Su Zhou Jin Li Cutting Tools Co.,Ltd

Rotary Slitter Knives

Custom Rotary Slitter Knife Manufacturer | Carbide, HSS & Tool Steel Slitting Knives

High-Precision Custom Slitter Knives for Metal Coil Slitting

SUZHOU JIN LI (SZJL) Cutting Tools manufactures standard and custom Rotary Slitter Knives for metal coil slitting applications. Our circular slitting knives are available for carbon steel, stainless steel, aluminum, copper, brass, silicon steel, electrical steel and other metal strip materials.

We manufacture both large slitter knives and small, thin slitting knives, including Tungsten Carbide slitter knives for precision slitting of aluminum, copper and other non-ferrous metal coils.

Knife material, edge geometry, hardness and dimensional accuracy can be selected according to strip material, thickness, hardness, line speed, edge quality, required tool life and production requirements.

Custom outside diameter, inside diameter, thickness, edge geometry, material, hardness, mounting features, surface finish and OEM marking are available according to drawings, samples or existing tooling.

Description

Materials & Technical Specifications

Item Options / Capability
Tool Steel D2, H13, Cr12MoV, LD, Custom Alloy Tool Steels
HSS M2, M35 Cobalt HSS
Tungsten Carbide Ultra-Fine Grain Carbide, Application-Specific Grades
Outside Diameter Custom
Inside Diameter Custom
Thickness Custom, including thin slitter knives
Edge Geometry Sharp Edge, Micro Radius, Bevel, Custom
Hardness Application-Specific / Custom
Surface Finish Precision Ground, Lapped, Mirror Polished
Thickness Tolerance Up to ±0.001 mm
Ultra-Precision Option Up to ±0.0005 mm
Parallelism ≤0.002 mm
Flatness ≤0.002 mm
Mounting Features Keyways, Pin Holes, Custom
Marking OEM Laser Marking / Custom

Actual tolerances depend on knife dimensions, material and customer specifications.

Slitting Applications

Custom Rotary Slitter Knives can be manufactured for:

  • Carbon Steel
  • Stainless Steel
  • Aluminum
  • Copper
  • Brass
  • Silicon Steel / Electrical Steel
  • Coated Metal Strip
  • Thin-Gauge Metal
  • Precision Non-Ferrous Metal Slitting

Tungsten Carbide slitter knives are available for applications requiring high wear resistance, long tool life or stable cutting performance. Small-diameter and thin carbide slitting knives can also be manufactured for precision slitting of aluminum, copper and other non-ferrous metal coils.

Custom Manufacturing

We manufacture slitter knives according to drawings, samples, existing tooling dimensions or application requirements.

Custom options include:

  • Knife diameter and thickness
  • Bore size
  • Material and carbide grade
  • Edge geometry
  • Hardness
  • Surface finish
  • Mounting features
  • Dimensional tolerances
  • OEM laser marking

Small-batch and repeat production are available.

Related Slitting Line Tooling

In addition to Rotary Slitter Knives, we manufacture:

  • Slitting Line Spacers
  • Precision Shims
  • Bonded Rubber Stripper Rings
  • Separator Discs
  • Overarm Separators

These components can be supplied individually according to existing slitting line specifications.

FAQ

What materials can Rotary Slitter Knives be used for?

Our slitter knives can be manufactured for carbon steel, stainless steel, aluminum, copper, brass, silicon steel, electrical steel and other metal strip materials. Material and knife geometry are selected according to the specific application.

Do you manufacture Tungsten Carbide Slitter Knives?

Yes. We manufacture Tungsten Carbide Slitter Knives, including small and thin carbide knives for precision slitting applications such as aluminum, copper and other non-ferrous metal coils.

Can you manufacture small and thin slitter knives?

Yes. We manufacture small-diameter and thin slitting knives in Tool Steel, HSS and Tungsten Carbide according to the required dimensions and application.

What tolerance can you achieve?

Thickness tolerance can reach ±0.001 mm, with ultra-precision production down to ±0.0005 mm available for suitable specifications.

Can you manufacture replacement slitter knives?

Yes. Replacement knives can be manufactured according to drawings, samples, existing tooling or machine requirements.

Do you support small-batch custom production?

Yes. Custom and small-batch production is available according to product specifications and order requirements.

Request Custom Rotary Slitter Knives

Send us your drawing, sample, knife dimensions, strip material or slitting requirements for technical review and quotation.

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