FRC-N
Lever chuck Ø 215 - 365 mm
■ Pull-down to axial datum ■ Spring loaded or fixed center ■ proofline ® chucks = fully sealed - low maintenance
Compensating clamping TONGUE & GROOVE
Application/customer benefits • Compensating clamping of shafts between centers, where the clamping diameter is not concentric to the workpiece axis • The grip force of the chuck supplies the torque necessary to machine the workpiece and pulls it down to the axial datum (center point / axial stop) • Due to its high rigidity against torsion the chuck is ideal for turning as well as for milling operations
Technical features • For O.D. clamping only • Compensating clamping with large compensating stroke • TONGUE & GROOVE base jaws • Pull down to axial datum • Centrifugal force compensation Standard equipment 3-jaw chuck without centering insert Mounting bolts
• Permanent grease lubrication • High rigidity against torsion • Center point adjustable • proofline® chucks = fully sealed - low maintenance
Ordering example Lever chuck FRC-N 215 A6
s
a l e
m a i
■ FRC-N pull-down and compensating clamping The tailstock supplies the requested force to support the part only. The result is a cylindrical finished shaft with concentric diameters. The chuck pulls the workpiece down to the center point without bending the workpiece.
■ Non pull-down compensating chuck Lifting of the top jaws pushes the shaft away from the centering reference; high tailstock force has to be used to overcome this lifting, resulting in a bending of the component. Technical data
SMW-AUTOBLOK Type Angular jaw stroke U° Radial jaw stroke at distance h
FRC-N 215
FRC-N 285
FRC-N 365
deg. mm mm mm
6°
6°
6°
6.3
7.3 26 ±2
8.4
Wedge stroke
22
31
Compensation (on the dia.) at distance h
±1.5
±2.5 110 240 2500
Max. draw pull
kN kN
45
70
Max. gripping force at distance h
100
150
Max. speed
r.p.m.
4500
3500
Weight (plain back without top jaws)
kg
30
62
120
Moment of inertia* Standard fixed center
kg·m 2 Id. No. Id. No.
0.17
0.65
2
81732141 81722141
81732841 81722841
81733641 81723641
Standard spring loaded center Recommended actuating cylinders
Type
SIN-S 100 - 125
125 SIN-S 125 -150
SIN-S 150 - 200
Id. No. FRC-N
77817821
77817828
77817836
* The above maximum speed is allowed with standard weight / height top jaws and applying the full draw pull only. For more information please contact SMW-AUTOBLOK.
SMW-AUTOBLOK 472
SMW-AUTOBLOK 466
SMW-AUTOBLOK 325
196 SMW-AUTOBLOK
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