Change Window Help
Help aligning mantle, bowl, and cheek windows.
Common questions about aligning mantle, bowl, and cheek windows
Many customers ask how to ensure correct alignment of the mantle, bowl liner, and cheek plate windows during maintenance or component changes. This is critical for achieving the correct crushing chamber profile and ensuring consistent feed distribution. Improper window alignment can cause uneven wear, reduce throughput, and affect nip angle and closed side setting.
We often hear from crews working on site who are unsure whether the windows are in OEM position after a liner change, especially if the mantle, bowl, or cheeks are aftermarket or have been rebuilt. In some cases, the window locations might not match the original reference marks or might have been repaired several times.
If you are experiencing unusual wear patterns, inconsistent product size, or struggle to choke feed, misaligned windows are a likely culprit. Correct window orientation is also vital for safe lifting and correct engagement with the backing compound and dowels during installation.
Information to send us for alignment support
To help you sort out window alignment, we need the following details so we can check against our drawings and OEM profiles for your crusher. Clear, accurate information helps speed up the process.
- Crusher make, model, and serial number
- Clear photos of current mantle, bowl, and cheek plate positions
- Measurements of window locations relative to fixed reference points
- Any markings, part numbers, or previous repair welds visible
- Description of wear patterns or product issues noticed
What happens after you email us
Once you have sent your details and photos through our contact form, one of our technical team will review your information. We match your photos and measurements with our stock profiles and OEM archives.
You'll get a reply by email or phone, depending on what you include with your enquiry. We may ask a few more questions if something is unclear, or organise a site visit within Gauteng or nearby provinces if needed. If parts are required, we check stock holding in the Sunnyrock yard or at your nearest showroom. We will also advise on safe lifting, correct torque for liner bolts (as per OEM manual), and best campaign planning for future lining changes.