4" x 2" Ductile Steel Wheel Kingpinless Rigid Brake Caster - 1,500 Lbs Capacity caster-type-forged-steel Link to Matching Rigid Caster:

Link to Matching Rigid Caster: P5004200VG2 Wheel Diameter: 4" Caster Rig Material Type:  Rockwell 80B Tread Width: 1-3/4" Caster Rig Color/Finish: Chrome Wheel Type: Solid Steel V-Groove Swivel or Rigid Caster: Swivel Wheel Bearing Type: Ball Bearing Swivel Radius: 3-3/16" Overall Height: 5-5/8" Swivel Construction: Kingpinless - Heat Treated Precision Machined Raceway Temp Range: -45°F to 550°F  Mounting Plate: 4" x 4-1/2" Wheel Durometer: Rockwell 80B Bolt Hole Pattern: 2-5/8" x 3-5/8" slotted to 3"x 3" Wheel Color: Silver Mounting Bolt Size: 3/8" or Smaller Link to Replacement Wheel: PAH108 Weight: 8

Both a welded on option and a field installable bolt on option are available

Wheel Type: Cast Iron Wheel Durometer:Brinell 145 Overall Height:7-1/2" Swivel Radius:4-9/16"

5" x 2" Cast Iron Wheel Rigid Brake Caster - Part # 146CIRB520RB

With reduced carbon content & additional steel blended into the casting

4" x 2" Ductile Steel Wheel Kingpinless Rigid Brake Caster - 1,500 Lbs Capacity caster-type-forged-steel Link to Matching Rigid Caster:4" x 2" Ductile Steel Wheel Kingpinless Rigid Brake Caster Part # P50042DUCTTLB Manufactured from a high strength steel alloy, ductile steel offers improved capacity, durability & impact resistance compared to standard cast iron wheels. Ductile steel provides approximately 45,000 PSI tensile strength & features a thicker tread, spokes & hubs to withstand abusive industrial applications. Its moderately crowned tread design further reduces friction