372 1 2 A B 3 C 4 a b c BIG BORE® BB-FZA2G Front-end pneumatic 6-jaw sequence chuck EXTRA large through-hole Ø 275 - 390 mm Application/customer benefits • EXTRA long axial and radial stroke for centering jaws • Adjustability of the axial centering position for pipe threading • EXTRA long rapid and clamping stroke (1 1/2“ total) for compensating jaws • Stroke control for centering jaws • Stroke control for each compensating jaw • Pressure control Technical features • 3+3 jaw air chuck with 3 integrated centering jaws and 3 compensating jaws • Integrated centering jaws move axially forward to center the pipe exactly at the area to be threaded • For external clamping only • Fully automatic sequence is programmable • EXTRA long jaw stroke • Possibility to adjust the axial centering position through the radial position of the centering jaws Pipe loading with open chuck. Short stroke (a) Axial centering position and radial position of the top jaws. Axial centering position and radial position of the top jaws. Axial centering position and radial position of the top jaws. Mid stroke (b) Max stroke (c) Machining of bent pipe with chuck with integrated centering jaws: Adjustability of the axial centering position Centering jaws move forward axially to center the pipe at the threading area. By changing the radial position of the top jaws, the axial centering position can be changed. The axial centering position is dependent from the radial adjustment of the top jaws. Compensating jaws pick up the pipe at the centered position and clamp it with the clamping force necessary for machining. Centering jaws open and retract back axially into the chuck body. The pipe can now be machined. a1 radial b1 radial c1 radial a axial b axial c axial ■ Chuck size 740 - 920 ■ 3 integrated centering jaws and 3 compensating jaws INCH SERRATION BIS Specials Website: www.bisspecials.com Email: info@bisspecials.com Tel: (0031) 0313 482566 Website: www.bisspecials.com Email: info@bisspecials.com Tel: (0031) 0313 482566
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