ABB 3HAC045978-001 Axis 5 Motor with Pulley for IRB 1200

ABB 3HAC045978-001 Axis 5 Motor with Pulley

The ABB 3HAC045978-001 is the axis-5 (wrist pitch) servo motor for ABB IRB 1200 robots (Type B, the SafeMove 2 variant), supplied with a timing-belt pulley already mounted on the shaft. Send us your robot serial number and we will confirm the exact match before you order.

Specifications

Specific electrical and mechanical parameters (voltage, current, resolver type) are not published in our reference set for this exact variant. Send us your robot serial number and RobotWare version and we will provide the matching datasheet.

Industrial Applications

• Used in ABB IRB 1200 robots across electronics and consumer-goods small-parts assembly, precision handling, machine tending, pick-and-place, dispensing and screw-driving cells.
• Suitable for compact production lines, test stations, lab automation, and light packaging or inspection where the IRB 1200 wrist precision matters.
• Applies to IRB 1200 Type B units (SafeMove 2). Confirm your robot type from the base label before ordering.

Design Purpose

The axis-5 motor converts electrical energy from the drive unit into controlled rotation of the IRB 1200 wrist pitch joint. The pre-installed timing-belt pulley transmits torque to the wrist through a belt drive, keeping the rotating mass low and the wrist assembly compact — important for a small robot that reaches into tight workspaces with high path accuracy. The built-in resolver/encoder feeds precise rotor position back to the IRC5 controller for smooth, repeatable wrist motion.

Common Failure Modes

• Overcurrent or overheat tripping — the drive unit reports motor overload after continuous wrist motion.
• Encoder / resolver feedback loss — axis 5 shows position drift or alarms during homing.
• Holding brake failure — the wrist sags or drops when the servo is switched off.
• Timing-belt or pulley wear — tooth wear or belt slack causes backlash, chatter, or wrist drift.
• Abnormal noise or vibration — worn pulley teeth or bearing damage in the compact wrist assembly.
• Insulation degradation / ground fault — the axis-5 drive trips the moment the motor is enabled.

Specific alarm codes are not officially documented for this model. Please contact us with the fault code displayed on your controller for accurate diagnosis. For a step-by-step root-cause and replacement workflow, see our article on ABB IRB 1200 Axis 5 Motor Troubleshooting (internal link to be added at upload).

Why Choose Us

• Specialized in industrial robot spare parts for ABB, FANUC, KUKA, and YASKAWA.
• Each part is tested and verified by experienced technicians before shipping.
• Technical support available to help with installation and troubleshooting.
• Worldwide shipping from our Shanghai office with careful industrial packaging.
• Repair service offered for defective units.

Related Products

• Other IRB 1200 axis motors with pulley — including the SafeMove 2-supported variant 3HAC061278-001 (a different part from this one; confirm compatibility before ordering).
• IRB 1200 axis drive units (axis 2/3/5/6 differ between Type A and Type B).
• IRB 1200 calibration toolkit (3HAC051256-001) used during motor replacement.
• Contact us for a full list of compatible IRB 1200 accessories and replacement parts.

Request a quote for ABB 3HAC045978-001, or send us your robot serial number to confirm the exact match before ordering.