31mm Convex Sliding Door Roller – Acetal Threaded Stud 30kg

The 31mm Convex Sliding Door Roller is a direct replacement wheel for sliding patio, screen, shower and wardrobe doors. It is turned from acetal and rated to 30kg per roller, and the convex profile runs in a grooved or channel track, common on shower screens, flyscreens and wardrobe doors.

Key Features

• Convex profile, 31.2mm outside diameter
• Acetal wheel with a 6.6mm bore
• 8.8mm groove width
• 11.9mm overall width
• Rated to 30kg per roller
• Supplied with a threaded stud

Ideal For

• Sliding patio and screen doors
• Shower screens and wardrobe doors
• Replacing worn or seized rollers that drag or jump the track

Pack Contents

• 1 x roller
• 1 x threaded stud

Compatibility

• Fits top hung and hanging doors
• Check the dimension drawing against your existing part before ordering — sliding door hardware varies between brands and series

Specifications

• TradeBase SKU: ROL31CVX30
• Outside diameter: 31.2 mm
• Overall width: 11.9 mm
• Groove width: 8.8 mm
• Bore diameter: 6.6 mm
• Wheel material: Acetal
• Load rating: 30 kg per roller
• Mounting: Threaded Stud

Installation Tips

• Check the track before you fit. File any burrs or flat spots smooth — a damaged track will chew out a new roller within weeks.
• Clean all grit and old grease out of the track. Grit is what kills a roller, not load.
• Replace carriages in pairs. A new roller running against a worn one carries uneven load and both wear out early.
• Measure the old roller before ordering — the replacement has to match on outside diameter and overall width.
• Match the tread profile and the axle as well. Flat, concave, convex and V-groove wheels are not interchangeable, and the bore or stud thread must suit the existing housing.
• Slide the door through its full travel before refitting stops or screens.

Care & Maintenance

• Use a dry lubricant only — silicone or dry PTFE. Oil and grease hold dust and grind the roller.
• Sweep the track out every few months, more often in coastal or dusty areas.

Warranty

10-year warranty. This warranty is in addition to your rights under the Australian Consumer Law.

Check the fit before you buy

Download the TradeBase Actual Size Identifier (PDF) and print it on A4 at 100% / Actual size — not Fit to page. The part is reproduced at true 1:1 scale on a 10 mm grid and measures 30.7 mm overall. Lay your existing part straight onto the page to confirm it matches. A calibration bar on the sheet lets you check the printer has not scaled the page.