How to Replace Obsolete Stegbar Window Rollers with the New Replacement (SKU 6070)

How to Replace Obsolete Stegbar Window Rollers with the New Replacement (SKU 6070)

How to Replace Obsolete Stegbar Window Rollers

If you're replacing the original rollers in an older Stegbar sliding window, the good news is that there's a new replacement available.

For most windows, it's a straightforward swap. However, some older Stegbar window sashes were manufactured with slightly different roller openings, meaning a small modification may be needed before the new roller will fit correctly.

This guide explains what to expect before you begin.

What You'll Need

  • Replacement Stegbar window rollers (SKU 6070)
  • Screwdriver
  • Basic hand tools
  • A file or suitable tool if minor modification is required

Watch the Step-by-Step Video Tutorial

Our video walks you through the difference between the old and new Stegbar window rollers, explains when modifications are required, and shows how to prepare the replacement for installation.

Do All Windows Need Modification?

Not necessarily.

In our experience:

  • Most installations (around 80%) are a direct replacement with no modification required.
  • Some installations (around 20%) may require a minor adjustment before the roller will fit properly.

This variation is due to differences in the roller opening found on some older window sashes.

When Is Modification Required?

If the new roller doesn't slide neatly into the opening, there are two possible solutions:

Option 1: Slightly enlarge the roller opening

Some older window sashes have a narrower opening than the replacement roller requires.

Carefully enlarging the opening allows the new roller carriage to fit correctly.

Option 2: Chamfer the roller carriage

In some cases, lightly chamfering (bevelling) the square edges of the replacement roller carriage is enough to help it fit into the existing opening.

Only remove the minimum amount of material necessary to achieve a proper fit.

Installing the New Roller

Once the roller fits correctly:

  1. Remove the window sash from the outer frame.
  2. Install the replacement roller into the sash.
  3. Secure it in position.
  4. Reinstall the sash into the window frame.
  5. Check that the window slides freely and smoothly.

If you're unsure how to remove the sash safely, watch our dedicated YouTube tutorial before starting.

Common Mistakes to Avoid

  • Forcing the roller into an opening that's too small.
  • Removing too much material when chamfering the carriage.
  • Forgetting that SKU 6070 is supplied as a left-hand and right-hand pair.
  • Reinstalling the sash before checking that both rollers move freely.

Recommended Replacement Parts

The correct replacement for obsolete Stegbar window rollers is SKU 6070.

These rollers are supplied as a matched left-hand and right-hand pair for compatible Stegbar sliding windows.

Browse our Stegbar window hardware and replacement roller range at Mr Windows to find the right part for your repair.

Pro Tip

Before modifying anything, test-fit the replacement roller first.

Many customers discover the new roller fits perfectly without any adjustment, so only make modifications if they're genuinely needed.

Need Help Identifying Your Roller?

Not sure if SKU 6070 is the right replacement?

Send the Mr Windows team clear photos of your existing roller, along with any measurements you can provide. We'll help you identify the correct replacement before you order.

Frequently Asked Questions

Will SKU 6070 fit every Stegbar sliding window?

It suits many older Stegbar sliding windows, but some installations may require a small modification depending on the sash design.

Why is the original roller no longer available?

The original style has become obsolete, so a replacement has been developed to keep older Stegbar windows serviceable.

Why are there two rollers in the pack?

SKU 6070 includes a left-hand and a right-hand roller because both sides of the sliding sash use different roller assemblies.

Can I install these myself?

Yes. If you're comfortable removing the window sash and using basic hand tools, this is a DIY-friendly repair. If any modification is required, work carefully and remove only the minimum material necessary.

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