Chaper 1 Overview; Description - THORLABS Z8 Series User Manual

Chapter 1 Overview

1.1 Description

Thorlabs has developed this series of high-resolution motorized actuators for use in
high precision applications. From drop-in replacements to custom mounts, these
motorized actuators will satisfy even the most demanding requirements. Three
different travel lengths are offered; 6.0 mm, 12.0 mm and 25.0 mm.
The Z812B and Z825B actuators are shipped with a clamping bush fitted, ready for
use with a 3/8" barrel mount. The Z806 and Z812 actuators thread into a ¼" -80
mounting bush.
The Z800 series Motorized Actuators use a 6V DC servomotor that provides sufficient
torque for high load capabilities. Utilizing a 67:1 gear reduction head and a 512 counts
per rev precision encoder gives a minimum resolution of 29 nm. The actuators allow
very small step sizes over the entire travel range, delivering greater flexibility with
negligible backlash and fine resolution. The DC servomotor allows for continuously
variable speeds while the optical encoder allows closed loop operation. The actuators
use integrated hard stops that automatically cut the power when they have reached
their mechanical limits.
The Z800 series Motorized Actuators are light, compact, and extremely durable. They
are ideal for use in mirror mounts, translation stages, microscopes, OEM applications,
and a wide variety of other components that require higher precision than most
standard drive mechanisms allow.
Rev 15 Aug 2018
Fig. 1.1 Z8 Series Actuators
Chapter 1 Overview
Page 1