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What is the difference between a caster and a wheel?

Though many people assume that casters and wheels are the same, they are actually quite different. A caster is made up of various components, including a wheel. A wheel is simply a round object that rolls and it rotates on an axle or shaft that passes through the center of the wheel. When a wheel is installed into a frame it becomes a caster. The frame is called a caster bracket, rig, or fork. There are rigid and swivel frames, therefore when a wheel is installed into one of these frames they become a rigid caster or swivel caster, respectively. The frame is then attached to the base of a peice of furniture or object; e.g. office chairs, shopping carts, etc.


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Polyolefin wheel for 1 or 2 series casters
Polyolefin wheel for 1 or 2 series casters
Polyolefin (for 1 or 2 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
3 7/8 125 Derlin 1.00003.53
3 1/2 1 1/4 230 Derlin 2.00003.53
3 1/2 1 1/4 230 Ball 2.00003.55
4 7/8 135 Derlin 1.00004.53
4 1 1/4 275 Derlin 2.00004.53
4 1 1/4 275 Ball 2.00004.55
5 7/8 145 Derlin 1.00005.53
5 1 1/4 300 Derlin 2.00005.53
5 1 1/4 300 Ball 2.00005.55

Moldon Rubber wheel for 4 to 6 series casters
Moldon Rubber wheel for 4 to 6 series casters
Moldon Rubber (for 4 to 6 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
6 2 450 Roller 5.00006.649.7
6 2 1/2 540 Roller 6.00006.669
6 2 1/2 540 Roller 7.00006.669
6 3 680 Roller 7.00006.679
8 2 500 Roller 5.00008.649.7
8 2 1/2 670 Roller 6.00008.669
8 2 1/2 670 Roller 7.00008.669
8 3 840 Roller 7.00008.679

Polyolefin wheel for 3 to 6 series casters
Polyolefin wheel for 3 to 6 series casters
Polyolefin (for 3 to 6 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
5 1 1/2 450 Plain 3.00005.802
5 1 1/2 450 Roller 3.00005.809
5 1 1/2 450 Plain 4.00005.812
5 1 1/2 450 Roller 4.00005.819
5 2 650 Plain 5.00005.832
5 2 650 Roller 5.00005.839
6 1 1/2 500 Plain 3.00006.802
6 1 1/2 500 Roller 3.00006.809
6 1 1/2 500 Plain 4.00006.812
6 1 1/2 500 Roller 4.00006.819
6 2 700 Plain 5.00006.832
6 2 700 Roller 5.00006.839
8 1 1/2 600 Plain 4.00008.812
8 1 1/2 600 Roller 4.00008.819
8 2 900 Plain 5.00008.832
8 2 900 Roller 5.00008.839

Steel Wheels for 4 to 7 series casters
Steel Wheels for 4 to 7 series casters
Steel Wheels (for 4 to 7 series casters)
Semi Steel: High Grade Cast Iron
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
5 2 1000 Roller 5.00005.139
5 1/2 2000 Roller 7.00005.169
6 2 1500 Roller 5.00006.139
6 2 1/2 2500 Roller 7.00006.169
8 2 1500 Roller 5.00008.139
8 3 2500 Roller 7.00008.169
Forged Steel: Droped Forged Heavy Duty Steel
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
6 2 1700 Roller 5.00006.239
6 2 1/2 4000 Roller 7.00006.269
8 3 4500 Roller 7.00008.279

Phenolic wheel for 3 to 7 series casters
Phenolic wheel for 3 to 7 series casters
Phenolic (for 3 to 7 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
5 1 1/2 600 Ball 3.00005.305
5 1 1/2 600 Roller 3.00005.309
5 1 1/2
600 Ball 4.00005.315
5 1 1/2 600 Roller 4.00005.319
5 2 1000 Ball 5.00005.339
6 1 1/2 800 Ball 3.00006.305
6 1 1/2 800 Roller 3.00006.309
6 1 1/2 800 Ball 4.00006.315
6 1 1/2 800 Roller 4.00006.319
6 2 1200 Roller 5.00006.339
6 2 1/2 1600 Roller 6.00006.369
6 2 1/2 1600 Roller 7.00006.369
8 2 1400 Roller 5.00008.369
8 2 1/2 1600 Roller 6.00008.369
8 2 1/2 2000 Roller 7.00008.369

