Kemmler Main Catalog Precision Tools Page 862
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High precision collet chucks KPS-system The high precision collet chuck (KPS) is the alternative to hydraulic expansion chucks and shrink chucks. High flexibility due to interchangeable collets (precision collets System KPS available from Ø 0.5 up to 16 mm). High clamping forces and concentricity lead to top surfaces and longer tool life. Plain clamping nut without grooves for high speed machining. Slim version. Tool shanks: Cylindrical DIN 1835-1 form A/DIN 6535 form HA, tolerance h8. Dedicated clamping size on the nominal diameter. Collets available in steps of 0.5 mm. Run-out: Maximum runout when measured at a gauge projection of 4×d in relation to the external taper is 5 μm. Balancing: Fine balancing is standard (G 2.5 30,000 min–1). Note: KPS-system chucks are delivered as standard without stop end screws. The use of stop end screws is not recommended at high spindle speeds, e.g. over 10,000 rpm. Collet chuck size Capacity d mm D L1 M D16 1 – 10 27 19 M20 × 1 D24 2 – 16 36 22 M28 × 1 S Max. tightening torque D type clamping system max. Rpm* 24 40 Nm 60,000 32 70 Nm 40,000 * The maximum rpm for holders equipped with this clamping system is often restricted by the holder‘s back-end taper type and size. 13 13.65 K43
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