The RM-Clean series is the RollMaster hygienic line: the bracket, raceway, axle and fittings are built in stainless steel — SS304 as standard, SS316 for chloride-heavy environments — so no fastener in the load path rusts, seizes or sheds particles into a washdown or cleanroom process.
The wheel is chosen for the environment, because stainless protects the bracket, not the polymer: food-grade PU, high-temperature nylon and phenolic treads all stay open within the series. Salt spray testing runs in house, and material certificates and batch test records are available on request.
Typical RM-Clean duty: food processing lines, cold storage, pharmaceutical cleanrooms, medical equipment and marine-adjacent environments — anywhere cleaning chemicals, steam or salt air would outlast a zinc-plated caster within a season of washdowns.
Process Overview
A stainless steel caster is defined by what does not fail in a washdown: bracket, raceway, axle and fittings all stainless, so no fastener in the load path rusts, seizes or sheds particles. The RM-Clean series is built SS304 as standard, SS316 for chloride-heavy environments.
Stainless protects the bracket, not the polymer: the wheel - food-grade PU, high-temperature nylon or phenolic - is chosen for the environment it touches, and the grade is confirmed against the actual cleaning regime at quotation.
Casters by Load Range
| Series | Load per caster | Typical wheel options | Best for |
|---|---|---|---|
| RM-Light | up to 150 kg | Nylon, rubber, elastic | Light trolleys, medical and display carts |
| RM-Medium | 150–500 kg | Polyurethane, nylon | Warehouse carts, racks, AGV/AMR platforms |
| RM-Heavy | 500–1500 kg | Polyurethane on steel, forged steel | Die carts, machinery moving, heavy trolleys |
| RM-Extreme | 1500 kg and up | Forged steel, double wheel | Steel mills, ovens, extreme-load skates |
Specifications
- SS304 standard; SS316 for chloride-heavy environments
- Stainless bracket, raceway, axle and fittings — no rusting fastener in the load path
- Salt spray tested in house (test chambers on site)
- Wheel options: food-grade PU, high-temperature nylon, phenolic
- Load classes match the equivalent steel bracket series, rated on the EN 12530 based protocol
- Material certificates and batch test records on request
- ISO 9001 certified quality management system
Typical materials
Stainless steel 304 / 316
| Wheel material | Typical hardness | Floor protection | Where it fits |
|---|---|---|---|
| Cast polyurethane (PU) | Shore A 92–95 | Very good: non-marking compounds | AGV/AMR, trolleys on painted or epoxy floors, heavy duty |
| Injected PU | Shore A 90–95 | Good | Cost-sensitive medium duty, light equipment |
| Cast nylon (PA6) | Shore D 70+ | Fair: hard tread | High load, dry indoor logistics, washdown |
| Glass-filled nylon | Shore D 75+ | Fair | Higher loads and temperatures than PA6 |
| Solid rubber | Shore A 65–75 | Good | Shock absorption, outdoor thresholds, economy |
| Super-elastic rubber | Shore A 55–65 | Excellent | Quiet running: medical, hotel, laboratory |
| Phenolic resin | — | Fair | Baking lines and ovens up to +280 °C |
| Forged steel | — | None: needs steel plate or heavy concrete | Extreme loads, heat, harsh floors |
| Stainless (wheel/bracket) | — | Good | Food, pharma, washdown, corrosive areas |
Finishes
Passivated stainless steel
| 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
Salt spray test chambers on site; load ratings follow the EN 12530 based testing protocol; material certificates on request
| 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 |
Surface Finish Reference
- Truck lock is zinc-plated, blue-passivated, Cr6-free.
- Guardrail systems must be smooth-surfaced.
- Connectors must have a corrosion-resistant finish.
- Stair rail systems must be smooth-surfaced.
- Surface roughness of Ra 0.8 µm or lower is specified for sealing, sliding, fatigue, or cleanliness mechanisms.
