A sliding window that sticks, drops or grinds almost always has worn rollers. The small carriage at each bottom corner carries the sash, and the nylon wheel flattens or seizes over the years. Fit the right replacement and the window glides again.
Slidemaster Hardware stocks replacement window rollers and carriages to suit the major Australian window brands, delivered Australia-wide.
Window rollers to suit your brand
Carriage shape, wheel diameter and the pin fixing differ between brands. Match your window brand to the right part:
Top-selling sliding window rollers
Our most-ordered replacement window carriages. Not sure which fits? Match your brand above, or send us a photo below.
Find the right roller for your window
Window rollers are not universal. Before you buy, identify four things about your old carriage so the replacement fits and runs true.
Wheel diameter
Measure across the wheel face. The most important fit dimension.
Carriage size
Length and width of the plastic carriage body, and how it sits in the sash.
Pin or moulded
Many AU carriages run the wheel on a brass pin. Note if yours has one.
Wheel material
Nylon for standard windows, or stainless bearing for heavy or coastal sashes.
Not sure which one? Send us a photo
Take the old carriage out of the sash, snap a photo and note the wheel diameter. Our team matches it to the right part, even if you do not know the brand. Free identification, no obligation.
Sliding window roller types explained
Match the roller to the sash weight and the track. Heavier and coastal windows need a stainless bearing.
| Type | Best for | Why |
|---|---|---|
| Nylon flat roller | Standard aluminium windows | Quiet and economical for everyday sashes |
| Stainless (SS304) bearing | Heavy or coastal windows | Corrosion-resistant, smoother, longer life |
| Brass-pin carriage | Most older AU windows | The wheel turns on a brass pin axle — check yours has one |
| Concave vs flat wheel | Match your track profile | A concave wheel rides a raised rail; a flat wheel rides a flat track |
| Single vs twin | Light vs heavy sashes | Heavier sashes use two wheels to spread the load |
How to tell your window rollers need replacing
- The window is hard to slide or sticks part-way.
- The sash drops, tilts or no longer sits square.
- You hear grinding or scraping along the sill track.
- The window jumps the track or won’t latch shut.
- The wheel looks flat, cracked or seized when you check it.
Clean the track first. If the sash still drags, the carriage has worn out and needs replacing.
How to replace sliding window rollers
Most window carriages swap out in a few minutes per sash:
- Lift the sliding sash up and swing the bottom out of the frame to remove it.
- Find the roller carriage at each bottom corner of the sash.
- Unclip or unscrew the old carriage and pull it out.
- Fit the matching replacement carriage, then refit the sash into the track.
Not sure how yours comes apart? Send a photo and we’ll talk you through it.
Buy your window rollers with confidence
Related sliding window parts
Getting your part to you
Same-day dispatch on in-stock items ordered before 1pm AWST.
See our Shipping & Returns Policy.
Send us a photo of your old carriage before you order and we’ll match it.
Frequently asked questions
Are sliding window rollers universal?
No. Carriage size, wheel diameter and the pin fixing vary between brands and window types. Match the replacement to your window brand, or measure the old carriage before you order.
Can you replace sliding window rollers?
Yes. The roller carriage is a wear part. Lift the sash out of the frame, unclip or unscrew the old carriage at each bottom corner, and fit the matching replacement.
Why is my sliding window so hard to open?
Usually worn rollers, a dirty or gritty track, or a sash that has dropped onto the sill. Clean the track first; if it still drags, the carriage has worn out.
How much do sliding window rollers cost?
The carriages themselves are low cost. Price depends on the brand and wheel type, from economical nylon carriages to stainless-bearing units for heavy or coastal windows.
How do I identify my window roller?
Remove the old carriage and note the wheel diameter, the carriage length, whether it runs on a brass pin, and whether the wheel is flat or concave. Send us a photo with the measurement if you are unsure.