Polydrive

Nagdevi, Mumbai, Maharashtra

Polydrive Tyre couplings provide all the desirable features of an ideal flexible coupling, including Taper Lock fixing in India. The Polydrive Tyre coupling is a "torsionally elastic" coupling offering versatility to designers and engineers with a choice of flange combinations to suit most applications.The flanges are available in either F or H version Taper Lock fitting or bored to size B. With the addition of a spacer flange, the coupling can be used to accommodate standard distance between shaft ends and facilitate pump maintenance. Polydrive Tyre couplings can accommodate simultaneous maximum misalignment in all planes without imposing undue loads on adjacent bearings and the excellent shock-absorbing properties of the flexible tyre reduce vibrations and torsional oscillations. Polydrive tyres are available in natural rubber compounds for use in ambient temperatures between -50°C to +50°C Neoprene rubber compounds are available for use in adverse operating conditions e.g. oil or grease contaminations and can be used in temperatures of - 15°C to + 70°C F.R.A.S. tyres are available for use when fire-resistance and antistatic (F.R.A.S.) properties are required.

Torque-bore range :

The range includes couplings with torque capacity upto 12606 Nm. and bore diameters upto 190 mm.

Misalignment :

Handles parallel, angular and axial displacements, either singly or in any combination. They can accommodate parallel misalignment upto 6 mm, angular misalignment upto 4O and end float upto 8 mm.

Torsionally Soft :

Cushions against destructive shock loads protecting the complete system, preventing expensive breakdowns and lengthens machine life.

Free of Backlash :

Does not create 'snatch' on take up of the drive.

Installation :

Requires neither special tools nor skilled labour to assemble. Alignment is quickly checked by placing a straight edge across outside diameter of flanges. The split flexible tyre is then positioned in the flanges and the screws tightened into place.

Damping :

Reduces vibration and torsional oscillations developed in internal combustion engines, the amplitude of which increases greatly at critical points in the speed range. Polydrive Tyre coupling dampens these destructive vibrations.

Maintenance :

Because there are no moving parts, no lubrication is required. Periodic visual inspection of the tyre is all that is necessary.

Easy Element Replacement :

To replace flexible element simply loosen the clamping screws, remove the tyre and replace with a new one. It is not necessary to move either driver or driven machine or coupling flanges.

Environment :

Use of natural or Neoprene rubber compounds makes the Polydrive Tyre coupling suitable for use in most conditions. For fire hazard areas the F.R.A.S. tyre is recommended. This allows free flow of electricity between the two shafts to avoid static electricity build up.

Details required for coupling selection

Type of driven machine and operating hours per day.

Speed and power absorbed by driven machine (if absorbed power is not known, calculate on power rating of prime mover).

Diameters of shafts to be connected.