Bernardo general catalog metal Page 478
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Sanding machines Screw tab grinder The screw tap grinders STG 20 and STG 42 are ideal for grinding of HSS and carbide screw taps. The adjustable centre point of 5° to 30° make these models universal for screw taps with 2, 3 and 4 chip flutes. STG 20 STG 42 • Portable screw tap grinder for grinding of screw taps with 2, 3 and 4 chip flutes • Rotor features precise ball bearings to guarantee smooth operation • Suitable for grinding of HSS or carbide screw taps • Quick and precise working results through the easy handling • 2 models available, either from M5 – M20 or M16 – M42 Pre-setting Grinding the broached length Grinding the cutting edge Grinding the front surface Standard accessories: Technical data STG 20 STG 42 Grinding area Point angle Speed Motor power Voltage Length Width Height Weight approx. Art. no. M5 – M20 5° - 30° 4800 rpm 0,16 kW 230 V 320 mm 235 mm 265 mm 14 kg 05-1628 M16 - M42 5° - 30° 4800 rpm 0,25 kW 230 V 400 mm 300 mm 310 mm 24 kg 05-1629 476 • Grinding wheel CBN • Collets ER 20, 5 – 14 mm, 6 pcs. (STG 20) (5 / 7 / 8 / 9 / 13 / 14 mm) • Collets ER 40, 13 – 30 mm, 9 pcs. (STG 42) (13 / 14 / 16 / 18 / 20 / 23 / 25 / 28 / 30 mm) • Collet holder Optional accessories: Grinding wheel CBN for STG 20 Diamond grinding wheel SBC for STG 20 Grinding wheel CBN for STG 42 Diamond grinding wheel SBC for STG 42 Art. no. excl. VAT 05-1730 05-1731 05-1732 05-1733
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