Product Overview

The ABB 3HAC021722-001 is a precision-engineered servo motor with an integrated pinion gear assembly, specifically designed as a direct replacement for the Axis 5 (wrist axis) on ABB IRB 2400 series industrial robots, with compatibility extending to certain early IRB 2600 models as well. This component is not a standalone motor but a complete factory-assembled “motor with pinion” unit, where the pinion gear is pre-installed and precisely aligned on the motor shaft by ABB. It is a critical spare part for maintaining robot accuracy and uptime.

The ABB 3HAC021722-001 is manufactured by Yaskawa, a leading servo motor supplier, and is tailored specifically for ABB’s robotics applications. The motor is rated for a power class of approximately 0.4 to 0.75 kW and operates on a three-phase AC 200–230 V supply, making it suitable for the demanding, high-cycle operations of the wrist axis. Its integral absolute encoder provides precise position feedback to ABB IRC5 or S4C+ robot controllers, ensuring that the robot maintains accurate positioning even after power cycles.

 

Technical Specifications

Parameter Name	Value
Product Model	3HAC021722-001
Manufacturer	ABB Robotics / Yaskawa Electric
Product Type	Servo Motor with Pinion Assembly
Primary Application	IRB 2400 (10/16 kg) Axis 5; Compatible with IRB 2600 (early models)
Motor Type	AC Servo Motor (Yaskawa SGM Series derivative)
Rated Power	Approx. 0.4 – 0.75 kW
Rated Voltage	3-Phase AC 200–230 V
Encoder Type	Absolute Encoder (Abs. Encoder)
Gear Type	Pre-installed Pinion Gear (Hardened Steel)
Connection Type	Pre-wired connectors (Power + Encoder)
Net Weight	3.44 kg
IP Rating	IP54 (Typical Robot Joint Servo)
Country of Origin	Czech Republic
Associated Kit	3HAC020536-003 (IRB 2400 Spare Parts Kit)
Previous Part Number(s)	3HAC17362-1 / 3HAC17330-1

 

Main Features and Advantages

Factory Integrated Precision Pinion: The most defining feature of the ABB 3HAC021722-001 is its pre-installed pinion gear. This is not a separate part but is factory-pressed onto the motor shaft with exacting tolerances. This assembly ensures the correct gear mesh with the robot’s RV reducer input, eliminating any potential errors that could arise from field installation of a separate gear. Replacing the entire 3HAC021722-001 assembly is mandatory—attempting to source or retrofit the pinion gear alone will compromise the robot’s precision and lead to premature failure due to incorrect tooth engagement.

High-Performance Servo Drive and Absolute Feedback: At the heart of the ABB 3HAC021722-001 is a robust servo motor from Yaskawa, a proven partner for ABB’s motion control needs. The motor is designed to deliver the high torque and rapid response required for the wrist axis (Axis 5), which performs complex orientation movements during robotic tasks. Its integrated absolute encoder is a critical feature, allowing the robot controller to retain position data even after a power loss. This eliminates the need for a full “fine calibration” of the axis after every power cycle, streamlining the robot’s recovery process and reducing downtime.

Robust Design for Industrial Environments: As a component designed for the rigors of a robotic joint, the ABB 3HAC021722-001 offers an IP54 protection rating, making it resistant to dust ingress and splashing water typical in manufacturing environments. The entire assembly, including the pinion gear, is engineered for longevity, but its status as a wear-and-tear part means it is subject to the mechanical stress of continuous operation. The availability of the 3HAC021722-001 as a genuine OEM spare ensures that maintenance can be carried out with a part that meets ABB’s exacting standards, restoring the robot to its original performance specifications.