Our products are only available under a global license arrangement. Please contact our SALES team if you would like to discuss license options on any of our product range.

Mathers Vane Coupling MVC


The Mathers Vane Coupling cartridge can be used in an engine to drive a super charger, to assist a turbo charger and can also be used in electric drive systems.

The principal of operation of the Mathers Vane Coupling is quite simple, however our minds keep thinking of a vane pump where the ring is held stationary while the rotor and vane rotate creating pumping chambers. If the outlet was to be blocked, the energy can not go anywhere and a catastrophic failure occurs. If the ring is connected to an output shaft and allowed to spin, the ring and rotor compress the oil against the ring contour and imparts rotary force on the ring.

Torque is Pressure X Displacement so by controlling pressure we can control output torque

The vane coupling drive can have roller tipped vanes to reduce friction between the vane tips and the ring contour. An in built remote controlled balanced piston relief valve controls pressure in the pressure chambers and by passes flow internally. Torque is (Displacement x Pressure) and by controlling pressure we control output torque.



The Mathers Vane Coupling includes the following:

  • On/Off non-burn out clutch
  • Remote variable torque
  • Soft start feature
  • Torque fuse
  • High efficiency
  • High power density 100 Hp approx 6’’ DIA
  • Power transfer potential of Megawatts

Super and Turbo Chargers

As with the fan drive coupling, it is possible to install a coupling cartridge in an engine to drive a super charger or assist a turbo charger. Turbo chargers are a great product as they use exhaust gas energy, which would be wasted any way, to increase inlet air pressure for better fuel – air mix. However turbos suffer from a thing called lag, which is effectively when a engine accelerates the turbo speed increases after the event. Many variable, dual and other variations of turbo charging are being worked on to reduce this effect. Super chargers on the other hand give their best result on acceleration as they are driven directly by the engine and increase inlet air pressure during acceleration, but they waste energy at constant speed where turbo chargers are at their best. By driving the super charger/ turbo impeller with a fluid coupling on acceleration and letting it freewheel when exhaust gas energy is sufficient for operation we can have the best of both worlds. The highest fuel demand from the engine is on acceleration, so by matching fuel and inlet air to the best possible recipe creates the best fuel burn (energy from fuel) and reduces exhaust emissions. Again these can be supplied in cartridge form and designed into the engines using engine oil as its medium.

Electric Drive Systems

The Mathers Vane Coupling offers major benefits for many electric drive systems, by allowing motor start up under no load, soft start of load, controlled torque increase for load inertia and acceleration. Maximum torque can be set on the coupling reducing electric motor burn out. This system reduces "in rush" current and will allow electric motors to be sized for work load not start up loads. The coupling cartridge can be incorporated into the electric motor or gearbox assembly. Constant peak pressure in the coupling can be monitored and warnings or system shut down effected.

For an Information Pack including operational DVD on the Mathers Vane Coupling, please contact the Mathers Hydraulics SALES team.



FPMC 2014 September 10-12 - University of Bath 01/05/2014 pdf

An Efficient Fan Drive System Based on a Novel Hydraulic Transmission.

Mathers Hydro-Mechanical Transmission - Striking The Right Balance 01/05/2014 pdf

An article by Jack Burke in the Diesel Progress magazine, on the Balance

The Sweet Spot for Hydraulic Drivetrains: Midsized Turbines 28/04/2014 pdf

An article by Paul Dvorak, in the WindPower Engineering & Develo

Mathers Hydro-Mechanical Transmission (HMT)
Awarded 2 year Research Grant by CCEFP
26/03/2014 pdf

Centre for Compact and Efficient Fluid Power (,  a NSF ba

The Secret to Leak-Free Hydraulic Connections 01/06/2013 pdf

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Event Hosted by Engineers Australia 03/11/2011 pdf

Event Hosted by Engineers Australia  Norm Mathers - Guest speak

Improved Safety and Efficiency of Trucks 11/09/2011 pdf

Discussion on improving cooling efficiency and ambient capability of hea

Seals Provide Leak-Free Solution For Fittings 09/08/2011 pdf

The Flaretite Seal is a metal stamping, designed with multiple, concentr

Flaretite Seals Solve Nuclear Problem 15/09/2009 pdf

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Mathers FSV- Fuel Saving Pump 01/06/2008 pdf

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The Mathers FSV in Efficient Cooling of Heavy Trucks 16/05/2008 pdf

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Investment Opportunity

All investor enquiries should contact, in the first instance.

Due to its potential growth and requirements for future capital, opportunities are available for sophisticated investors who wish to become involved at the introductory stage of this revolutionary new patented technology.

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Distribution Opportunities

All OEM and manufacturer enquiries should contact, in the first instance.

For OEMs and manufacturers interested in trial programs, please register your details below. Please note that Mathers Hydraulics Technologies has entered into trial programs in waste collection, power steering and tipper/dump operations with both pump and fan drives and is interested in additional partners for 2013 and beyond.

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Research licences

Research licences for transmissions using the Mathers’ hydrostatic torque converter and torque amplifier are available for research institutes and major transport  and machinery companies.

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