LS-Series Linear Stages

About the LS-Stages

LS linear stages provide sub-micron accuracy, deriving their precise control by using closed-loop DC servomotors and employing high-resolution rotary encoders for positioning feedback. An optional linear encoder can be added to the unit to provide even greater positioning accuracy.

The stages utilize crossed-roller slides, precision lead-screws, and zero-backlash miniature geared DC servomotors for smooth and accurate motion. The units offer precise travel from 50 mm to 300 mm (2” to 12”). They can be used singly or stacked, vertically or horizontally, and can carry loads up to 4.5 Kg (10 lbs).

The units have built-in limit switches, and can be configured with a number of lead screw options as outlined in the table below. In standard rotary encoder configuration and using ASI’s MS-2000 control electronics, resolutions in the 50-to-100 nm range can be easily obtained. Repeatability factors of less than 300 nm RMS are also obtainable.

An optional linear encoder provides a scale resolution of 10 nm, and with a scale accuracy of ± 3 μm per length of scale.

The MS-2000 controller provides automatic backlash correction, accepts industry standard commands, and accepts RS-232 or USB communication from a host computer.

More Info

Specifications
LS-Series Linear Stage Specifications 
Specifications LS-50 LS-100 LS-200
Resolution < 0.1 μm < 0.1 μm < 0.1 μm
with Linear Encoder* 10 nm 10 nm 10 nm
RMS repeatability (typical) < 0.7 μm < 0.7 μm < 0.7 μm
with Linear Encoder* (typical) 200 nm 200 nm 200 nm
Accuracy 0.25 μm per mm 0.25 μm per mm 0.25 μm per mm
with Linear Encoder* ± 3 μm per length of scale ± 3 μm per length of scale ± 3 μm per length of scale
Maximum velocity 1.6 mm/sec

w/1.59 mm pitch lead screw

1.6 mm/sec

w/1.59 mm pitch lead screw

7.0 mm/sec

w/6.4 mm pitch lead screw

Range of travel 50 mm (2”) 100 mm (4”) 200 mm (8”)
Length 152.5 mm (6”) 203.5 mm (8”) 305 mm (12”)
including connector 181 mm (7 1/8”) 232 mm (9 1/8”) 333.5 mm (13 1/8”)
Width 69 mm (2 ¾”) 69 mm (2 ¾”) 69 mm (2 ¾”)
including top plate* 102 mm (4”) 102 mm (4”) 102 mm (4”)
Height 35.5 mm (1.4”) 35.5 mm (1.4”) 35.5 mm (1.4”)
including top plate* 45 mm (1 ¾”) 45 mm (1 ¾”) 45 mm (1 ¾”)
Weight 1.4 kg (3 lbs) 1.9 kg (4 lbs) 2.4 kg (6 lbs)

** Linear Encoder Option requires installation of the top plate

Lead Screw Options
LS-Series Linear Stage Lead Screw Options
Lead Screw Pitch Options Rotary Encoder Resolution Maximum Speed
25.40 mm (Ultra-coarse) 88 nm 28 mm/sec
12.70 mm (Super-coarse) 44 nm 14 mm/sec
6.35 mm (Standard) 22 nm 7 mm/sec
1.59 mm (Fine) 5.5 nm 1.75 mm/sec
0.635 mm (Extra-fine) 2.2 nm 0.7 mm/sec

*Shown with rotary encoder and 6.35 mm pitch lead screw

Datasheets
LS-Series Linear Stage Datasheets

LS-Series Linear Stages Datasheet