The RAM-MSD 2-Speed spindle gearbox is designed to extend the constant power range of spindle drive motors and provide:

  • High torque at low speed for hogging out steel or titanium
  • High speed for finish machining aluminum.

The RAM-MSD two speed gearboxes are designed for in-line integration between a water cooled motor and a spindle inside of a machine-tool RAM as shown below:


This compact, light-weight design matches the latest spindle drive motor technology and offers:

  • Hollow through bore to facilitate a draw bar and through spindle coolant
  • Round Housing to fit inside of RAM bore and share motor coolant supply
  • Remote pneumatic or hydraulic speed change compatible with CNC control
  • Quiet minimum vibration operation to match spindle requirements

View our other 2 speed gearbox designs here

The RAM-MSD Range consists of:

  • 3 different sizes
  • Two ratios 1:1 and ~5:1
  • Power up to 150 HP @ 1500 RPM
  • Output torque up to 2575 Lb.Ft. (3500 NM)
  • Input speeds up to 8000 RPM
  • Speed change remote actuation by pneumatic or hydraulic actuator
  • Ratio Controlled by integrated proximity switches
  • Efficiency of 97%
  • Quiet, minimum vibration with ground and crowned gearing
  • Compact planetary design
  • Low backlash ensures position control for tool change and contour cutting
  • Spindle quality input and output bearings

Product PDF files:

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