Общий каталог PRECITOOL - страница 741

ln tete lc fofu Vlmin lmax Gauge blocks Product information Tolerance classes and their application areas The parallel gauge blocks according to DIN EN ISO 3650 are produced in different tolerance classes Calibra- Reference standard gauge blocks are used predominantly tion for gauge block tests with gauge block testers incalibration laboratory, in conjunction with a class K DKD calibration certificate. Toleranceclass 0Factory and reference standard in the calibration laboratoryor in the air-conditioned measuring room for setting orcalibrating gauges and measuring instruments Toleranceclass 1Commonly used reference standard for the testing of gaug-es and for the adjustment of measuring instruments. Use inthe measuring room and at the test station in production Gauge blocks of this class are used as a reference stand- Tolerance ard at inspection stations in production areas, for adjusting class 2 and calibration of measuring instruments and for adjust- ment and inspection of tools, devices and machines. Deviation limits of the length of the nominal dimension and tolerances for the deviation span (extract from DIN EN ISO 3650, table 4) Tolerance class 0 Tolerance class 1 Tolerance class 2 Nominal sizerange Deviation limitsof the length of thenominal size atTolerance fordeviation spanDeviation limitsof the length of thenominal size atTolerance fordeviation spanDeviation limitsof the length of thenominal size atTolerance fordeviation span  any point± teaboveto tvµm any point± teµm ± teµm any point ± teµm tvµm - 10 0.12 0.10 0.20 0.16 0.45 0.30 10 25 0.14 0.10 0.30 0.16 0.60 0.30 25 50 0.20 0.10 0.40 0.18 0.80 0.30 50 75 0.25 0.12 0.50 0.18 1.00 0.35 75 100 0.30 0.12 0.60 0.20 1.20 0.35 100 150 0.40 0.14 0.80 0.20 1.60 0.40 150 200 0.50 0.16 1.00 0.25 2.00 0.40 200 250 0.60 0.16 1.20 0.25 2.40 0.45 250 300 0.70 0.18 1.40 0.25 2.80 0.50 300 400 0.90 0.20 1.80 0.30 3.60 0.50 400 500 1.10 0.25 2.20 0.35 4.40 0.60 500 600 1.30 0.25 2.60 0.40 5.00 0.70 600 700 1.50 0.30 3.00 0.45 6.00 0.70 700 800 1.70 0.30 3.40 0.50 6.50 0.80 800 900 1.90 0.35 3.80 0.50 7.50 0.90 900 1,000 2.00 0.40 4.20 0.60 8.00 1.00 Comparison table on material properties Property Ceramics Carbide Steel Linear expansion coefficient 9.5 × 10-E-6 / K 4.23 × 10-E-6 / K 11.5 × 10-E-6 / K Thermal conductivity very low low high Wear resistance excellent good less well Wringing characteristics acceptable excellent excellent Geometric fidelity excellent excellent acceptable at proper handling Corrosion resistance excellent good less well Mechanic solidity good good very good 38/736 www.precitool.de