| MECHANICAL VARIABLE SPEED DRIVE | |
 |
WORKING PRINCIPLE |
| It works on principle
of friction drive through conical rollers having metal to metal contact
with driving and driven elements through an extremely thin elastohydrodynamic
film of lubricant between contact surfaces effecting smooth transmission
of power. The double conical rollers effect power transmission by its rolling action. Conical rollers are freely mounted in needle bearings in the roller carrier. |
|
| The to-and-fro
motion of the carrier through a rack and pinion arrangement makes different
diameters of the cones to come in contact with driving and driven component
resulting in infinite speed variation. These two different positions explains
how speed variation is achieved. All moving parts including bearings are continuously splashed/forced lubricated. |
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| SALIENT FEATURES | |
| Speed Variations | |
| By feeding
fixed speed to Variator, stepless speed variation can be obtained from Max. speed = 1.7 x input speed to Min. speed = 1/7 x input speed Max. speed = 12 : 1 to 3:1 depending upon selection. |
|
| Torque Multiplier | |
| When speed is reduced, variators can replace Gear Boxes. | |
| Speed Multiplier | |
| Upto 1.7 times input speed without necessity of speed increasing gear. | |
| High Output Torque - Over Load Capacity | |
| Upto the standstill of an electric motor of the same power acting as a mechanical clutch. | |
| High Efficiency | |
| Overall 85% throughout full speed range, ideally used for constant power transmission applications in all types of industries. | |
| Speed Holding | |
| Quite stable with uniform load and within 0,25% with Max. load. | |
| Reliability | |
| Drive is highly reliable with long life as load is equally distributed on number of conical rollers which are hardened and ground to close tolerance. | |
| Simple Design | |
| Can be attended to by skilled fitter as no electronic/electrical parts/circuits are involved. | |
| Compactness | |
| High Power Transmission capacity with small dimensions. | |
| Speed Control | |
| Quick and simple. By rotating control knob, in running condition only. | |
| Free From Noise and Vibrations | |
| No moving parts like Chains, Belts, etc. Drive is through rolling action of PRECISION ROLLERS which are continuously lubricated. All components are well balanced. | |
| Bidirectional Rotation of Output Shaft | |
| Clockwise / Anti Clockwise depending upon Input shaft rotation, viz Anti Clockwise/Clockwise respectively. | |