Precision Headed Jig Bushes to DIN 172, similar to ISO 4247

Materials: Case hardened steel   Hardness: 740±80 HV 10
Specification:

 

Hardened and tempered. Bore ground to tolerance F7. Outside diameter d2 ground to tolerance n6.

 

Type A: Bore radius on one side only.

Type B: Bore radius on both sides.

The bushes are supplied with lead-in edge.

   
d1
l1
d2
d3
l2
r
tr
tp
F7 short medium long n6          
0.4 – 0.8 Bore d1 stepped <15 in increments of 0.1mm and 0.25mm

>15 preferable in increments of 0.5mm

6 3 6 2 1 0.01 0.03
0.9 – 1.0 9 3 6
1.1 – 1.8 4 7
1.9 – 2.6 5 8
2.7 – 3.3 8 12 16 6 9 2.5 1
3.4 – 4.0 7 10
4.1 – 5.0 8 11
5.1 – 6.0 10 16 20 10 13 3 1.5 0.02
6.1- 8.0 12 15
8.1 – 10.0 12 20 25 15 18 2
10.1 – 12.0 18 22 4 2
12.1 – 15.0 16 28 36 22 26
15.1 – 18.0 26 30
18.1 – 22.0 20 36 45 30 34 5 3
22.1 – 26.0 35 39 0.05
26.1 – 30.0 25 45 56 42 46
30.1 – 35.0 48 52 3 0.04
35.1 – 42.0 30 56 67 55 59 3.5
42.1 – 48.0 62 66 6
48.1 – 55.0 70 74
55.1 – 63.0 35 67 78 78 82 4