Quiet 3-to-1 Speed Reducers Using Traction Drive Technology Feature 98% Efficiency

EIN RMI speedreducer 400

May 21, 2019

Rolling Motion Industries (RMI) has released for production the next two in it’s series of highly efficient speed reducers. These 3-to-1 speed reducers use “game changing” traction drive technology. The MAR-17-1-3.1 and the MAR-23-1-3.1 Speed Reducers feature 98% efficiency and with only 6 moving parts they typically out last conventional gearboxes and speed reducers by a factor of 3. The MAR17-1-3.1 Speed Reducer is designed for input speeds up to 3600 rpm with 10 to 20 in/lbs of torque, and the MAR-23-1-3.1 Speed Reducer is also rated for speeds to 3600 rpm but with an input of 20 to 30 in/lbs of torque. As the output speed is reduced by a factor of 3 the output torque increases by a factor of 3.

Using an engineered traction fluid with a coefficient of friction of just 0.1 to 0.12 that cools and lubricates the traction drive these high efficiency speed reducers generate up to 72% less heat even after days of continuous operation. There is no slippage or lost motion between the input and output shafts even though there is no metal to metal contact as the traction fluid is continuously changing from liquid-to-solid-to-liquid as the driving and driven elements interface in the drive. Creating 38% lower dB at 3000 rpm than conventional gearboxes these people friendly speed reducers are ideal for use in medical equipment such as mobile hospital equipment and dialysis machines as well as pumps, blowers, fans, turbo and super chargers, conveyers, HVAC systems, and other power transmission and motion applications.

Having low vibration, and no torque losses from 10 to 3000 rpm, these speed reducers featuring traction drive technology lets a motor operate at peak efficiency while having a damping effect on a motor’s torque ripple. These revolutionary speed reducers are available with an optional overriding clutch. Incorporating standard NEMA mounting dimensions, these speed reducers can be easily integrated into new and existing applications.

Go HERE for more information

Related Articles


Latest Articles


Changing Scene

  • Apply for ECAO 2026 Scholarships

    Apply for ECAO 2026 Scholarships

    July 31, 2026 It is that time of year again when ECAO are offering scholarships to post-secondary graduates for children or wards of salaried employees of ECAO Member Companies. The scholarship was launched in 2004 and awards 5 successful recipients with a scholarship of $5,000 each. The scholarship will be awarded to outstanding students enrolling… Read More…

  • Toronto Pearson Extends Transformation with $1.5B in Terminal Modernization

    Toronto Pearson Extends Transformation with $1.5B in Terminal Modernization

    July 31, 2026 Toronto Pearson has announced contracts to NORR-DIALOG and PCL Construction, who will design and construct another major infrastructure program. The $1.5-billion investment to launch the Terminal 1 and Terminal 3 Revitalization Program has been awarded to NORR-DIALOG, a joint venture between two firms both Ontario-incorporated, and PCL Construction, a global firm created and headquartered… Read More…

  • D.A.D. Sales Welcomes new Team Member – Tom Graham

    D.A.D. Sales Welcomes new Team Member – Tom Graham

    July 31, 2026 D.A.D. Sales announced the addition of Tom Graham as Construction Sales Representative on the D.A.D. Sales team, supporting Northern Alberta. “Tom brings valuable industry experience, a strong understanding of the construction market, and firsthand insight as a skilled tradesman. He understands our customers’ businesses and the realities they face in the field.… Read More…

  • Franklin Empire Opens New Full-Line Branch in Peterborough

    Franklin Empire Opens New Full-Line Branch in Peterborough

    July 31, 2026 Franklin Empire is pleased to announce the opening of their new Peterborough branch, bringing together electrical, automation, and Process Instrumentation expertise under one roof. This new location expands their ability to better serve contractors, industrial facilities, OEMs, municipalities, and commercial customers throughout the Peterborough region with a complete range of products, technical… Read More…