FANUC A20B-2002-0310
Manufacturer: FANUC
Part No: A20B-2002-0310
Type: Spindle Encoder PCB (MZ‑Sensor Unit)
Application: FANUC CNC Spindle Motor Feedback
1. Overview
The FANUC A20B-2002-0310 is a spindle encoder printed circuit board (MZ‑Sensor unit) for FANUC CNC systems. It is installed at the rear of the spindle motor to detect **real‑time speed, angular position, and rotation direction**, providing critical feedback for closed‑loop spindle control. It ensures high machining accuracy, spindle orientation, and tapping functions. Non‑contact magnetic induction design offers long life and strong resistance to vibration and oil contamination.
2. Main Parameters
• Function: Spindle speed & position feedback
• Signal Output: A/B/Z‑phase differential pulses
• Power Supply: 5VDC
• Detection Method: Non‑contact magnetic induction
• Mounting: Directly on spindle motor rear end
• Compatibility: FANUC 0i/16i/18i/21i CNC systems
• Features: Plug‑and‑play, no calibration needed
3. Model Code Explanation
• A20B: FANUC CNC control board series
• 2002: Spindle encoder PCB type
• 0310: Specific version & configuration
4. Application Scope
• CNC turning & machining centers
• High‑speed & precision spindle control
• Automatic tool change (spindle orientation)
• Rigid tapping & synchronous threading
FANUC © A20B-2002-0310 Spindle Encoder PCB
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