Bernstein Screwdrivers, torque & bits brochure Page 18
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[email protected] ADJUSTMENT SCREWDRIVERS MADE OF ZIRCONIA/CERAMIC Adjustment tools for ESD areas. Ceramic bits meets the highest demands due to their excellent mechanical and thermal properties. The zirconium oxide material‘s hardness and breaking strength enables the manufacture and use of even the smallest dimensions with the highest possible resistance to wear. In addition to standard blades, we also manufacture special shapes at the customer‘s request. Ceramic – the long-lasting material Zirconium oxide is a highly wear-resistant ceramic (zirconium), tetragonal ZrO2, Y2O3 and partially stabilised. Physical properties at room temperature: Flexural strength 800 N/mm², elastic modulus 2x105 N/mm² Density 6.05 g/cm³, hardness 1350HV, field of application up to 800 °C, coefficient of thermal expansion 10 x 10-6 K-1 Thermal conductivity 2 W/mK, insulating electrical resistance. Ceramic adjustment screwdriver SLOT ESD handle with rotating cap Dissipative between 106 and 109 ohm Total length: 100 mm, weight: 10 g HEX CROSS RECESS The following types are available, specifications in mm: Art.-No. Symbol Size / drive Blade length Blade width Blade thickness Blade diameter Handle length Total length Weight in g 1-851 — 20 0.9 0.3 3 80 100 10 1-852 — 20 1.3 0.3 3 80 100 10 1-853 — 20 1.5 0.3 3 80 100 10 1-854 — 20 1.8 0.3 3 80 100 10 1-855 — 20 1.95 0.35 3 80 100 10 1-856 — 20 2.5 0.7 3 80 100 10 1-857 — 20 3 0.3 3 80 100 10 1-858 — 20 3 0.7 3 80 100 10 1-861 1,95 20 — — 3 80 100 10 1-862 2,45 20 — — 3 80 100 10 1-864 PH000 20 — — 3 80 100 10 1-865 PH00 20 — — 3 80 100 10 1-866 PH0 20 — — 3 80 100 10 1-867 — 20 2.4 0.8 3 80 100 10 1-750 18
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