Worn rollers are the most common reason a sliding door sticks, jumps the track or drags. The wheels at the base carry the door’s full weight, so over time they flatten, seize or break. Fit the right replacement and the door glides again.
Slidemaster Hardware stocks replacement rollers and wheels to suit the major Australian window and door brands, delivered Australia-wide.
Rollers to suit your brand
The carriage shape, wheel diameter and fixing points differ between brands. Match your door brand to the right part:
Top-selling sliding door rollers
Our most-ordered replacement rollers. Not sure which fits? Match your brand above, or send us a photo below.
Find the right roller for your door
Sliding door rollers are not universal. Before you buy, identify four things about your old roller so the replacement fits and carries the weight.
Wheel diameter
Measure across the wheel face. This is the most important fit dimension.
Carriage size
Length and width of the metal housing the wheel sits in, and where it screws in.
Single or twin wheel
One wheel, or two wheels in a tandem carriage that spreads heavier loads.
Wheel material
Nylon for lighter doors, or steel ball-bearing for heavy glass and stacker doors.
Not sure which one? Send us a photo
Pull the old roller out, 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 door roller types explained
Match the roller to the door’s weight and how it hangs. Heavier and glass doors need bearing wheels and tandem carriages.
| Type | Best for | Why |
|---|---|---|
| Single wheel | Lighter doors, flyscreens | Simple, low cost, enough for light loads |
| Tandem (twin wheel) | Heavier sliding doors | Two wheels spread the load and run smoother |
| Nylon wheel | Standard aluminium doors | Quiet and economical for everyday weight |
| Steel ball-bearing | Heavy glass & stacker doors | Carries more weight, smoother, longer life |
| Height-adjustable | Most replacements | Lets you level the door after fitting |
| Bottom-rolling vs top-hung | Patio vs cavity/barn doors | Check which way your door is carried before ordering |
How to tell your rollers need replacing
- The door drags, grinds or feels heavy to slide.
- You hear scraping or clicking along the bottom track.
- The door tilts or sits unevenly in the frame.
- Adjusting the height screws no longer helps.
- The wheel looks flat, cracked or jammed with debris.
If adjustment stops working, the roller itself has worn out and needs replacing.
How to replace sliding door rollers
Full step-by-step in our guide to replacing sliding door rollers. In short:
- Lift the door off the track and lay it flat.
- Back off the adjustment screws and remove the old roller from each end.
- Fit the matching replacement roller into the housing.
- Refit the door, then set the height until it sits level and slides freely.
Watch: replacing a sliding door roller, demonstrated by Kobus de Coning, founder of Slidemaster — 30+ years in aluminium door hardware.
Buy your rollers with confidence
Related sliding door 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 roller before you order and we’ll match it.
Frequently asked questions
Are sliding door rollers universal?
No. Roller size, wheel diameter and the carriage housing vary between brands and door types. Match the replacement to your door brand, or measure the old roller before you order.
Are the rollers on a sliding door replaceable?
Yes. Rollers are a wear part designed to be swapped out. Lift the door off, remove the worn roller, fit the matching replacement and reset the height.
Why is my sliding glass door not rolling smoothly?
Usually worn or flat rollers, a dirty track, or rollers set too low. Clean the track first. If the door still drags after adjustment, the rollers have worn out and need replacing.
How much does sliding door roller replacement cost?
The roller parts themselves are low cost. The price depends on the brand, the load rating and how many rollers your door uses. Order the matching part online and fit it yourself, or have an installer do it.
How do I measure a sliding door roller?
Pull the old roller out and measure the wheel diameter across the face, then the length and width of the carriage. Note whether it has one wheel or two, and whether the wheel is nylon or steel. Send us a photo with the measurement if you are unsure.