Power Hacksaw Blades
We deliver the specific power hacksaw blade that will lead to the optimal sawing result in accordance with your requirements!
Our recommendations for a long service life
When using GUHEMA power hacksaw blades, we recommend only a few, but very important rules concerning the workpiece and sawblade in order to achieve optimal cutting results:
- Never start sawing on a corner.
- Always saw with a running cooling system.
- Firmly clamp the workpiece so that it sits tightly and cannot be twisted.
- A new power hacksaw blade has to be run in. Reduce the cutting pressure by about 50% during the run-in period.
- Remove any mineral residue that may be present on the workpiece.
- Check the sawblade tension from time to time.
- Change your metal sawblade early! Best indicator: significant increase of cutting time.
- Maintain your metal sawblade in accordance with the manufacturer's instructions.
- Adjust the cutting pressure, the cutting speed and the tooth number to the workpiece. The following diagram as well as the table can serve orientation purposes.
- When using "Positive Teeth" and "Future", start with approx. 50% of the conventional pressure. When the sawblade has entered the material with its full width, the pressure has to be continuously increased without a buzzing sound becoming audible.
Rule of thumb:: Cutting speed / 2 x stroke distance (m) = number of strokes / min.
Cutting data
Cutting data recommendation for solid material in a normally annealed state for GUHEMA power hacksaw blades based on a stroke length of 200 mm.
Reduce cutting pressure for pipes and profiles depending on the wall thickness.
Material | TPI for material dimensions | Cutting speed | Blade / | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Designation | up to | above | Cutting pressure | depending on material strength | Grade | Tooth form | ||||
30 mm | 50 mm | 100 mm | 200 mm | 200 mm | Strokes / min | m / min | ||||
unalloyed steels / structural steels | ||||||||||
case hardening steels, such as | ||||||||||
St37-C10-C15 | 10-8 | 8-6 | 6-4 | 4-3 | 2-1,5 | low | 60-100 | 24-40 | Super HSS | normal |
St50-St60 | 10-8 | 8-6 | 6-4 | 4-3 | 2-1,5 | to medium | 60-100 | 24-40 | Super HSS | normal |
Quenched and tempered steels, such as | ||||||||||
C35-C45-C60 | 14-10 | 8-6 | 6-4 | 4-3 | 2 | medium | 55-80 | 22-32 | Super HSS | normal |
CK45-40MN4 | 14-10 | 8-6 | 6-4 | 4-3 | 2 | medium | 55-80 | 22-32 | Super HSS | normal |
34CrNiMo6-42CrMo4 | 14-10 | 8-6 | 6-4 | 4-3 | 2 | medium | 45-50 | 18-20 | Super HSS | normal |
Alloyed carbon steels, such as | ||||||||||
125Cr1-115CrV3-100CrMo5 | 14-10 | 8-6 | 6-4 | 4-3 | 2 | medium | 40-60 | 25-40 | Super HSS | normal |
X210Cr12 | 14-10 | 8-6 | 6-4 | 4-3 | 2 | medium | 25-40 | 10-16 | Super HSS | normal |
High-speed steels, such as | ||||||||||
ABC III-DMo 5 | 10-8 | 8-6 | 6-4 | 4-3 | 2 | medium | 25-40 | 10-16 | Super HSS | normal |
EMo 5 V 3-B18 | 14-10 | 8-6 | 6-4 | 4-3 | 2 | & higher | 25-35 | 10-14 | Brillant | normal |
Stainless steels, such as | ||||||||||
V2A-V4A | 14-10 | 8-6 | 6-4 | 4-3 | 2 | Special provision | 25-37 | 10-15 | Brillant | positive |
Special alloys, such as | ||||||||||
Hastelloy-Inconel | 10-8 | 8-6 | 6-4 | 4-3 | 2 | Special provision | 20-25 | 10-16 | Brillant | positive |
Nimonic-Titanium | 10-8 | 8-6 | 6-4 | 4-3 | 2 | Special provision | 10-13 | 4-5 | Brillant | positive |
AMPCO 18-20 | 10-8 | 8-6 | 6-4 | 4-3 | 2 | medium | 45-50 | 18-20 | Brillant | normal |
AMPCO 21-26 | 10-8 | 8-6 | 6-4 | 4-3 | 2 | medium | 40-45 | 16-18 | Brillant | normal |
Cast steel | 14-10 | 8-6 | 6-4 | 4-3 | 2 | medium | 50-70 | 20-28 | Super HSS | normal |
Cast iron | 14-10 | 8-6 | 6-4 | 4-3 | 2 | medium | 50-70 | 20-28 | Super HSS | normal |
Special bronzes | 10-8 | 8-6 | 6-4 | 4-3 | 2 | medium-high | 50-62 | 20-25 | Brillant | normal |
Non-ferrous metals | ||||||||||
Aluminium bronze brass | 8 | 6 | 4 | 3 | 2 | low | 80-120 | 32-48 | Super HSS | normal |
Application range for our GUHEMA Future metal hacksaw blades:
TPI | Description |
---|---|
8/10 | Material thicknesses of 8-30 mm |
6/8 | Material thicknesses of 20-50 mm |
4/6 | Material thicknesses of 50-100 mm |
3/4 | Material thicknesses of 70-150 mm |
2/3 | Material thicknesses over 150 mm |
Our recommendation for coarse tooth patterns (toothing)
Alternating cross-grinding
Use your advantage with our lateral ground-in rake you will get the cleanest cutting results. Premature teeth breaking is prevented by the ground-in rake and a lower burdening of sawblade and machine results from the chip disposal → both metal hacksaw blades and machine live longer.
We will gladly produce the lateral ground-in rake up to 6 TPI for you upon request. Contact us!

Are you having trouble sawing? – We've got the answers!
Teeth breaking?
Possible causes:
- Too low number of teeth selected. At least three teeth should be engaged simultaneously; this also applies to tubes and profiles.
- You started sawing on a corner.
- Workpiece has been clamped incorrectly.
Blade breaking?
Possible causes:
- The cutting channel has been pressed together and blocks the sawblade.
- Incorrect blade tension.
- Selected toothing is too coarse for the workpiece.
- Cutting pressure too high.
- Worn pilot bearings in the machine.
Premature dulling of the teeth?
Possible causes:
- Selected toothing is too fine
- Selected cutting speed too high for the workpiece.
- Too high pressure (increased tooth load) or too low pressure (teeth grinding on the workpiece instead of lifting a chip).
- Inadequate/misaligned sawblade cooling.
- Incorrect sawblade grade selected.
- No sawblade lifting during return travel.
Unwanted course of the sawblade?
Possible causes:
- Incorrect blade tension.
- Incorrect blade tension.
- Cutting pressure too high.
- Worn pilot bearings in the machine.
No matching answer?
Then talk to an expert! Contact our application consulting at +49 (0) 2191 88 67-20.