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Designed to be corrosion resistant and lubrication free, Mounted Poly-Round Plain Bearings are ideal for applications where sanitation and contamination are critical concerns. Manufacturers in the food and beverage industry can trust our mounted bearings to extend bearing life, improve production uptime and – most importantly – elevate food safety.
Meet these challenges head-on with Timken. Our Mounted Poly Round Plain Bearings are engineered for the harsh environmental conditions of food and beverage processing, including aggressive washdowns, wide temperature ranges, stringent food safety requirements and common washdown chemicals.

Unit of Measure

Key Dimensions

Bore Size

N/A 20 mm

Bearing Style

N/A ON – Metal detectable

Bearing Number

N/A ONU4LK204

Housing Material

N/A Cast Stainless Steel

DoubleLock® Style

N/A Standard

Housing Construction

N/A Two-Bolt Flange

Other Dimensions

Total Length H

N/A 4.407 in111.9 mm

Total Height L

N/A 2.420 in61.5 mm

Width A0

N/A 1.972 in50.1 mm

Bolt Hole Spacing J

N/A 3.532 in89.7 mm

Base Thickness A1

N/A 0.940 in23.9 mm

Housing Width A

N/A 1.530 in38.9 mm

Bolt Hole Size N

N/A 0.406 in10.3 mm

Center of Bearing from Housing End A2

N/A 1.094 in27.8 mm

Center of Bearing from Bearing End S

N/A 0.437 in11.1 mm

Locking Sleeve Width B1

N/A 1.346 in34.2 mm

Locking Collar Outside Diameter d1

N/A 1.614 in41.0 mm