TYPE GUIDE

For the convenience of users,the main products and their general technical features are shown below.
We mainly produce a full range of manual operating self-centring chucks and 4 jaw independent chucks for lathe machine use. (Ref.Index1)
The self-centring chuck's mounting type includes cylindrical center mounting and short taper mounting.
The chucks with cylindrical mounting are normally installed onto the spindle nose by an adapter plate.


Chucks with taper mounting can be installed onto the lathe machine directly. Rod short taper spindle noses. There are four types: A1, A2, C & D. In the case of an A type mount, Except a small quantity lathes due to the structure limit, most lathe machines use A1 type tape lapper mount which use tapped holes in inner bolt circles but the A2 type do achieve high performance due to using outer tapped holes in outer bolt circles. C type mount uses screw bolt nut and belong to quick change series chucks, which can be installed and removed quickly. D type mount use draw bar structure, tightened by cam lock at the spindle noses. It also belongs to the quick change chucks.


For short taper chucks, body and cover are connected with screws, forming sealed ridged structure improving mounting accuracy, and connecting rigidity.


Now short taper chucks have been used widely in foreign countries, so it is an important and necessary machine part for lathe machines. More and more Chinese users start to use it now. The price difference is approx 25% and the atrial difference is only less than 10% if reducing the cost of making adapter plates. The cutting feature of machine tools may be improved obviously, by using the short taper chucks.


The jaws are classified as solid (or one-piece ) jaws and separate (or two-piece) jaws, two types .The separate type jaw include base jaw, hard or soft top jaw connected by screw nut. It can be adjusted into internal and external jaws using separate jaws including A and C type jaws. A type jaw designed according to ISO3442 standard which is interchangeable for connecting dimensions in the world. C type is a Chinese traditional jaws specially designed.


For example

K72 series independent chucks include taper mount & cylindrical mount, two types. A2 mort type is widely used due to high connecting rigidity.

 

Product Feature Application
K10 Series two-jaw self-centring chuck Suitable for processing various irregular shape work pieces General Lathe, Economic numerical-controlled lathe, Milling & Drilling chine, Dividing head and rotary table etc.
K11 series three- jaw self-centring chuck Suitable for processing rod, plate shape work pieces Genera lathe, Economic NC lathe, Milling & Drilling Machine, Dividing head and rotary table etc.
K12 four self-centring chucks Suitable for processing square and eight- edged working pieces and also for rod, plate shape workplaces Genera lathe, Economic NC lathe, Milling & Drilling Machine, Dividing head and rotary table etc.
K72 four jaw independent chuck Jaws individually adjustable to meet concentricity, suitable for irregular and eccentric Work pieces processing Genera lathe, Economic NC lathe, Milling & Drilling Machine, Dividing head and rotary table etc.

Three-Jaw Self-Centring Chucks Clamping Range.

Chuck Dia
?

Internal Jaws

External Jaws

Clamping range

Jamming range

Clamping range

A~A

B~B

C~C1

80

2~22

25~70

22~63

100

2~30

30~90

30~80

125

2.5~40

38~125

38~110

130

3~40

40~130

40~120

160

3~55

50~160

55~145

165

4~60

52~165

55~150

190

4~70

65~190

65~190

200

4~85

65~200

65~200

240

6~100

80~250

90~250

250

6~110

80~250

90~250

315

10~140

95~315

100~315

320

11.5~145

95~320

110~320

325

11.5~165

95~350

110~340

380

11.5~210

95~400

110~400

400

16~210

120~400

120~400

500

25~280

150~500

150~500

630

50~350

170~630

170~630

800

100~500

200~800

200~800

Four-Jaw Independent Chucks Clamping Range.

Model D
Size

Internal Jaws clamping range

External jaws clamping range

A-A1

B-B1

80

5-35

35-80

100

6-45

40-100

125

7-57

48-125

160

8-80

50-160

200

10-100

63-200

250

15-130

80-250

300

20-156

100-300

315

20-170

100-315

320

20-176

100-320

350

20-206

100-350

400

25-250

118-400

450

30-280

120-450

500

35-300

125-500

630

50-400

160-630

800

70-540

200-800

1000

100-680

250-1000

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