Rotary Index Tables

rotary_stage_seriesST Series Variants

NIDEC-SHIMPO first developed its STH off-set hollow bore rotary gearbox for a variety of robotic handling applications that were commonly encountered within the semiconductor industry. When eventually released to general industry, this rotary stage gearbox design became extremely popular with many Custom Assembly and Test equipment builders. These OEM customers often wanted to apply the STH to a tooling fixture, end-effector, dial, etc., within their custom equipment. SHIMPO quickly expanded the variety of ratios supported for the series and the configurations available at the input side, in order to provide more flexibility and options for these turn-key projects.

SHIMPO has expanded its indexing product offering with the STR, to handle those applications that require larger overall torque carrying capacity with even finer levels of precision. To this day, we continue to look towards expanding this product category to better satisfy the needs of our loyal Custom Automation and Test OEM customers around the globe.


ST Series, Summary Level Table

Product Series Frame Size Backlash Rating Reduction Ratios
Hollow Output Rotary Actuator, High moment load with high-precision
sth_tc Smallest: 052
Largest: 078
Variety: 2
≤ 2 arc-min
≤ 10 arc-min
Minimum: 12
Maximum: 324
Variety: 9
Hollow Output Rotary Actuator, “Zero backlash”
str_tc Smallest: 040
Largest: 240
Variety: 7
Zero Backlash
≤ 5 arc-sec
Minimum: 15
Maximum: Various*
Variety: Various*