Fanuc Servo Motor A06B-0257-B201

Fanuc motors are one of the core components of its CNC system, mainly comprising two major types: servo motors used for driving each axis and spindle motors that provide cutting power. These two motor categories are further divided into multiple series to accommodate different needs, ranging from precision machining to large-scale industrial machinery.

Overview of Main Motor Series

Based on application and performance, Fanuc motors can be primarily categorized into the following series:

Additionally, there is a Coolant Through Type Spindle Motor, specifically designed for direct connection to the machining center spindle to achieve better cooling effects.

Model Naming and Parameter Interpretation

Fanuc motor models and ordering numbers contain rich technical information. Taking a typical servo motor nameplate as an example:

• MODEL: e.g., αiF 12/4000, typically indicates the series, specifications, and performance. The numbers in the model usually represent the stall torque (e.g., 12 Nm) and the maximum speed (e.g., 4000 rpm).

• MOTOR SPEC (Ordering Number): e.g., A06B-0078-B103, this is the key code for identifying the motor, containing information such as shaft type, encoder type, etc.

• Main Parameters: The nameplate also clearly specifies key electrical parameters like rated power (e.g., 2.5 kW), rated speed (e.g., 3000 RPM), rated current, and voltage.

• Protection Class: Some motor models indicate the protection class, such as IP65, meaning they are completely dust-tight and protected against water jets, suitable for harsh industrial environments.

Application and Selection Reference

When selecting a motor for your own application, you can refer to the following points:

1. Determine the Motor Type: First, clarify whether you need a servo motor for feed drive or a spindle motor for the main spindle.

2. Choose the Performance Series: Select between the high-performance αi Series and the economical βi Series based on your accuracy requirements and cost considerations.

3. Match Key Parameters: Calculate and select the appropriate power, torque, and speed range based on your machine tool design requirements. For large equipment, consider the αiS Large Series motors.

4. Confirm Interface and Encoder: The encoder precision varies across motor series. For example, αi-B motors can support encoders with up to 32 million pulses/revolution, while βi-B motors are standard with 22 million pulses/revolution. Ensure that the motor’s interface and encoder type match the drive unit.