SIEB & MEYER 44.01.21 Spindle Servo Motor

Module Feature

SIEB & MEYER 44.01.21 is permanent magnet synchronous high-speed spindle servo motor. It delivers ultra-high rotational speed, rapid dynamic response and stable torque output. Built-in high-resolution rotary encoder for real-time speed and position feedback. Optimized for high-speed milling, PCB routing and semiconductor drilling applications. Matches SIEB & MEYER SD series spindle servo amplifiers. Widely applied in CNC machining centers, PCB and semiconductor processing equipment.

Working principle

Three-phase high-frequency AC power from spindle amplifier generates rotating magnetic field inside stator windings. The magnetic field drives rotor rotation to produce high-speed mechanical cutting power. Integrated encoder continuously transmits speed and angular position feedback signals to the amplifier to perform closed-loop speed and spindle orientation control. If abnormal feedback signal is detected, the amplifier activates safety interlock and cuts power output.

Onboard components

Permanent magnet rotor, stator winding assembly, high resolution rotary encoder, precision contact bearings, motor housing, power connector, encoder feedback connector, shaft sealing assembly, liquid cooling pipeline ports.

LED indicators

No onboard LED indicators, fault information is displayed on spindle amplifier unit.

Hardware self-diagnosis

Visual inspection of motor housing, shaft and connectors; winding resistance and insulation resistance measurement; encoder signal test; check bearing running noise, shaft runout and cooling pipeline for liquid leakage.

Programming software

SIEB & MEYER Drivemaster commissioning software for spindle motor parameter setup, auto-tuning and fault diagnosis.

Electrical & Process Parameters

Model: 44.01.21 Motor type: Permanent magnet synchronous spindle motor Control mode: Speed / Position / Orientation control Cooling: Liquid cooling Feedback: Built-in rotary encoder Mounting: Flange mounting Protection: Overheat, overload, encoder loss monitoring

Mechanical & Structure

Mounting: Flange mounting Protection class: IP54

Environmental

Operating temperature: 0℃ ~ +40℃ Ambient humidity: 5~95% non-condensing Certification: CE compliant Status: SIEB & MEYER high speed spindle servo motor

Function

44.01.21 spindle servo motor manufactured by SIEB & MEYER. It converts electrical energy into high-speed rotary mechanical power for material cutting and machining. Overload, overheating, encoder failure or winding insulation breakdown will trigger amplifier alarm and stop spindle operation. It is high-speed power execution unit for SIEB & MEYER CNC spindle system.

Installation

Follow lockout/tagout safety procedure before installation. Cut off all amplifier power completely. Mount motor via flange and couple with tool holder or spindle coupling. Connect motor power cable, encoder feedback cable and liquid cooling pipeline correctly. Configure spindle parameters and run auto-tuning through Drivemaster software, test spindle rotation before formal machining.

Interface

Motor power connector, encoder feedback connector, liquid cooling inlet/outlet port, housing ground terminal of 44.01.21.

Diagnostic

Motor no rotation: No amplifier power, wrong wiring or encoder fault. Overload alarm: Mechanical jam, excessive cutting load or bearing damage. Encoder fault: Damaged encoder, loose feedback cable or wrong parameter setting. Motor overheat: Insufficient liquid cooling flow or coolant leakage. Abnormal noise: Bearing wear, misalignment or mechanical resonance.

Product Brief

44.01.21 SIEB & MEYER permanent magnet synchronous spindle servo motor,flange mount,liquid cooling,with integrated rotary encoder,matching SIEB & MEYER SD series spindle amplifiers,for CNC and semiconductor high speed routing & drilling spindle.