KM4000 Key Mill

The CLIMAX KM4000 Key Mill is a rugged, cost-effective solution for cutting precision keyways in industrial shafts. Designed with a 2-inch (50.8 mm) sideshift, this powerful key mill easily cuts wide keyways without requiring multiple cutter sizes, reducing tooling costs and setup time. Built for durability and accuracy, the KM4000 delivers smooth, consistent performance in demanding field or shop environments.

Highly versatile, the KM4000 key mill mounts anywhere along a shaft and at any angle, making it ideal for in-place machining applications. It accommodates shaft diameters from 4 to 24 inches (101.6 to 609.6 mm) and provides precise control for accurate keyway machining across a wide range of industries, including power generation, mining, marine, and heavy equipment maintenance.

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Specifications

SPECIFICATIONS	INCH	METRIC
Keyway Length	8″	203.2 mm
Keyway Width	3.25″ with 2″ sideshift	82.6 mm with 50.8 mm sideshift
Shaft Diameter	4 – 24″	101.6 – 609.6 mm
Power Option	Electric, Pneumatic, or Hydraulic	Electric, Pneumatic, or Hydraulic

Product Advantages

The KM4000 Portable Key Mill is a compact, rugged, and fully CE-compliant milling machine, designed for cutting extra-wide keyways, stress relief pockets, motor mount slots, and more.

COMPACT & POWERFUL

Compact design requires only 8.5 inches (215.9 mm) of shaft for clamping or 10.5 inches (266.7 mm) of shaft for clamping from an obstruction. It mounts on shafts ranging from 4 to 24 inches (101.6 to 609.6 mm) in diameter and can be positioned anywhere along the shaft, offering ultimate flexibility.

Universal-type motor and triple gear reduction provide ample torque for efficient cutting.

Anti-friction bearings are used throughout for enhanced performance and longevity.

Precisely cuts new keyways up to 3.25 inches (82.6 mm) wide and 7.88 inches (200.2 mm) long in one setup.

Two-inch (50.8 mm) lateral travel allows cutting wide pockets or slots with a single end mill.

EFFICIENT OPERATIONS WITH HIGH-QUALITY COMPONENTS

Self-centering and self-aligning contoured-base ensures your keyway is perfectly centered on the shaft.

Dovetail ways are machined for smooth movement in both longitudinal and transverse directions, ensuring precision.

Precision Acme thread leadscrew fitted with roller thrust bearings ensures smooth operation and accuracy.

Zeroing-type adjustable dial for precise control of cutter depth.

Permanently sealed lubrication allows operation at any angle, ensuring versatility.

Rapid longitudinal travel can be achieved with a drill motor for quick setups.

Motor is equipped with a soft start function and maintains speed as load increases, ensuring consistent performance.

SAFETY

CE and CSA certified and available worldwide! All KM4000 Key Mills are available for sale worldwide, including in the European Union and other locations where CE or CSA certification is required.

TECHNICAL DATA

0.75 inches (19.05 mm) is the standard spindle size for inch-machines

20 mm (0.79 inches) is the standard spindle size for metric machines.

For information on different machine variations, please contact your CLIMAX Sales Representative.