Lovejoy Coupler, L090 X 1/2"

The L090.500 Lovejoy Coupler Hub (L090 x 1/2") is a jaw-style coupling hub built to deliver reliable torque transmission with vibration dampening when paired with the appropriate Lovejoy L090 components and SOX (NBR) spider. Made from sintered iron and designed to avoid metal-to-metal contact, it’s a solid choice for power transmission setups that want smooth operation—because your equipment shouldn’t rattle like it’s auditioning for a percussion section.

Country of Origin
Varies by production batch

Key Features / Specifications

• Part / Description: L090-HUB-1/2-1/8X1/16KW
• Product Type: Jaw coupling hub
• Coupling Size: L090
• Hub Style: Style 1
• Coupling Type: Jaw
• Material: Sintered iron
• Color/Finish: Metallic
• # of Jaws: 3
• Elastomeric Member: SOX (NBR) rubber spider (used with complete coupling)
• Bore Size: 1/2 in
• Keyway Size (W x D): 1/8 x 1/16 in
• Length Thru Bore: 0.82 in (20.83 mm)
• Overall Length: 2.150 in (54.61 mm)
• Outside Diameter: 2.11 in (53.59 mm)
• Hub Length: 1.32 in (33.53 mm)
• Min Bore (ID1/ID2): 0.250 in (6 mm)
• Max Bore (ID1/ID2): 1.000 in (25.00 mm)
• Dimension G: 0.52 in (13.21 mm)
• Dimension SL: 0.440 in (11.18 mm)
• Thread (Dimension T): 1/4-20
• Volume: 5.87677 in³
• Weight (Hub): 0.63 lb
• Weight (Complete Coupling, Max Bores): 1.50 lb
• Weight (Complete Coupling, Min Bores): 1.20 lb
• Nominal Torque: 144 in·lb
• Max Speed: 9000 rpm
• Rated HP: 0.23 hp @ 100 rpm; 2.76 hp @ 1,200 rpm; 4.11 hp @ 1,800 rpm; 8.28 hp @ 3,600 rpm
• Spider Material Notes: NBR (Buna-N) oil-resistant, operating range -40° to 212°F (-40° to 100°C)

Ideal For

• Power transmission applications needing an L090 jaw coupling hub with a 1/2" bore and keyway
• Setups that benefit from vibration dampening and reduced shock loading with an NBR spider
• Environments with exposure to oil, dirt, moisture, sand, and grease
• Users who want fail-safe operation (continues to function even if the elastomer fails)
• High-speed applications up to 9000 rpm where proper alignment and component matching are maintained