Machinery's Handbook, 31st Edition
1034
Collets
5 32 ---
3 32 ---
Wide ×
7 16 ---–20 UNF Thread
Keyway −
Deep
1.2500
0.9375
16° 51'
0.9495 0.9490
1.25
0.9375
3.0625
4.00
0.125
All dimensions in inches.
Bridgeport R8 Collet Dimensions Collet Styles for Lathes, Mills, Grinders, and Fixtures
A
C
C
A C
A
B
B
1
2
B
3
A
A
C
A
C
B
B
4
5
B
6
A C
A C
A C
B
B
B
7
9
8
A
A C
A C
B
B
B
11
12
10
Collet Styles Collets for Lathes, Mills, Grinders, and Fixtures
Dimensions
Max. Capacity (inches)
Collet
Style
Bearing Dia., A
Length, B
Thread, C
Round Hex Square 0.500 0.438 0.344 1.000 0.875 0.719 0.313 0.219 0.188 0.250 0.219 0.172 1.063 0.875 0.750 1.000 0.875 0.719 0.688 0.594 0.469 0.625 0.484 0.391 0.500 0.438 0.344
1A
1 1 2 1 1 3 1 2 1
0.650 1.125 0.437 0.335 1.250 1.250 0.860 0.750 0.629
2.563 3.906 1.750 1.438 3.000 2.813 3.313 2.563 3.188
0.640 × 26 RH 1.118 × 24 RH 0.312 × 30 RH 0.322 × 40 RH 1.238 × 20 RH 0.850 × 20 RH 0.500 × 20 RH 0.622 × 24 RH None
1AM
1B 1C 1J 1K 2A
2AB 2AM
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