Description
Description
Weha 1-3/8 in (35 mm) CNC Diamond Core Bit — 1/2 Gas Thread
The Weha 1-3/8 in CNC core bit is sized for CNC stone-machining centers using the 1/2-gas thread interface. The 35 mm cutting diameter is a common drain-cut and cooktop-cutout size in granite, marble, and engineered-stone fabrication.
Features
- 1-3/8 in (35 mm) cutting diameter
- 1/2 gas thread — fits CNC stone-cutting spindles
- Diamond core bit for granite, marble, and engineered stone
- Suited to production CNC drilling and cutout work
| Property | Detail |
|---|---|
| Brand | Weha |
| Part Number | 40138 |
| Cutting Diameter | 1-3/8 in (35 mm) |
| Thread | 1/2 Gas |
| Bit Type | CNC diamond core bit |
| Unit Weight | 1.1 lb (0.5 kg) |
- Mount the bit on the CNC spindle per the machine specification.
- Set spindle speed and feed per the diamond bit manufacturer.
- Run with continuous water cooling at the cutting face.
- Ramp-down at the bottom of the cut to reduce exit chipping.
- Wear ANSI Z87 eye protection and a dust-rated respirator.
- Inspect the tool/accessory before each use; remove from service if cracks, deformation, or excessive wear are visible.
- Follow OSHA and local site safety procedures at all times.
- Wet cut only. Verify the chuck collet is clean before mounting.
Always wear appropriate PPE. Follow local safety regulations when using power tools or material-handling equipment.

