Diaphragm Type High Precision Air Chuck

PIONEER Diaphragm Chuck is to clamp the workpiece as soft as possible, and evenly, to avoid the deformation when clamping by utilizing the tensile strength of special material used for diaphragm. Naturally, the highest possible accuracy is obtainable in turning. Up to 12,000min-1 operation is possible due to the unique design which reduce the affection of centrifugal force. Super high precision and performance in turning is ensured.

■Size:3” to 6”
■Repeatability:Within 0.4μm
■Maintenance Free (No lubrication necessary)
■Std. Rotary Type / Quick Change Type / Stationary Type

Model No./Dimension/Spec.

Dimensions & Specification

*8 and 6 following HN,SN or WZ means the number of seats where the jaw is
  mounted on, and naturally the type of jaw to be used with.

Model No. A B E I J PCD
M
PCD
N
N Speed Chucking cap. T.I.R. Wgt.kg
3SN8-3 82 60 36 36 25 70 30.5 8-M4 12,000min-1 2.0mm~
40.0mm
≦0.4μm 1
3SN6-3 82 60 36 36 25 70 30.5 6-M4 12,000min-1 2.0mm~
40.0mm
≦0.4μm 1
3HN8-3 82 60 55 36 25 70 30.5 8-M4 12,000min-1 2.0mm~
40.0mm
≦0.4μm 1.7
3HN6-3 82 60 55 36 25 70 30.5 6-M4 12,000min-1 2.0mm~
40.0mm
≦0.4μm 1.7
4HN8-3 100 82.55 55 48 32 88.9 40 8-M5 12,000min-1 2.0mm~
60.0mm
≦0.4μm 2.6
4HN6-3 100 82.55 55 48 32 88.9 40 6-M5 12,000min-1 2.0mm~
60.0mm
≦0.4μm 2.6
4/5HN8-3 100 82.55 55 60 44 88.9 52 8-M5 10,000min-1 2.0mm~
60.0mm
≦0.4μm 2.6
6HN8-3 150 124.97 68 80 60 135.8 70 8-M6 8,000min-1 3.0mm~
90.0mm
≦0.4μm 7.1
6/8HN8-3 150 124.97 68 102 77 135.8 90 16-M6 8,000min-1 3.0mm~
90.0mm
≦0.4μm 7.1
4/5WZ6-
2-2B
100 82.55 53 60 44 88.9 52 2X6-M5 8,000min-1 2.0mm~
60.0mm
≦0.4μm 2.3
5WZ8-3 126 101.6 58 60 44 114.3 52 8-M5 8,000min-1 3.0mm~
70.0mm
≦0.4μm 3.8

Quick Change System

Chuck can be changed without dismounting the ASA.
Changeover time is drastically reduced, and machine's down time is also significantly reduced.

Dimensions & Specification

Refer to the equivalent model for the spec. of mounting bolt etc.

Model No. F Wgt.kg
 3HN6-3-QTN 82 60 45 36 25 2.2
   3HN8-3-QTN 82 60 45 36 25 2.2
 4HN8-3-Q 100 82.55 55 48 32 2.6
   4HN6-3-Q 100 82.55 55 48 32 2.6
   4/5HN8-3-Q 100 82.55 55 60 44 2.6
   4HN8/14-3-Q 100 82.55 55 48 32 2.5
 6HN8-3-Q 150 124.97 68 80 60 7.1
   6/8HN8-3-Q 150 124.97 68 102 77 7.1
   6/8HN8/30-3-Q 150 124.97 68 102 77 6.8

*8 or 6 after HN stands for the number of seats to accept jaw=number of slits of jaw.

Jaw/Form Machining

How to order std. blank jaw

※Std. blank jaw is made of die steel pre-hardened to HRC40.
 Other material and hardness can be used, but, it is suggested to be consulted for the propriety to
   the application.
 Hardened to HRC55-60 jaw is available.

Outline Drawing of Std. Jaws

Dimensions of Std. Jaw

TypeA TypeB
φA ℓ1 φB ℓ2
 3SN 3HN 40 23 30 22 23 30
 4HN 52 23 30 28 23 30
 5WZ 4/5HN 63 25 30 40 25 30
 6HN 82 25 30 50 25 30
 6/8HN 110 25 30 - - -

Other sizes available on request as option.

Type A is basically for OD clamping, and Type B is for ID clamping.
The selection of A or B depends on how fast and efficiently it can be form-machined to the required shape.

Type of Jaw

BROKEN TOOL SENSOR