SPANNTOP

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SPANNTOP chuck combi pull-back 5 When clamping, the clamping head moves axially to the rear, so that the work piece is pulled tightly onto the fixed end-stop. Thus even with the shortest clamping lengths very stable work piece clamping is achieved. Moreover, the segments of the clamping head act like wedges between the work piece and the massive chuck body, and thus ensures rigidity of the entire clamping device, which greatly increases cutting tool life. 1 6 4 2 3 SPANNTOP combi pull-back is ideal ■ as through-bore chuck for bar work ■ as end-stop chuck for chuck work ■ with work pieces that have a short clamping length 1 flange 2 chuck body 3 clamping head 4 torsional safety 5 mounting threads for front end-stop 6 changeable base end-stop [can be fixed from outside via 3 screws] The advantages ■ axial draw force against the end-stop, which stabilizes clamping [important for shorter clamping length] ■ little inertia loss ■ extremely rigid ■ optimal holding power ■ simple mechanics, results in better power conversion ■ clamps work pieces with short clamping length ■ converts to a fully functional »bar chuck« when the end-stop plate is removed ■ excellent concentricity after clamping head change [< 0.01 mm] 6 SPANNTOP chuck . Combi pull-back
effective clamping forces Material: 18CrNi8 / 1.5920 Depth of cut: approx. 1.0 mm Feed: 0.25 mm/U Cutting speed: 100 rpm Significant time savings thanks to fast processing in the SPANNTOP chuck without the use of a center, which is required with a jaw chuck. chuck base end-stop end-stop work piece clamping head Common-Rail injection nozzle –––––––––––––––––––––––––––––––– Material: 18CrNi8 / 1.5920 Depth of cut: approx. 1.5 mm Feed: 0.25 mm/U Cutting speed: 100 rpm Typical clamping and processing examples Common-Rail sun shaft front end-stop coolant supply is possible for flushing or for air sensing control depth [end-] stop with/without ejector SPANNTOP Chuck . Combi pull-back 7
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Page 5: Circumferential clamping Axial forc
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Page 13 and 14: Clamping head change-over Set-up fo
Page 15 and 16: Jaw adapter. Jaw-clamping-in-SPANNT

SPANNTOP

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