4 Inch KP V-Groove Semi Steel Swivel Caster Set with Ball Bearings and Brakes

These Service Caster Series #KP30 V Groove Semi Steel casters offer various wheel sizes and mounting heights: 4” Wheel: 5-5/8” mounting height; 5” wheel: 6-1/2” mounting height; 6” wheel: 7-1/2” mounting height; 8" wheel: 9-1/2" mounting height. Weight Capacity: 4": 800 lbs Capacity/Caster, 5": 1,100 lbs Capacity/Caster, 6": 1,200 lbs. Capacity/Caster, and 8": 1,250 lbs Capacity/Caster Top plate measures at 4" x 4-1/2" with a bolt hole pattern of 2-5/8" x 3-5/8" to 3" x 3" and can either be bolted or welded on. Brake options include a side lock brake (SLB) which applies a positive locking force against the wheel hub which prevents the wheel from moving freely, or a bolt-on swivel lock (BSL) that when inserted into one of 4 notches found on the swivel raceway converts a swivel caster to rigid for straight-line tracking at any 90 degree angle. Combining both brake types ensures complete immobility over both swivel and wheel on the caster.You may also like 3.5 Inch Thermo Rubber Wheel Swivel 7/16 Inch Grip Ring Stem Caster Set 2 Brake.