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21 Series Light-Medium Duty Casters - 4 Inch

Manufacturer: Stromberg

In Stock

Discount Applied:
10-39  SAVE 10%
40-79  SAVE 20%
80+  Please Inquire


Great general use casters with a variety of wheel type options available. Ideal replacement casters for home, office and industrial furniture and equipment.

  • Overall Height: 5-1/8".
  • Top Plate: 2-1/2"x3-5/8".
  • Bolt Hole Spacing: 1-3/4"x2-7/8" to 3"
  • Wheels: 4"Dx1-1/4"W.
  • Available colors: Red or Blue.
  • Custom colors are available only through special order.
If you need a large quantity of this product, call us at 1-800-338-1382 for additional bulk discounts!
  • Model Info

10 Models Available for 21 Series Light-Medium Duty Casters - 4 Inch

  • Prices subject to change without notice

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Model No. Style Wheel Size Overall Height Wheel Type Capacity Weight Price Ea. Qty
21-40S-A1-SBB Swivel 4" Diameter x 1-1/4" Wide 5-1/8" Soft Rubber / Ball Bearing 165 lbs. 2.4 lbs. $8.74
21-40R-A1-SBB Rigid 4" Diameter x 1-1/4" Wide 5-1/8" Soft Rubber / Ball Bearing 165 lbs. 2.4 lbs. $7.93
21-40S-A1-HBB Swivel 4" Diameter x 1-1/4" Wide 5-1/8" Hard Rubber / Ball Bearing 265 lbs. 2.4 lbs. $8.74
21-40R-A1-HBB Rigid 4" Diameter x 1-1/4" Wide 5-1/8" Hard Rubber / Ball Bearing 265 lbs. 2.4 lbs. $7.93
21-40S-A1-RA Swivel 4" Diameter x 1-1/4" Wide 5-1/8" Gray Rubber Tread / Annular Bearing 265 lbs. 2.1 lbs. $10.30
21-40R-A1-RA Rigid 4" Diameter x 1-1/4" Wide 5-1/8" Gray Rubber Tread / Annular Bearing 265 lbs. 2.1 lbs. $8.18
21-40S-A1-HP Swivel 4" Diameter x 1-1/4" Wide 5-1/8" Heavy Duty Plastic 265 lbs. 1.8 lbs. $5.96
21-40R-A1-HP Rigid 4" Diameter x 1-1/4" Wide 5-1/8" Heavy Duty Plastic 265 lbs. 1.8 lbs. $4.34
21-40S-A1-PB Swivel 4" Diameter x 1-1/4" Wide 5-1/8" Polyurethane 265 lbs. 2 lbs. $12.02
21-40R-A1-PB Rigid 4" Diameter x 1-1/4" Wide 5-1/8" Polyurethane 265 lbs. 2 lbs. $10.30
All Items in Red are in Stock

2 Options Available for 21 Series Light-Medium Duty Casters - 4 Inch

21 Series Light-Medium Duty Casters - 4 Inch Option Image

Option:Top Lock Brake

F.O.B. Oregon or California Warehouse

Upgrade Standard caster with optional top lock brake. Priced per caster

Model No. Price Ea. Qty
Top_Lock_Brake $2.99
All Items in Red are in Stock

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Option:Thread Guard

Upgrade standard caster with optional thread guard. Priced per caster.
Model No. Price Ea. Qty
ThreadGuard $1.00
All Items in Red are in Stock

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