or heat has degraded the old element and the hubs remain serviceable.

Verify Hub Size, Speed and Misalignment Needs

Confirm your hubs are marked L099 or L100 and that the maximum bore does not exceed 1 7/16 in. Ensure the application speed stays at or below 7,000 RPM. Buyers needing higher torque capacity, different misalignment allowances or a non-Buna spider material should select an alternative insert.

Highlights

  • Buna-N material resists oil and abrasion
  • Rated for 7,000 RPM continuous operation
  • Transmits 318 in-lb maximum torque
  • Allows 0.015 in parallel misalignment
  • Fail-safe design protects connected equipment

Specifications

No published specifications for this item yet.

Questions about this item

What outside diameter must my coupling hubs accept for this Buna N spider insert?

The spider insert has an outside diameter of 2 17/32 in and fits Lovejoy L099 and L100 coupling sizes.

How do I install the Buna N spider insert and what step is commonly missed?

Insert the spider between the two hub jaws, align the hubs within 0.015 in parallel and 1 degree angular misalignment, then tighten hub set screws; the step often missed is verifying both alignment limits before final tightening.

When should I replace the Buna N spider insert?

Replace the spider when the Buna-N material shows cracking, excessive wear, or when vibration indicates the 80A durometer hardness has degraded beyond the 318 in-lb torque rating.

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