Corrugated Slitter Grinding Wheels

Grinding Wheels for Corrugated Slitter Knives

Persistools diamond grinding wheels are designed specifically for sharpening tungsten carbide slitter knives used in corrugated board production lines.

Modern corrugated slitting systems often use an in-line sharpening system, allowing the circular slitter knife to be periodically or continuously sharpened while remaining installed on the machine.

This helps maintain a sharp cutting edge during long production runs and reduces the need to stop the line frequently for manual blade replacement or regrinding.

Designed for Tungsten Carbide Slitter Knives

Corrugated slitter knives are commonly manufactured from tungsten carbide because of its high wear resistance and ability to maintain a sharp cutting edge during continuous paperboard slitting.

Because tungsten carbide is extremely hard, conventional abrasive wheels are not suitable for efficient precision sharpening.

Persistools grinding wheels therefore use diamond abrasive with a resin-bond structure, providing the cutting ability required to sharpen carbide while maintaining a controlled and relatively forgiving grinding action.

The combination of diamond abrasive and resin bond helps achieve a balance between:

• Grinding efficiency
• Cutting-edge sharpness
• Surface finish
• Wheel wear
• Controlled grinding pressure
• Reduced risk of excessive damage to the carbide edge

In-Line Sharpening for Continuous Production

In corrugated board production, slitter knives operate continuously at high line speeds.

As the cutting edge gradually becomes dull, cutting resistance increases and the quality of the slit edge may deteriorate.

An automatic sharpening system periodically brings the grinding wheel into contact with the slitter knife to restore the cutting edge without removing the blade from the machine.

A suitable grinding wheel helps maintain:

• Consistent knife sharpness
• Clean corrugated board edges
• Stable slitting quality
• Reduced blade-changing frequency
• Longer continuous production cycles
• More predictable knife service life

Bearing and Non-Bearing Designs

Different corrugated slitting machines use different grinding-wheel mounting systems.

Persistools can supply:

Grinding Wheels with Bearing

The bearing is integrated into the grinding wheel assembly, allowing direct installation onto compatible sharpening units.

Grinding Wheels without Bearing

The wheel is supplied with a standard bore or mounting structure for use with machine-specific shafts, holders, or bearing assemblies.

Wheel diameter, thickness, bore, bearing specification, and abrasive structure can be adjusted according to the machine design.

Compatible with Different Corrugated Slitting Systems

Although the operating principle is similar across most corrugated slitting machines, grinding-wheel dimensions and mounting arrangements vary between equipment manufacturers and machine models.

Persistools can supply replacement grinding wheels according to:

• Original wheel dimensions
• Machine model
• Customer drawing
• Existing wheel sample
• Outer diameter
• Wheel thickness
• Bore size
• Bearing dimensions
• Required abrasive specification
• Slitter knife material

Standard and customized grinding wheels can therefore be supplied for different corrugated board slitting systems.