Wheel
Diameter
(Inches)

Tread
Width
(Inches)

Capacity
Per
Caster
(Lbs.)

Wheel

Bearing

Model
Number

Approx.
Wt.
Each
(Lbs.)

Load
Height
(Inches)

Swivel
Radius
(Inches)

Swivel

Rigid

3

1-1/2

140

Performa Rubber (Flat)

Roller

3-317-449

3-308-449

3

4-1/2

3-1/8

300

Polyolefin

3-317-809

3-308-809

2-3/4

Polyurethane Hi-Tech

3-317-909

3-308-909

3

400

Phenolic

3-317-309

3-308-309

2-3/4

Semi-Steel

3-317-109

3-308-109

4-1/4

4

1-1/2

200

Performa Rubber (Flat)

Roller

3-417-449

3-408-449

3-1/2

5-3/8

3-5/8

300

Riveted Disc Polyurethane

3-417-349-9

3-408-349-9

375

Polyolefin

3-417-809

3-408-809

3

400

Polyurethane Hi-Tech

3-417-909

3-408-909

3-1/4

Phenolic

3-417-309

3-408-309

3-1/2

Semi-Steel

3-417-109

3-408-109

4-1/2

5

1-1/2

240

Performa Rubber (Flat)

Roller

3-517-449

3-508-449

3-1/2

6-3/8

4-1/8

400

Riveted Disc Polyurethane

3-517-349-9

3-508-349-9

4

Polyolefin

3-517-809

3-508-809

2-3/4

Polyurethane Hi-Tech

3-517-909

3-508-909

3-1/2

Phenolic

3-517-309

3-508-309

3-1/4

Semi-Steel

3-517-109

3-508-109

5

6

1-1/2

280

Performa Rubber (Flat)

Roller

3-617-449

3-608-449

3-3/4

7-3/8

4-5/8

400

Riveted Disc Polyurethane

3-617-349-9

3-608-349-9

4-3/4

Polyolefin

3-617-809

3-608-809

3

Polyurethane Hi-Tech

3-617-909

3-608-909

3-3/4

Phenolic

3-617-309

3-608-309

3-3/4

Semi-Steel

3-617-109

3-608-109

6