03J7504 - 71-106 Z4 Chuck Set
Designed for larger lathes and heavier turning, the Z4 is a four-jaw, self-centering scroll chuck rated for workpieces up to 20" in diameter and 6" thick.
Its 3 7/8" machined steel body is larger and heavier than the Z3, providing a more substantial platform for large bowls, platters and hollow forms. The geared mechanism is operated with a dedicated hex-ended chuck key. Unlike the Z3, the Z4 has an enclosed rear scroll mechanism and covered side-key engagement points, helping shield the gearing from dust and debris.
The insert-type mounting system accepts the same range of interchangeable spindle-thread inserts as the Z3. Choose the insert that matches your lathe spindle; should you later change lathes, you can generally continue using the chuck by fitting a different insert. Inserts sold separately.
The numbered jaw segments correspond with numbered sliders for correct installation. The sliders retract fully within the chuck body and remain essentially flush with its perimeter at maximum extension.
Supplied with 50mm standard jaws, a right-hand wood screw, Z4 chuck key, T20 star driver, 3mm hex key, eight M6 × 10 jaw screws, an M6 × 6 retaining screw and instructions.
The supplied wood screw is suitable for blanks up to 10" in diameter by 4" thick, at a maximum speed of 600 rpm. Rikon specifies a pilot hole 9/16" deep and 5/16" in diameter for softwood or 9/32" for hardwood.
Covered by a 10-year warranty.
Chuck diameter: 3 7/8" (98.5mm)
Maximum workpiece: 20" diameter × 6" thick
Insert required: yes, sold separately
Included jaws: 50mm Standard Jaws
Weight (without insert or jaws): 3.7 lb (1.67 kg)
Options:
Variations:
Rikon Z4 Insert-Type Lathe Chuck Set (71-106)
Designed for larger lathes and heavier turning, the Z4 is a four-jaw, self-centering scroll chuck rated for workpieces up to 20" in diameter and 6" thick.
Its 3 7/8" machined steel body is larger and heavier than the Z3, providing a more substantial platform for large bowls, platters and hollow forms. The geared mechanism is operated with a dedicated hex-ended chuck key. Unlike the Z3, the Z4 has an enclosed rear scroll mechanism and covered side-key engagement points, helping shield the gearing from dust and debris.
The insert-type mounting system accepts the same range of interchangeable spindle-thread inserts as the Z3. Choose the insert that matches your lathe spindle; should you later change lathes, you can generally continue using the chuck by fitting a different insert. Inserts sold separately.
The numbered jaw segments correspond with numbered sliders for correct installation. The sliders retract fully within the chuck body and remain essentially flush with its perimeter at maximum extension.
Supplied with 50mm standard jaws, a right-hand wood screw, Z4 chuck key, T20 star driver, 3mm hex key, eight M6 × 10 jaw screws, an M6 × 6 retaining screw and instructions.
The supplied wood screw is suitable for blanks up to 10" in diameter by 4" thick, at a maximum speed of 600 rpm. Rikon specifies a pilot hole 9/16" deep and 5/16" in diameter for softwood or 9/32" for hardwood.
Covered by a 10-year warranty.
