Colson 6 Series Swivel IMPAK Kingpinless Top Plate Caster Specifications
2" Tread Width Models

Caster Description
Wheel Dia.
Tread Width
 Capacity Each
Wheel Description
Bearing
Roller Bearing Model
 Optional Bearings 
Load Height
Swivel Radius
Approx Weight

6 Series IMPAK Swivel Top Plate

4"

2"

300

Performa Rubber (Conductive Flat)

Roller

6.04279.459 COND

Ball

5-5/8

3-15/32

7-1/4

6 Series IMPAK Swivel Top Plate

4"

2"

350

Performa Rubber (Flat/Black)

Roller

6.04279.459.2

Delrin, Ball, Prec. Ball

5-5/8

3-15/32

7-1/4

6 Series IMPAK Swivel Top Plate

4"

2"

350

Performa Rubber (Flat/Grey)

Roller

6.04279.459

Delrin, Ball, Prec. Ball

5-5/8

3-15/32

7-1/4

6 Series IMPAK Swivel Top Plate

4"

2"

400

Moldon Rubber (Cast iron core)

Roller

6.04279.649.7

Delrin

5-5/8

3-15/32

8

6 Series IMPAK Swivel Top Plate

4"

2"

500

Polyolefin

Roller

6.04279.839

Delrin, Plain

5-5/8

3-15/32

7-1/4

6 Series IMPAK Swivel Top Plate

4"

2"

600

Polyurethane HI-TECH

Roller

6.04279.929

Delrin

5-5/8

3-15/32

7-1/2

6 Series IMPAK Swivel Top Plate

4"

2"

700

Moldon Polyurethane (Aluminum core)

Roller

6.04279.939

Delrin

5-5/8

3-15/32

7-1/2

6 Series IMPAK Swivel Top Plate

4"

2"

700

Moldon Polyurethane (Cast iron core)

Roller

6.04279.949.7

Delrin

5-5/8

3-15/32

9-1/4

6 Series IMPAK Swivel Top Plate

4"

2"

800

Maxim

Roller

6.04279.539

Delrin, Bronze

5-5/8

3-15/32

5-7/8

6 Series IMPAK Swivel Top Plate

4"

2"

800

Phenolic

Roller

6.04279.339

Delrin

5-5/8

3-15/32

7-1/4

6 Series IMPAK Swivel Top Plate

4"

2"

800

Thermo

Roller

6.04279.839 HT

Plain

5-5/8

3-15/32

8-1/4

6 Series IMPAK Swivel Top Plate

4"

2"

800

V-Groove

Roller

6.04279.739

Delrin

5-5/8

3-15/32

11

6 Series IMPAK Swivel Top Plate

4"

2"

1000

Endura Solid Elastomer

Roller

6.04279.839.EN

Delrin, Prec. Ball

5-5/8

3-15/32

7-1/4

6 Series IMPAK Swivel Top Plate

4"

2"

1000

Cast Iron

Roller

6.04279.139

Delrin

5-5/8

3-15/32

9

6 Series IMPAK Swivel Top Plate

5"

2"

325

Performa Rubber (Conductive Flat)

Roller

6.05279.459 COND

Ball

6-1/2

3-29/32

9

6 Series IMPAK Swivel Top Plate

5"

2"

375

Performa Rubber (Flat/Black)

Roller

6.05279.459.2

Delrin, Ball, Prec. Ball

6-1/2

3-29/32

9

6 Series IMPAK Swivel Top Plate

5"

2"

375

Performa Rubber (Flat/Grey)

Roller

6.05279.459

Delrin, Ball, Prec. Ball

6-1/2

3-29/32

9

6 Series IMPAK Swivel Top Plate

5"

2"

400

Moldon Rubber (Cast iron core)

Roller

6.05279.649.7

Delrin

6-1/2

3-29/32

8

6 Series IMPAK Swivel Top Plate

5"

2"

650

Polyolefin

Roller

6.05279.839

Delrin, Plain

6-1/2

3-29/32

9

6 Series IMPAK Swivel Top Plate

5"

2"

750

Polyurethane HI-TECH

Roller

6.05279.929

Delrin

6-1/2

3-29/32

8-1/2

6 Series IMPAK Swivel Top Plate

5"

2"

