Unibor
Unibor 28144 1.3/8x3/16 Speedcut Carbide Tipped Hole Saw Impact Shank pneumatic accessory
Carbide-tipped Speedcut hole saw with impact shank cuts 1.3/8-inch holes in metal and wood
- 1-3/8 in cutting diameter for large holes
- 3/16 in cutting depth for shallow bores
- Carbide-tipped teeth cut hard materials
- Impact shank handles high-torque drivers
- Speedcut design speeds material removal
Unibor 28144 Speedcut Hole Saw
The Unibor 28144 is a carbide-tipped hole saw built for impact-rated shanks. It suits maintenance crews and fabricators who need fast, clean holes in metal using pneumatic or cordless impact drivers. The Speedcut tooth geometry reduces snagging on breakthrough. This accessory ships direct from the manufacturer for orders meeting the 75 threshold.
Sustained cutting behaviour
Carbide tips resist heat buildup better than bi-metal teeth during prolonged contact with steel plate. The 1.3 mm wall thickness helps dissipate heat without warping the saw body. Consistent feed pressure keeps the teeth engaged and prevents chatter that dulls the cutting edges. Operators should pause periodically to clear chips and allow the tool to cool.
Impact shank interface limits
The impact-rated shank transmits high torque impulses directly to the saw without a separate arbor. Maximum rotational speed is governed by the driver's output and the material thickness. Excessive side load can snap the shank or strip the drive flats. The 16 mm cutting depth defines the practical limit for through-holes in a single pass.
Highlights
- 1-3/8 in cutting diameter for large holes
- 3/16 in cutting depth for shallow bores
- Carbide-tipped teeth cut hard materials
- Impact shank handles high-torque drivers
- Speedcut design speeds material removal
Specifications
| Brand | UNIBOR |
|---|
Questions about this item
Does the 1.3/8x3/16 Speedcut carbide-tipped hole saw generate excessive heat or vibration during prolonged pneumatic impact use?
The carbide-tipped design and Speedcut geometry are engineered to reduce heat buildup and vibration when driven by pneumatic impact tools, allowing sustained cutting through steel without rapid dulling.
What pneumatic impact driver specifications are required to operate the 28144 hole saw with its impact shank?
The impact shank fits standard pneumatic impact drivers; the tool must deliver sufficient torque and impact rate for 1.3/8 inch diameter holes in metal, with a secure chuck or adapter for the shank.
Will the 28144 Speedcut hole saw work effectively on older pneumatic impact drivers that lack variable speed control?
Yes, the carbide-tipped teeth and impact-rated shank are designed for consistent performance on both older fixed-speed and newer variable-speed pneumatic impact drivers.
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