6SM 77S-3000-G-09 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen 6SM 77S-3000-G-09 is part of the 6SM Synchronous Servo Motors series and provides a rated power of 4 kW with a rated speed of 3000 rpm. This servo motor features a rated torque of 12 Nm, operates on a mains supply voltage of 400/460 V, and has a peak current of 40 A. It includes a brake voltage of 24 VDC and a standstill torque of 17 Nm.
Internal Product Review
The 6SM 77S-3000-G-09 is a Kollmorgen synchronous servo motor that delivers 4 kW rated power and 12 Nm rated torque for demanding motion applications. With 3000 rpm rated speed and 17 Nm standstill torque, the motor shows excellent suitability for fast indexing and stable holding performance. A 40 A peak current capability is a strong highlight for dynamic servo response.
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Product Description:
The 6SM 77S-3000-G-09 is a synchronous servo motor manufactured by Kollmorgen and supplied through the 6SM Synchronous Servo Motors series. It is intended for closed-loop positioning and velocity tasks in automated machinery, where the motor’s electromagnetic field follows drive commands for accurate shaft control. When connected to a suitable servo amplifier, the unit converts electrical energy into controlled mechanical torque and speed, providing a compact actuator for packaging lines, pick-and-place axes, and other precision motion stages.
The stator windings are designed for a supply connection of 400/460 V, and the motor draws a rated current of 8 A during continuous operation. Under these conditions, it delivers 4 kW of mechanical power while maintaining a synchronous speed of 3000 rpm. Rated torque reaches 12 Nm, supported by a torque constant of 1.70 Nm/A and a coil resistance of 1.1 Ω, so the drive can predict load response accurately. The motor has a 24 VDC fail-safe brake that clamps the shaft when power is removed, allowing vertical axes to hold their position. A voltage constant of 103 V per 1000 rpm indicates the back electromotive force sensed by the amplifier during dynamic control. The total inductance is 8.3 mH, which helps control current ripple at pulse-width modulation frequencies.
For short-term demands, the winding can accept a peak current of 40 A, producing high acceleration without saturation. Dynamic moves are also influenced by a rotor inertia of 18 kgcm², which balances responsiveness against load matching. Thermal behavior is characterized by a 30-minute time constant, and an internal thermostat opens at 145 °C to protect the insulation before critical temperatures are reached. Standstill operation permits 10 A of current and provides 17 Nm of holding torque, giving stable static force while the servo loops remain active. The fail-safe brake provides separate mechanical holding when electrical power is unavailable, while active holding torque remains available during powered operation.
