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4″ Rigid Poly Steel Top Plate 4″ x 4-1/2′


  • 82PU40
  • Offering exceptional quality, functionality, value and availability
  • This caster class is most recognized and commonly used

In stock

If you need assistance in properly calculating the total capacity of your caster requirements, please contact us at (800) 222-7837 or for expert advice in guiding you with the right caster for your application.

Rigid 4" x 2" Poly/Steel Roller Bearing
Top Plate: 4" x 4-1/2"
Bolt Pattern: 2-5/8" x 3-5/8" to 3" x 3"
Mounting Bolt: 3/8"
Overall Height: 5-5/8"
Load Cap: 800 Lbs.

  • Double Ball Bearing Raceway Heat Treated For Long Wear And Added Strength
  • Zinc Plating Standard (Black Oxide Finish Available)
  • 5/8" bolted Kingpin
  • Top Plate And Yoke 1/4" Cold Forged Steel
  • 1/2" diameter Zerk Axle With Lock Nut
  • 3/4" Roller Bearings With Hardened Outer Raceway
  • Hardened Spanner Bushing With Hole And Grease Groove
  • Grease Fitting In Swivel Raceway


Comparable Part Numbers:

  • 16PY04201R
  • 4.04109.949.7
  • 45-UIR-0420R
  • R-524-DB
  • 28PU40JG0417YY
  • TP6640R-01-PCI
  • WC6640R-01-PCI
  • 19505T25

Recommended Applications:

  • Platform Truck
  • Warehouse Trucks
  • Dollies (Machinery)
  • Stock Picking Trucks
  • Freight Terminal Carts
  • Food Service Carts
  • Hotel/Housekeeping Carts
  • Excellent caster for Industrial and Commercial Medium/Heavy duty equipment
Weight 6.60 lbs
Dimensions 4.5 × 4.0 × 5.63 in

3/4" Roller Bearing

Bolt Hole Pattern

2-5/8" x 3-5/8" to 3 x 3


800 Lbs

Caster Type


Mounting Bolt


Overall Height


Tread Width


Top Plate Size

4" x 4-1/2"

Wheel Color

Color May Vary, Green on Black

Wheel Diameter


Wheel Material

Polyurethane on Steel


Albion Casters, Caster Warehouse, Colson Caster, Durable Superior Casters, Hamilton Caster & Mfg. Co., RWM, Superior Casters, Trio Pines Casters

Prop 65 Warning Message

This product may contain chemicals known to the state of CA to cause cancer, and birth defects or other reproductive harm.