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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 3/4 in

Bearing Style

N/A NA – Food Safe

Bearing Number

N/A NAU4LK204-12

Housing Material

N/A Hygienic Blue Thermoset (Polymer)

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 2.690 in68.3 mm

Width A0

N/A 2.098 in53.3 mm

Bolt Hole Spacing J

N/A 3.532 in89.7 mm

Base Thickness A1

N/A 1.059 in26.9 mm

Housing Width A

N/A 1.563 in39.7 mm

Bolt Hole Size N

N/A 0.406 in10.3 mm

Center of Bearing from Housing End A2

N/A 1.220 in31.0 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