30 Years of Experience in Circular Knives for Metal Slitting
Custom Circular Knife Manufacturer
SENDA manufactures custom circular knives and slitting tooling for steel coil, stainless steel, copper foil, aluminum foil, electrical steel, and lithium-ion battery electrode slitting.
30 Years Experience
Custom-Made Knives
Flexible Order Quantities
Material Selection Support
Complete Slitting Tooling
Different outside diameters, bore sizes, thicknesses, edge geometries, keyways, and non-standard structures can be produced to suit your requirements.
Circular Knives and Matched Tooling for Metal Slitting
From Individual Circular Knives to Complete Slitting Tooling Sets
Experience in Metal Slitting Applications
Manufacturing the Knife Is Only Part of the Job – We Also Need to Understand the Material You Are Slitting
Metal Slitting Application Experience
For metal coil and precision strip slitting, we evaluate blade material, dimensional accuracy, edge geometry, and the compatibility of the complete tooling system.
Steel Coil Slitting Experience
Circular knife material, target hardness, and dimensional requirements are determined according to steel coil thickness, strength, slitting speed, and machine conditions.
Lithium-Ion Battery Electrode Slitting Experience
Battery electrode slitting requires high standards for edge quality, burr control, surface protection, and batch-to-batch consistency.
Stainless Steel Slitting Experience
Different stainless steel grades and thicknesses require a careful balance of wear resistance, edge stability, hardness, and toughness.
Copper Foil Slitting Experience
Because copper foil is thin and sensitive, it places higher demands on blade surface quality, edge consistency, tooling accuracy, and slitting stability.
Aluminum Foil Slitting Experience
Aluminum foil slitting requires careful control of surface scratching, material adhesion, edge deformation, and blade surface condition.
Anonymized Case Summary
Custom Circular Knives for Stainless Steel Slitting
A customer needed to slit SUS 200, 300, and 400 series stainless steel with a material thickness of approximately 3-6 mm.
Based on the material grades, thicknesses, machine conditions, and operating requirements provided by the customer, SENDA manufactured custom circular knives from SD36 and matched the blade specifications and material performance to the application.
Solutions to Common Slitting Problems
Burrs, Edge Chipping, and Short Blade Life Are Not Always Caused by Insufficient Sharpness
When slitting problems occur, the cause may come from the blade material, but it may also be related to tool clearance, dimensional accuracy, spacers, PU rings, arbor condition or machine adjustment.
Please send SENDA your cutting material, material thickness, blade drawing, current specifications and problem photos. We will help analyze the possible influencing factors based on your actual slitting conditions.
Excessive Burrs After Slitting
- Unclean cut edges
- Large burrs on the edge
- Reduced product consistency
How SENDA Supports You
We help check tool clearance, blade wear, material selection, flatness, spacer accuracy and the matching of the complete slitting tooling setup.
Chipped / Broken Cutting Edge
- Nicks or cracks on the edge
- Abnormal blade damage
- Downtime, blade replacement or material scrap
How SENDA Supports You
Based on the hardness and thickness of the material being cut and the production conditions, we help confirm whether the blade material, heat treatment and blade structure match the current application.
Tool Interference /Blade Jamming
- Abnormal tool wear
- Blade damage
- Unstable slitting or abnormal edge condition
How SENDA Supports You
According to the circular knife and tooling component specifications, we help check possible mismatches in clearance, parallelism, spacer accuracy, overlap and overall setup arrangement.
Short Blade Life and Frequent Regrinding
- Blades become dull quickly
- Blade change frequency increases
- Longerdowntime and higher production cost
How SENDA Supports You
Based on the actual cutting material and wear condition, we help recommend a more suitable material system, heat-treatment direction and accuracy requirement.
Unstable Slit Width or Edge Quality
- Variation in slit width
- Material wandering
- Fluctuating edge quality
- Unstable high-speed production
How SENDA Supports You
From the perspective of circular knife accuracy, bore size, runout, concentricity and full slitting tooling matching, we help analyze the possible source of the problem.
Material Scratching or Sticking to the Blade
- Scratches on the material surface
- Poor material passing performance
- Unstable foil or electrode edge quality
How SENDA Supports You
According to the circular knife and tooling component specifications, we help check possible mismatches in clearance, parallelism, spacer accuracy, overlap and overall setup arrangement.
Donu2019t see your slitting problem above?Send us photos of the issue, blade specifications, and details of the material being cut. We will analyze the possible causes based on your actual operating conditions.
Circular Knife Materials and Performance
Matching Materials to Operating Conditions
Material Selection Factors
- Material to Be Slit
- Tensile Y/S
- Tensile T/S
- Material Thickness
- Tensile Strength
- Slitting Speed
- Circular Knife Dimensions
- Machine Used
- Current Blade Material
- Current Customer Requirement
D2 / 1.2379 / SKD11
- Good wear resistance
- Dimensional stability
H13 / 1.2344 / SKD61
- Good toughness
- Impact resistance
M2 / 1.3343 / SKH51
- High wear resistance
- Good edge retention
HMB
- High hardness
- Balanced toughness
Tungsten Carbide
- Extremely high wear resistance
- Excellent edge retention
SENDA Special Steel
- Customized material solutions
- Special application matching
The goal of material selection is not simply to achieve higher hardness, but to balance wear resistance, toughness, edge stability, regrinding intervals, and actual production conditions.
