Description
What Are Slitting Shims?
Slitting shims are ultra-precision adjustment rings installed within the slitting tooling stack between slitter knives, spacers, and stripper rings.
Their primary function is to fine-tune the horizontal clearance and overlap of the tooling system, ensuring consistent cutting performance and repeatable setup accuracy.
Proper shim selection helps operators:
- Optimize knife overlap
- Reduce burr formation
- Improve strip edge quality
- Maintain strip width accuracy
- Reduce setup variation
- Extend slitter knife life
Even a few microns of clearance variation can significantly affect slitting quality, especially when processing thin gauge materials.
Why Choose Our Precision Slitting Shims?
Micron-Level Manufacturing Accuracy
Our shims are manufactured to extremely tight tolerances:
- Standard thickness tolerance: ±0.001 mm
- Ultra-precision tolerance: ±0.0005 mm
- Parallelism: ≤0.002 mm
- Flatness: ≤0.002 mm
This ensures consistent stack height and repeatable slitting setups across multiple production runs.
Benchmark Quality Without Premium Brand Pricing
Many globally recognized slitting tooling brands rely on the same manufacturing principles, materials, and tolerances used in our production process.
By manufacturing directly and eliminating unnecessary distribution layers, we provide comparable precision and reliability with significantly lower procurement costs.
This allows customers to obtain premium-quality tooling performance while maintaining competitive operating costs.
Premium Alloy Steel Construction
Manufactured from high-grade imported alloy steel, our shims offer:
- Excellent dimensional stability
- Superior wear resistance
- Long service life
- Consistent hardness throughout the entire component
Vacuum Heat Treatment for Long-Term Stability
Each shim undergoes vacuum hardening to ensure:
- Uniform hardness distribution
- Improved wear resistance
- Stable thickness accuracy
- Long-term dimensional reliability
Precision Surface Finishing
Available surface finishes include:
- Precision Ground
- Mirror Polished
- Burr-Free Surface Finish
Benefits include:
- Improved stack accuracy
- Easier assembly
- Reduced positioning errors
- More stable knife alignment
OEM Compatibility
Our shim rings are manufactured according to customer drawings, samples, or existing tooling systems and are compatible with most major slitting line configurations worldwide.
Technical Specifications & Custom Options
| Item | Standard / Available Options |
|---|---|
| Outer Diameter (OD) | Custom |
| Inner Diameter (ID) | Custom |
| Thickness | Custom |
| Thickness Tolerance | ±0.001 mm Standard |
| Ultra Precision Tolerance | ±0.0005 mm |
| Parallelism | ≤0.002 mm |
| Flatness | ≤0.002 mm |
| Material | Premium Alloy Steel |
| Heat Treatment | Vacuum Hardened |
| Surface Finish | Ground / Mirror Polished / Burr-Free |
| Manufacturing Basis | Drawing / Sample / Existing Tooling System |
Manufactured according to customer drawings, samples, or existing slitting tooling configurations to ensure seamless integration with current production lines.
Frequently Asked Questions
What is the purpose of slitting shims?
Slitting shims are used to fine-tune knife clearance and improve slitting accuracy.
What tolerance can you achieve?
Standard tolerance is ±0.001 mm, with ultra-precision manufacturing available down to ±0.0005 mm.
Can you manufacture custom shim sizes?
Yes. We manufacture custom shim rings according to drawings, samples, or machine specifications.
Do you provide complete slitting tooling systems?
Yes. We supply slitter knives, stripper rings, spacer rings, shims, and separator discs as complete tooling packages.
