Lovejoy Coupler, L110 X 1-1/8"

The Lovejoy L1101.125 jaw coupler hub (L110 × 1-1/8") is a rugged, flexible coupling solution designed to transmit torque while damping vibration and misalignment—helping your drivetrain run smoother and your bearings live longer. Built from sintered iron and paired with a SOX (NBR/Buna-N) rubber spider, it offers oil resistance and reliable performance in harsh shop and field environments. It’s also fail-safe, meaning it can still function if the elastomer ever gives up (unlike some of us on Monday mornings).

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: L1101.125
• Description: L110-HUB-1-1/8-1/4X1/8KW
• Brand: Lovejoy
• Coupling Type: Jaw
• Coupling Size: L110
• Hub Style: 1
• Material: Sintered iron
• Elastomeric Member: SOX (NBR/Buna-N) rubber spider
• # of Jaws: 3
• Bore Size: 1-1/8 in
• Keyway Size (W × D): 1/4 × 1/8 in
• Length Thru Bore: 1.68 in (42.67 mm)
• Hub Length: 2.56 in (65.02 mm)
• Overall Length: 4.220 in (107.19 mm)
• Outside Diameter: 3.32 in (84.33 mm)
• Min Bore (ID1/ID2): 0.625 in (16.00 mm)
• Max Bore (ID1/ID2): 1.625 in (41 mm)
• Dimension G: 0.88 in (22.35 mm)
• Dimension SL: 0.750 in (19.05 mm)
• Dimension T: 3/8-16
• Cubic Inches: 28.21734 in³
• Weight: 2.85 lb
• Complete Coupling Weight (Max Bores): 6.60 lb
• Complete Coupling Weight (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 Temp Range: -40°F to 212°F (-40°C to 100°C)
• Resistance: Oil resistant; resists oil, dirt, sand, moisture, and grease
• Design Benefits: Fail-safe, no metal-to-metal contact, broad configuration compatibility (many bore combinations)

Ideal For

• Power transmission setups needing a flexible jaw coupling to reduce shock and vibration
• Equipment where oil resistance and environmental durability matter
• Applications requiring 1-1/8" bore with 1/4" × 1/8" keyway
• Drives where you want protection against misalignment (and fewer “why is it vibrating?” mysteries)