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Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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Mitsubishi Electric OSA166ET2NA Absolute Encoder 5V DC

$329.99 USD

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✓ 30-day returns on every item — return policy

ConditionSurplus - Untested MPNOSA166ET2NA Stock #0226-00064

30-day returns on every item. Photos reflect the actual item’s current condition — see our return policy and condition guide.

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The Mitsubishi Electric OSA166ET2NA is an absolute rotary encoder used as the feedback device on Mitsubishi AC servo motors within CNC machine tool and industrial automation systems. Identified on the rating plate as ABSOLUTE ENCODER OSA166ET2NA, with serial number J5AW06SX10D and date code 1810, this unit is manufactured by Mitsubishi Electric Corp. in Japan and belongs to the OSA166 family of high resolution serial absolute encoders. Encoders in this family are factory mounted to Mitsubishi servo motors such as the HC SFS, HC RFS, and related platforms, providing position and velocity feedback to compatible Mitsubishi MR J2, MR J2S, and MR J3 series servo amplifiers and drives. The unit features a sealed metal housing with a circular mounting flange, an integral connector interface on the rear of the body for the encoder cable, and Mitsubishi Electric branding cast into the cover. The OSA166 series provides high resolution position feedback per revolution with absolute position retention, used by the servo drive system for closed loop motion control. Typical applications include CNC machining centers, CNC lathes, industrial robots, injection molding machines, and other servo driven motion control equipment where precise positioning and absolute home position recovery are required. Buyers replacing a failed OSA166ET2NA encoder, sourcing a spare for a maintenance program, or supporting a legacy Mitsubishi servo platform will recognize the part number from the original nameplate. Mechanical mounting and electrical interface are specific to the Mitsubishi OSA platform.

Stock # 0226-064

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.