4" x 2" Solid Polyurethane Wheel Swivel Caster with Total Locking Brake - 750 Lbs Capacity

4" x 2" Solid Polyurethane Wheel Swivel Caster with Total Locking Brake - Part #: 146SPU420SBTL Solid Polyurethane wheels have the advantage of a one piece design which eliminates tread de-bonding failures you see on polyurethane wheels with iron or polyolefin cores while still providing high capacities & excellent durability. They are 100% washable & steam cleanable; they will not be effected by grease, oils, most chemicals, cleaning solutions, blood or brine. These wheels offer more floor protection, non-marking treads, quieter rolling, & smoother rides compared to steel or phenolic wheels while still providing comparable load capacities.These wheels will be slightly higher in price compared to the polyurethane on polyolefin wheels but you will not have to worry about the tread de-bonding which gives you a longer life span * Total locking brake casters work best with softer wheels like neoprene, soft rubber, thermoplastic rubber & polyurethane. The softer wheel allows the brake pad to grip the tread effectively. While total locking brakes also work with harder wheels, a strong push may cause slight movement of the caster wheel.   Specifications: Load Capacity (lbs.): 750 Link to Matching Rigid Brake Caster: 146SPU420RB Wheel Diameter: 4" Caster Rig Material Type: Laser Cut AISI 1045 Steel Tread Width: 2" Caster Rig Color/Finish: Bright Zinc Plated Wheel Type: Solid Polyurethane Swivel or Rigid Caster: Swivel Wheel Bearing Type: See Bearing Options Swivel Radius:  7-11/16" Overall Height: 5-5/8" Swivel Construction:  Kingpinless - Heat Treated Precision Machined Raceway Temp Range: -50°F to 180°F Mounting Plate: 4" x 4-1/2" Wheel Durometer: Shore D 60 (+/-5) Bolt Hole Pattern: 2-5/8" x 3-5/8" slotted to 3" x 3" Wheel Color: Blue Mounting Bolt Size: 3/8" or Smaller Link to Replacement Wheel: LSPU420 Weight: 5.06 lbs.