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Stromberg 21 Series Light Medium Duty Rigid Caster
  • Stromberg 21 Series Light Medium Duty Rigid Caster
  • Stromberg 21 Series Light Medium Duty Swivel Caster with Brake
  • Stromberg 21 Series Light Medium Duty Swivel Caster with Grip Ring Stem
  • Stromberg 21 Series Light Medium Duty Swivel Caster with Expanding Stem

21 Series Light Medium Duty Casters

Manufacturer: Stromberg

FOB: Oregon WarehouseVolume Discounts Apply

The 21 Series offers the same great features as the 20 Series casters, plus a swivel-bearing dust cap to prolong the swivel bearing life. Ideal for stock carts, bakery racks, food service equipment, sound or music equipment and more.  
 
  • Bright zinc finish.
  • Dust cover helps protect swivel bearings.
  • Raceways and yoke hardened for extra strength.
  • Heavily embossed, formed steel upper and lower cup.
  • Double row ball bearing swivel raceway construction.
  • Octagon top raceway is available.
  • Bolt hole spacing: 1-3/4"x2-15/16" to 2-3/8"x3-3/8".
  • Overall size: 2-3/8"x3-5/8".
  • Attaching bolt size: 5/16".

Note: Casters priced below are equipped with A1 mounting plate. More mounting options can be found in the Options tab. If you need a large quantity of this product, call us at 1-800-338-1382 for additional bulk discounts!

70 Products Available for 21 Series Light Medium Duty Casters

  • Prices subject to change without notice

Products without prices are not available for purchase through our shopping cart.

If you are interested in these products, add them to your quote list by click the red button bellow.

