Page 1224 - Benma | Blue book 5.0

Flanges and hollowing rings Tel. +41 44 736 63 63 • Fax +41 44 736 63 00 • sales@brw.ch
250800 Cast flange raw
For lathe chucks, unprocessed raw mixture.
We recommend performing flanging work only on the lathe for which the flange is destined (con-
centricity precision).
Order ID D1 for chuck d D2 h L
mm mm mm mm mm
250800.0100 92 80 / 85 20 56 15 47
250800.0200 120 100 / 110 25 80 20 58
250800.0300 135 125 25 80 20 58
250800.0400 170 160 30 80 20 58
250800.0500 210 200 40 92 22 66
250800.0600 260 250 50 105 25 92

250820 Short tapered flange
DIN 55029, with stud bolt for Camlock
Made of steel, finished on the spindle side, faced on the chuck side. Oversize at least 0.5 mm.
Other flanges available upon request.
Order ID Ø Short cone size B F D C Number of bolts
mm mm mm mm mm
250820.0100 145 4 63.525 82.55 26 25 3
250820.0200 165 4 63.525 82.55 30 26 3
250820.0300 205 4 63.525 82.55 45 30 3
250820.0400 205 5 82.575 104.8 45 30 6
250820.0500 252 5 82.575 104.8 50 40 6
250820.0600 315 5 82.575 104.8 55 40 6
250820.0700 205 6 106.39 133.4 45 30 6
250820.0800 252 6 106.39 133.4 50 40 6
250820.0900 315 6 106.39 133.4 55 40 6
250820.1000 252 8 139.735 171.4 50 40 6
250820.1100 315 8 139.735 171.4 55 40 6

250840 Stud bolt
For DIN 55029.
Order ID Size B A C L
mm mm mm mm
250840.0100 3“ M10 x 1 14.25 19 54
250840.0200 4“ M10 x 1 15.85 19 55
250840.0300 4“ M12 x 1 15.85 22 65
250840.0400 5“ M12 x 1 19 22 65
250840.0500 6“ M16 x 1.5 22.2 27 76
250840.0600 8“ M20 x 1.5 25.4 31 86

250920 Hollowing ring
For hollowing out soft, unhardened and also extended jaws and for internally grinding hardened
jaws. Reversible and quick-adjusting jaws for large areas leave the inside space free for working.
Of course, it is also suitable for inside clamping. The ring is mounted over the jaw screw holes on
the chuck.
Designs:
Size 0: light design
Order ID Size for chuck Clamping Clamping area inside Ring Ø outside Ring Ø inside
area out-
side
mm mm mm mm
250920.0100 0 100 150...215 30...115 154 112
250920.0200 1 160 170...260 35...125 176 112
250920.0300 2 200 215...285 70...140 215 135
250920.0400 3 300 240...315 100...175 243 163
250920.0500 4 400 290...360 145...215 289 209

Brütsch/Rüegger Tools Ltd. • Heinrich Stutz-Strasse 20 • P.O. Box • CH-8902 Urdorf • www.brw.ch 1215