Lovejoy Coupler, L070 X 7/16"

Lovejoy Coupler, L070 X 7/16"

The L070.4375 Lovejoy Coupler Hub is a precision jaw-type coupling hub designed to connect rotating shafts while reducing vibration and shock loads in power transmission systems. Built from durable sintered iron, this hub fits L070 series jaw couplings and features a 7/16 in. bore with a 3/32 in. x 3/64 in. keyway for secure shaft engagement. When paired with the appropriate SOX (NBR/Buna-N) rubber spider, it creates a flexible coupling that transmits torque while helping absorb misalignment and vibration—because machinery usually runs a lot smoother when the connection between shafts has a little flexibility.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: L070.4375
• Brand: Lovejoy
• Product Type: Jaw coupling hub
• Coupling Size: L070
• Hub Style: Style 1
• Bore Size: 7/16 in.
• Keyway Size (W × D): 3/32 in. × 3/64 in.
• Material: Sintered iron
• Coupling Type: Jaw
• Number of Jaws: 2
• Compatible Elastomer: SOX spider (NBR / Buna-N rubber)
• Length Through Bore: 0.750 in.
• Overall Length: 1.980 in.
• Outside Diameter: 1.36 in.
• Hub Length: 1.230 in.
• Max Bore Capacity: 0.750 in.
• Nominal Torque Rating: 43.2 in-lb
• Maximum Speed: 14,000 RPM
• Set Screw Size: 1/4"-20
• Weight: 0.24 lb

Spider / Elastomer Performance

• Material: Nitrile Butadiene (Buna-N) Rubber
• Temperature Range: -40°F to 212°F
• Characteristics: Oil resistant, flexible, and resilient
• Function: Absorbs shock, vibration, and minor misalignment

Ideal For

• Power transmission systems connecting electric motors to equipment
• Pumps, compressors, and light industrial machinery
• Agricultural and shop equipment drives
• Applications requiring vibration damping and flexible shaft connection
• Mechanics who appreciate couplings that keep shafts working together instead of arguing with each other