Model No.StyleWheel SizeTypeBearingAxle DiameterOverall HeightSwivel RadiusLoad CapacityPrice Ea.Qty
S21-30-S-A1-SRSwivel3" Diameter x 1-1/4" Tread WidthSoft RubberNylon3/8"4-1/4"2-3/4"125 lbs. $5.35
S21-30-S-A1-SBBSwivel3" Diameter x 1-1/4" Tread WidthSoft RubberBall3/8"4-1/4"2-3/4"125 lbs. $6.93
S21-30-S-A1-HRSwivel3" Diameter x 1-1/4" Tread WidthHard RubberNylon3/8"4-1/4"2-3/4"220 lbs. $5.35
S21-30-S-A1-HBBSwivel3" Diameter x 1-1/4" Tread WidthHard RubberBall3/8"4-1/4"2-3/4"220 lbs. $6.93
S21-30-S-A1-LPSwivel3" Diameter x 1-1/4" Tread WidthLight Duty PlasticPlain3/8"4-1/4"2-3/4"220 lbs. $4.69
S21-30-S-A1-HPSwivel3" Diameter x 1-1/4" Tread WidthHeavy Duty PlasticPlain3/8"4-1/4"2-3/4"300 lbs. $5.07
S21-30-S-A1-PUSwivel3" Diameter x 1-1/4" Tread WidthPolyurethanePlain3/8"4-1/4"2-3/4"220 lbs. $6.83
S21-30-S-A1-PBSwivel3" Diameter x 1-1/4" Tread WidthPolyurethaneBall / Delrin3/8"4-1/4"2-3/4"220 lbs. $8.16
S21-30-S-A1-INFSwivel3" Diameter x 1-1/4" Tread WidthInfinitiAnnular / Delrin3/8"4-1/4"2-3/4"155 lbs. $7.35
S21-30-S-A1-SSSwivel3" Diameter x 1-1/4" Tread WidthSteelPlain3/8"4-1/4"2-3/4"250 lbs. $6.73
S21-35-S-A1-SRSwivel3 1/2" Diameter x 1-1/4" Tread WidthSoft RubberNylon3/8"4-11/16"3-1/16"130 lbs. $7.32
S21-35-S-A1-HRSwivel3 1/2" Diameter x 1-1/4" Tread WidthHard RubberBall3/8"4-11/16"3-1/16"225 lbs. $7.32
S21-35-S-A1-HPSwivel3 1/2" Diameter x 1-1/4" Tread WidthHeavy Duty PlasticPlain3/8"4-11/16"3-1/16"300 lbs. $8.08
S21-35-S-A1-PBSwivel3 1/2" Diameter x 1-1/4" Tread WidthPolyurethaneBall / Delrin3/8"4-11/16"3-1/16"260 lbs. $9.15
S21-35-S-A1-INFSwivel3 1/2" Diameter x 1-1/4" Tread WidthInfinitiAnnular / Delrin3/8"4-11/16"3-1/16"220 lbs. $7.78
S21-35-S-A1-RASwivel3 1/2" Diameter x 1-1/4" Tread WidthGray Rubber or AluminumAnnular3/8"4-11/16"3-1/16"225 lbs. $8.18
S21-40-S-A1-SRSwivel4" Diameter x 1-1/4" Tread WidthSoft RubberNylon3/8"5-1/8"3-5/16"165 lbs. $6.48
S21-40-S-A1-SBBSwivel4" Diameter x 1-1/4" Tread WidthSoft RubberBall3/8"5-1/8"3-5/16"165 lbs. $7.82
S21-40-S-A1-HRSwivel4" Diameter x 1-1/4" Tread WidthHard RubberNylon3/8"5-1/8"3-5/16"265 lbs. $6.48
S21-40-S-A1-HBBSwivel4" Diameter x 1-1/4" Tread WidthHard RubberBall3/8"5-1/8"3-5/16"265 lbs. $7.82
S21-40-S-A1-LPSwivel4" Diameter x 1-1/4" Tread WidthLight Duty PlasticPlain3/8"5-1/8"3-5/16"225 lbs. $5.05
S21-40-S-A1-HPSwivel4" Diameter x 1-1/4" Tread WidthHeavy Duty PlasticPlain3/8"5-1/8"3-5/16"300 lbs. $6.02
S21-40-S-A1-PBSwivel4" Diameter x 1-1/4" Tread WidthPolyurethaneBall / Delrin3/8"5-1/8"3-5/16"275 lbs. $9.21
S21-40-S-A1-RASwivel4" Diameter x 1-1/4" Tread WidthGray Rubber on AluminumAnnular3/8"5-1/8"3-5/16"265 lbs. $9.35
S21-40-S-A1-INFSwivel4" Diameter x 1-1/4" Tread WidthInfinitiAnnular / Delrin3/8"5-1/8"3-5/16"240 lbs. $8.48
S21-40-S-A1-SSSwivel4" Diameter x 1-1/4" Tread WidthSteelPlain3/8"5-1/8"3-5/16"300 lbs. $11.98
S21-50-S-A1-SRSwivel5" Diameter x 1-1/4" Tread WidthSoft RubberNylon3/8"6-7/32"3-31/32"175 lbs. $7.92
S21-50-S-A1-SBBSwivel5" Diameter x 1-1/4" Tread WidthSoft RubberBall3/8"6-7/32"3-31/32"175 lbs. $8.08
S21-50-S-A1-HRSwivel5" Diameter x 1-1/4" Tread WidthHard RubberNylon3/8"6-7/32"3-31/32"275 lbs. $7.92
S21-50-S-A1-HBBSwivel5" Diameter x 1-1/4" Tread WidthHard RubberBall3/8"6-7/32"3-31/32"300 lbs. $9.09
S21-50-S-A1-LPSwivel5" Diameter x 1-1/4" Tread WidthLight Duty PlasticPlain3/8"6-7/32"3-31/32"230 lbs. $5.92
S21-50-S-A1-HPSwivel5" Diameter x 1-1/4" Tread WidthHeavy Duty PlasticPlain3/8"6-7/32"3-31/32"320 lbs. $6.71
S21-50-S-A1-PBSwivel5" Diameter x 1-1/4" Tread WidthPolyurethaneBall / Delrin3/8"6-7/32"3-31/32"240 lbs. $8.14
S21-50-S-A1-INFSwivel5" Diameter x 1-1/4" Tread WidthInfinitiAnnular / Delrin3/8"6-7/32"3-31/32"240 lbs. $9.53
S21-50-S-A1-RASwivel5" Diameter x 1-1/4" Tread WidthGray Rubber on AluminumAnnular3/8"6-7/32"3-31/32"265 lbs. $12.56
