Our customers in the USA are serviced by JW Winco. Please, use the website jwwinco.com
Our customers in the USA are serviced by JW Winco. Please, use the website jwwinco.com
With this adjustable knob GN 700 a shaft can be infinitely adjusted in both directions. The anti-backlash mechanism with a max. load of 15 Nm ensures the firm locking of the shaft in any position.
This mechanism prevents any uncontrolled movement of the shaft. The locking action is a safety feature to prevent unwanted re-adjustments caused by backlash and vibration.
Scale and arrow on the control knobs are indelibly marked and easily legible since the engraved "aluminum colored" numbers contrast with the black anodized surface.
Besides the standard scale (type S) the control knob version may be supplied with any other scale (type KS).
Regarding design, numbering run, numbering position and numbering sequence of the scale please see the layout for scale rings on the order sheet „How to order Graduations“
Attachment part / bushing
Steel
Blackened
Blocking mechanism
Steel
Hardened and ground
Scale ring / rotating knob
Aluminum
RoHS
| A | With arrow |
| B | Neutral, without arrow or scale |
| S | With standard scale 0...9, 100 graduations |
| KS | With customized scale |
| d1 | d2 H7 Bore with keyway K | d3 | d4 -0,2 | d5 | l1 | l2 | l3 | |
|---|---|---|---|---|---|---|---|---|
| 66 | K 12 | K 14 | 52 | 55 | 5,5 | 44 | 9 | 40 |
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The anti-backlash mechanism which operates on the principle of a bidirectional freewheeling and antireversing basis allows the transfer of movement in both directions without backlash. The adjustable knob is not suitable for applications on machines or equipments which are exposed to vibrations. The bushing is connected by the key and keyway to the revolving shaft. The location ring remains static and centrally positioned by the bushing and the two pinch rollers, fixed to the machine frame or housing by three screws. The rotating knob with the knurled barrel is carried by the bushing. The scale ring is firmly anchored to the bushing and the driven shaft by two countersunk screws. If the knob is repositioned, one of the follower pins – depending on the direction of rotation – pushes the pinch roller against the pressure spring into an idling position which releases the bushing and shaft to rotate freely. The second follower pin on the opposite side reduces the movement of its pinch roller and ensures at the same time a firm grip and forward movement of the bushing while the first pinch roller remains in an idling position. When releasing the knob, the pressure spring will push the pinch roller back into the grip position, thus linking the bushing again with the static section. The scale ring is connected firmly with the bushing and any readjustment of the shaft can be accurately controlled. This infinitely adjustable knob cannot, however, be used in such cases where the shaft to be adjusted runs ahead of the adjustment. The anti-backlash mechanism in this knob cannot be used as a bearing for the driven shaft. |
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A perfect functioning can only be guaranteed if the shaft of the machine is positioned at a perfect right angle to the contact surface of the static part. |
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Information |
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The size of numbers and length of graduations depend on the number of graduations, quantity of numbers and the scale ring diameter. |
Our service team is available from Monday to Friday between 7:00 AM and 5:30 PM: +49 7723 6507 - 0
