SYSTEM 68—REDUCTION The SYSTEM 68 reduction is used to reduce the clamping base body from ø138mm to ø80mm allowing for clamping of workpieces with a limited supporting surface. It is offered with a M24 bolt and only comes in one standard height.
SYSTEM 68 TO SYSTEM 40—REDUCTION The SYSTEM 68 to SYSTEM 40 reduction is used in cases where a fixture already has the smaller System 40 clamping knob. This allows the reuse of current fixtures without the need to modify or replace them.
System 40 Knob (Sold Separately)
Hex 6 (Max 15 Nm) (Max 11 ft-lbs)
• All dimensions are in millimeters • Bolt Included • For other length options, please consult the BIG KAISER Eng. Dept.
• All dimensions are in millimeters
SYSTEM 68—CLAMPING KNOBS
Standard clamping knobs have a metric positioning boss which is ø57mm and ground to a fit of h6. This boss is 10mm tall. The overall measurements of the clamping knob are ø40mm by 68mm tall.
The SBA Knob is ground to fit with the center ground taper of the chuck. This fit establishes centerline location. This location will repeat to better than +/-.0002".
The SBB Knob is ground like a diamond pin and orients your work relative to the centerline of the SBA Knob.
The SBC Knob is ground undersize. It will bring the bottom of the workpiece or fixture down on the top of the Unilock chuck.
Powered by FlippingBook