KNCS-NB-CL
High precision power chuck Ø 630 mm ■ Quick jaw change ■ Large through-hole ■ Wide master jaws – Radial fine adjustment ■ High flexibility: jaws radially adjustable / reversible
CENTER LINE
Application/customer benefits • For workpieces with high concentricity callout • For radial readjustment of workpieces with big changes in weight during machining • To apply additional grip force to the workpiece by the adjustment screws • Readjustment of the centerline of the workpiece in process Technical features • Integrated fine adjustment to center the workpiece • Fine adjustment is radially displaceable for different workpiece diameters • Concentricities higher than the repeatability of the chuck can be reached Standard equipment Ordering example 3-jaw chuck with disengaging key Mounting key Set of coverplates Fine adjustment 3-jaw chuck KNCS-NB-CL 630
Radial fine adjustment CL
Actual gripping force diagram
120 100 160 140 200 180 240 220 260
630
80 60 40 20
F G
F
0 500
1500 2000
3000 3500
1000
2500
Speed (r.p.m.)
The data in the diagram refers to 3-jaw chucks, newly maintained according to their service manuals using SMW-AUTOBLOK K05 grease.The static and dynamic gripping forces have been measured using standard soft top jaws, placed in a position not exceeding the outer diameter of the chuck. Safety advice / danger of damage: When using taller / heavier jaws and / or clamping on a bigger diameter reduce draw pull / rotating speed accordingly.
The centerline is affected by changes of weight of the workpiece and the mechanic repeatability of the chuck itself. The center of the workpiece can be fine adjusted even more accurate than the repeatability of the chuck, using the CL fine adjustment. Integrated CL fine adjustment devices allow to bring any workpiece into the exact rotation center of the machine while clamped. This is ideal for high accurate tubine shafts, aerospace parts etc.
Technical data
SMW-AUTOBLOK Type
KNCS-NB-CL 630
Id. No. Number of jaws Radial jaw stroke Axial piston stroke
161250 3 10 42
mm mm
Max. draw-pull
120 250 1500 390 18
kN kN
Max. gripping force
Max. speed
r.p.m.
Weight (without top jaws)
kg
Moment of inertia
kg·m 2
Recommended closed center cylinder Recommended open center cylinder
SIN-S 175 / 200 VSG 450-165
168 SMW-AUTOBLOK
Made with FlippingBook Publishing Software