Heavy-Duty Commercial Refrigerator Castor
1. Product Overview
This series of heavy-duty castors consists of premium mobility components
engineered specifically for commercial refrigeration equipment, including
horizontal frozen island showcases, stainless steel undercounter freezers, and
mobile cold-chain displays. The wheels are molded from high-strength
polyurethane (PU) or nylon, paired with thickened, rust-resistant electroplated
steel brackets. They offer exceptional load capacity, low-temperature
resilience, and 360° flexible maneuverability. Equipped with a dual-bearing
structure, these castors ensure smooth and quiet movement even when the
refrigerator is fully loaded.
2. Key Advantages
1. Low-Temperature Resilience & Floor Protection
The wheel compound is specially formulated for low-temperature resilience,
maintaining excellent elasticity and toughness at temperatures as low as -30°C
without cracking. Furthermore, the high-elasticity polyurethane (PU) tread
leaves no tracks or marks during movement, effectively protecting kitchen tiles
or supermarket epoxy floors from wear and tear.
2. Dual-Brake & Secure Locking System
The brake-equipped models feature an integrated total-lock brake system. A
single press simultaneously locks both the wheel rotation and the bracket
swivel, ensuring the refrigerator remains rock-solid and stationary even on
sloped kitchen floors or when subjected to accidental impacts.
3. High-Standard Rust Resistance & Heavy-Duty Bearings
The steel brackets undergo multi-layer thickened zinc-plating or
electrophoresis treatments to provide long-term resistance against water
accumulation, high humidity, and chemical cleaners from frequent kitchen floor
washdowns. The precision steel ball bearings ensure smooth rotation and superior
shear resistance.
3. Technical Specifications
| Technical Indicators | Core Parameters & Standards |
| Material | Polyurethane (PU) / Nylon / Thickened Steel Bracket |
| Mounting Types | Top Plate Type / Threaded Stem Type |
| Wheel Diameter | 2 inch (50mm) / 3 inch (75mm) / 4 inch (100mm) / 5 inch (125mm) |
| Bearing Type | Precision Dual Ball Bearings |
| Rated Load Capacity | Single wheel: 80kg - 150kg; Total static load of four castors: 300kg - 500kg |
| Working Temperature | -35℃ to +60℃ (-31℉ to +140℉) |
Brake Configuration | Total Lock Brake / Free Swivel (Optional) |
4. Installation Guide
1. Verify Specifications
· Top Plate Type: Align the top plate with the pre-drilled screw holes on the
refrigerator baseline, and secure tightly with 4 high-tensile bolts and spring
washers.
· Threaded Stem Type: Align the threaded stem with the reinforced nut hole at
the corner of the freezer bottom, and tighten clockwise.
2. Configuration (Recommended): For optimal operation, it is recommended to
configure a single refrigerator with 2 total-lock brake castors (installed at
the front/accessible side) + 2 free swivel castors (installed at the rear).
3. Leveling: After installation, place the refrigerator on a level surface to
verify that all 4 wheels touch the ground simultaneously without any wobble or
gaps.
5. Safety & Maintenance
Never Exceed Load Limits & Avoid Impacts
Strictly adhere to the total weight limit of the refrigerator and castors.
When moving the unit down steps or tailgates, avoid severe drops or impacts, as
shock loads can easily deform bearings, dislodge steel balls, or crack the wheel
core.
Debris Removal & Lubrication
Kitchen and supermarket floors often have strings, hair, or plastic wrap
debris, which can easily wrap around the axle and jam the wheel. Inspect
semi-annually and clear out any entanglements. If necessary, apply a small
amount of low-temperature grease to the swivel raceway and the axle.
