An optical linear position detection sensor (linear scale for short)

is a measurement feedback device that uses the optical principle of the grating to work. The linear scale is often used in closed-loop servo systems of CNC machines for linear position detection measurement. Its measurement output is a digital pulse signal, with a large detection range, high detection accuracy and fast response time.

Linear scale application area

1、All kinds of measuring machines and instruments of linear position detection measurement: spring testing machine, three-axis machine, projector, microscope

2、Digital readout system for all kinds of machine tools: lathe, milling machine, grinder, boring machine, EDM, drilling machine, etc.

3、All kinds of CNC machine tools: CNC milling machine, machining center, CNC grinding machine, etc.

4、with PLC is used for linear position detection measurement of all kinds of automatic equipment.

Linear scales application on machines 1

Optical linear scale WTB(D) Seires

Accuracy: 0.0005mm, 0.001mm, 0.005mm

output signal: TTL 5V or 24V or RS422

Available length(mm): 50-3000mm

Resolution: 0.5\1\5 μm(micron)

RI: every 50mm

Work speed: 60m/min

Standard signal: 2 TTL square wave 0°and 90°

Option signal:  4 TTL square wave 0°、90°、180°、270°

Phase error: 90°±15°

Operating temperature: 0℃—40℃

Storage temperature: -20℃—50℃

Signal cable length: 3.5m

Available scales length: a), in every 50mm from 50mm to 950mm

b), in every 100mm from 1000mm to 3000mm

This model is usually used on lathe, milling, grinder, boring machines.

linear scale dimension

Our scale’s travel length is “L” in the above image, the effective travel length is “L” plus 30mm; the center installing holes distance is “L” plus 136mm; the scales overall length is “L” plus 154mm.

For example: your lathe machine table travel is 900mm, so you need a linear scale in 900mm travel length, the center hole distance is 1036mm, the overall length is 1054mm.