6 inch heavy duty PU rigid caster.
The highest-volume shape in material handling: a 150 x 50 mm PU-on-cast-iron wheel in a rigid fork, specified for the carts and platform trucks that move warehouses.
Most 6 inch casters sold in the world look like this one, which is exactly why specification discipline matters here: the photograph is a commodity, the fork thickness, bearing and tread hardness are not. This rigid model is built to pair with the 6 inch swivel on one plate standard, and its quotation states the structural numbers a buyer needs to compare offers honestly.
Rigid casters earn their keep on tracking and on abuse tolerance — they are the casters that get kicked, dragged sideways and run over dock plates. Fork leg thickness and axle specification are therefore headline items on this model's quotation, not fine print.
Specification
| Wheel diameter | 6 in (150 mm) |
|---|---|
| Wheel width | 2 in (50 mm) |
| Wheel | Polyurethane tread on cast iron core |
| Configuration | Rigid (fixed direction) |
| Load capacity | Confirmed per configuration on the quotation; verified by sample load test |
| Mounting | Top plate — same plate standard as the swivel companion |
| Bearing | 6203 ball bearing |
| Fork finish | Zinc-plated (galvanized) steel |
| MOQ | Confirmed per order in the written quotation |
| Lead time | Confirmed per order in the written quotation |
Values marked as a class or target are the specification this model is quoted and sampled against. Final confirmed values are stated on the written quotation and verified on the production sample before bulk production.
Configuration options
- Matched swivel and braked-swivel companions on the same plate.
- Bearing alternatives (roller bearing for maximum capacity).
- Private label packaging under the OEM programme.
What the sample verifies
Before bulk production, the production sample of this model is checked against the locked specification: wheel diameter and — critically — wheel width measured, tread hardness verified, bearing type confirmed, fork and plate thickness measured, and load performance tested per the stated convention (EN 12532 / ANSI ICWM). The approved sample becomes the reference for the shipment, and the order carries batch traceability back to it.
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About this model
Why is this the volume configuration?
Platform trucks and warehouse carts standardised on 150 x 50 mm PU because it balances rolling effort, capacity and floor protection. Volume follows the installed base.
What fails first on cheap versions of this caster?
Fork bending under side load and tread delamination from under-specified bonding and hardness. Both are specification items on our quotation and sample checks.
Can I order rigids and swivels in one shipment?
Yes — mixed configurations and mixed lines in one container are the normal importer pattern.
Need this caster under your own brand?
Private label, custom packaging and carton marks are available across the range — mention it in the RFQ and the quotation will include the branding steps.