Ekstrom-Carlson SM-C98 Spindle Motor

The Ekstrom-Carlson SM-C98 Spindle Motor is a high-speed AC spindle designed for CNC routing, milling, and cutting, delivering precision rotary motion in continuous-duty operation. Key specifications include 8 HP rated power, 18,000 RPM maximum speed, 380 VAC three-phase supply, 12.6 A current, and a maximum collet size of 3/4 in, with approximate dimensions of 3.2 in W × 4.7 in H × 14.6 in L and a weight around 35 lb. Cooling is handled by an external cooling fan, and the unit uses sealed ABEC 7 spindle bearings to support reliable high-speed performance. Designed for replacement, retrofit, or upgrades in CNC routers, woodworking machines, plastic fabrication equipment, aluminum machining centers, and automated machining systems, this spindle is commonly used in environments requiring high spindle speeds and precision cutting; common replacements include Ekstrom-Carlson SM2-C98, SM2-C99, and Mitsubishi SJ-D Series CNC spindle motors.