S21-30-R-A1-SRRigid3" Diameter x 1-1/4" Tread WidthSoft RubberNylon3/8"4-1/4"2-3/4"125 lbs. $3.94
S21-30-R-A1-SBBRigid3" Diameter x 1-1/4" Tread WidthSoft RubberBall3/8"4-1/4"2-3/4"125 lbs. $5.37
S21-30-R-A1-HRRigid3" Diameter x 1-1/4" Tread WidthHard RubberNylon3/8"4-1/4"2-3/4"220 lbs. $3.94
S21-30-R-A1-HBBRigid3" Diameter x 1-1/4" Tread WidthHard RubberBall3/8"4-1/4"2-3/4"220 lbs. $5.37
S21-30-R-A1-LPRigid3" Diameter x 1-1/4" Tread WidthLight Duty PlasticPlain3/8"4-1/4"2-3/4"220 lbs. $3.18
S21-30-R-A1-HPRigid3" Diameter x 1-1/4" Tread WidthHeavy Duty PlasticPlain3/8"4-1/4"2-3/4"300 lbs. $3.51
S21-30-R-A1-PURigid3" Diameter x 1-1/4" Tread WidthPolyurethanePlain3/8"4-1/4"2-3/4"220 lbs. $5.27
S21-30-R-A1-PBRigid3" Diameter x 1-1/4" Tread WidthPolyurethaneBall / Delrin3/8"4-1/4"2-3/4"220 lbs. $6.57
S21-30-R-A1-INFRigid3" Diameter x 1-1/4" Tread WidthInfinitiAnnular / Delrin3/8"4-1/4"2-3/4"155 lbs. $5.80
S21-30-R-A1-SSRigid3" Diameter x 1-1/4" Tread WidthSteelPlain3/8"4-1/4"2-3/4"2250 lbs. $5.21
S21-35-R-A1-SRRigid3 1/2" Diameter x 1-1/4" Tread WidthSoft RubberNylon3/8"4-11/16"3-1/16"130 lbs. $6.06
S21-35-R-A1-HRRigid3 1/2" Diameter x 1-1/4" Tread WidthHard RubberBall3/8"4-11/16"3-1/16"225 lbs. $6.06
S21-35-R-A1-HPRigid3 1/2" Diameter x 1-1/4" Tread WidthHeavy Duty PlasticPlain3/8"4-11/16"3-1/16"300 lbs. $6.63
S21-35-R-A1-PBRigid3 1/2" Diameter x 1-1/4" Tread WidthPolyurethaneBall / Delrin3/8"4-11/16"3-1/16"260 lbs. $7.07
S21-35-R-A1-INFRigid3 1/2" Diameter x 1-1/4" Tread WidthInfinitiAnnular / Delrin3/8"4-11/16"3-1/16"220 lbs. $6.32
S21-35-R-A1-RARigid3 1/2" Diameter x 1-1/4" Tread WidthGray Rubber on AluminumAnnular3/8"4-11/16"3-1/16"225 lbs. $6.36
S21-40-R-A1-SRRigid4" Diameter x 1-1/4" Tread WidthSoft RubberNylon3/8"5-1/8"3-5/16"165 lbs. $5.15
S21-40-R-A1-SBBRigid4" Diameter x 1-1/4" Tread WidthSoft RubberBall3/8"5-1/8"3-5/16"165 lbs. $6.48
S21-40-R-A1-HRRigid4" Diameter x 1-1/4" Tread WidthHard RubberNylon3/8"5-1/8"3-5/16"265 lbs. $5.15
S21-40-R-A1-HBBRigid4" Diameter x 1-1/4" Tread WidthHard RubberBall3/8"5-1/8"3-5/16"265 lbs. $6.48
S21-40-R-A1-LPRigid4" Diameter x 1-1/4" Tread WidthLight Duty PlasticPlain3/8"5-1/8"3-5/16"225 lbs. $3.72
S21-40-R-A1-HPRigid4" Diameter x 1-1/4" Tread WidthHeavy Duty PlasticPlain3/8"5-1/8"3-5/16"300 lbs. $4.69
S21-40-R-A1-PBRigid4" Diameter x 1-1/4" Tread WidthPolyurethaneBall / Delrin3/8"5-1/8"3-5/16"275 lbs. $7.66
S21-40-R-A1-RARigid4" Diameter x 1-1/4" Tread WidthGray Rubber on AluminumAnnular3/8"5-1/8"3-5/16"265 lbs. $8.67
S21-40-R-A1-INFRigid4" Diameter x 1-1/4" Tread WidthInfinitiAnnular / Delrin3/8"5-1/8"3-5/16"240 lbs. $6.06
S21-40-R-A1-SSRigid4" Diameter x 1-1/4" Tread WidthSteelPlain3/8"5-1/8"3-5/16"300 lbs. $10.65
S21-50-R-A1-SRRigid5" Diameter x 1-1/4" Tread WidthSoft RubberNylon3/8"6-7/32"3-31/32"175 lbs. $6.38
S21-50-R-A1-SBBRigid5" Diameter x 1-1/4" Tread WidthSoft RubberBall3/8"6-7/32"3-31/32"175 lbs. $7.58
S21-50-R-A1-HRRigid5" Diameter x 1-1/4" Tread WidthHard RubberNylon3/8"6-7/32"3-31/32"275 lbs. $6.38
S21-50-R-A1-HBBRigid5" Diameter x 1-1/4" Tread WidthHard RubberBall3/8"6-7/32"3-31/32"300 lbs. $7.58
S21-50-R-A1-LPRigid5" Diameter x 1-1/4" Tread WidthLight Duty PlasticPlain3/8"6-7/32"3-31/32"230 lbs. $4.40
S21-50-R-A1-HPRigid5" Diameter x 1-1/4" Tread WidthHeavy Duty PlasticPlain3/8"6-7/32"3-31/32"320 lbs. $5.19
S21-50-R-A1-PBRigid5" Diameter x 1-1/4" Tread WidthPolyurethaneBall / Delrin3/8"6-7/32"3-31/32"240 lbs. $6.61
S21-50-R-A1-INFRigid5" Diameter x 1-1/4" Tread WidthInfinitiAnnular / Delrin3/8"6-7/32"3-31/32"240 lbs. $8.00
S21-50-R-A1-RARigid5" Diameter x 1-1/4" Tread WidthGray Rubber on AluminumAnnular3/8"6-7/32"3-31/32"265 lbs. $11.03
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