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Buy Mitsubishi OSA105S5A Absolute Encoder - Full front view - Repair Service available for OSA105 S5A

OSA105S5A Servo Motor Encoder | 4th Axis Encoder

In stock
$291.00 USD
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Delivery: Estimated 2- 6 business days delivery. See details

Returns: 14 days returns. See details

All parts are covered by REACO CNC warranty

All parts are covered by REACO CNC warranty

Every part is carefully inspected and tested for reliability。

All parts tested under load

Global Delivery for Fanuc and Mitsubishi CNC parts

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More than 150,000 parts in stock & ready for delivery

More than 100,000 parts in stock & ready for delivery

Mitsubishi OSA105S5A Servo Motor Encoder | 4th Axis Encoder

 

Brand MITSUBISHI
Condition & Warranty

NEW/Refurbished: 1-Year warranty

Used(90% New): 3-Month warranty

Category

Encoder/Coder

Parameter Description OSA105S5A
DISCONTINUED BY MANUFACTURER
SERVO MOTOR ENCODER
4TH AXIS
400 V
1000000 PULSES PER REVOLUTION
MI-B55040
B55040
Handing time Same-Day shipping (in stock)
Shipping Method DHL/UPS/FedEx
Estimated Delivery Time (via DHL)

Asia: 1-3 business days

Europe: 2-4 business days

North America: 2-4 business days

South America:  3-6 business days

Middle East & Africa: 3-6 business days

Oceania: 2-5 business days

Service Test video will be sent before delivery
Package Cartons

 

The Mitsubishi OSA105S5A is a high-resolution servo motor encoder designed for 4th axis applications.
Although discontinued by the manufacturer, this encoder is still available from REACO CNC with fast global shipping and repair support.

Product Overview

The OSA105S5A Servo Motor Encoder is used in Mitsubishi servo systems to provide precise rotational position feedback, especially for 4th axis control in CNC machine tools.

With a resolution of 1,000,000 pulses per revolution, this encoder supports high-precision machining and accurate axis positioning.
Despite being discontinued, it remains essential for maintaining existing equipment. REACO CNC supplies in-stock units and professional encoder repair services.

Technical Specifications

  • Model: OSA105S5A

  • Type: Servo Motor Encoder

  • Application: 4th Axis

  • Rated Voltage: 400 V

  • Resolution: 1,000,000 pulses per revolution

  • Reference Codes: MI-B55040 / B55040

  • Manufacturer Status: Discontinued

  • Brand: Mitsubishi Electric

Applications

  • Mitsubishi CNC machine tools

  • 4th axis rotary systems

  • High-precision servo positioning

  • Encoder replacement for legacy systems

Purchase & Repair Options

REACO CNC offers flexible support:

  • Direct Purchase: In-stock encoders with fast global shipping

  • Repair Service: Encoder inspection, signal testing, and repair

All encoders are checked and tested before shipment.

Why Choose REACO CNC

  • Experience with Mitsubishi servo motor encoders

  • Strong support for discontinued models

  • In stock with fast global shipping

  • REACO CNC warranty

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Over 100,000 CNC Parts in Stock

With an extensive inventory of FANUC and Mitsubishi components, we ensure fast delivery and reliable replacements — minimizing your downtime.

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Fast Global Delivery

  • DHL, UPS, FedEx Global shipping.
  • Expedited shipping available
  • Packed in secure reinforced cartons for maximum protection during transport.
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Need Expert Assistance?

Our experienced engineers provide technical support for all FANUC and Mitsubishi CNC parts — including troubleshooting, installation guidance, and repair consultation.

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