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Lovejoy

Lovejoy L225 Jaw Coupling Hub 60 mm Cast Iron

SKU CH-SA8S-MMHKE

A cast-iron jaw coupling hub with a 60 mm bore and 18 mm keyway, rated to 4,600 RPM and compatible with L190 series centre elements

  • 60 mm bore fits 60 mm shafts directly
  • Cast iron hub rated to 4,600 RPM for heavy-duty drives
  • Three spider choices deliver 3.7, 5.6 or 9.9 hp at 100 RPM
  • 18 mm keyway with 4.4 mm depth locks torque securely
  • 127 mm OD and 137 mm length suit compact installations

Application fit

The Lovejoy L225 jaw coupling hub connects two shafts in metric power-transmission systems. It suits maintenance engineers and OEM assemblers who need a 60 mm bore with an 18 mm keyway on cast-iron hubs rated for continuous industrial duty.

Thermals noise power

The hub itself generates no heat or noise; thermal and acoustic performance depends on the chosen spider element and alignment quality. At 4,600 RPM the cast-iron hub handles up to 9.9 hp at 100 RPM with a Hytrel spider, 5.6 hp with urethane, or 3.7 hp with Buna-N.

Build integration

The straight-jaw profile accepts L190H, L190N or L190U centre elements, letting the builder select stiffness and damping without changing hubs. A 4.4 mm keyway depth and set-screw locking secure the hub to the shaft, while the 127 mm outside diameter and 137 mm overall length define the envelope the surrounding guards and brackets must clear.

Highlights

  • 60 mm bore fits 60 mm shafts directly
  • Cast iron hub rated to 4,600 RPM for heavy-duty drives
  • Three spider choices deliver 3.7, 5.6 or 9.9 hp at 100 RPM
  • 18 mm keyway with 4.4 mm depth locks torque securely
  • 127 mm OD and 137 mm length suit compact installations

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the L225 hub on a 60 mm shaft and what step is often missed?

Slide the hub onto the shaft, align the 18 mm keyway with the shaft key, then tighten the set screw over the key — the step often missed is confirming the 4.4 mm keyway depth is fully engaged before locking.

Which spider will need replacement first and how do I identify it?

The Buna-N spider (part L190N) wears fastest; inspect the jaws for rounded teeth or vibration — replace with the same L190N, L190U (urethane) or L190H (Hytrel) element when play appears.

At 4 600 RPM what limit appears first during continuous operation?

The 4 600 RPM maximum speed rating is the first limit; sustained operation at or above this speed risks hub fatigue regardless of the 3.7 hp (Buna-N), 5.6 hp (urethane) or 9.9 hp (Hytrel) torque capacity at 100 RPM.

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