Nylon Bulb Roller 40mm, 12mm Threaded Stud, for Sliding Gate Guides

A small bulb shaped nylon roller on a 12mm threaded stud. The tapered black body and the rounded band give it a low-friction contact point against a gate frame, and the stud with its two nuts and washers fits it to a bracket or a drilled plate. It is sold as a 40mm roller and drawn at 43mm across the widest point, with a head 38mm high and 77mm overall including the stud. A load rating is not published for this line, and it is a guide part, not a wheel for carrying a gate. The price shown is for one roller, with a minimum order of 12.

Why a bulb roller works

The rounded band rolls rather than rubs. A gate frame that touches a fixed block wears both surfaces, whereas a small roller turns with the movement and is kinder to the paint.

The stud is adjustable. Two nuts on the 12mm stud let you set the head at exactly the right distance from the gate, then lock it.

Cheap to replace. These are wearing parts. It is much better to change a small roller than to repaint a gate frame scored by a worn guide.

Where it is used

Guide brackets and post plates on sliding gates, and gate frames that need steadying as they travel, usually fitted in pairs on opposite sides of the gate. The 40mm roller and 12mm stud give a little more presence on a heavier guide bracket.

Specifications

Choosing the right roller

This is the larger of the two bulb rollers, with a 12mm stud rather than 10mm and a head 11mm taller. Check the hole in your bracket before ordering, as the stud size has to suit it. If you need a longer contact on a tall rail, a long roller does that job, and a ready-made bracket with rollers fixed in place saves you drilling.

See the full range of gate wheels and sliding gate hardware.

Fitting and care

Fit the stud through your bracket, with one nut each side of the bracket and a washer against the roller's shoulder, and set the head so the gate runs close beside it without forcing against it. Lock the two nuts together. A roller should turn when the gate touches it, so run the gate by hand and check it does not bind before tightening fully.

Check the rollers at each service, especially on a gate that opens many times a day, and change any roller that has flats or has stopped turning.

Frequently asked questions

Ordering and delivery

Order 12 or more online, with Express UK Delivery to your site and same-day dispatch on orders before 2pm, Monday to Friday. For a larger job, call 01744 520 110 or email sales@industrialsuppliesco.co.uk and we will confirm availability and delivery before you order.