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Cast iron jaw coupling hub L225 40 mm bore 127 mm OD 137 mm length

Lovejoy

Lovejoy L225 40 mm jaw coupling hub

SKU CH-E8A4-11Z2S

Cast iron jaw coupling hub with 40 mm bore, 127 mm outside diameter and 137 mm overall length, rated to 4,600 RPM

  • 40 mm bore fits 40 mm shafts directly
  • 12 mm keyway width with 3.3 mm depth transmits torque securely
  • Cast iron hub rated for 4,600 RPM maximum speed
  • Set screw locking holds hub firmly on shaft
  • Compatible with L190 Buna-N, Urethane and Hytrel spiders

Jaw Coupling Hub L225 40 mm Bore

The Lovejoy L225 jaw coupling hub is a cast iron power transmission component with a 40 mm round bore and keyway. It uses a set screw locking method and a straight jaw profile. This hub suits maintenance engineers and OEM builders assembling metric drive lines on pumps, conveyors or general industrial machinery.

Cast Iron Hub Rated 4 600 RPM

The hub carries a maximum speed rating of 4 600 RPM and transmits 3.7 hp at 100 RPM with a Buna-N spider, 5.6 hp with a urethane spider or 9.9 hp with a Hytrel spider. Cast iron construction provides rigidity and heat dissipation during continuous operation. No separate cooling or lubrication is required for the hub itself.

127 mm OD Hub Accepts L190 Elements

The 127 mm outside diameter and 137 mm overall length determine spacing between connected shafts. The hub pairs with L190H, L190N or L190U centre elements, letting the builder choose spider material for torque damping or chemical resistance. A 12 mm wide by 3.3 mm deep keyway accommodates standard metric keys.

How it compares

Measured against everything we stock in Bearings, Belts & Drive Components, at today’s prices. Recalculated every night.

Price $94.99
Pricier than about 81% of the 693 comparable items (median $35.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the L225 hub on a 40 mm shaft, and what step is often missed?

Slide the cast-iron hub onto the 40 mm round bore with 12 mm keyway and 3.3 mm key depth, insert the key, then tighten both set screws securely; the step often missed is torquing both set screws to lock the hub axially.

What maintenance or replacement will the L225 hub need later?

The hub itself is cast iron and wears slowly; plan to inspect and replace the compatible L190H, L190N or L190U centre element when vibration or backlash appears.

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

The 4 600 RPM maximum speed rating is the first hard limit; exceeding it risks hub or spider failure regardless of the 3.7 hp, 5.6 hp or 9.9 hp torque capacity at 100 RPM.

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