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High speed T-shape gearbox, 28 500 rpm ! Automotive industry

4 November 2019
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This gearbox is just the fastest T-shape gearbox we have designed with its 28 484 rpm. It will be very soon integrated to an emotor test bench for the automotive industry.


boite en T pour banc d'essai de moteurs électriques




  • Power : 2 x 300 kW
  • Input speed :3 200 rpm
  • Output speed : 28 484 rpm
  • Maximum torque HS: 674 Nm
  • Maximum torque LS : 6 000 Nm
  • Weight : 1 380 Kg


Gearbox for train and tramway e-motor test bench

13 September 2019
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The speed increaser SP 3600/4 was designed to become integrated into an existing testing cell to test in particular the last generation of traction motors. Thus it is custom-made and provided with its lubrication unit. The size of the gearbox is already big (5m wide) and it gets embedded into a 20t BCSA manufactured baseframe of 8m X 5m.

On a performance level, each line can transmit 1MW power with automatic clutch depending on the specified speed.


Mutiplicateur pour banc d'essai de moteurs ferroviaires




  • Power : 2 100 kW
  • Input speed :1 400 rpm
  • Output speeds :
    5 000 / 7 500 rpm
  • Max torque : 5 590 Nm
  • Weight : 15 t


Speed increaser for engine endurance tests

6 July 2019
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This speed increaser is an evolution of the T-shape gearboxes for which we have gain a sound expertise through the 20 units and more manufactured. Thus we found the usual bevel gears but also intermediary gear trains allowing a vertical offset easily recognizable with this impressive column. This offset is made to answer the best as possible our customer dimension needs. Unlike the other T-shape gearboxes mainly used for test benches, this one is designed for production line with 50 000h lifetime as it is used for engine validation.


Multiplicateur pour équilibreuse




  • Power : 2 x 375 kW
  • Input speed : 12 000 rpm
  • Output speed : 7 850 rpm
  • HS maximum torque : 1 600 Nm
  • Weight : 1 100 Kg


This T-shape gearbox has a phonic wheel embedded for rotational speed measurement and is also equipped with a torquemeter on HS side. The very low gear backlash gives the test system durability in every validation steps.

Speed increasers for aircraft turbine test bench

5 July 2019
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Heavy and robust, those speed increasers are built for high performances. The two high power gearboxes are designed with a vertical offset to answer specific customer constraints and integrate torquemeters flanged to the casing. They can transmit torque from 10 000 to 70 000 Nm at high speeds up to 12 000 rpm. The two speed increasers are part of an aircraft turbine test bench


Speed increaser for low pressure turbine test bench


Multiplicateur pour banc d'essai de turbine basse pression




  • Power : 14 000 kW
  • Input speed : 3 500 rpm
  • Output speed : 1 726 rpm
  • HS maximum torque : 70 000 Nm
  • Weight : 10 900 Kg


Speed increaser for high pressure turbine test bench:


Multiplicateur pour banc d'essai de turbine haute pression




  • Power : 8 000 kW
  • Input speed : 12 000 rpm
  • Output speed : 4 634 rpm
  • HS maximum torque : 10 000 Nm
  • Weight : 3 700 Kg


Boisset & Cie BC SA becomes BCSA GEAR

9 April 2018
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The continuity is there for BCSA GEAR celebrating its 20 years.

M. Boisset hand over to M. Montillet

Left to right, Mr David Montillet and Mr Jacques Boisset

Indeed it was in 1998 when Mr Jacques Boisset took over MAAG France activities establishing Boisset & Cie BC SA. At BCSA GEAR everything accelerates and the last months were eventful.

Last June Boisset & Cie BC SA becomes BCSA GEAR, and the company changes hands. Thus it is with a lot of emotions that Mr Jacques Boisset is getting a well-deserved retirement and hands over the company to Mr David Montillet and Mr Christophe Boisset. Indeed the previous CEO made the choice of a continuity for the company keeping all activities, its organization and dynamism. A page turns but the BCSA GEAR story continues.