Lovejoy Coupler, L100 X 1-3/8"

The L1001.375 Lovejoy Coupler (L100 × 1-3/8") is a jaw-style shaft coupling hub designed to provide reliable torque transmission with vibration dampening using a SOX (NBR/Buna-N) elastomer spider. Built with a fail-safe jaw design (continues to transmit motion if the elastomer fails) and no metal-to-metal contact, it helps protect driveline components while resisting common contaminants like oil, dirt, moisture, and grease—ideal for a wide range of industrial power transmission setups.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: L1001.375
• Description: L100-HUB-1-3/8-5/16X5/32KW
• Brand: Lovejoy
• Coupling Type: Jaw
• Coupling Size: L100
• Hub Style: Style 1
• Material: Sintered iron
• Color: Metallic
• # of Jaws: 3
• Elastomeric Member: SOX spider (NBR / Buna-N rubber)
• Bore Size: 1-3/8" (1.375")
• Keyway Size (W × D): 5/16" × 5/32"
• Length Thru Bore: 1.38" (35.05 mm)
• Hub Length: 2.09" (53.09 mm)
• Overall Length: 3.480" (88.39 mm)
• Outside Diameter: 2.54" (64.52 mm)
• Min Bore (ID1/ID2): 0.438" (11.00 mm)
• Max Bore (ID1/ID2): 1.375" (35.00 mm)
• Dimension G: 0.71" (18.03 mm)
• Dimension SL: 0.440" (11.18 mm)
• Dimension T: 5/16-18
• Cubic Inches: 13.48384 in³
• Nominal Torque: 417 in-lb
• Max Speed: 7000 RPM
• Rated HP @ 100 RPM: 0.66 HP
• Rated HP @ 1200 RPM: 7.92 HP
• Rated HP @ 1800 RPM: 11.90 HP
• Rated HP @ 3600 RPM: 23.76 HP
• Spider Temp Range (NBR): -40°F to 212°F (-40°C to 100°C)
• Weight (Hub): 1.19 lb
• Weight (Complete Coupling, Max Bores): 3.20 lb
• Weight (Complete Coupling, Min Bores): 2.40 lb

Ideal For

• Power transmission where a jaw coupling helps reduce vibration and shock loads
• Applications needing a 1-3/8" bore with a 5/16" × 5/32" keyway
• Systems requiring oil-resistant Buna-N (NBR) spider performance
• Equipment exposed to oil, dirt, sand, moisture, and grease
• Drives requiring dependable performance with a fail-safe design and no metal-to-metal contact