GN 817.5Indexing plungers

Indexing plungers

for precision locating, plunger conical

GN 817.5

Catalogue
d1 Pin h6
l1
l2
l3
b
d2
d3
d4
k
l4
l5
l6
GN 817.5-6-18-B
6
18
9
9
13
23
4.3
34
23
45
6
25
GN 817.5-6-18-C
6
18
9
9
13
23
4.3
34
23
45
6
25
GN 817.5-6-24-C
6
24
9
15
13
23
4.3
34
23
45
6
25
GN 817.5-6-24-B
6
24
9
15
13
23
4.3
34
23
45
6
25
GN 817.5-8-20-C
8
20
10.6
9.4
16
28
5.3
38
26
51
8
27
GN 817.5-8-20-B
8
20
10.6
9.4
16
28
5.3
38
26
51
8
27
GN 817.5-8-26-C
8
26
10.6
15.4
16
28
5.3
38
26
51
8
27
GN 817.5-8-26-B
8
26
10.6
15.4
16
28
5.3
38
26
51
8
27
GN 817.5-10-24-C
10
24
12.6
11.4
16
28
5.3
38
26
51
8
27
GN 817.5-10-24-B
10
24
12.6
11.4
16
28
5.3
38
26
51
8
27
GN 817.5-10-32-C
10
32
12.6
19.4
16
28
5.3
38
26
51
8
27
GN 817.5-10-32-B
10
32
12.6
19.4
16
28
5.3
38
26
51
8
27

Types

  • Type B: without rest position
  • Type C: with rest position

Steel

  • blackened
  • Pin hardened and grounded

Knob Plastic (Polyamide PA)

  • black, matt
  • not removable

Indexing plungers GN 817.5 allow highly accurate positioning, with the guidance made by the positioning bushings DIN 172 / DIN 179 with cylindrical bore. The actual indexing bore is fitted with positioning bushings GN 172.1 / GN 179.1 with conical bores.

The conical shape of the indexing pin / the indexing bore makes the positioning virtually clearance-free and therefore highly precise.

Type C is used for such applications where the plunger has to stay in its retracted position. To achieve this, the knob is rotated by 90° degrees after being retracted. A notch keeps the plunger in this position.

The length l7 is determined by the penetration depth of the indexing pin into the cone of the bushing.

The length l8 must ensure that the indexing pin fully disengages, bushing length and plate thickness olus any gap can then be selected within certain margins.

If engaged, the pin must have a minimum remaining stroke of 0.5 mm to make sure that the conical section of the pin is located without clearance in the cone of the guide bushing.

Two different plunger pin lengths l1 are available for each indexing plunger diameter d1 (see product table).

For a safe remaining stroke length: l9 = l1 - 0.5 mm

For mounting bushings with tolerance n6, a hole with tolerance H7 corresponding to the external diameter is usually provided.

A selection of suitable guide bushings DIN 172 and DIN 179 with cylindrical bore and guide bushings GN 172.1 / GN 179.1 with conical bore.

Related products
Guide bushings

DIN 179

Guide bushings Drill bushings, without collar
Guide bushings

GN 172.1

Guide bushings with collar / with conical bore, for indexing plungers GN 817.5
Guide bushings

GN 179.1

Guide bushings without collar / with conical bore, for indexing plungers GN 817.5
Indexing plungers

GN 817.3

Indexing plungers for precision locating, plunger cylindrical
Black-oxide steel plunger, without locking nut

PMT.100-A

Indexing plungers SUPER-technopolymer body
Black-oxide steel plunger, without locking nut

PMT.101-A

Indexing plungers Rest position, SUPER-technopolymer body
Black-oxide steel plunger, without locking nut

PMT.110-A

Indexing plungers SUPER-technopolymer body
Black-oxide steel plunger, without locking nut

PMT.200-A

Indexing plungers Rest position, SUPER-technopolymer body