Weldon, R8, and Other Tool Holders

HSK 50A, 63A, 100A Tool Holders

HSK Diagram

Features

  • Exceed industry standards for taper accuracy and concentricity
  • Two offset axial tapered locking screws maximize rigidity and allow fast tool changes
  • Reducers allow different size boring heads to be used with the same toolholder

Modular Coupling System

Allows heads to be changed without removing tools from the spindle. Two offset center lock screws apply maximum tightening force between the boring head and the toolholder for increased rigidity and enhanced vibration dampening characteristics.

HSK 50A

Part No. Description
D1
d
DB
L1
I1
Screw
6155501 HSK-50A-22-55
22
12
2.165"
3.19"
1.85"
6811510
6155502 HSK-50A-27-65
27
15
2.559"
3.58"
1.93"
6811520
6155503 HSK-50A-32-75
32
20
2.953"
3.98"
2.20"
6811530
6155504 HSK-50A-42-90
42
24
3.543"
4.57"
2.36"
6811540

HSK 63A

Part No. Description
D1
d
DB
L1
I1
Screw
6155631 HSK-63A-22-55
22
12
2.165"
3.19"
1.85"
6811510
6155632 HSK-63A-27-65
27
15
2.559"
3.58"
1.93"
6811520
6155633 HSK-63A-32-75
32
20
2.953"
3.98"
2.20"
6811530
6155634 HSK-63A-42-90
42
24
3.543"
4.57"
2.36"
6811540
6155635 HSK-63A-54-110
54
28
4.331"
5.35"
2.76"
6811550
6155636 HSK-63A-68-145
68
36
5.709"
6.73"
3.35"
6811560

HSK 100A

Part No. Description
D1
d
DB
L1
I1
Screw
6155101 HSK-100A-22-55
22
12
2.165"
3.50"
1.85"
6811510
6155102 HSK-100A-27-65
27
15
2.559"
3.90"
1.93"
6811520
6155103 HSK-100A-32-75
32
20
2.953"
4.09"
2.20"
6811530
6155104 HSK-100A-42-90
42
24
3.543"
4.69"
2.36"
6811540
6155105 HSK-100A-54-110
54
28
4.331"
5.47"
2.76"
6811550
6155106 HSK-100A-68-145
68
36
5.709"
6.85"
3.46"
6811560
6155107 HSK-100A-85-165
85
50
6.496"
7.64"
3.70"
6811570
6155108 HSK-100A-100-185
100
60
7.283"
8.43"
4.49"
6811580