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Durability Test Data / To Prevent Malfunctioning Stroke 500mm STF28 GR28-1200 W=2,940N @o 300kgfp 1,200mm Stroke 600mm BGS25-800 W=196N o 20kgfp BTCA25-150 BTC30 Stroke 500mm BGS30-1000 BH30 W=735N @o 75kgfp 800mm Stroke 460mm BTF40 BH40 BGS40-800 W=2,940N @ {300kgf} W=2,940No 300kgfp Stroke 460mm BTU30-500 Durability Test Data Testing conditions Type: STF28 four shift tables GR28-1200 dual-axis Load: 2,940N {300kgf} Velocity: 0.33m/s {20m/min} Stroke: 500mm Sliding distance: 1,000km Result Wear amount on liner: 0.025mm on rail: 0.005mm Coefficient of friction: 0.08`0.14 Temperature of friction: 32`42 Testing conditions Type: BTCA25-150 one shift table BGS25-800 dual-axis Load: 196N {20kgf} Velocity: 0.50m/s {30m/min} Stroke: 600mm Sliding distance: 1,000km Result Wear amount on bushing: 0.055mm on shaft: 0.008mm Coefficient of friction: 0.20`0.28 Testing conditions Type: BTC30 four shift tables BGS30-1000 dual-axis Load: 735N {75kgf} Moment: 323NEm {33kgfEm} Velocity: 0.25m/s {15m/min} Stroke: 500mm Sliding distance: 300km (300000 cycles) Result Wear amount on bushing: 0.032mm on shaft: 0.006mm Coefficient of friction: 0.12`0.30 Testing conditions Type: BTU30-500 Load: 2,940N {300kgf} Velocity: 0.42m/s {25m/min} Stroke: 460mm Sliding distance: 730 (800000 cycles) Result Wear amount on bushing: 0.023mm on shaft: 0.012mm Coefficient of friction: 0.16`0.20 Testing conditions Type: BTF40 four shift tables BGS40-800 dual-axis Load: 2,940N {300kgf} Velocity: 0.42m/s {25m/min} Stroke: 460mm Sliding distance: 1,000km Result Wear amount on bushing: 0.035mm on shaft: 0.008mm Coefficient of friction: 0.10`0.25 Temperature of friction: 42`85 BTU Type S Type BA Type BC Type BF Type 323Selection Guide Product Air Bearings Metallic Bearing Multi-layer Bearing Plastic Bearing Information Technical Corporate Profi le Information Slide Shifter