Materials We Machine
- Gray Rubber
- Nylon
- S304
- Stainless Steel
- Stainless Steel 304
- aluminum
- polyurethane
Common Applications
- Bakeries
- Factory
- Food or Cleanroom Applications
- Heavy-Duty Applications
- High-Temperature Industrial Ovens
- Laboratories
- Labs
- Outdoor Environments
- Sanitary Applications
- Sanitary Environments
- Uniform and Facility Services Operations
- Wet or Corrosive Environment
- autoclave
- food grade environment
- marine environments
- washdown
RM series comparison
| Series | Load per caster | Typical wheel materials | Temperature range |
|---|---|---|---|
| RM-Light | Up to 150 kg/caster | Polypropylene (PP), Cast nylon (PA6), TPR, Solid rubber | - |
| RM-Medium | 150–500 kg/caster | Polyurethane (PU) on steel core, Cast nylon (PA6), Steel | −20…+80 °C (std PU); −40…+120 °C (special PU) |
| RM-Heavy | 500–1500 kg/caster | Polyurethane (PU) on steel core, Cast nylon (PA6), Forged steel / pressed steel | −20…+80 °C (std PU); −40…+120 °C (special PU) |
| RM-Extreme | 1500 kg+/caster (family line specified to 2000 kg) | Forged steel | −20…+80 °C (std PU); −40…+120 °C (special PU) |
| RM-Clean (this series) | Matches equivalent steel bracket load classes (EN 12530 based protocol) | Wheel options: food-grade PU / high-temp nylon / phenolic | Freezer to washdown ranges |
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.
Frequently asked questions
When do I need SS316 instead of SS304?
SS316 resists chlorides — salt, brine and many aggressive cleaning chemicals — far better than SS304. For plain fresh-water washdown, 304 is usually enough; near salt or marine air, or where caustic sanitizers run daily, specify 316. State the cleaning regime with the RFQ and the grade is confirmed on the quotation.
Are stainless casters as strong as steel?
The RM-Clean series matches the equivalent steel bracket load classes, at a higher unit price, and load ratings follow the same EN 12530 based protocol as the rest of the line. The right comparison is against the equivalent steel series at the same load — you pay for corrosion resistance and cleanability, not for capacity.
Which wheel tread should I pick inside the RM-Clean series?
Food-grade PU suits wet food areas where floor protection and quiet rolling matter; high-temperature nylon and phenolic cover applications where the washdown meets oven or autoclave heat — if the process combines both, see the RM-Hot high-temperature series for the tread bands. State the operating temperature and the chemicals in contact, and the tread is confirmed with the quotation.
What should an RM-Clean RFQ include?
Load per caster, wheel diameter and tread, mounting style, the cleaning regime (chemicals, frequency, temperature), any food-contact or documentation requirements, and quantity. Material certificates and batch test records are quoted with the order. Standard lead time is 15-20 days (custom configurations 30-40 days). MOQ depends on tooling: standard catalog items ship in small quantities.
What is confirmed only at quotation on an RM-Clean order?
The stainless grade (SS304 or SS316), the wheel tread and the documentation set - material certificates, salt spray or batch test records - are confirmed against the stated cleaning regime and environment at quotation, not assumed from the series. State the chemicals, temperature and any food-contact requirements with the RFQ so they are part of the confirmed scope.
How do I calculate the required caster load capacity?
Total load = cart weight + payload. Divide by 3 (not 4) to stay safe on uneven floors. Add margin for speed, shock and rough floors.
What is the typical lead time?
Standard lead time 15-30 days. Samples faster than bulk orders. Confirmed at quotation.
What is the minimum order quantity?
Standard catalog items in small quantities. Custom casters depend on tooling. OEM/ODM/private label programs welcome.
What certifications do you hold?
ISO 9001 certified quality management. Load ratings based on EN 12530 testing protocols. In-house salt spray and dynamic load testing.
Can you manufacture under our brand?
OEM manufacturing, ODM design, private labelling. Custom brackets, compounds, colors and packaging. Samples then pilot then mass production.
Sources · 4
- techincastor.comManufacturer technical documentation
- castercentral.comIndustry publication
- mappcaster.comManufacturer technical documentation
- casterhq.comIndustry publication
Technical references cited for verifiability — not supplier recommendations.Browse the research library.
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Capability commitments on this page are owner-confirmed (2026-09-29).