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3", 4" and 5" Diameter Wheel  Expanding Stem Casters
When used with the proper stem adapter, these casters will fit into multiple size hollow legs.   Very useful casters and easy to install.  Helps you put a caster in places that were not designed for casters.
Wheel Tread Wheel Load Caster Part
Diameter Width Type Capacity Type Number
(in.) (in.) - Lbs. - Swivel
3 1-1/4 TPR 210 Swivel 8GS30KP-MIR-EXP
3 1-1/4 TPR 210 Swivel/Brake 8GT30KP-MIR-EXP
3 1-1/4 HR 250 Swivel 8GS30KP-HR-EXP
3 1-1/4 HR 250 Swivel/Brake 8GT30KP-HR-EXP
3 1-1/4 PLY 250 Swivel 8GS30KP-PLY-EXP
3 1-1/4 PLY 250 Swivel/Brake 8GT30KP-PLY-EXP
4 1-1/4 TPR 225 Swivel 8GS40KP-MIR-EXP
4 1-1/4 TPR 225 Swivel/Brake 8GT40KP-MIR-EXP
4 1-1/4 HR 250 Swivel 8GS40KP-HR-EXP
4 1-1/4 HR 250 Swivel/Brake 8GT40KP-HR-EXP
4 1-1/4 PLY 250 Swivel 8GS40KP-PLY-EXP
4 1-1/4 PLY 250 Swivel/Brake 8GT40KP-PLY-EXP
5 1-1/4 TPR 225 Swivel Q525024MIR
5 1-1/4 TPR 225 Swivel/Brake Q525024MIRTLB
5 1-1/4 HR 250 Swivel Q525024HR
5 1-1/4 HR 250 Swivel/Brake Q525024HRTLB
5 1-1/4 PLY 250 Swivel Q525024PLY
5 1-1/4 PLY 250 Swivel/Brake Q525024PLYTLB

How to Install Expanding Stem Casters

  1. Squeeze element by holding bottom of stem (with a wrench, or by hand in some cases), and twisting the top nut.  This will bring the top nut down and cause the rubber element to bulge out.

  2. Check to see if caster stem will slip into hollow leg.  It should be hard to push into the leg.  If it slips in too easily, then you may need to squeeze the element again as described in step one.

  3. Once snug in place in the leg, the friction should keep the element from slipping while you tighten it a little more.  The caster should now be secure in place.