1000

Maxim

Roller

6.05279.539

Delrin, Bronze

6-1/2

3-29/32

6-1/4

6 Series IMPAK Swivel Top Plate

5"

2"

1000

Endura Solid Elastomer

Roller

6.05279.839.EN

Delrin, Prec. Ball

6-1/2

3-29/32

8

6 Series IMPAK Swivel Top Plate

5"

2"

1000

Moldon Polyurethane (Cast iron core)

Roller

6.05279.949.7

Delrin

6-1/2

3-29/32

11-1/4

6 Series IMPAK Swivel Top Plate

5"

2"

1000

Moldon Nylon

Roller

6.05279.939.3

Delrin

6-1/2

3-29/32

8

6 Series IMPAK Swivel Top Plate

5"

2"

1000

Phenolic

Roller

6.05279.339

Delrin

6-1/2

3-29/32

8

6 Series IMPAK Swivel Top Plate

5"

2"

1000

Thermo

Roller

6.05279.839 HT

Plain

6-1/2

3-29/32

9

6 Series IMPAK Swivel Top Plate

5"

2"

1000

Cast Iron

Roller

6.05279.139

Delrin

6-1/2

3-29/32

10-3/4

6 Series IMPAK Swivel Top Plate

5"

2"

1500

Forged Steel

Roller

6.05279.239

Delrin

6-1/2

3-29/32

11-1/4

6 Series IMPAK Swivel Top Plate

6"

2"

410

Performa Rubber (Conductive Flat)

Roller

6.06279.459 COND

Ball

7-1/2

4-11/16

7-3/4

6 Series IMPAK Swivel Top Plate

6"

2"

410

Performa Rubber (Conductive Round)

Roller

6.06279.559 COND

Ball

7-1/2

4-11/16

7-3/4

6 Series IMPAK Swivel Top Plate

6"

2"

450

Performa Rubber (Round/Grey)

Roller

6.06279.559

Delrin, Ball, Prec. Ball

7-1/2

4-11/16

7-3/4

6 Series IMPAK Swivel Top Plate

6"

2"

450

Moldon Rubber (Cast iron core)

Roller

6.06279.649.7

Delrin

7-1/2

4-11/16

14

6 Series IMPAK Swivel Top Plate

6"

2"

600

Performa Rubber (Flat/Black)

Roller

6.06279.459.2

Delrin, Ball, Prec. Ball

7-1/2

4-11/16

7-3/4

6 Series IMPAK Swivel Top Plate

6"

2"

600

Performa Rubber (Flat/Grey)

Roller

6.06279.459

Delrin, Ball, Prec. Ball

7-1/2

4-11/16

7-3/4

6 Series IMPAK Swivel Top Plate

6"

2"

700

Polyolefin

Roller

6.06279.839

Delrin, Plain

7-1/2

4-11/16

10

6 Series IMPAK Swivel Top Plate

6"

2"

900

Polyurethane HI-TECH

Roller

6.06279.929

Delrin

7-1/2

4-11/16

9

6 Series IMPAK Swivel Top Plate

6"

2"

1100

Endura Solid Elastomer

Roller

6.06279.839.EN

Delrin, Prec. Ball

7-1/2

4-11/16

9-1/4

6 Series IMPAK Swivel Top Plate

6"

2"

1200

Maxim

Roller

6.06279.539

Delrin, Bronze

7-1/2

4-11/16

6-5/8

6 Series IMPAK Swivel Top Plate

6"

2"

1200

Moldon Polyurethane (Aluminum core)

Roller

6.06279.939

Delrin

7-1/2

4-11/16

9-1/4

6 Series IMPAK Swivel Top Plate

6"

2"

1200

Moldon Polyurethane (Cast iron core)

Roller

6.06279.949.7

Delrin

7-1/2

4-11/16

12-1/2

6 Series IMPAK Swivel Top Plate

6"

2"

1200

Moldon Nylon

Roller

6.06279.939.3

Delrin

7-1/2

4-11/16

9-1/4

6 Series IMPAK Swivel Top Plate

6"

2"

1200

Phenolic

Roller

6.06279.339

Delrin

7-1/2

4-11/16

9-1/4

6 Series IMPAK Swivel Top Plate

6"

2"

1200

V-Groove

Roller

6.06279.739

Delrin

7-1/2

4-11/16

12

6 Series IMPAK Swivel Top Plate

6"

