Roller Press Shim Selection Guide: Material, Thickness & Compatibility

Roller press shims are precision components installed between rollers to adjust roller gap spacing. Shim material selection and thickness control directly affect board accuracy and equipment stability.

1. Shim Classification and Materials

Carbon Steel Shims — Low cost, but poor wear resistance and precision retention, suitable for low-precision requirement scenarios
Alloy Steel Shims — Good comprehensive performance, GDNOS standard material, excellent wear resistance and precision retention
Stainless Steel Shims — Corrosion-resistant, suitable for scenarios with corrosive raw materials
Hard Alloy Shims — Extremely high hardness, used in high-wear areas but with higher cost

2. Thickness Selection Principles

Thickness Increment Rule: Shim thickness typically progresses in 0.5mm or 1mm increments. On SACMI PCR+ machines, standard shim thickness range is 1-12mm. When selecting, back-calculate required shim combinations based on target board thickness.

3. Compatibility Checklist

Confirm shim outer diameter matches roller bearing housing
Confirm shim inner bore matches shaft diameter (typically H7/h6 fit)
Confirm material hardness matches working pressure
Confirm temperature resistance meets nip zone temperature requirements (typically requires ≥250°C resistance)

4. GDNOS Custom Shim Service

GDNOS provides non-standard shim customization services, offering precise dimension and material-matched shim solutions based on customer equipment parameters and process requirements, ensuring roller gap adjustment accuracy and stability.

Need technical support? Contact GDNOS: +86 135 1270 0969

Brand names such as SACMI, KEDA, and HLT mentioned on this website are used solely to indicate product compatibility. GDNOS is not authorized by, affiliated with, or endorsed by these brands.