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-A20B-2003-0310 Original used or 100% non-refurbished.
-Tested and verified, with 360-degree photos and test videos available before shipment.
-Reliable performance for various industrial applications.
$130.00
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The FANUC A20B-2003-0310 is a built-in encoder, also known as an MZI sensor, designed for spindle speed feedback and precise spindle orientation control in FANUC CNC systems.
Unlike standard speed-only spindle applications, certain machining operations require accurate spindle positioning. The A20B-2003-0310 provides the necessary one-revolution reference signal and position feedback to ensure the spindle stops at an exact angular position when required.
| Part Number | A20B-2003-0310 |
| Type | Built-in Encoder / MZI Sensor |
| Brand | FANUC |
| Application | Spindle speed & orientation control |
| Condition | Original used / New (Made in China) |
| Warranty | 3 months |
All units are fully tested before shipment to ensure stable signal output and reliable orientation performance.
In most machining processes, the spindle operates under speed control only. However, in special situations, precise spindle positioning is required.
Typical applications include:
During these operations, the spindle must stop at a fixed angular position. This function is known as spindle orientation.
When the NC system issues an orientation command:
The encoder ensures:
Without a stable MZI encoder signal, spindle orientation may fail or become unstable.
The A20B-2003-0310 belongs to the MZI sensor type used in FANUC spindle systems.
MZI sensors provide:
This signal allows the CNC system to transition from speed control to position control when spindle orientation is required.
Encoder Internal Cable
To ensure stable signal transmission, the internal encoder cable plays a critical role in the spindle feedback system.
Damaged or aged cables may cause:
When replacing the A20B-2003-0310 encoder, it is recommended to inspect or replace the corresponding internal encoder cable to ensure optimal system performance.
We provide compatible encoder internal cables upon request. Please confirm your motor model for accurate matching.
It is a built-in MZI encoder used for spindle speed feedback and spindle orientation positioning in FANUC CNC systems.
The spindle may fail to orient, stop at incorrect angles, or generate orientation-related alarms.
Please provide your motor model, CNC control series, and alarm information for verification.
| Weight | 0.2 kg |
|---|---|
| Dimensions | 15 × 10 × 5 cm |
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