Customization Capabilities
Custom Manufacturing from Drawings and Samples
The goal of material selection is not simply to achieve higher hardness, but to balance wear resistance, toughness, edge stability, regrinding intervals, and actual production conditions.
Customizable Features
- Outside Diameter
- Bore Diameter
- Thickness
- Bore Tolerance
- Thickness Tolerance
- Flatness
- Parallelism
- Concentricity
- Hardness
- Surface Finish
- Edge Geometry
- Keyway
- Non-Standard Structures
- Dimensions of Matched Slitting Tooling
Three Customization Methods
- Manufactured from Drawings
- Manufactured from Samples
- Manufactured from Machine Parameters
SENDA End-to-End Service
A Clearer and More Efficient Circular Knife Customization Process
You do not need to define every technical parameter before contacting us.
Tell us the material to be slit, blade specifications, machine conditions, and current problem. SENDA will help you confirm the material, dimensions, design, and production requirements step by step.
Requirement Review
Review drawings, samples, materials and actual cutting conditions.
Solution Design
Confirm the blade structure, material, tolerances and tooling solution.
Sample Production
Produce samples and verify dimensions, fit and cutting performance.
Mass Production
Manufacture in batches with controlled production and quality processes.
Inspection&Packaging
Inspect dimensions, hardness and surface quality before secure packaging.
Documentation & After-Sales
Provide inspection records and follow up after delivery.
SENDA End-to-End Service
A Clearer and More Efficient Circular Knife Customization Process
You do not need to define every technical parameter before contacting us.
Tell us the material to be slit, blade specifications, machine conditions, and current problem. SENDA will help you confirm the material, dimensions, design, and production requirements step by step.
What if I don't know the difference between each material?
Based on the hardness and thickness of the material being cut and the production conditions, we help confirm whether the blade material, heat treatment and blade structure match the current application.
What if I don't know the difference between each material?
Based on the hardness and thickness of the material being cut and the production conditions, we help confirm whether the blade material, heat treatment and blade structure match the current application.
What if I don't know the difference between each material?
Based on the hardness and thickness of the material being cut and the production conditions, we help confirm whether the blade material, heat treatment and blade structure match the current application.
What if I don't know the difference between each material?
Based on the hardness and thickness of the material being cut and the production conditions, we help confirm whether the blade material, heat treatment and blade structure match the current application.
SENDA
Senda Group offers an extensive range of blades tailored for the metal, paper, packaging, plastic, recycling, and food industries. Whether you require OEM or ODM services, our adaptable manufacturing capabilities enable us to customize solutions to meet your specific requirements. Our mission is to deliver superior machine blades that enhance efficiency, accuracy, and productivity for our clients. We are committed to innovation, quality, and customer satisfaction, ensuring that our products consistently surpass your expectations.
Material Preparation
Heat Treatment
CNC Machining
Precision Grinding
Edge Finishing
Factory & Manufacturing Capabilities
30 Years of Metal Slitting Knife Experience Built Through Continuous Manufacturing Expertise
From material preparation and heat treatment to precision grinding and final inspection, SENDA controls each manufacturing stage for custom circular knives.
Quality Inspection
Quality Control Items
Critical Dimensions Must Be Measured, Not Merely Specified on a Drawing
- Material to Be Slit
- Material Thickness
- Tensile Strength or Hardness
- Slitting Speed
- Circular Knife Dimensions
- Machine Used
- Current Blade Material
- Current Cutting Problem
Three Customization Methods
Material Verification
Product condition is checked at key manufacturing stages to prevent nonconforming parts from proceeding to subsequent operations.
In-Process Inspection
Product condition is checked at key manufacturing stages to prevent nonconforming parts from proceeding to subsequent operations
Critical Dimension Inspection
The outside diameter, bore diameter, thickness, and other drawing-specified dimensions and tolerances are measured.
Surface and Cutting-Edge Inspection
The blade surface, finish, and cutting-edge condition are inspected for visible damage or abnormalities.
Final Pre-Shipment Inspection
A final inspection is completed before packaging, and relevant inspection records or reports can be provided according to customer requirements.
Certificates
SENDA and Customer
High-precision solutions. Consistent quality. Built for your performance
SENDA manufactures custom circular
knives and slitting tooling for metal
slitting. Trusted by global industries
for precision, durability, and performance.
- Circular Knives
- Slitter Blades
- Rotary Shear Blades
- Rubber Rings
- Spacers
- Circular Knives
- Slitter Blades
- Rotary Shear Blades
- Rubber Rings
- Spacers
- Circular Knives
- Slitter Blades
- Rotary Shear Blades
- Rubber Rings
- Spacers