When it comes to high-performance slitting lines, the quality of slitting blades and shafts plays a decisive role in slitting accuracy, lines stability, and blade longevity. At Kinbenz, we don't just manufacture slitting machines-we engineer long-lasting performance by selecting the right material from the start.
In this article,we'll explore:
- What materials are commonly used for slitting blades
- Why 42CrMo stands out as our best option
- How Kinbenz manufactures durable, high-load roller shafts
- What benefits this offers to your coil processing line
FQA:
Q: What material is used for slitting blades?
A: Common materials include 9CrSi, SKD 11 and 42CrMo. 42CrMo is a high-strength alloy steel preferred for its toughness, wear resistance, and machinability.
Q: Why is 42CrMo used in slitting machines?
A: If offers excellent quenching and tempering performance, making it ideal for high-load, high-precision applications like metal slitting
Q: What is the typical load capacity of a roller shaft in a slitting line?
A: Kinbenz roller shafts made from 42CrMo have a 250mm diameter and can bear up to 15tons of load.
Why Material Matters in Slitting Blades
Slitting lines are reponsible for transforming large coils into narrower strips. This high-speed, high-precision process requires blades and shafts that can:
- Maintain sharpness over extended runs
- Resist deformation under mechanical stress
- Deliver clean cuts without damaging the material
Poor-quality blades can lead to:
- Burrs on the slit edge
- Excessive tool wear
- Line viberations and instability
- Frequent downtime and due to blade replacement
That's why material choice is critical - especially for manufacturers that demand tight tolerances and high efficiency.
Why Kinbenz Choose 42CrMo Forged Steel for Blades and Shafts
42 CrMo, also know as AISI 4140 or SCM440, is a high-grade alloy structural steel known for:
- High tensile strength
- Excellent toughness and impact resistance
- Good wear resistance
- Machinability and hardenability
Blade and Shaft Manufacturing Process at Kinbenz:
| Component |
Material |
Specs |
Process |
| Slitting Blade |
42CrMo |
Ø85mm hole |
Forged → Machined → Quenched & Tempered |
| Roller Shaft |
42CrMo |
Ø250mm shaft |
Forged → Heat treated → CNC precision turned |
This precision process ensures that every shaft can withstand 15 tons of load, while maintaining exact alignment for consistent slitting quality.
Benefits of the Slitting Line
Choosing Kinbenz slitting blades and shafts made with 42CrMo gives you:
Industrial-Grade Performance
- Withstands of the force of thick materials like hot-rolled steel and stainless steel
- Suitable for high-speed slitting of copper, aluminum, and CR coils
Higher Uptime and Lower Maintenance
- Reduced blade replacement cycles
- Longer shaft service life
- Less downtime due to shaft misalignment or vibration
Compatibility and Customization
- Blades can be tailored to different slit widths and coil types
- Shafts support a wide range of recoiling and slitting tensions
Compare with Common Blade Materials
| Material |
Hardness (HRC) |
Wear Resistance |
Typical Use |
| 9CrSi |
58–60 |
Medium |
Budget lines, low-load cuts |
| SKD11 |
60–62 |
High |
Precision slitting, non-ferrous metals |
| 42CrMo |
60–63 |
Very High |
High-speed, high-load, industrial lines |
Kinbenz selects 42CrMo as the balanced solution between performance, durability, and cost-effectiveness for most industrial clients.
Why Global Distributors Choose Kinbenz
As a full-service OEM manufacturer, Kinbenz supports:
- Custom-designed slitting lines
- High-precision shaft and blade manufacturing
- Global shipping and techinical support
- Locailized solutions for distributors and integrators
From metal service centers to transformer factories, our slitting systems are trusted worldwide.
Let's Build Your Slitting Line with Industrial Strength
If you are looking for a durable, customizable, and high-precision slitting line, Kinbenz has the expertise, machines, and materials to deliver.
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