13
Oct
In late May, we received an inquiry from our client for a custom 1A1 resin‑bonded diamond grinding wheel, model 1A1‑D400‑20‑4‑127‑R10.
| Item | Specification |
|---|---|
| Wheel Type | 1A1R Resin bond diamond wheel |
| Outer Diameter (D) | 400 mm |
| Total Thickness | 20 mm |
| Bore Size (H) | 127 mm |
| Diamond Segment Width | 4 mm |
| Workpiece | Chromium‑alloy steel pipe |
This resin diamond wheel was designed for surface and cylindrical grinding of alloy steel pipe, requiring stable cutting performance and precise edge geometry for end‑user mass production.

After the wheel was delivered, our customer raised a technical complaint on July 7. The original wheel came with rounded (R10 arc‑shaped) diamond segments, which could not meet the end‑user’s production requirements. The rounded diamond edge made the wheel unusable for their application; the end‑user urgently needed a wheel with straight‑edge diamond segments instead of rounded profile.
A conventional solution would be returning the original wheel for substrate reuse. However, our technical team evaluated and found that re‑using the returned wheel substrate would risk losing dimensional precision, and return shipping would take an extra 7‑10 days, creating costly downtime for the end‑user production line.
To avoid production stoppage and keep precision intact, our engineering team proposed an optimized solution:
Our engineers revised the drawing to implement the straight diamond segment profile, strictly controlling dimensional tolerances for OD 400 mm, bore 127 mm and diamond layer width 4 mm to match the customer’s grinding machine parameters.

“The wheel it is good, we do not received any complaint from the client. In the future we will receive also other orders from this client.”
On September 24, the client shared above positive feedback. The customized straight‑edge resin bond diamond wheel worked perfectly on‑site. Zero complaints came from the end‑user after putting it into service. Our flexible problem‑solving and fast custom manufacturing won trust, and follow‑on orders are expected from this end‑user project.

If you need custom resin‑bonded diamond wheels for your cylindrical or surface grinding jobs, welcome to send us your drawing or requirements for technical proposal.