Product Details

The Danaher Motion 401-34318-20 is the FSM430 series brushless AC permanent magnet servo motor, originally branded under Giddings & Lewis and Kollmorgen, built for legacy CNC machine tool motion axes. This FSM430 servo motor converts electrical commands from matched servo amplifiers into smooth, high-dynamic rotary motion, delivering stable torque under continuous cyclic cutting and feed movement. As a reliable brushless AC servo motor, it adopts heavy-duty bearings, high-grade permanent magnets and integrated high-resolution feedback, resisting vibration, load shocks and temperature swings in harsh machine shop environments. This Giddings & Lewis servo motor is widely used as an OEM replacement spare to restore positioning accuracy for ageing machining centers and automation lines; it is stocked as genuine replacement spare part for industrial motion control systems.

Basic Parameters

Brand: Danaher Motion (Giddings & Lewis / Kollmorgen)

Model: 401-34318-20, FSM430

Type: Brushless AC permanent magnet servo motor

Rated speed: 4000 RPM

Continuous torque: 4.8 Nm

Peak torque: 14.2 Nm

Rated power: 1.8 kW

Continuous RMS current: 9.5 A

Feedback: Integrated resolver / incremental encoder

Shaft: Standard keyed shaft

Compatible drive: Matching Danaher Motion / Giddings & Lewis servo amplifiers

Status: Obsolete original unit, available as new old stock or fully tested refurbished spare

Product type: CNC brushless servo motor

Supported Functions

This servo motor executes closed-loop speed, torque and position control for machine feed axes. The built-in feedback device continuously transmits angular position and velocity data back to the servo drive to minimize tracking error. It maintains steady low-speed rotation and releases instant peak torque for rapid acceleration and deceleration during automatic machining cycles. It also carries thermal monitoring and fault signal output for overload protection and system diagnosis, supporting synchronized multi-axis movement for complex NC programs.

Core Functions

The rugged mechanical structure is designed for long running hours under frequent start-stop cycles. Its native feedback interface ensures seamless signal communication with original legacy drives without signal conversion. Standard flange and shaft dimensions support direct drop-in swap for the original motor, without major mechanical rework during installation, and it serves as direct drop‑in substitution for existing 401-34318-20 FSM430 servo motors.

Hardware Specifications & Environmental Features

Mounting: Standard flange mounting

Operating temperature: -10 °C to +40 °C

Storage temperature: -40 °C to +85 °C

Relative humidity: 5% – 90%, non‑condensing

Protection class: IP65 for motor housing

Condition: Original Danaher Motion brushless servo motor

Industry Applications: Applied in legacy petrochemical distributed control, old paper making production automation, material handling conveyor lines, packaging and textile machinery, water treatment remote signal collection and large conveyor remote I/O control racks.

Note: Confirm servo drive model, feedback type, flange and shaft dimension before ordering; this servo motor is manufacturer discontinued and parameter re-tuning is required after replacement.

This is from our current stock.

available stock.xlsx