E-Catalog > 9. SHOWA TOOL > MICRON CHUCK (Milling Chuck)

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Product Information :

Name :
MICRON CHUCK (Milling Chuck)
Category :
  1. เครื่องจักร, อุปกรณ์เกี่ยวกับเครื่องจักร, เครื่องมือกล
Sub - Category :
  1. 9. SHOWA TOOL
Brand :
SHOWA TOOL
Model :
MICRON CHUCK (Milling Chuck)
Product Type :
  1. เครื่องมือ, เครื่องจักรและอุปกรณ์
  2. สินค้า, ผลิตภัณฑ์
Short Description :
Runout Within 2µm guaranteed ! (HIGH PRECISION MILLING CHUCK Runout 2 um max. at 3XD Clamping power 2,450 N.m for HPC32)

Product Detail :

FEATURES

Only Micron Chuck can guarantee such runouts as 0.001mm at chuck nose and 0.002mm at 3xD.
 
Micron Chuck was developed utilizing Showa original direct clamping mechanism and assembling technology acquired in manufacturing high quality machine spindles for a long experience.
 
How to measure runout
 

GRADE

NOSE

3D POINT

AA

1µm

2µm

A

3µm

5µm

 
Struncture of Micron Chuck
 



Clamping power as high as other milling chucks.
 
High accuracy Micron Chuck has a high clamping power, too. The clamping power of Φ32 ID
Micron chuck is 2,450Nm, and Φ6 ID 49Nm - about 2 times bigger than hydraulic chucks.



The cutter is not axially moved by clamping.
 
The cutter is not withdrawn by clamping like collet chucks, due to its unique mechanism. It is required in mass manufacturing line to preset cutter length to close tolerance. In case of collet chuck, the axial cutter projection is shortened by clamping. The back end of the cutter is pressed to the back-up screw at that time, which may cause bending and breakage of small dimeter cutters.
 



Highly balanced and sealed chuck.
 
Maximum speed :
20,000min-1 (Standard HPC-H chuck)
20,000min-1 ("G" type HPC-H chuck)
 

 

#30,#40
HSK50,63

#50
HSK100

Standard

A

10,000min-1

8,000min-1

AA

H

A

20,000min-1

12,000min-1

AA

G

30,000min-1

-

M

-

15,000min-1

10,000min-1



Thru-the-tool coolant type.
 
Thru-the-tool coolant type Micron Chucks available. Please specify it at the time of ordering.
 



Mechanical chuck, Heater is not required.
 
Shrink-fit holders have restrictions of cutter material. But, Micron Chucks are applicable to any material of cutters, keeping high accuracy for a long period of time.
 



Wide range of IDs are available.
 
Standard type, "H" type and "M" type Micron Chucks covers from Φ3mm to Φ50mm ID.



Wide application range.
 
You can extend application range of Micron Chucks by using straight collets. But, direct chucking is recommended obtain the highest performance.

COMPARISON OF RUNOUT & SURFACE FINISH
 
 

MICRON CHUCK

HYDRAULIC CHUCK

COLLET CHUCK

REMARKS

Runout

   

Micron chuck :
Measured runout.
Others : From catalog.

AA grade
1µm at chuck nose,
2µm at 3xD guranteed.

N made
3µm at chuck nose,
5µm at 3xD.

N made AA grade
collet : 5µm at 4xD.

Clamping Power

     

Measure value

Φ6   49N·m
Φ32  2450N·m

26.5N·m
(N made Φ6 chuck)

49N·m
Showa Φ6 coleet
(10 ID max. holder)

Maintenance

       

Periodical greasing since a mechanical chuck.

Periodical check of oil leak required.

Chips must be removed from collet.

Presetting

       

Easy presetting, since cutter is stable.

Easy presetting, since cutter is stable.

Cutter is axially moved by chucking




Clamping power & Tightening Force
Standard  

Chuck size

Clamping Power(N·m) (MIN)

Tightening Force(N·m)

Loosening
Force(N·m)

HPC16

780

62

40

HPC20

1180

HPC25

1760

HPC32

2450

HPC42

3920

 
H-series  

Chuck size

Clamping Power(N·m) (MIN)

Tightening Force(N·m)

Loosening
Force(N·m)

HPC03H

10
(10)

67

67

HPC04H

15
(15)

HPC06H

30
(20)

HPC08H

40
(24)

HPC10H

60
(35)

HPC12H

70
(41)

HPC14H

80

HPC16H

90

*Clamping power of short type chucks (L=75mm max) is shown in ( ).
 
M-series  

Chuck size

Clamping Power(N·m) (MIN)

Tightening Force(N·m)

Loosening
Force(N·m)

HPC03M

5

57

57

HPC04M

10

HPC06M

20

HPC08M

26

HPC10M

33

HPC12M

46


 

 

 

 

 

 

 

 

 
 

 

 

 


For catalog of MICRON CHUCK (Milling Chuck) please send a request to est@winwin.th.com



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