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NTH COLLET CHUCKS

PTG PRECISE EXPANDING MANDREL

PTG EXPANDING MANDREL

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Products in detail

Brand：NTH

High Precise extanding collet

Large expansion range up to 0.6mm.
Double-angle principle allows for fast loading/unloading of components.
Greater holding power by applying pressure evenly along the length of the sleeve.
Guaranteed accuracy of 0.015mm.

The PTG extanding collet, suitable for the CNC, grinding machine, special machine etc. It can provide strong and stationary gripping force as the double slope design.The repeatibility accuracy can up to 1.5μ. Besides, the non-standard can be customized.

Standard Model

3A1 2C1 1C1 18C1 4C1 5C1 6C1 7C1 8C1
A
（Extanding ID Dia）

Min:12.5

Max:16.0

Min:16.0

Max:22.0

Min:22.0

Max:28.5

Min:28.5

Max:41.0

Min:41.0

Max:63.5

Min:63.5

Max:76.2

Min:76.2

Max:89.0

Min:89.0

Max:130.0

Min:130.0

Max:178.0

B 60 66 72 79 84 109 118 133 153
C 20 20 20 20 20 25 25 30 30
D 22 27 32 38 43 51 57 63.5 79.5
E 14.6 15 15.5 15.3 14.8 25.3 24.7 25.2 24.6
F 20 22 30 31 36 36 37 47 22
G 40 40 40 40 40 60 60 100 100
H 75 75 75 75 75 120 120 180 180
J 11 15 20 26.5 37.5 55 74.5 86.5 124
K 6 6 6 6 6 6 6 6 6
L 12.6 14.1 20.7 26.3 37 57.3 71.1 84.1 123
M( Screw） M4 M8 M8 M10 M12 M20 M20 M24 M36

N

（Screw）

Ø58-M8 Ø58-M8 Ø58-M8 Ø58-M8 Ø58-M8 Ø94-M10 Ø94-M10 Ø150-M12 Ø150-M12
R（Screw) Ø28-M4 Ø28-M4 Ø58-M6 Ø58-M6 Ø58-M6 Ø94-M8 Ø94-M8 Ø150-M10 Ø150-M10
Pulling force（kgf)
700 1000 1200 1800 2300 2800 3200 3700 5500


Flush type

3A2 2C2 1C2 18C2 4C2 5C2 6C2 7C2 8C2
A（内张套径）

Min:16.

Max:22.0

Min:22.0

Max:28.5

Min:28.5

Max:40.0

Min:40.0

Max:51.0

Min:51.0

Max:73.0

Min:73.0

Max:89.0

Min:89.0

Max:102.0

Min:101.0

Max:143.0

Min:143.0

Max:178.0

C 20 20 20 20 20 25 25 30 30
D 26 32 38 45 50 60 69 78.5 99.5
E 14.6 15 15.5 15.3 14.8 25.3 24.7 25.2 24.6
F 20 22 30 31 36 36 37 47 22
G 40 40 40 40 40 60 60 100 100
H 75 75 75 75 75 120 120 180 180
J 11 15 20 26.5 37.5 55 74.5 86.5 124
K 6 6 6 6 6 6 6 6 6
L 12.6 14.1 20.7 26.3 37 57.3 71.1 84.1 123

M

(Screw）

M4 M8 M8 M10 M12 M20 M20 M24 M36

N

( Screw)

Ø58-M8 Ø58-M8 Ø58-M8 Ø58-M8 Ø58-M8 Ø94-M10 Ø94-M10 Ø150-M12 Ø150-M12

R

（Screw)

Ø28-M4 Ø28-M4 Ø58-M6 Ø58-M6 Ø58-M6 Ø94-M8 Ø94-M8 Ø150-M10 Ø150-M10
Pulling force（kgf) 700 1000 1200 1800 2300 2800 3200 3700 5500

Subject to technology changes without prior information
非标需求可定做 Non-standard requirements can be made

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