Lovejoy
Lovejoy L100 35 mm Jaw Coupling Hub
35 mm bore jaw coupling hub rated to 7 000 RPM with 64 mm outside diameter and 89 mm overall length
- 35 mm bore fits standard metric shafts
- Carbon steel hub handles 7,000 RPM operation
- Three spider options deliver up to 1.8 hp at 100 RPM
- 10 mm keyway with 3.3 mm depth secures torque transfer
- 64 mm diameter suits L100 coupling assemblies
Jaw Coupling Hub L100 35 mm Bore
The Lovejoy L100 hub is a carbon-steel jaw coupling component with a 35 mm round bore and standard keyway. It fits metric shafts and uses set-screw locking for secure attachment in power-transmission assemblies. The straight-jaw profile accepts L100 series Buna-N, urethane or Hytrel centre elements.
Interchangeable Centre Elements
Swapping the spider changes the torque rating without replacing the hubs. A Buna-N spider delivers 0.66 hp at 100 RPM, urethane raises it to 1 hp and Hytrel provides 1.8 hp at the same speed. This lets the same hub pair cover light to heavy-duty cycles by changing only the centre element.
Speed and Power Envelope
Maximum rated speed is 7,000 RPM, giving ample headroom for most industrial motor speeds. At 100 RPM the hub transmits up to 1.8 hp with a Hytrel spider, but output drops proportionally at higher speeds. The design does not suit applications that exceed the 7,000 RPM limit or require torque beyond the spider ratings.
Highlights
- 35 mm bore fits standard metric shafts
- Carbon steel hub handles 7,000 RPM operation
- Three spider options deliver up to 1.8 hp at 100 RPM
- 10 mm keyway with 3.3 mm depth secures torque transfer
- 64 mm diameter suits L100 coupling assemblies
Specifications
No published specifications for this item yet.
Questions about this item
Will the 35 mm bore set-screw hub need periodic re-torquing or replacement of the set screw under vibration?
The set-screw locking method relies on friction; vibration can loosen the screw over time so scheduled re-torquing is recommended, and a damaged screw should be replaced with an equivalent metric set screw.
At 7,000 RPM what limit appears first — torque capacity of the Buna-N spider or the hub’s mechanical rating?
With a Buna-N spider the coupling transmits only 0.66 hp at 100 RPM, so torque capacity of the elastomer element is reached well before the carbon-steel hub hits its mechanical limit.
How much heat does the L100 hub generate when running continuously at 7,000 RPM with a Buna-N spider?
The carbon-steel hub itself produces negligible heat; temperature rise comes from hysteresis in the Buna-N spider, which is rated for continuous operation at the stated 0.66 hp / 100 RPM loading.
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