The SM1503 is a 3 horsepower (2.2 kW) servo motor that has been developed as a lower priced alternative to the STC1503. The SM1503 uses the same 15,000 rpm high speed motor from the STC1503, but without the automatic collet release. Instead, a manual “ER” Series collet is used to clamp the tool shaft. This means that operator intervention is required when the media needs to be replaced. For applications where the abrasive or the tools have a long life the manual collet is the ideal solution. Four fasteners easily mount the SM1503 on a AFD1000/70 carriage.