V-Groove wheel for 4 to 7 series casters
V-Groove wheel for 4 to 7 series casters
V-Groove (for 4 to 7 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
6 2 1200 Roller 5.00006.739
6 2 1200 Derlin 5.00006.731
6 2 1/2 2500 Roller 7.00006.769
6 2 1/2 2500 Derlin 7.00006.761
8 3 2500 Roller 7.00008.779
8 3 2500 Derlin 7.00008.771

Performa wheel for 1 & 2 series casters
Performa wheel for 1 & 2 series casters
Performa (for 1 & 2 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
3 7/8 125 Derlin 1.00003.441
3 1/2  1 1/4 250 Derlin 2.00003.441
3 1/2 1 1/4 250 Ball 2.00003.445
3 1/2 1 5/16 210 Derlin 2.00003.561
3 1/2 1 5/16 210 Ball 2.00003.565
4 7/8 135 Derlin 1.00004.441
4 1 1/4 300 Derlin 2.00004.441
4 1 1/4 300 Ball 2.00004.445
5 7/8 145 Derlin 1.00005.441
5 1 1/4 325 Derlin 2.00005.441
5 1 1/4 325 Ball 2.00005.445
5 1 5/16 250 Derlin 2.00005.561
5 1 5/16 250 Ball 2.00005.565

HI-TECH Polyurethane wheel for 1 & 2 series casters
HI-TECH Polyurethane for 1 & 2 series casters
HI-TECH Polyurethane (for 1 & 2 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
3 7/8 100 Derlin 1.00003.91
3 1/2  1 1/4 250 Derlin 2.00003.91
3 1/2  1/14 250 Ball 2.00003.95
4 7/8 125 Derlin 1.00004.91
5 1 1/4 300 Derlin 2.00005.91
5 1 1/4 300 Ball 2.00005.95

Performa wheel for 4 to 6 series casters
Performa wheel for 4 to 6 series casters
Performa (for 4 to 6 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
5 2 375 Derlin 5.00005.451.2
5 2 375 Roller 5.00005.459.2
5 2 375 Ball 5.00005.465.2
6 2 500 Ball 5.00006.465.2
6 2 600 Derlin 5.00006.451.2
6 2 600 Roller 5.00006.459.2
8 2 500 Ball 5.00008.465.2
8 2 675 Derlin 5.00008.451.2
8 2 675 Roller 5.00008.459.2

HI-TECH Polyurethane wheel for 3 to 6 series casters
HI-TECH Polyurethane wheel for 3 to 6 series casters
HI-TECH Polyurethane (for 3 to 6 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
5 1 1/2 500 Roller 3.00005.909
5 1 1/2 500 Roller 4.00005.919
5 2 750 Roller 5.00005.929
6 1 1/2 600 Roller 3.00006.909
6 1 1/2 600 Roller 4.00006.919
6 2 900 Roller 5.00006.929
8 1 1/2 800 Roller 4.00008.919
8 2 1000 Roller 5.00008.929

Performa Rubber wheel for 4 to 6 series casters
Performa Rubber wheel for 4 to 6 series casters
Performa Rubber (for 4 to 6 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
6 2 450 Derlin 5.00006.551
6 2 450 Roller 5.00006.559
6 2 450 Ball 5.00006.565
8 2 500 Ball 5.00008.565
8 2 600 Derlin 5.00008.551
8 2 600 Roller 5.00008.559

Endura wheel for 4 to 6 series casters
Endura wheel for 4 to 6 series casters
Endura (for 4 to 6 series casters)
Wheel Diameter Tread Width Capacity Per Caster Bearing Model #
4 2 1000 Derlin 5.00004.831.EN
4 2 1000 Roller 5.00004.839.EN
4 2 1000 Ball 5.00004.835.EN
5 2 1000 Derlin 5.00005.831.EN
5 2 1000 Roller 5.00005.839.EN
5 2 1000 Ball 5.00005.835.EN
6 2 1100 Derlin 5.00006.831.EN
6 2 1100 Roller 5.00006.839.EN
6 2 1100 Ball 5.00006.835.EN
8 2 1200 Derlin 5.00008.831.EN
8 2 1200 Roller 5.00008.839.EN
8 2 1200 Ball 5.00008.835.EN
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