Description With solid steel housing With high collar Very smooth running Housing in bright metal Galvanized cover Features Balls made from antifriction bearing steel 1.3505 Without felt seal Technical data Technical data Size 12 C N 250 C0 N 700 vmax 1) m/s 2 m kg 0.027 Operating conditions Size 12 Admissible operating temperature (min ... max) 2) -30 °C ... +100 °C 1) In case of prolonged periods of use at speeds above 1 m/s, an increase in temperature and reduction in service life needs to be reckoned with depending on the load. 2) At temperatures above 100 °C, only bright metal load balls without a felt seal should be used. Make allowance for reduction in load capacity. Use high-temperature lubricant! Follow the manufacturer’s instructions! The existing lubricant oil may have to be washed out. At temperatures above 100 °C, only bright metal ball transfer units without a felt seal should be used. Note the reduction in load capacity! Use high-temperature lubricant! Follow the manufacturer’s instructions! The existing lubricant oil may have to be washed out. Temperature factor Temperature (°C) Temperature factor ft 125 0,9 150 0,8 175 0,7 200 0,5 The load capacity must be multiplied by the temperature factor. Legend Symbol Description Unit Picture C Dynamic load capacity N C0 Static load capacity N vmax Conveying speed m/s m Mass kg Technical data Fields of application Applications General-purpose machines Feed tables for sheet-metal working machines Fixtures for press brakes Feed devices for machining centers Drilling tables and motor-driven supporting tables Assembly aids in the manufacture of large engines and motors Construction of special-purpose machines Aerospace industry Beverages and stone-processing industries Not suitable for use under water Conveyor systems Ball transfer tables, turntables and switches for sorting and distribution systems Crossover sections of continuous conveyors Baggage sorting systems at airports Transport of steel tubes and pipes Lifting platforms Dimensions Dimensions Size dw D Tolerance for D D1 Tolerance for D1 h h1 Tolerance for h1 H Tolerance for H a Tolerance for a mm mm mm mm mm mm mm mm mm cm mm mm 12 12 20 ± 0.1 17.5 ± 0.1 3 10.5 ± 0.1 16.5 ± 0.2 7 ± 0.1 1) with tolerance ring 2) Gluing in Installation dimensions Size with tolerance ring Gluing in Part number 1) D2 Tolerance for D2 DE Tolerance for DE b Tolerance for b DE Tolerance for DE D2 Tolerance for D2 b Tolerance for b Tolerance ring mm mm mm mm mm mm mm mm mm mm mm mm 12 R081001951 17.8 + 0.5 21.7 + 0.2 7 ± 0.1 20.15 + 0.2 17.8 + 0.5 7 ± 0.1 1) made of corrosion-resistant steel 1.4310 Mounting Assembling the ball transfer units with tolerance ring Ball Transfer Unit Installation Examples Certification Directives and standards Safety Instructions Notes Ordering codes Ordering code Size Part number Short product name CAD data Buy 12 R053370200 KUM-A12-HB-OFK Explanatory example of the short product name KUM-A12-HB-OFK (R053370200) KUM A 12 HB OFK
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