SH2285-5276 Sanyo Denki
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The Sanyo Denki SH2285-5276 is a stepping motor from the F SANMOTION Stepping Motors series, featuring a basic step angle of 1.8 degrees per step and a thermal class rating of Class B. This model supports an allowable radial load of 42 Newtons at 0 mm and an allowable thrust load of 3 Newtons. The motor measures 28 mm square and has an insulation resistance of at least 100 megaohms.
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Product Description:
The SH2285-5276 is a hybrid stepping motor manufactured by Sanyo Denki as part of the F SANMOTION Stepping Motors series. Designed for indexers, small stages, and pick-and-place axes, the unit converts pulse trains from a driver into accurate shaft increments for low-power industrial automation. Its compact housing also fits medical analyzers, desktop 3D printers, and miniature gantries where closed-loop servos are unnecessary. The stepping mechanism provides controlled incremental movement for applications that require repeatable positioning within a limited installation area.
Its motion resolution is based on a basic step angle of 1.8° per step, while the square frame measures 28 mm on each side, allowing direct attachment to small gearheads and brackets. The front bearing can support a radial load of 42 N at 0 mm from the shaft face, and an additional thrust load of 3 N is permitted along the shaft axis. Electrical insulation provides a minimum resistance of 100 MΩ between the windings and housing, and the dielectric strength reaches 500 VAC, allowing operation on typical driver voltages without leakage. Mechanical tolerances support precise assembly. The mounting surfaces maintain squareness within 0.1 mm, and pilot concentricity is limited to 0.05 mm in diameter. Radial play remains below 0.025 mm when a force of 5 N is applied, while shaft runout is held to 0.025 mm. The static angle error does not exceed ±0.09°.
The motor withstands shocks up to 500 m/s², helping protect the rotor and bearings from sudden mechanical impacts during operation or handling. Thermal capacity is supported by a Class B winding insulation system rated for 130 °C and a maximum permissible temperature rise of 80 K, so heat sinks or forced air are rarely needed at nominal current. Continuous operation is permitted at altitudes up to 1000 m. The design also tolerates 0.075 mm of thrust play under a load of 1.5 N without compromising bearing life. These limits support installation in compact machinery where controlled motion, low power demand, and resistance to routine mechanical loading are required.
