/
Attachments
/
Rotors
/
Rotors
System K 2.2 m Milling Drum (18 mm spacing)
System K 2.2 m Milling Drum (18 mm spacing)
Overview
The System K course milling rotor with 18 mm bit spacing is designed for surface removal or complete removal of road surfaces with a rougher finish at depths up to 330 mm (13 in). A durable, high-performance design with efficient material flow and an excellent cutting pattern maximizes milling production.
Specifications
Units:
| Milling Width | — |
| Tool Spacing | — |
| Drum Diameter at Tips | — |
Benefits & Features
Toolholder Design
- The toolholder features multiple bit removal methods and a unique friction ring design to secure it to the rotor, yielding faster replacement and reduced downtime for rotor maintenance.
- A taper and friction ring design secures the toolholders to the rotor without a retaining pin, bolt or setscrew, speeding up replacement time by up to 50% and eliminating the need for fasteners or torqueing
- 20 mm wear collar is 66% longer than System G toolholders
- An anti-rotating toolholder design ensures proper position to prevent wear on the blocks and holders
- Water can penetrate through the toolholder radial access hole to aid tooth rotation for uniform bit wear
- Toolholders are available to accommodate bits with 20 mm, 22 mm and 25 mm shank size bits for various applications
Easy Bit Removal
- Multiple methods for easy bit removal:
- Radial access hole
- Chisel points
- Rear access through the block
Efficient Material Flow
- An optimized spiral angle increases speed of material flow from the outside to the center for efficient material extraction
- Blocks are specifically designed for each side of the rotor and arranged for optimized cutting effort and efficient material flow
- Kicker paddles are dimensioned and tested to ensure maximum ejection of material from the center of the cutting chamber to the conveyor
- The rotor design reduces component wear by quickly removing material from the cutting chamber, reducing drag, improving overall machine efficiency and lowering fuel consumption
November 5, 2025
Specifications
Units:
| Milling Width | — |
| Tool Spacing | — |
| Drum Diameter at Tips | — |
| Milling Depth (max) | — |
| Number of Bits | 162 |
| PN# of Rotor Gp with Coolant and Tools (Factory Installed) | 559-1535 |
| PN# of Rotor Gp with Bits (Field installed) | 558-6381 |
Benefits & Features
Toolholder Design
- The toolholder features multiple bit removal methods and a unique friction ring design to secure it to the rotor, yielding faster replacement and reduced downtime for rotor maintenance.
- A taper and friction ring design secures the toolholders to the rotor without a retaining pin, bolt or setscrew, speeding up replacement time by up to 50% and eliminating the need for fasteners or torqueing
- 20 mm wear collar is 66% longer than System G toolholders
- An anti-rotating toolholder design ensures proper position to prevent wear on the blocks and holders
- Water can penetrate through the toolholder radial access hole to aid tooth rotation for uniform bit wear
- Toolholders are available to accommodate bits with 20 mm, 22 mm and 25 mm shank size bits for various applications
Easy Bit Removal
- Multiple methods for easy bit removal:
- Radial access hole
- Chisel points
- Rear access through the block
Efficient Material Flow
- An optimized spiral angle increases speed of material flow from the outside to the center for efficient material extraction
- Blocks are specifically designed for each side of the rotor and arranged for optimized cutting effort and efficient material flow
- Kicker paddles are dimensioned and tested to ensure maximum ejection of material from the center of the cutting chamber to the conveyor
- The rotor design reduces component wear by quickly removing material from the cutting chamber, reducing drag, improving overall machine efficiency and lowering fuel consumption
Durable Design
- Built to withstand demanding applications and extend rotor life
- Large heat-treated surface areas on the toolholder protect the base block from undesired wear
- Components are manufactured with abrasion-resistant, high-strength alloys to withstand the toughest applications
- High-strength components stand up to the demands of high-power applications
- Toolholder and base block designs are optimized to minimize stresses and provide lasting durability
Maintenance
- Maintaining bits and toolholders is key to achieving maximum productivity, and System K rotors are designed to simplify maintenance and get you back to work faster.
- Dual-retention toolholders eliminate the need for fasteners, reducing replacement time by up to 50%
- Bit removal can be done through multiple methods
- A variety of removal tools specifically for System K rotors help you replace bits and toolholders quickly
Data not available.
Related Products
Units:
Cold Planer
Cat cold planers remove worn or deteriorated pavement to a specified grade and slope and leave a textured surface that can be immediately opened to traffic or overlayed with new asphalt.
| Model | Milling Width | ||
|---|---|---|---|
| PM622 | — | — | — |