Lovejoy Coupler, L110 X 1-3/8"

The L1101.375 Lovejoy Coupler Hub is a durable L110 jaw coupling hub designed for smooth, reliable power transmission while helping reduce shock and vibration when paired with the proper Lovejoy spider. Constructed from sintered iron with 3 jaws and a SOX (NBR/Buna-N) rubber elastomeric member, it delivers strong torque capacity and high-speed capability, with excellent resistance to common contaminants like oil, dirt, moisture, and grease. The jaw coupling design is fail-safe, meaning it can continue to function if the elastomer element fails—without metal-to-metal contact during normal operation.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: L1101.375
• Description: L110-HUB-1-3/8-5/16X5/32KW
• Brand: Lovejoy
• Coupling Size: L110
• Coupling Type: Jaw
• Hub Style: 1
• Material: Sintered iron
• Color / Finish: Metallic
• # of Jaws: 3
• Elastomeric Member: SOX (NBR/Buna-N) rubber
• Bore Size: 1-3/8"
• Keyway Size (W x D): 5/16" x 5/32"
• Length Thru Bore: 1.68" (42.67 mm)
• Hub Length: 2.56" (65.02 mm)
• Overall Length: 4.220" (107.19 mm)
• Outside Diameter: 3.32" (84.33 mm)
• Min Bore Range: 0.625" (16.00 mm)
• Max Bore Range: 1.625" (41 mm)
• Dimension G: 0.88" (22.35 mm)
• Dimension SL: 0.750" (19.05 mm)
• Dimension T: 3/8-16
• Cubic Inches: 28.21734 in³
• Nominal Torque: 792 in·lb
• Max Speed: 5000 rpm
• Rated HP: 1.26 hp @ 100 rpm; 15.12 hp @ 1,200 rpm; 23.00 hp @ 1,800 rpm; 45.36 hp @ 3,600 rpm
• Weight: 2.67 lb
• Complete Coupling Weight (Max Bores): 6.60 lb
• Complete Coupling Weight (Min Bores): 5.30 lb
• Spider Material Notes (NBR/Buna-N): Operates -40°F to 212°F (-40°C to 100°C); oil resistant; standard elastomer
• Features: Fail-safe design; no metal-to-metal contact; resists oil, dirt, sand, moisture, grease; broad bore size availability

Ideal For

• Power transmission setups using Lovejoy L110 jaw couplings
• Applications needing vibration reduction with an NBR (Buna-N) spider
• Environments exposed to oil, dirt, sand, moisture, and grease
• Equipment requiring up to 792 in·lb nominal torque and 5000 rpm capability
• Users needing a 1-3/8" bore hub with 5/16" x 5/32" keyway for proper shaft fitment