Unibor
Unibor MMS20 20mm x 25mm pneumatic accessory
A 20 mm by 25 mm HSS annular cutter for mild steel with a 1 inch cutting depth
- Economical HSS annular cutters for mild steel
- 20mm x 25mm metric dimensions for precision holes
- 1 inch depth of cut capability
- New Unibor brand pneumatic accessory
- Manufacturer direct shipping on orders over 75
Unibor MMS20 annular cutter
The Unibor MMS20 is an economical metric HSS annular cutter sized at 20 mm by 25 mm. It is designed for operators who need to cut softer metals and most mild steels in maintenance or fabrication work. The tool delivers a 1 inch depth of cut in a single pass. It suits workshops that value straightforward metric tooling for everyday drilling tasks.
Capacity and headroom
The cutter handles mild steel and softer alloys comfortably within its 1 inch cutting depth. It runs out when material hardness exceeds the range of standard high-speed steel or when deeper holes are required beyond the stated depth. Users working with hardened grades or thick plate will need a different cutter geometry or a carbide-tipped alternative. The 20 mm diameter provides a useful mid-range size for common bolt-hole patterns.
Metric HSS interface limits
The metric shank fits standard magnetic drill presses and compatible arbor systems without adapters. High-speed steel construction limits cutting speed and tool life compared with carbide when used in abrasive or high-temperature applications. The economical design prioritises cost per hole over maximum wear resistance in demanding production runs. Shank dimensions of 20 mm by 25 mm determine direct machine compatibility.
Highlights
- Economical HSS annular cutters for mild steel
- 20mm x 25mm metric dimensions for precision holes
- 1 inch depth of cut capability
- New Unibor brand pneumatic accessory
- Manufacturer direct shipping on orders over 75
Specifications
| Brand | UNIBOR |
|---|
Questions about this item
Will the 20mm x 25mm cutter fit the same arbor I use for smaller annular cutters?
The cutter has a 20mm diameter and 25mm length with a 1 inch depth of cut, so it fits standard arbors that accept those dimensions.
How can I verify the HSS cutter is cutting correctly after installation?
It should produce clean, consistent chips in mild steel and softer metals without excessive vibration or premature dulling.
Does the package include pilot pins or only the cutter body?
Only the HSS annular cutter is supplied; pilot pins and arbors must be purchased separately.
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