Spindle Motors & Parts

Spindle Motor Encoder, 1000-Line Accu-coder 

Part number: ENC-0004
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Fadal Spindle Motor Encoder, 1000-Line Accu-coder 

The ENCODER;1000-LINE ACCUCODER; SPINDLE MOTOR (ENC-0004) is a critical component in CNC machines specifically designed as an original OEM Accu-coder for Spindle Motors. It plays a major role in monitoring and controlling spindle rotation, contributing to the precision and efficiency of various machining applications.


The ENCODER; 1000-LINE ACCUCODER; SPINDLE MOTOR encoder boasts a 1000-line resolution, enabling it to precisely monitor spindle rotation. Its high-level functionality ensures that CNC machinery maintains tight control over spindle movements, leading to enhanced accuracy and quality in machining processes.

Usage of ENC-0004

The Accu-coder for all Spindle Motors in Fadal CNC Machines is a replacement part that’s designed to monitor spindle rotations with unparalleled accuracy. This encoder, equipped with a 1000-line resolution, ensures meticulous control over spindle movements, contributing to enhanced precision and efficiency in a myriad of machining applications. 

Fadal's, Baldor Accu-coder, Spindle Motor Encoder Test

One of the most common problems with a Fadal Spindle Drive running in the Vector mode is caused by the spindle motor encoder. Missing encoder pulses will basically confuse the drive and cause vector miscalculations which result in too much current output to the motor. One sign is that the load meter will usually "peg" or pulsate. Another sign is the RPM will not be stable. Too often the drive is misdiagnosed as being "bad" when it's actually the encoder causing the problem.

The best method of testing a Fadal Spindle Motor Encoder is to use an oscilloscope to view the A/B channels. Pulse errors can easily be detected. With our new Baldor H2 drive, we simply switch the drive into open loop Inverter mode and you can see the encoder RPM calculations changing erratically with the drives diagnostics feature. With the older Baldor drives, as you rotate the spindle, the drive keypad will display the calculated rpm.

One simple way to manually test an encoder is by using a FLUKE meter, set it to AC input. When checking from the encoder supply power common to one of the A+,A-,B+,B- encoder signals on the spindle drive encoder input terminal, you should see approximately 2.8 VAC when turning the spindle at the orientation speed. The digital pluses look like an AC voltage to a FLUKE meter.

Another important way to test the encoder is by checking the state of each channel. With a voltmeter in the DC setting, from the encoder supply power ground to the A+ encoder input, you should measure either 0 or 3.5 VDC. The state is either high or low. If A+ is high (3.5 volts) then the A- channel must be low; A+ and A- can never be the same. The same logic goes for the B+ and B- channels. If you rotate the spindle and let it stop, you should see the states changing.

ITS Support Services

Understanding the importance of reliable performance, ITSCNC offers comprehensive support and guidance for the Fadal Baldor Accu-coder Spindle Motor Encoder. Our expert team is readily available to assist with installation, troubleshooting, or any inquiries, ensuring users harness the full potential of this critical component.


Navigating the intricacies of CNC machinery is made easier with the guidance provided by ITSCNC. Our technical expertise extends beyond the point of purchase, empowering users with the knowledge needed for optimal operation and maintenance of the Accu-coder encoder. 

Warranty Information

Purchased from our website, the ENCODER;1000-LINE ACCUCODER;SPINDLE MOTOR comes with a new 90-Day Warranty. This warranty serves as a testament to our confidence in the encoder's quality and performance, providing users with peace of mind and support in case of any unforeseen issues.

Why ITSCNC For Fadal Spindle Motors & Parts? 

Choosing ITSCNC for the Accu-coder Spindle Motor Encoder and Fadal Spindle Motors & Parts aligns with several key advantages, including our commitment to sourcing and providing high-quality components ensures that the encoder meets or exceeds industry standards. 

ITSCNC prioritizes comprehensive support, offering assistance not just during the purchase but throughout the operational life of the encoder. And finally, navigating our user-friendly website ensures a hassle-free procurement process, allowing users to find, select, and purchase essential components with ease.


More Information
Shipping Time4pm PST
WarrantyNew, 90 Day Warranty.
Repair PriceNo
Original OEM, Accu-coder, Spindle Motor Encoder for all Spindle Motors.
New, 90 Day Warranty.
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