Newport 850G-HS1624 Linear Actuator. Includes manual.

These actuators are powered by a low inertia DC motor to provide smooth movement with low acoustic and mechanical noise. Submicron resolution is obtained with a precision-rolled and electropolished stainless steel leadscrew driven through a low backlash reduction gear. The overall drive train backlash of approximately 15µm can be compensated by Newport controllers. Bi-directional repeatability to 1.0µm can be achieved through this feature.

Actuator's will come with manual.

The 850G actuator incorporates a versatile design which can be configured with travel limits from as little as approximately 1/32 inch to 2 inches (0.8mm€“ 50mm), enabling it to be used on a wide variety of Newport translation stages and mirror mounts. Mechanical limit switches cut motor power preventing accidental over-travel. The actuator incorporates a manual actuation knob for coarse adjustment (with the motor power off). To provide accurate motion, the actuator€™s 3/16 inch diameter plunger is non-rotating. The standard gearbox ratio actuator can produce a maximum thrust in excess of 25 pounds (11 kg); but, when operating continuously over many cycles, the maximum load is rated at 18 pounds (8 kg). The actuator€™s internal structure is a precision-rolled leadscrew with a 0.8mm pitch. The pitch of the leadscrew has been chosen to provide the same encoder resolution when combined with the standard gearbox ratio (See table section 3.4). Production variations about this average figure can be compensated by Newport controllers via software commands allowing the user to limit cumulative, monotonic inaccuracies to within 0.005%. A non-rotating low friction Turcite nut engages the leadscrew and pushes the plunger. A Turcite half-nut is used to trigger a travel limit in the extended position while the lead screw nut trips the limit at full retraction. The limit switches are repeatable to approximately 40µm.