Encoder Measuring Wheels

New to the Reliance standard range, our encoder measuring wheels, manufactured from aluminium and Polyurethane coated, are available with four types of knurled surface finish for measuring lengths of different materials. They have excellent rotational characteristics, maximum measuring accuracy with a reduced mass through optimised design.

The wheels are available with a 200 mm or 500 mm circumference with bores from 4 mm to 10 mm on the 200 series and 6 mm to 12 mm for the 500 series.

The encoder measuring wheels have a working temperature range of -30°C to 80°C but can operate for short periods at 100°C.

The encoder measuring wheels have optimum wear properties under severe mechanical constraints and high resistance to oils, fuels, ozone and climatic conditions.

Areas of application and materials where each type are best suited;

Smooth – Greased metals, steels, finished surfaces, plastics, paper, cardboard, wood, textile, wire, leather.

Cross Hatch – Cardboard, wood, textile, rubber, soft plastics.

Studded – Rough textile, carpet, cable, fleece, paper, cardboard, plastics

Corrugated – Un-greased metals, finished surfaces, plastics, paper, cardboard, wood, textile, glass, flooring

Installation and Housing Considerations

The installation of a bearing will usually be determined by how it fits with its mating components. Interference or transition fits provide the most positive location of the bearing, however, they will require pressing during installation. Clearance fits allow the bearing to be assembled very easily, but could potentially lead to problems depending on the operating conditions. If a press fit is required, it is essential that no appreciable force is transferred through the rolling elements of the bearing during installation.

Special care must be taken when using bearings in aluminium housings, especially when wide temperature variations are expected. It is possible for the contraction of the housing to squash the bearing raceway and remove the radial clearance required for the bearing to operate.