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►PE-TRA Bandsaw Machine Features

Saw Bed: Designed & engineered to perfection with vision & experience, Petra Bandsaw's Fabricated steel base is manufactured from Laser Cut Sheet Metal. All bed parts are pressed & welded neatly. Every care is taken to make it rigid by supporting it with beam at required points. Column base (very near to centre of gravity, makes it most stable machine) machined & milled accurately for the lifelong error free performance.

Columns: Cold drawn solid columns precisely machined for accurate results & speeds. These square columns give better stability while cutting, because of its perfect structural design. Linear guides are mounted outward face of the columns enhances cutting feeds to the recognition levels. A Rack Pinion rail on the rear face eliminates both the influence of centre of gravity shift & cutting forces, which ultimately improves the overall performance of the machine.

Power transmission: High efficiency power transmission to the saw thru Helical Drive, makes it the most efficient machine in this catagory. It is integrated with an Inverter for infinitely variable blade speeds.

Blade tensioning: Tensioning is powered by hydraulic with easy to operate controls. Allows for very quick and convenient blade change A state of art hydraulic blade tensioning arrangement, calibrated for the required tension in the blade & hence avoiding undesirable stresses in the blade, which improves the tool life. Its well engineered design makes it possible to align the wheels easily if needed.

Blade guide system: Guides provide flat carbide inserts. Both blade guides are straight having no cantilever joints, correctly aligned with the cutting line & hence guiding the blade to cut straight. Also blade guide slot is pre-designed & defined which allows the smooth blade movement, eliminating vibrations & achieves taper free cuts. No gap setting required for the carbide tip, while inserting the blade.The carbide tips & gap is per-designed & for life.

Wire Brush: Motorized & shaft mounted.Hence no coupling & without maintainence

Wheel Diameter: 500 mm, among the biggest in its category in the world. VERY important for the durability of blades. Solid Driver & driven wheels are plasma cut to the size & precisely machined grooves at the surface gives required grip to the blade.

Hydraulics: Powered by 0,75 kW, 6 l/min pump, Kladivar-Parker. During cutting the hydraulic system is idle which keeps the oil temperature at environmental level at all times and saves electricity. An efficient hydraulic system with 24V solenoid valves having LED results in easy diagnose of the problem at first hand, if occurs. Also it is saving the energy as pump goes off during feed & therefore maintaining oil quality for the longer periods.

Front discharge table: For easy handling of cut pieces a solid plate table, 400 mm in length, is bolted on to machine base in front of the front clamping vise. It is fully coolant panned to return coolant to the machine.

Cutting Pressure / Feed rate: The maximal cutting force is adjustable and automatically maintained at set level with built-in highly reliable, maintenance-free hydro-mechanical control system. The feed rate is adjustable through a front-end operated valve on the fixed guiding arm. Operator cannot damage the blade under normal operation. A well engineered Hydraulic Feeding system with a flexibility to adjust cutting force for a particular cutting application makes it an ideal machine with an enhanced tool life. This feature protects the tool from undue cutting pressures & saves the costly tool.

Feed stroke: 430mm, which is catering most of the jobs. If cut lengths are more than 430mm, machine has the facility of Multi-Indexing.

Chip Conveyor: Chips are removed from cutting area to easy-to-empty container with automated chip conveyor Chips dry out returning the coolant to the system before released to chip tank. Coolant and chips are fully separated.

PLC: System control is realized with SIEMENS S7-200 PLC. -Real time feed rate is displayed -Real time Cutting rates is displayed

Panel: Clear layout and orderly marked wiring facilitates user friendly servicing.

Rear or Shuttle vise: Its a neatly designed Shuttle vise and table.All movable items are fully shielded for the safety. Gap between the rollers are covered, which prevent chips and small job ends to fall inside. Also it protects the hard chrome plated guide bars from chips etc, on which shuttle moves.