Lovejoy Coupler, L110 X 1-7/16"

The L1101.4375 Lovejoy Coupler Hub is a jaw-type coupling hub built for reliable power transmission with no metal-to-metal contact when paired with a SOX (NBR) rubber spider. This L110 size hub features a 1-7/16" bore with a 3/8" x 3/16" keyway, offering a strong, versatile solution for pumps, motors, gearboxes, and general drive systems where vibration damping and dependable torque transfer are needed.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: L1101.4375
• Description: L110-HUB-1-7/16-3/8X3/16KW
• Brand / Series: Lovejoy L-Type
• Product Type: Jaw coupling hub
• Coupling Size: L110
• Hub Style: Style 1
• Material: Sintered iron
• Elastomeric Member: SOX (NBR) rubber spider (oil resistant)
• # of Jaws: 3
• Bore Size: 1-7/16"
• Keyway Size (W x D): 3/8" x 3/16"
• Thread (Dimension T): 3/8-16
• 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 (ID1/ID2): 0.625" (16.00 mm)
• Max Bore (ID1/ID2): 1.625" (41 mm)
• Dimension G: 0.88" (22.35 mm)
• Dimension SL: 0.750" (19.05 mm)
• Cubic Inches: 28.21734 in³
• Weight (Hub): 2.62 lb
• Weight (Complete Coupling, Max Bores): 6.60 lb
• Weight (Complete Coupling, Min Bores): 5.30 lb
• Nominal Torque: 792 in·lb
• Max Speed: 5000 rpm
• Rated HP @ 100 rpm: 1.26 hp
• Rated HP @ 1,200 rpm: 15.12 hp
• Rated HP @ 1,800 rpm: 23.00 hp
• Rated HP @ 3,600 rpm: 45.36 hp
• Spider Operating Range: -40°F to 212°F (-40°C to 100°C)

Ideal For

• Power transmission setups using Lovejoy L110 jaw couplings
• Drives needing vibration dampening and oil-resistant NBR spider performance
• Applications requiring a 1-7/16" bore hub with 3/8" x 3/16" keyway
• Environments with oil, dirt, moisture, and grease where jaw couplings excel
• Systems needing fail-safe operation (continues to function if elastomer fails)