Product type: Heavy-duty sliding door roller assemblies with POK wheels
Wheel structure: POK engineering-plastic wheels with integrated ball bearings, mounted in a metal carriage with an adjustable height screw. Single-wheel, tandem and multi-wheel structures are available. Bearing and carriage materials follow the approved drawing.
These sliding door roller assemblies are designed for smooth movement, stable support and easy height adjustment. The POK wheels run on ball bearings to reduce friction, while the metal carriage fits inside a compatible bottom door profile. The adjustment screw allows the roller height to be corrected during installation.
POK is described as an engineering plastic with good wear resistance, impact strength and stable performance for frequent sliding use. Compared with metal wheels, POK wheels can reduce direct metal-to-track contact when the wheel and rail are correctly matched. Wheel type, wheel size, bearing type, carriage material and wheel quantity can be customized.
Product Applications
POK sliding door roller assemblies are suitable for sliding door and window systems where a polymer wheel, bearing rotation and adjustable metal carriage are required. Typical applications include:
Aluminum sliding doors: the recessed carriage fits inside a compatible aluminum bottom profile and the POK wheels run along the lower track.
uPVC sliding doors: the carriage can be reviewed for compatible uPVC door profiles and track dimensions.
Patio and balcony doors: single, tandem or multi-wheel configurations can be selected for the door structure.
Commercial entrances: the metal carriage and POK wheel assembly can be reviewed for repeated door movement.
Sliding windows: the POK wheel and carriage can be matched to a compatible lower rail.
Interior partitions: the adjustable roller provides guided movement and height correction for larger panels.
Custom door systems: wheel profile, wheel size, bearing, carriage material and adjustment range can be customized.
Replacement roller assemblies: the original carriage, wheel and track can be measured for a matching replacement.
