GN 200 Indexing Mechanisms Steel


GN 200 Steel Indexing Mechanisms Type: AS - With knob, matte chrome plated finish, with scale 0...50, 60 graduations
Type: AS - With knob, matte chrome plated finish, with scale 0...50, 60 graduations
GN 200 Steel Indexing Mechanisms Type: AS - With knob, matte chrome plated finish, with scale 0...50, 60 graduations GN 200 Steel Indexing Mechanisms Type: A - With knob, blackened finish, without scale GN 200 Steel Indexing Mechanisms Type: B - With one tension lever GN 200 Steel Indexing Mechanisms Type: C - With two tension levers

Product description


GN 200 indexing mechanisms replace and simplify complicated indexing and safety mechanisms.

Besides the standard scale (Type AS) the control knob version may be supplied with any scale. In such cases, it is recommended to use the matte chrome plated version since the color contrast is better.

Regarding design, numbering position and numbering sequence of the scale please see the layout for scale rings on the order sheet “How to order Graduations“.


Steel, blackened finish
Type AS:
Control knob matte chrome plated finish
  • Black, laser engraved
  • Reference line on location ring

Keyway P9 DIN 6885
for bore K 10
Keyway P9 DIN 6885 Page 2
for bores > K 10

Fixed cylindrical handles EN 539
Technopolymer (Polyamide PA)
Black, shiny finish

RoHS compliant

On request

Special graduations
see “How to order Graduations“

Technical drawing

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GN 200 Steel Indexing Mechanisms sketch

Part Options / Table


AWith knob, blackened finish, without scale
ASWith knob, matte chrome plated finish, with scale 0...50, 60 graduations
BWith one tension lever
CWith two tension levers
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Dimensions in: Inch | Metric
d1 -0.02d2 +0.001
Bore with keyway
1.73K 10K 12-1.300.910.911.301.460.241.222.950.16
2.05K 12K 14K 161.651.021.241.651.480.241.243.540.16

Build & Price

3D Product Configurator
Outside diameter d1
Bore with keyway d2


With these indexing mechanisms, shaft and lead screws can be turned and positioned in steps of 6° or multiples of it.


The indexing mechanism is a selfcontained unit, all the adjusting and securing components are housed in the smallest possible space. The unit consists of three main parts:

- Bushing – can be connected to the shaft with a key or crossdowel.
- Location ring – is screwed and doweled to the machine or equipment. The bushing is also a bearing for the location ring.
- Knurled housing – providing engagement between the locating ring and the shaft which can be turned or positioned.

In the locked position, the knurled housing via the internal teeth (60) connects the locating ring and the bushing (both via external teeth), the latter being connected to the shaft. To turn the shaft, the knurled housing is pulled out against the spring pressure, disengaging from the location ring, but still engaged with the bushing.

Further information

With 60 teeth, the following divisions can be achieved: 2, 3, 4, 5, 6, 10, 20, 30.
A simple method provides indexing of the shaft to limited number of positions only, i.e. every 120°.
For this purpose, the location ring is manufactured with a dowel which allows engagement only when the bushing is provided with a corresponding hole (see assembly examples).
This hole can be manufactured oversize as the dowel is for rough positioning only. Accurate positioning is maintained via the teeth.
Knurled housing and tension levers can be supplied with scales and symbols.
With teeth, a more accurate and wear-resistant indexing mechanism is obtained than with single dowel locations.
When a very high torque is to be transmitted, engaging and disengaging of the teeth is made difficult due to the small clearance, i.e. the friction between them. In such cases, indexing levers GN 215 are recommended.

Selected Part

Total US Dollars (net)
In stock: 16
In Stock
Please note our quantity discounts (US Dollars).
≥ 100$51.94
Prop 65: Not compliant
Cancer and Reproductive Harm -
RoHS: Compliant
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Weight: 0.680 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
All Prices are in US Dollars. Taxes Not Included.

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