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SF-DVF

SF-DVF
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MOTOR SPRINGS SF-DVF Stainless steel M-| = Torque at 1.5 and 2.5 coils pre-tension for 10 and M22 =Torqueatat maximum torsion lOand 20 coils Nc = Lifespan, guideline value 250000 oscillations Dj = Internal housing diameter Material: Stainless steel EN 10270-3-1.4310 Nominal torque without effect from friction stated. Motor spring for circular motion in max 10 and 20 coils, except pre-tension as specified below.The spring is usu- ally positioned in a housing with the outer hook located around a pin or in a slot on the housing with the smallest internal diameter as specified below. It can also be placed in a larger housing, but with an associated decrease in force. It should be positioned on a shaft with a groove in it, in accordance with the dimensions listed below. It is also possible to slightly increase the diameter of the inner coil for placement on a larger shaft. To minimise friction, the spring should be lubricated when it is fitted and the coils separated. If no lubrication is applied, there may be a reduction in spring force of up to 20%. If more torque is required, two or more springs can be placed next to each other. In such circumstances, it is preferable to position a washer between the springs. Motor springs are supplied with a protective ring or nylon band that must be removed during assembly.The spring should be handled with care and held using a suitable tool whilst it is being positioned in the housing.

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