Wellman Wacoma Limited
Our Products
Mechanical Power Transmission

Resilient Couplings

Resilient CouplingsGlobally accepted by all engineering sectors for its unique shock absorbing and detuning properties, Resilient Couplings have earned the reputation of being ideal for drives where trouble-free operation is essential. The coupling acts as a mechanical fuse for the drive system, helps in altering the torsional vibration frequency, and prevents build up of resonance in the system. Ranging from various applications in Industries like power, steel, sugar, paper, mines, chemical, etc., where reliability is of paramount importance, Wellman Wacoma's standard designs range from .005 H.P. to 50 H.P. per R.P.M. However, much larger couplings of 2,000 H.P. per R.P.M. have been, and can be, supplied.

Tyre Couplings

Tyre Couplings The flexible tyre coupling is a "Torsionally Elastic" coupling, which minimizes misalignment and maximizes power transmission for optimum machine runtime. The Wellman Tyre Coupling is popular due to its maximum misalignment capacity of 6 & end float upto 12mm, through the elastic property of Vulcanized Rubber bonded together with alternating piles of Synthetic Chord tyre, which can be used up to 60 C temperature. For adverse operating condition like oil & grease contamination, Nitrile Rubber compound tyre, which can take care of up to 70 C temperatures, can be used.

    Salient Features:
  • Backlash Free
  • Low Maintenance
  • Torsionally Flexible
  • Absorbs Misalignment
  • Dampens Vibrations and Torsional Oscillations
  • Easy Tyre Replacements

Taper Grid Resilient Couplings

Taper Grid Resilient Couplings The Wellman Taper Grid Resilient Coupling has unique shock absorbing and de-tuning properties. The Taper grid is made of specially rolled high tensile taper section alloy spring steel material with particular technical care in shape formation, followed by hardening and tempering by controlled process.
The unique design of hub teeth profile facilitates the gentle insertion of the taper grid into the taper grooves on the hub periphery during installation and maintenance. Thus, it gives long life in transmitting progressive load under torsional shock condition.

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Flexi Disc Couplings

Flexi Disc Couplings The Wellman Flexi-disc Coupling is torsionally rigid with zero backlash ideal for use as non-lubricated couplings for Pumps, compressors, fans, Turbines, Blowers and other rotating equipments. It transmits mechanical power to driven machines through shaft mounted hubs connected by the coupling and flexible disk packs. Both angular and axial misalignments are accommodated by the flexible disc packs.

    Salient Features / Advantages:
  • Low Maintenance
  • Minimal End Thrust and Bending Moments
  • Significant levels of Angular, Radial & Axial Misalignments Accepted
  • Excellent Power to Weight Ratio
  • Zero Backlash
  • Can Be Adapted to Operate in Explosive Environments to Cater to "Spark Free" Requirements
  • Minimum Residual Imbalance

Gear Couplings

Gear Couplings The pioneering Stub Teeth design, manufacturing efficiency, stringent quality control and attention to detail make the Wellman Gear Couplings acceptable in all kinds of industrial applications both in India and abroad. The unique Hub teeth are designed with crowned tooth formation on three surfaces-tip flank and root to cause maximum contact at the strongest part of the tooth and to accommodate shaft misalignment.

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Cardan Couplings

Cardan Couplings In systems where the drive and driven shafts are apart from each other, an interconnecting cardan shaft is used with either gear couplings or resilient couplings at both ends. A unique combination of Resilient and Gear coupling at either end of the Cardan Shaft can also be designed, where the gear side accommodates the misalignment and the resilient side absorbs the torsional vibrations. Cardan Couplings are especially useful from the maintenance point of view, since foundations need not be disturbed in case of removal or replacement of couplings.

Pin Bush Couplings

Pin Bush Couplings The Wellman Bush type Flexible Coupling is of the cushioned drive type, transmitting the torque through high tensile steel bolts to the machine input. Highly developed rubber compounds are used in bushes to absorb shock, tensional vibrations and slight misalignments.
Simple and compact in construction, Wellman Pin Bush Couplings are capable of transmitting high torques at maximum speeds. The flanges are manufactured from cast iron I.S. 210 Grade FG 200. This type of coupling permits drives in either direction and requires neither lubrication, nor adjustment after fitting. The flexible bushes remain unaffected by water, dust and atmospheric conditions.

Torque Limiters

Torque Limiters The Wellman torque limiter can be installed in any drive system to safeguard against sudden surges or gradual build up of torque. They ensure disengagement of the drive on overload, leaving the flange jaws free to rotate on the bearings.
They drastically cut costs and save money, as the initial outlay is normally more than covered by saving of down time during the first overload.


  • Interchangeability of Gear Coupling
  • Interchangeability of Taper Grid Coupling
  • Interchangeability of Resilient Coupling
Click to view interchangeabilties
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