RollMaster heavy duty casters cover the RM-Medium (150–500 kg), RM-Heavy (500–1500 kg) and RM-Extreme (1500 kg+) series, with wheel diameters from 100 mm to 300 mm. Every bracket is welded and load-tested on dynamic testing rigs before assembly.
Typical applications: machinery moving skates, die carts, heavy trolleys, warehouse platforms and equipment that must roll every working day without maintenance windows.
Process Overview
A heavy duty caster is a wheel in a load-bearing bracket, engineered to move equipment that is too heavy to lift repeatedly. Load capacity, bracket construction (welded vs riveted), bearing type and wheel diameter decide whether a 1000 kg cart rolls smoothly for years or fails in a month.
Correct sizing is the first engineering decision: divide the total weight by three — not four — because on an uneven floor only three casters touch the ground at once, and each must carry the full share.
Specifications
- Load capacity 500–2000 kg per caster (count 3 of 4 casters at full load for uneven-floor safety)
- Welded heavy-gauge steel brackets, zinc or powder-coated finish
- Precision ball or roller bearings, lubrication fittings as standard
- Dynamic load testing on every production batch
Finishes
Zinc plating, chrome plating, powder coating
| Bracket finish | What it does | Specify it when |
|---|---|---|
| Zinc plating (blue/white) | Baseline corrosion protection | Standard dry indoor use |
| Chrome plating | Hard, decorative, easy to clean | Visible / cleanroom-adjacent equipment |
| Powder coating | Custom color, good corrosion resistance | Brand colors, outdoor-adjacent use |
| Stainless steel 304 | No plating to fail | Washdown, food, medical |
| Stainless steel 316 | Resists chlorides | Salt, brine, marine air, harsh cleaning chemicals |
Testing
Wheel concentricity and bracket alignment per internal QC standard; load ratings based on EN 12530 testing protocols
| Selection factor | Rule of thumb | Effect on performance |
|---|---|---|
| Load sizing | Total load ÷ 3 (not ÷ 4) | On uneven floors only three wheels carry the cart |
| Wheel diameter | Bigger rolls easier | Larger wheels cut push force and bridge gaps |
| Tread hardness | Softer = quieter, harder = easier rolling | Pick the softest tread that carries the load |
| Bearing choice | Precision ball for manual pushing, roller for heavy loads | Bearings dominate rolling resistance at high load |
| Swivel vs rigid | 2 swivel + 2 rigid is the standard cart setup | All-swivel carts wander; all-rigid carts cannot steer |
| Floor condition | Rough floors need bigger wheels and softer treads | Small hard wheels on bad floors destroy both |
Ordering, Lead Times & MOQ
Standard catalog items in small quantities; custom MOQ depends on tooling.
Standard lead time 15-30 days; samples faster.
Business models: OEM manufacturing, ODM design, private labelling, standard catalog sales, replacement parts supply.
Related products
Related Knowledge
Capability commitments on this page are owner-confirmed (2026-09-29).