TDI Tech Development TurboTwin
Dresser Rand
Pratt & Whitney
Rolls Royce
TDI Turbo-Twin Starter Catalog
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T100-MS Auxiliary Air Motor is Designed for Demanding Duty Cycles of 30 Minutes or Longer

This is TDI's Most Robust Turbine Air Motor Ever!  10-60 hp@1200-2250 rpm
T100-MS Air Motors and Starters are designed as a fast and easy upgrade for auxiliary air motors experiencing heavy duty-cycles of 30 minutes or longer.   It’s also an ideal solution for applications where motor over-speed occurs due to improper supply pressure regulation or lengthy unloading -- such as problematic oil priming pumps.  

T100-MS shown here as dual applcation auxiliary air/gas motors for primary
and back up wet seal oil pumps on a Soar Centaur Gas Turbine Engine

With T100-MS mist-type lubricators for the air/gas supply are not required.   This robust unit comprised of lightweight steel and metal alloys is highly tolerant to wet or – even your most contaminated air/gas supply.   There are no plastic parts. Like all TDI TurboTwin products, expect extremely long life and high performance when installed properly.


  • Wet-sump (splash) oil lubrication of planetary gear set & bearings

  • Sealed (ventless) gearbox with sigh glass for oil level monitoring

  • Higher speed rated turbine bearings

  • High spec, double-lip shaft seals

  • Nitride planetary ring gear

  • Higher precision balanced turbine rotors

  • Additional labyrinth primary seal

  • Proprietary gearbox venting

  • Balanced pressure venting of sealed rear bearing


Seamless & Economical
Retrofit For
From Air Research,
Honeywell and Parker

The Industry's Most Reliable Clutch

TDI's unique Sprag Clutch evenly distributes torque across 22 points of contact (compared to three on typical systems) which reduces wear by over 400%, extending life, assuring reliability, and eliminating the need for temperamental ramping controls.

When ordering the T100-CS Centaur starter conversion kits, the new heavy duty T100-MS heavy duty motor can now be specified.