Lovejoy Coupler, L100 X 3/4"

The L100.750 Lovejoy Coupler Hub is a jaw-style coupling hub (L100 size) built from sintered iron and designed to pair with a matching hub and an SOX (NBR/Buna-N) rubber spider to provide flexible, shock-absorbing power transmission. Its jaw design helps protect driveline components with no metal-to-metal contact, remains fail-safe if the elastomer fails, and resists common contaminants like oil, dirt, moisture, grease, and sand—making it a reliable choice for general industrial power transfer.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: L100.750 (Description: L100-HUB-3/4-3/16X3/32KW)
• Brand / Series: Lovejoy L
• Product Type: Jaw coupling hub
• Coupling Size: L100
• Hub Style: Style 1
• Material: Sintered iron
• Color: Metallic
• # of Jaws: 3
• Bore Size: 3/4 in
• Keyway Size (W x D): 3/16 x 3/32 in
• Elastomeric Member: SOX (NBR/Buna-N) rubber spider
• Overall Length: 3.480 in (88.39 mm)
• Hub Length: 2.09 in (53.09 mm)
• Length Thru Bore: 1.38 in (35.05 mm)
• Outside Diameter: 2.54 in (64.52 mm)
• Min Bore (ID1/ID2): 0.437 in (11.00 mm)
• Max Bore (ID1/ID2): 1.375 in (35.00 mm)
• Nominal Torque: 417 in·lb
• Max Speed: 7,000 rpm
• Rated HP: 0.66 hp @ 100 rpm | 7.92 hp @ 1,200 rpm | 11.90 hp @ 1,800 rpm | 23.76 hp @ 3,600 rpm
• Weights: Hub: 1.52 lb | Complete coupling (max bores): 3.20 lb | Complete coupling (min bores): 2.40 lb
• Spider Material Notes: Oil resistant; operating range -40° to 212°F (-40° to 100°C) (Buna-N)
• Design Benefits: Fail-safe, no metal-to-metal contact, resists oil/dirt/sand/moisture/grease

Ideal For

• Power transmission setups needing a flexible jaw coupling to reduce shock and vibration
• Applications using an L100 coupling with a 3/4" bore and keyed shaft
• Equipment exposed to oil, moisture, dirt, and debris where contaminant resistance matters
• Drivelines where fail-safe operation is preferred if the elastomer spider wears or fails