Product Catalog
Cold Storage Casters — Specify for Temperature First, Load Second
Updated 2026-11
Cold storage casters are specified for the temperature first and the load second, because below freezing the wheel, the bearing and the grease all behave differently than they do on a warm dock. Elastomers harden and stop absorbing floor joints, transmitting shock into the rig and the frame; lubricants thicken until the bearing drags; and the capacity number on the catalog page tells you nothing about how the tread behaves at freezer temperature or how much drag the grease adds.
The published failure modes are specific: ice in the swivel raceway and a glaze on the tread are thermal-cycling symptoms, not cold symptoms — they come from moving repeatedly between a freezer and a warm staging area, condensing and refreezing each shift. That is why corrosion resistance on the rig, the kingpin and the mounting hardware deserves as much attention as the wheel. Our RM series carries an owner-declared temperature range of −20 to +80 °C on standard PU and −40 to +120 °C on special compounds; per-configuration low-temperature ratings, including the grease package, are confirmed at quotation.
Specifications
| Tenant series temperature range | −20 to +80 °C standard PU; −40 to +120 °C special compounds (owner technical spec, family scope) |
|---|---|
| Selection principle (industry reference) | Specify for temperature first, load second — below freezing the tread, bearing and grease each change behavior, and the catalog capacity number does not describe any of them |
| Thermal-cycling failure modes (industry reference) | Ice in the swivel raceway and glazed treads come from freeze/thaw cycling between cold rooms and warm docks — corrosion resistance on rig, kingpin and hardware matters as much as the wheel |
| Low-temp series bands (manufacturer reference) | Injected polyamide 6 HD + glass/natural-fiber wheels rated −40 to +150 °C; elastic rubber on composite core rated −40 to +260 °C; composite wheels excellent in freezers to −40 °C with high thermal-shock resistance (published 340 °C jump in under 60 s tolerance on the high-temp composite family) |
| Material class reference (industry) | Glass-filled nylon freezer casters withstand −40 °F to 525 °F — the freezer rating and the oven rating can sit on the same material line, read per-line |
| Sanitation (industry reference) | Refrigerated rooms are often food environments: health inspectors look for the NSF mark on food equipment including casters under mobile shelving in walk-in coolers and freezers |
| Lubrication practice (industry reference) | For ovens or freezers, use grease rated for the actual continuous temperature, not just short spikes — the lubricant, not the tread, usually limits real service |
| Lead time | 15–20 days (custom configurations 30–40 days) |
| MOQ | 200 pieces (standard catalog items ship in smaller quantities) |
| Warranty | 18 months |
The tenant temperature range is owner first-party data. Series bands, material classes and sanitation/lubrication practices are published references — each describes its own line or facility type, never a tenant rating. The low-temperature rating of your configuration, with its grease package, is stated on the quotation.
Applications & Selection
What cold does to an ordinary caster
Three published changes break warm-dock casters in a cold room. The tread hardens: an elastomer that absorbed floor joints at dock temperature stops deforming and transmits shock into the frame and load. The lubricant thickens: bearing drag rises until the wheel fights the floor, which operators feel as heavy rolling and the equipment feels as drive strain. And the environment attacks the hardware: condensation on every door crossing rusts kingpins and raceways that never saw a washdown spec.
The subtler killer is the cycle, not the cold. Equipment that crosses between a freezer and a warm staging area several times a shift accumulates ice in the swivel raceway and glaze on the tread — thermal-cycling symptoms that no static-temperature rating predicts. Published practice therefore specifies the whole assembly for the cold: wheel compound, bearing type, lubricant, rig corrosion resistance and hardware, with stainless or coated rigs where the cycling is severe.
Our supply path is own production plus outsourcing: low-temperature builds across PU, nylon and rubber compounds are deliverable, and the stainless-steel family page covers the corrosion-resistant rigs that freezer cycling usually pairs with. Where the same cart runs into a bake-off or hot box, the high-temperature family page takes over the material choice.
RFQ points to settle before you buy
State the thermal profile honestly: the coldest room, the warmest staging area, and how many crossings per shift. Also state the sanitation requirement — if the room is a food environment, NSF-listed casters are the expectation health inspectors check, and the wheel compound must survive the cleaning chemistry as well as the cold.
Ask what grease is in the bearing. Published guidance rates the tread material for the actual continuous temperature and pairs it with grease matched to the same range; a freezer-rated wheel on a warm-dock bearing is half a spec. The quotation states the wheel compound, bearing type and lubricant for your configuration as one package.
Frequently Asked Questions
Can I use standard casters in a walk-in freezer if the load is light?
Load is not the variable that decides this. Published cold-storage guidance is explicit: a lightly loaded cart in a freezer still exposes the tread, the bearing and the lubricant to temperatures they were not specified for — the elastomer hardens, the grease thickens and the hardware corrodes regardless of weight. Specify for temperature first; capacity follows.
Why do my freezer cart casters keep seizing at the swivel, not the wheel?
Thermal cycling. Ice in the swivel raceway and a glaze on the tread are published thermal-cycling symptoms, not cold symptoms — they come from repeated freeze/thaw crossings between the cold room and warm docks. The fixes are a grease and fitment rated for the cycling range and a rig material that resists the condensation rust that precedes the ice.
What temperature rating do cold storage casters need?
The rating follows the room and the cycle, and published series give the frame: polyamide and elastic-rubber wheel lines carry −40 °C ratings, with the tenant special-compound band running −40 to +120 °C. Anything below that, or with aggressive freeze/thaw cycling, is engineered per application — the quotation states the rating with the grease package included.
Ordering & Documentation
Documents
Every order ships with a packing list and commercial invoice. The wheel compound, bearing type, lubricant class and any NSF listing status for the batch are stated on the quotation; dimensional drawings are available on request for shelving and cart fabricators.
Quotation
A quotation needs: the thermal profile (coldest room, warmest crossing, cycles per shift), load per caster, sanitation requirement, floor type, and quantity. The confirmed quotation states the temperature rating with the lubricant package — published series bands are references, the quotation is the commitment.
Sample & supply
Standard builds are produced to order with an MOQ of 200 pieces; smaller trial quantities of catalog items can ship in some sizes — ask with your RFQ. Lead time is 15-20 days standard, 30-40 days for custom compounds or stainless builds. The usual validation: run sample casters through several real freeze/warm crossings and check the raceway for ice and the tread for glaze before the batch order.
Storage & shipping
Cold storage casters ship with their specified grease installed; store indoors at ambient temperature so the lubricant stays distributed. Before installation, spin each wheel and sweep each swivel by hand — a caster that already drags at room temperature will seize early in the cold.