MAKITA B-31837 Ezychange Quick-Release Bi-Metal Hole Saw 140x40mm

MAKITA B-31837 Ezychange BiM HS Quick-Release Hole Saw Size 140x40mm

Specifications

- The MAKITA B-31837 hole saw is a Bi-Metal (BiM) hole saw for large hole drilling at 140 mm (approx. 5-1/2 inches), with a maximum usable cutting depth of 40 mm.

The body is made from high-speed bi-metal steel (HSS Bi-Metal) with teeth reinforced with 8% cobalt. The cobalt enhances strength and high heat resistance against friction when drilling hard materials such as thick metal and stainless steel, providing the holesaw with a long service life and consistently high performance.

A key feature is its compatibility with the Ezychange Quick-Change System, Makita's unique quick-release mechanism. This system is especially important for large hole saws (such as 140 mm) because:

Bit changes: Allows you to switch holesaw bits between different sizes quickly without using additional tools.

Core slug ejection: Allows you to easily push and eject large cut-out cores (core slugs) from the back of the bit.

The Progressive Tooth Geometry design provides smooth starting cuts, reduces vibration, and increases cutting speed.                                           Applications 

The MAKITA B-31837 hole saw is suitable for extra-large 140 mm hole drilling in a wide variety of materials:

Metal and stainless steel: Ideal for drilling steel, aluminum, copper, as well as stainless steel.

Wood: Hardwood, softwood, and medium-density fibreboard (MDF).

Plastic/PVC: Delivers fast and clean cuts.

Suitable for: Large HVAC ventilation duct installations, industrial piping, large piping systems, and applications requiring a 140 mm cutout.