Features

• These Service Caster series #20 expanding stem polyurethane casters offer various wheel sizes and mounting heights: 3” wheel: 4-1/8” mounting height; 3-1/2” wheel: 4-5/8” mounting height; 4” wheel: 5-1/8” mounting height; 5” wheel: 6-1/8” mounting height. Wheels are offered in three different colors – gray, blue, and red.
• Weight capacity: 3" and 3. 5": 300 lbs capacity/caster; 4", 5", and 6": 350 lbs capacity/caster
• All casters feature an expanding stem that is 2-11/16” in length. The expanding stem comes in 10 different diameters: (3/4”, 7/8”, 1”, 1-1/8”, 1-1/4”, 1-3/8”, 1-1/2”, 1-5/8”, 1-3/4”, and 1-7/8”). Before ordering, Service Caster recommends measuring the inside diameter of your tubing- this measurement will determine the corresponding expanding stem diameter needed. Not sure how to measure or don't see the size you need? call us or send us a message.
• Brake options include a top lock brake (tlb) or a total lock brake (ttl). The top lock brake (tlb), which is featured on 3", 3-1/2", 4", and 5" wheel sizes, places a positive locking force against the wheel tread locking the wheel only. The total lock brake (ttl), which is featured on all wheel sizes, also places a positive locking force against the wheel tread, but the total lock brake (ttl) simultaneously locks the wheel and the swivel for a complete stationary position.
• Wheel hardness: 60 shore d durometer