5-7mm Stainless Steel Sash Pulley Sliding Door Roller Runner Wheel Track Pulley

Measure the outer diameter of the axle pin or shaft in your existing track hardware. If it measures approximately 5mm (~0.20 in), select the 5mm bore; if it measures approximately 7mm (~0.28 in), select the 7mm bore. Using a digital caliper gives the most accurate reading. If your axle falls between sizes, choose the larger bore and use a shim or sleeve for a snug fit.

Flat-wheel pulleys have a cylindrical rolling surface and are designed for flat-bottom channels, V-groove rails, or angle-iron tracks. Concave-wheel pulleys have a curved groove machined into the rolling surface, which cradles a round rod or wire rope and prevents the wheel from drifting sideways. Choose the profile that matches your track's cross-section.

Thickened variants have a deeper wheel body, which increases load-bearing surface area and reduces the risk of deformation under repeated stress. They are recommended when the sliding panel or door is heavier than average, when the pulley will cycle frequently (e.g., a door opened and closed dozens of times per day), or when you need a longer service interval before replacement.

The thickened bearing flat wheel incorporates a rolling-element bearing that is typically pre-greased at the factory. For most light-duty sliding door or window applications, no additional lubrication is needed at installation. In high-cycle or dusty environments, applying a small amount of bearing grease every 6–12 months will extend service life. Plain copper and brass bushing styles benefit from a light application of general-purpose grease or dry PTFE lubricant on the axle at installation.

Copper and brass alloys have inherent corrosion resistance and perform well in humid indoor environments, such as bathrooms or kitchens, and in sheltered outdoor applications. They will develop a natural patina over time, which does not affect function. For fully exposed outdoor installations subject to rain or salt air, consider applying a clear protective coating to the wheel body, or contact us to confirm suitability for your specific environment.

Yes. Copper and brass are softer than steel and aluminum, which means the wheel will conform slightly to the track surface without scoring or gouging the rail — a desirable property for long-term track preservation. Ensure the track groove width and profile match the wheel style (flat or concave) and that the bore size matches your axle diameter.

Each order contains 1 pulley wheel. To order multiple pieces, simply increase the quantity in your cart. If you need larger quantities for a commercial or trade project, contact us through the store's contact page to discuss volume options.