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Example of BT Type Installation Use the BGS-compatible guide shafts (shown on page 307) or d e7 guide shaft. This unit may be used for various lifting units and pusher guides. This unit may be positioned with the end of the mounting flange as the pilot as shown on the right. The clamping bolt fixing methods shown on the right are selectable. See the right table and select the proper bolt size. A B Service Range Seal Friction Fs / Metal Scraper Friction Ms Allowable Velocity 1.5No0.15kgfp 11.8No 1.2kgfp Parts No. Fs Ms BBT16 4.9No0.50kgfp 16.7No 1.7kgfp BBT50 3.9No0.40kgfp 16.7No 1.7kgfp BBT40 2.9No0.30kgfp 14.7No 1.5kgfp BBT30 2.5No0.25kgfp 14.7No 1.5kgfp BBT25 2.0No0.20kgfp 11.8No 1.2kgfp BBT20 Lubrication conditions Dry Periodical lubrication Allowable max velocity 0.5m/so30m/minp 1.0m/so60m/minp Remarks . Apply lubrication every 10 km of sliding Greasing is needed if the stroke is 1 meter or more or the allowable wear amount is small. BBT20 BBT25 BBT30 BBT40 BBT50 A M8 M8 M10 M12 M12 B M10 M10 M12 M16 M16 Attach bolt size Parts No. 320 Selection Guide Product Information Plastic Bearing Multi-layer Bearing Metallic Bearing Air Bearings Technical Guide Units Information Corporate Profi le