FRD Furukawa reserves right to change specifications without prior notice. PRD FURUKRUJR ROCK DRILL CO..LTD. 5-3, 1-chome, Nihonbashi, Chuo-ku, Tokyo 103-0027, Japan Tel +81-3-3231-6982 Fax +81-3-3231-6994 Rock Drilling Tools-E1905-F3 Printed in Japan

Explanations of part name (shape code) Kind of bit and application range Application range Application range Hard rock and ultra-hard rock layers. Effective in a rock layer which causes wear in a great degree. The tip end is sharp and so the drilling efficiency is excellent. This bit demonstrates its ability especially in limestone. Medium hard rock and hard rock layers. Reverse blow button bit Used in layers including few fracture zones. Reverse blow is proper to enhance the cutting discharge efficiency. Soft rock and medium hard rock layers. Higher drilling speed can be obtained compared with...

Part No. (Order code) Part name (Shape code)

Part name (Shape code) Sleeve Semi-bridge

Grinding of bit Button bit Extension rod Sleeve Shank rod As drilling continues, the tips of bits are flattened. Then, not only the drilling speed is lower but also the broken earlier than usual or can cause drifter malfunctions. To prevent these failure, it is necessary to grind the bits at a proper interval. Button bit FF:Flat face Gauge tip : 8 pcs ■ Time to grind the button bit (1) When the tips are worn to flat and its wear width are 1/3 ~ 1/2 of the tip diameter. (2) When the reaming clearance is extremely reduced to 0.5 mm or less. (3) When a netlike crack (snakeskin) has occurred at the...

HD612 (with Dual damper)

HD615 (with Dual damper)

Drifter model Shank rod HD836 HD836 RP Part No. 16.02 16.61 Overseas Subsidiaries EUROPE(N ▲ Frankfurt 21.03 USA (Ohio) ▲ South Carolina SHANGHAI (China) 21.78 LATIN AMERICA (Panama) AFRICA, EUROPE, RUSSIA and CIS Website: www.frd.eu FURUKAWA ROCK DRILL EUROPE B.V. Address Proostwetering 29, 3543 AB Utrecht CANADA, USA, and CENTRAL AMERICA FURUKAWA ROCK DRILL USA Website: www.frdusa.com Address 705 Lake Street, Kent, OH 44240-0017 USA CHINA FURUKAWA ROCK DRILL (SHANGHAI) CO., LTD. Website: www.frds.cn Address No.125 Yingjin Rd., Jinhui Town, Fengxian District, Shanghai, China TEL +86-21-5748-6636...