- Swivel load bearing – this unique design forged swivel section with 3/8" dia. carbon steel balls in a 2 3/8" dia. raceway accommodates both thrust and load forces because of its kingpinless design; the swivel raceway is precision machined and induction hardened
- Finish – Bright zinc plating
- Top plate and fork base are hot forged steel that has been induction hardened to ensure uniform depth of hardness in the swivel races
- Fork legs are 1/4" thick, 2" wide formed steel, with inside and outside welds for extra strength
- Wheel axle – 1/2" dia. axle, with lock nut
- Fork leg spacing - 2 1/2" width
- Sealing cap welded to outer race assures protection from foreign material and keeps grease in the race area
- Capacity up to 750-3,000 lbs.
| TOP PLATE SIZE AND BOLT HOLE SPECIFICATIONS | ||
|---|---|---|
| Top Plate Size | Bolt Hole Centers | Attaching Bolt Size |
| 4" x 4 1/2" | 2 5/8" x 3 5/8" Slotted to 3" x 3" | 3/8" |
Series 90-91 casters are made from forged steel. Top plate and inner raceway are forged from one piece, providing a superior raceway construction for shock conditions. This forged design outperforms the standard steel plate welded to tubular steel inner races, especially in abusive and impact-loading conditions
Fasteners For Series 12
| Diameter | Tread Width | Type | Bearing | Capacity (Pounds) | Load Height (Inches) | Swivel Radius (Inches) | Swivel | Rigid |
|---|---|---|---|---|---|---|---|---|
| 4" | 2" | Rubber/Cast Iron | Roller | 400 | 5 5/8 | 3 3/16 | 490-RCR | 491-RCR |
| 4" | 2" | Cast Iron | Roller | 800 | 5 5/8 | 3 3/16 | 490-CIR | 491-CIR |
| 4" | 2" | Mold-on Poly/Cast Iron | Roller | 800 | 5 5/8 | 3 3/16 | 490-PCR | 491-PCR |
| 4" | 2" | Phenolic | Roller | 800 | 5 5/8 | 3 3/16 | 490-PHR | 491-PHR |
| 4" | 2" | Gray Rubber | Roller | 350 | 5 5/8 | 3 3/16 | 490-GRR | 491-GRR |
| 4" | 2" | Heavy Duty Plastic | Roller | 500 | 5 5/8 | 3 3/16 | 490-HPR | 491-HPR |
| 4" | 2" | Solid Polyurethane | Roller | 1000 | 5 5/8 | 3 3/16 | 490-SPR | 491-SPR |
| 5" | 2" | Rubber/Cast Iron | Roller | 450 | 6 1/2 | 3 7/8 | 590-RCR | 591-RCR |
| 5" | 2" | Cast Iron | Roller | 1000 | 6 1/2 | 3 7/8 | 590-CIR | 591-CIR |
| 5" | 2" | Mold-on Poly/Cast Iron | Roller | 1000 | 6 1/2 | 3 7/8 | 590-PCR | 591-PCR |
| 5" | 2" | Phenolic | Roller | 1000 | 6 1/2 | 3 7/8 | 590-PHR | 591-PHR |
| 5" | 2" | Gray Rubber | Roller | 400 | 6 1/2 | 3 7/8 | 590-GRR | 591-GRR |
| 5" | 2" | Heavy Duty Plastic | Roller | 650 | 6 1/2 | 3 7/8 | 590-HPR | 591-HPR |
| 5" | 2" | Solid Polyurethane | Roller | 1000 | 6 1/2 | 3 7/8 | 590-SPR | 591-SPR |
| 6" | 2" | Rubber/Cast Iron | Roller | 550 | 7 1/2 | 4 9/16 | 690-RCR | 691-RCR |
| 6" | 2" | Cast Iron | Roller | 1200 | 7 1/2 | 4 9/16 | 690-CIR | 691-CIR |
| 6" | 2" | Mold-on Poly/Cast Iron | Roller | 1200 | 7 1/2 | 4 9/16 | 690-PCR | 691-PCR |
| 6" | 2" | Phenolic | Roller | 1200 | 7 1/2 | 4 9/16 | 690-PHR | 691-PHR |
| 6" | 2" | Gray Rubber | Roller | 500 | 7 1/2 | 4 9/16 | 690-GRR | 691-GRR |
| 6" | 2" | Heavy Duty Plastic | Roller | 700 | 7 1/2 | 4 9/16 | 690-HPR | 691-HPR |
| 6" | 2" | Solid Polyurethane | Roller | 1200 | 7 1/2 | 4 9/16 | 690-SPR | 691-SPR |
| 8" | 2" | Rubber/Cast Iron | Roller | 600 | 9 1/2 | 6 | 890-RCR | 891-RCR |
| 8" | 2" | Cast Iron | Roller | 1400 | 9 1/2 | 6 | 890-CIR | 891-CIR |
| 8" | 2" | Mold-on Poly/Cast Iron | Roller | 1200 | 9 1/2 | 6 | 890-PCR | 891-PCR |
| 8" | 2" | Phenolic | Roller | 1400 | 9 1/2 | 6 | 890-PHR | 891-PHR |
| 8" | 2" | Gray Rubber | Roller | 600 | 9 1/2 | 6 | 890-GRR | 891-GRR |
| 8" | 2" | Heavy Duty Plastic | Roller | 850 | 9 1/2 | 6 | 890-HPR | 891-HPR |
| 8" | 2" | Solid Polyurethane | Roller | 1200 | 9 1/2 | 6 | 890-SPR | 891-SPR |