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Mclennan Servo Supplies, the UK distributor for Numerik-Jena, has added a range of miniature linear incremental encoders for space-restricted applications.

With a selection of accuracy classes to +/-1um, and with resolution from 0.05um to 5um, the LIK 41 range features a fingertip-sized optical scanning head and is available with a choice of 8mm-wide self-adhesive graduated steel tape scales based upon Numerik’s Singleflex and Doubleflex standard with measuring lengths up to 1,000mm.

A glass substrate scale version is also available for measuring lengths to 100mm.

The LIK 41 series scanning head measures 24mm long x 11mm wide x 6mm deep and has a mass of 3g.

An integral 3.7mm diameter cable, up to 3m long, is terminated in a 15-pin D-sub connector that includes all signal processing and interpolation electronics using the standard RS 422, 1Vpp format.

A choice of sinusoidal or square wave signal output with up to 100x interpolation is available.

Maximum scanning frequency is 500kHz with an operational temperature range of 0C to +55C.

Numerik graduated scale steel tapes have a polished finished that is resilient to abrasion and corrosion and can be attached to customers’ equipment using self-adhesive fixing.

Singleflex versions are used for measurements where the machine element has a coefficient of expansion equal to steel.

For fixing to materials, the Doubleflex version includes a second steel strip with a flexible layer of adhesive material sandwiched between.

The intermediate layer forms a stable bond and allows differential expansion to take place without affecting the measuring standard.

Both types of tape can include reference marks for machine datum and homing.

The single tape version can attain +/-1um accuracy grades and the double version from +/-2um – the lowest accuracy class is +/-5um.

Mclennan covers the full range of Numerik linear and rotary encoders, which are available in kit form, as separate reading head and scale versions, or as completely sealed, self-contained measuring systems suited to harsh environmental conditions.

Measuring ranges up to 10m are available on linear encoders with accuracy grade to +/-1um and resolution to 0.05um.

Rotary encoders include optical grating disks in diameters up to 210mm with separate reading heads offering high levels of angular accuracy with high repeatability.

Numerik encoders are found in high-precision measurement and position feedback applications across automation technology, robotics, metrology and motion control.

Mclennan Servo Supplies

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