2"

1500

Cast Iron

Roller

6.06279.139

Delrin

7-1/2

4-11/16

12-1/2

6 Series IMPAK Swivel Top Plate

6"

2"

1500

Forged Steel

Roller

6.06279.239

Delrin

7-1/2

4-11/16

12-1/2

6 Series IMPAK Swivel Top Plate

8"

2"

500

Performa Rubber (Conductive Flat)

Roller

6.08279.459 COND

Ball

10-1/8

6-1/2

8-1/2

6 Series IMPAK Swivel Top Plate

8"

2"

500

Performa Rubber (Conductive Round)

Roller

6.08279.559 COND

Ball

10-1/8

6-1/2

8-1/2

6 Series IMPAK Swivel Top Plate

8"

2"

500

Moldon Rubber (Cast iron core)

Roller

6.08279.649.7

Delrin

10-1/8

6-1/2

16-1/4

6 Series IMPAK Swivel Top Plate

8"

2"

600

Performa Rubber (Round/Grey)

Roller

6.08279.559

Delrin, Ball, Prec. Ball

10-1/8

6-1/2

8-1/2

6 Series IMPAK Swivel Top Plate

8"

2"

675

Performa Rubber (Flat/Black)

Roller

6.08279.459.2

Delrin, Ball, Prec. Ball

10-1/8

6-1/2

8-1/2

6 Series IMPAK Swivel Top Plate

8"

2"

675

Performa Rubber (Flat/Grey)

Roller

6.08279.459

Delrin, Ball, Prec. Ball

10-1/8

6-1/2

8-1/2

6 Series IMPAK Swivel Top Plate

8"

2"

900

Polyolefin

Roller

6.08279.839

Delrin, Plain

10-1/8

6-1/2

10-1/4

6 Series IMPAK Swivel Top Plate

8"

2"

1000

Polyurethane HI-TECH

Roller

6.08279.929

Delrin

10-1/8

6-1/2

9-1/2

6 Series IMPAK Swivel Top Plate

8"

2"

1200

Endura Solid Elastomer

Roller

6.08279.839.EN

Delrin, Prec. Ball

10-1/8

6-1/2

11-1/2

6 Series IMPAK Swivel Top Plate

8"

2"

1400

Maxim

Roller

6.08279.539

Delrin, Bronze

10-1/8

6-1/2

7-1/2

6 Series IMPAK Swivel Top Plate

8"

2"

1400

Phenolic

Roller

6.08279.339

Delrin

10-1/8

6-1/2

11-1/2

6 Series IMPAK Swivel Top Plate

8"

2"

1500

Moldon Polyurethane (Aluminum core)

Roller

6.08279.939

Delrin

10-1/8

6-1/2

11-1/4

6 Series IMPAK Swivel Top Plate

8"

2"

1500

Moldon Polyurethane (Cast iron core)

Roller

6.08279.949.7

Delrin

10-1/8

6-1/2

16-1/4

6 Series IMPAK Swivel Top Plate

8"

2"

1500

Moldon Nylon

Roller

6.08279.939.3

Delrin

10-1/8

6-1/2

11-1/4

6 Series IMPAK Swivel Top Plate

8"

2"

1500

Cast Iron

Roller

6.08279.139

Delrin

10-1/8

6-1/2

16-1/4

Roller Bearing Options: Torrington style roller bearing with Hytrel retainer (Specify WB19). Metal cage roller bearing (Specify WB29).
Roller Bearing Washer Options: Metal thrust & retainer washers (Specify WSR1). Sintered iron step washers (Specify WSR2). Sealed metal retainer washer (Specify WSR3).
Delrin Bearing Options: For standard two-piece bearing change ninth digit to “1” (Example: 6.06279.911). One-piece with steel thrust washers (Specify WB11).
Ball Bearing Options: To order change 8th & 9th digit in model number to “65” (Example: 6.06279.465). Note: Performa 6" to 8" capacity decreases (See wheel section).
Precision Ball Bearings: To order change 8th and 9th digits to “35” (Example 6.06279.435). Performa round tread, change wheel code to “555”.
Bronze Bearing Options: To order change 9th digit in Maxim model number to “4” (Example: 6.06279.534).
Plain Bearing Options: To order change 9th digit to “2”(Example: 6.06279.832).

Click on wheels below for more information.

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