PALM CHUCK

Dynex Corporation

Palm Chuck
Catalog

Features

Chucking system for highly efficient machining.
Advanced technology by experienced knowledges

Achieve high precision machining

PALM CHUCK offers superior repeatability (1µm) based on diaphragm technology and 6 or 8 top jaws, and achieves high accuracy of roundness even with thin-wall workpiece.

Variety of optional functions

Workpiece stopper, through coolant and seating air sensor are easily feasible. QC (Quick Change) jaw is also available.

Achieve high speed rotating machining

Built-in counter weight minimizes a drop of clamping force by centrifugal force at high speed rotation.

Easy adjustment of clamping force

By built-in air cylinder, it’s possible to obtain proper clamping force for each application by adjusting air pressure and hydraulic circuit is not necessary.

Line-up

		(6)DBQ	(6)DBS	HCS	SBQ	DRP	6DRP
Quick Change Jaws (only for 6-jaw type)		●	●	―	―	―	―
High clamping force by built-in double piston		●	●	●	―	●	●
Slim body		―	―	―	●	―	―
Large through hole		―	―	―	―	●	●
8-jaw for high roundness		●	●	―	●	●	―
6-jaw for high rigidity and chip evacuation		●	●	●	―	―	●
Use for O.D. & I.D. clamp		●	●	―	●	●	●
Use for only I.D. clamp		―	―	●	―	―	―
Compatible with seating air sensor and through coolant		―	●	●	―	―	―
Size	3inch	●	●	―	●	●	―
	4inch	●	●	●	●	●	―
	6inch	●	●	●	―	●	●
	8inch	●	―	―	―	●	●

DBQ

Standard type (8-jaw)

High clamping force by built-in double piston
Seating air sensor or through coolant (for both, select DBS)
Easy to mount a stopper into center tap hole
Achieve high roundness with sufficient clamping force by 8-jaw

・Specifications

Chuck size		3inch	4inch	6inch	8inch
Max rotation speed	min^-1	12,000	12,000	8,000	3,500
Jaw travel (Jaw height : 20mm)	mm (dia.)	0.4	0.5	0.8	1.0
Air pressure	MPa	0.05～0.5	0.05～0.5	0.05～0.5	0.05～0.5
Mounting bolt		M5×6	M5×6	M6×6	M8×6
Weight	kg	1.4	2.3	5.2	12.5

6DBQ

Standard type (6-jaw)

QC jaw option is available (4, 6inch)
Seating air sensor or through coolant (for both, select DBS)
Easy to mount a stopper into center tap hole
Achieve high rigidity and easy removal of cutting chips by 6-jaw

・Specifications

Chuck size		3inch	4inch	6inch	8inch
Max rotation speed	min^-1	12,000	12,000	8,000	3,500
Jaw travel (Jaw height : 20mm)	mm (dia.)	0.4	0.5	0.8	1.0
Air pressure	MPa	0.05～0.5	0.05～0.5	0.05～0.5	0.05～0.5
Mounting bolt		M5×6	M5×6	M6×6	M8×6
Weight	kg	1.4	2.3	5.2	12.5

DBS

Compatible with seating air sensor and through coolant (8-jaw)

Seating air sensor and through coolant are simultaneously available
Easy to mount a stopper into center tap hole
Achieve high roundness with sufficient clamping force by 8-jaw
Compatible with through coolant and seating air sensor by using 4-passages air tube

・Specifications

Chuck size		4inch	6inch
Max rotation speed	min^-1	12,000	8,000
Jaw travel (Jaw height : 20mm)	mm (dia.)	0.5	0.8
Air pressure	MPa	0.05～0.5	0.05～0.5
Mounting bolt		M5×6	M6×6
Weight	kg	2.3	5.2

6DBS

Compatible with seating air sensor and through coolant (6-jaw)

QC jaw option is available (4, 6inch)
Seating air sensor and through coolant are simultaneously available
Achieve high rigidity and easy removal of cutting chips by 6-jaw
Compatible with through coolant and seating air sensor by using 4-passages air tube

・Specifications

Chuck size		4inch	6inch
Max rotation speed	min^-1	12,000	8,000
Jaw travel (Jaw height : 20mm)	mm (dia.)	0.5	0.8
Air pressure	MPa	0.05～0.5	0.05～0.5
Mounting bolt		M5×6	M6×6
Weight	kg	2.3	5.2

HCS

For I.D. clamp only (6-jaw)

Specialized I.D. clamp to minimize lift-up of workpiece
Seating air sensor and through coolant are simultaneously available
Easy to mount a stopper into center tap hole
Achieve high rigidity and easy removal of cutting chips by 6-jaw

・Specifications

Chuck size		4inch	6inch
Max rotation speed	min^-1	12,000	8,000
Jaw travel (Jaw height : 20mm)	mm (dia.)	0.5	0.8
Air pressure	MPa	0.05～0.5	0.05～0.5
Mounting bolt		M5×6	M6×6
Weight	kg	2.3	5.2

SBQ

Slim type (8-jaw)

Slim design and light weight
Achieve finer adjustment of clamping force than other types
Built-in counter weight minimizes a drop of clamping force at high speed
Achieve high roundness with sufficient clamping force by 8-jaw

・Specifications

Chuck size		3inch	4inch
Max rotation speed	min^-1	12,000	12,000
Jaw travel (Jaw height : 20mm)	mm (dia.)	0.4	0.5
Air pressure	MPa	0.05～0.5	0.05～0.5
Mounting bolt		M5×6	M5×6
Weight	kg	0.9	1.6

DRP

Large through hole type (8-jaw)

Large through hole for various kinds of workpiece
High clamping force by built-in double piston
Seating air sensor or through coolant available (for both, select DBS)
Achieve high roundness with sufficient clamping force by 8-jaw

・Specifications

Chuck size		3inch	4inch	6inch	8inch
Max rotation speed	min^-1	12,000	10,000	8,000	3,500
Jaw travel (Jaw height : 20mm)	mm (dia.)	0.4	0.5	0.8	1.0
Air pressure	MPa	0.05～0.5	0.05～0.5	0.05～0.5	0.05～0.5
Mounting bolt		M5×6	M5×6	M6×6	M8×6
Weight	kg	1.4	2.2	5.0	12

6DRP

Large through hole type (6-jaw)

Large through hole for various kinds of workpiece
High clamping force by built-in double piston
Seating air sensor or through coolant available (for both, select DBS)
Achieve high rigidity and easy removal of cutting chips by 6-jaw

・Specifications

Chuck size		4inch	6inch	8inch
Max rotation speed	min^-1	10,000	8,000	3,500
Jaw travel (Jaw height : 20mm)	mm (dia.)	0.5	0.8	1.0
Air pressure	MPa	0.05～0.5	0.05～0.5	0.05～0.5
Mounting bolt		M5×6	M6×6	M8×6
Weight	kg	2.2	5.0	12

Applications

Quick Change Jaw

Large through hole type (6-jaw)

Improve set up time drastically by easy jaw exchange with high accuracy.
Accurate positioning and enough engagement by 2 positioning taper pins.
Quick Change (QC) Jaw is available for 6DBQ type and 6DBS type.
Customized top jaw is available upon request.

Chuck	Type	Size	Remarks
6DBQ	PALM4-DQJ	4inch	Standard type
6DBQ	PALM6-DQJ	6inch	Standard type
6DBS	PALM4-DSQJ	4inch	Compatible use of seating air sensor and through coolant
6DBS	PALM6-DSQJ	6inch	Compatible use of seating air sensor and through coolant