Product Description:

The KB511JXX is a DC brush servo motor produced by Sanyo Denki for the K SANMOTION Servo Motors series. Designed for precision actuation in assembly stations, vision tables, and compact conveyors, the unit converts drive current into controlled shaft torque and speed so motion controllers can position loads accurately in industrial automation. Its compact housing and integrated braking capability support installation in small machines where space and rapid stopping are important for pick-and-place robots, dispensing units, and semiconductor handlers.

At the nominal operating point, the motor supplies a rated torque of 0.26 N·m at 3000 rpm, producing 80 W of mechanical power from a 24 VDC bus while requiring 5.0 A of armature current. The square 54 mm flange enables rigid mounting to planetary gearheads. A holding brake supplies 0.29 N·m, and its coil resistance is 1600 Ω, limiting heat during dwell. The brake prevents axis drift on vertical loads while keeping power dissipation modest. Continuous stall torque is 0.32 N·m, and drive sizing must also account for an armature stall current of 5.2 A and a momentary current demand of 40 A to avoid current-limiter trips.

During dynamic events, the motor can reach a peak stall torque of 2.16 N·m, transmitting short bursts of force for rapid indexing without exceeding thermal limits. System inertia matching is simplified by the rotor inertia of 0.37 × 10⁻⁴ kg·m², which supports high acceleration profiles while maintaining stability. The housing mass of 1.47 kg keeps the payload light for gantry or articulated-arm axes. A tachogenerator winding with a resistance of 26 Ω provides analog speed feedback to legacy servo amplifiers. This feedback helps the controller respond to load changes without excessive overshoot and supports connections to digital drives and analog controllers that accept the tachogenerator signal.