Conserves energy in hydraulic operation, as hydraulic doesn’t work during cutting
Hydraulic oil has very long useful life
Power pack runs cool, minimal energy losses due to heating
3. Cutting pressure and feed rate control
A life time, maintenance free Hydraulic Mechanical Valve (HMV) system constantly arbitrates between the set maximal down-force and feed rate which results in
Protection of blade against overload or operators error
Automatically increases or decreases down-feed with respect to geometry of piece being cut or changes in material
Protection of the blade from any undue cutting pressures thus
Significantly prolonged tool life
Optimal performance of blade
Improved overall cutting time and squareness of the cut until end of useful life of blade
4. Saw Bed: ‘The strong foundation of PETRA machines’
Provides support to the columns very near to the Centre of gravity which makes very stable without being heavy
Integrated enclosure for the chip conveyor at lowest point, hydraulic pack and electronic cabinet makes it most compact saw bed
Entire bed is welded from laser cut sheet metal and protected with powder painting
5. Large diameter wheels
Large enough wheels guaranty that properly welded blade will never break before it dulls out
Steel wheels are plasma cut to the size, precisely machined and balanced
Grooves on the perimeter give a perfect grip to the blade
6. Blade guide and tensioning system
Heavy duty, long lasting, carbide blade guides are set in factory, no gap setting or adjustment is required while changing the blade
Very simple, straightforward change of blade takes less then 5 minutes
Automatic hydraulic blade tensioning to factory preset pressure value which can also be adjusted by user
7. Hydraulic power pack
An efficient and energy conserving design, the hydraulics is totally turned off during cutting operation
Practically oil is always at the temperature of working environment hence no change in the viscosity, no need to cool
While only 10 liters of oil is used there is also no need to change oil for years which makes PETRA Band saws more environment friendly
Significant savings in electric energy and extremely low maintenance cost
8. Power transmission
A very efficient power transmission system thru helical gear box on most models
Axial force free design with heavy duty main bearing on driver wheel
9. Electronics and PLC display
User friendly HMI color/touch screen display with real time information
Siemens 7-1200 PLC
All electronics components are professional grade components available worldwide
Very clean layout in electronic cabinet allows for easy trouble shooting and maintenance
10. Small foot print
All PETRA Band saw machines have one of the smallest foot prints in respective categories of band saw machines in the industry
Compact design
Customer can make best utilization of his shop floor area
Contact information
PETRA Stroji d.o.o.
Tržaška cesta 133
1000 Ljubljana, Slovenia
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