Lovejoy Coupler, L100 X 1-1/8"

The L1001.125 Lovejoy Coupler (L100 x 1-1/8") is a jaw-style flexible coupling hub designed to deliver reliable torque transfer with vibration damping in demanding power transmission applications. Built from sintered iron and paired with a SOX (NBR) rubber elastomer, it provides oil-resistant flexibility, helps reduce shock loads, and features a fail-safe design that can continue operating even if the elastomeric member is compromised.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: L100-HUB-1-1/8-1/4X1/8KW
• Brand / Series: Lovejoy L-100
• Product Type: Jaw coupling hub
• Coupling Type: Jaw
• Coupling Size: L100
• Hub Style: Style 1
• Material: Sintered Iron
• Color/Finish: Metallic
• # of Jaws: 3
• Elastomeric Member: SOX (NBR) Rubber
• Bore Size: 1-1/8 in
• Keyway Size (W x D): 1/4 x 1/8 in
• Length Thru Bore: 1.38 in (35.05 mm)
• Overall Length: 3.480 in (88.39 mm)
• Hub Length: 2.09 in (53.09 mm)
• Outside Diameter: 2.54 in (64.52 mm)
• Min Bore (ID1/ID2): 0.438 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
• Weight (Hub): 1.34 lb
• Weight (Complete Coupling): 2.40 lb (min bores) / 3.20 lb (max bores)
• Operating Temperature Range (NBR Spider): -40°F to 212°F (-40°C to 100°C)
• Key Design Benefits: Fail-safe operation, no metal-to-metal contact, resists oil/dirt/sand/moisture/grease

Ideal For

• Power transmission setups needing flexible misalignment compensation and shock absorption
• Environments where oil resistance and contamination resistance matter (shops, field equipment, dusty areas)
• Applications that benefit from no metal-to-metal contact to reduce wear and vibration
• High-speed systems up to 7,000 rpm within rated load limits
• Users needing a common, configurable coupling platform with many bore size combinations