RollerDrive

Sankyo RollerDrive a constant lead cam with a servo motor drive for programmable motion. Our servo indexing tables provide fast, highly accurate motion, with the added capability to move medium to heavy loads. Our preloaded cam & turret provides a zero-backlash RollerDrive for all your automation needs.
Exclusive Zero-Backlash Structure

Features
- No backlash
- Rolling contact transfers power while eliminating wear
- High accuracy and excellent efficiency
- Preloadable for high rigidity
Product Line
MR Series (Ultra-compact model)
World's smallest zero-backlash positioner
- Ultra small, zero-backlash positioner
- Low maintenace : There is no deterioration in the precision of the internal parts due to aging, and the unit has excellent durability, there is no need for periodic calibration or adjustment.
- There is a wide range of motors to choose : A wide range of servo and stepper motors can be installed.
- Mounts in any position : The MR main housing can be mounted in any direction, allowing you to create various motions.

Applications

Aligment table

Turing and swiging arms

Handling unit
RGV Series (Standard model)
RGR Series (Large-Diameter model)

Applications
- Inspection machine
- Assmbly machine
- Work stocker
RA Series (Lightweight model)
Features

Backlash is eliminated entirely by maintaining constant contact between the wedge-shaped ribs on the input shaft and the roller followers under preload. Preload is adjusted by turning the adjustment mechanism on the input shaft.

The steel alloy input shaft is built to meet extremely tight tolerances using the latest in machining theory and equipment. These shafts are balanced to suppress self-excited vibration under high speed rotation.

Roller bearing construction transfers torque through the rolling action of the roller followers. Rolling contact maintains the initial accuracy, even for extended periods of use.

The output shaft has an oversized hollow bore that allows easy passage of wiring and piping, or the shaft of another device, allowing for design flexibility.

Inside the output unit, cross roller bearings are used for increased rigidity and minimal runout.

The motor shaft is rigidly clamped to the input shaft of the reducer for a direct transfer of power from the motor. The motor base is designed to absorb error in alignment during assembly (patent pending).
Applications

Settling time is instantaneous for precise positioning while speed variation during motion is minimal for accurate synchronized operation. The RollerDrive® is virtually maintenance free, resulting in a reduced cycle cost of the entire FA system.

The output shaft of the RollerDrive® has very minimal runout, which makes it suitable for precision θ-axis positioners and alignment tables. Its thin, compact design makes it ideal for X-Y stages and other positioning units as well.

Improved speed and reciprocating repeatability allows thin, profile drive layouts for compact integration, while piping and cables can easily be passed through the hollow bore in the large diameter output shaft
RU Series (High rigidity model)
Applications

Tapping machine

Glass Edge polisher

Servo press machine
Transfer device
Turn table
Automotive welding
and assembly process
and assembly process
Rotate Applications

High-speed Free-position Indexing

Oscillating and Rotating Arm

Large-size Substrate Turning

Glass Edge Polishing

Motor Core Staggering and Lamination

Broach Drive in a Turning Center

Drive a ballscrew
