Facom Automatic Centre Punch - 257.GPB
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Product Information
Full details
The Facom 257.GPB is an essential precision tool designed for metalworkers, engineers, and fabricators who require accurate marking before drilling or machining. Its primary benefit is the adjustable impact force, allowing users to precisely control the depth of the mark across different materials, though users should note the 16mm shank requires a steady hand to maintain consistent placement on smaller components.
All features
| Model Part Number | 257.GPB |
|---|---|
| Brand | Facom |
Extended Product Information
FAQs
Does this tool require a hammer?
No, the Facom 257.GPB is fully automatic and triggers via internal spring pressure when pushed against a workpiece.
Can I replace the tip if it becomes dull?
The tip is hardened to 55-58 HRc for durability, but should it eventually dull, contact an authorized Facom dealer for replacement parts.
What is the primary material application?
It is best suited for marking steel, aluminum, brass, and other common industrial metals.
Is the grip resistant to shop chemicals?
The comfort grip is designed for industrial use and is resistant to typical workshop environments, though you should wipe it clean after contact with solvents.
What is the shank diameter?
The shank diameter of this model is 16.0 mm.
Troubleshooting
The punch fails to strike automatically.
Ensure the internal shaft is clean of metal shavings or debris and add a drop of light machine oil to the sliding mechanism.
The mark is too shallow on hard steel.
Adjust the tension setting higher toward the 25 kg maximum to increase the impact force.
Pros and Cons
Pros
- Fully adjustable impact force for versatile material handling
- Ergonomic grip significantly reduces vibration feedback
- High hardness rating ensures longevity and point retention
- Sturdy 16mm diameter build quality
- Requires no external tools to operate
Cons
- Not suitable for extremely delicate or thin materials if the minimum setting is too aggressive
- Requires periodic maintenance to the internal spring mechanism
- More substantial weight due to the robust shank design
Setup, Compatibility & Care
To set the impact force, rotate the top cap of the punch to the desired tension setting within the 15-25 kg range. No complex calibration is needed for standard operation. Maintenance is straightforward: keep the tip free of debris and ensure the sliding shaft is lightly lubricated to prevent sticking. When not in use, store the tool in a dry environment to maintain the integrity of the spring and tip hardness. Avoid using the tool as a pry bar or general-purpose hammer, as this can misalign the internal striking mechanism.