Speed reduction
The 127.97 ratio converts motor speed into the lower joint speed required for base rotation. The controller commands motor motion while the robot model translates that movement into axis-1 angle.
ABB IRB 4600 robot
ABB 3HAC043090-003Type C Axis-1 Reduction Gear
01
Product Overview
ABB 3HAC043090-003 is the Type C axis-1 reduction gear for applicable ABB IRB 4600 robot variants. The RV-155C-127.97 gear converts base-motor rotation into the lower-speed, higher-torque movement that turns the robot frame around the first axis.
Mounted between the base and frame, ABB 3HAC043090-003 receives torque from the axis-1 motor pinion and transfers its output into the rotating robot structure. Bearings, seals, lubricant and mounting faces share that load path, while the motor resolver reports the input-side position used by the controller model.
Service selection for ABB 3HAC043090-003 depends on the IRB 4600 execution and Type C spare-parts record rather than external appearance. The frame is supported before separation, the gear is aligned without forced seating, and axis 1 is recalibrated before a controlled base-rotation test.
02
Product Data
| Technical item | Specification |
|---|---|
| Brand | ABB |
| Model | 3HAC043090-003 |
| Product name | Axis-1 reduction gear, Type C |
| Country | Sweden / Switzerland |
| Robot family | ABB IRB 4600 |
| Axis assignment | Axis 1 |
| Gear designation | RV-155C-127.97 |
| Reduction ratio | 127.97 |
| Compatible executions | 60/2.05, 45/2.05, 40/2.55, 20/2.55 |
| Installed position | Between base and rotating frame |
| Input relationship | Axis-1 motor and pinion |
| Commissioning | Axis-1 calibration and controlled rotation test |
03
Operating Characteristics
ABB 3HAC043090-003 determines how axis-1 motor motion becomes base rotation, including the reduction, load transfer and mechanical response seen by the controller.
Structural load path
Robot mass and acceleration loads pass through the gear, base and frame interfaces. Clean seating and even fastening distribute those loads instead of concentrating them at one mounting point.
Reversing response
Axis 1 repeatedly reverses direction during robot work. Gear condition, pinion engagement and mounting stiffness therefore affect backlash and settling even when the motor and resolver remain electrically normal.
04
System Integration
ABB 3HAC043090-003 works with the Type C axis-1 motor, IRC5 drive channel and IRB 4600 mechanical model as one closed base-rotation system.
Motor-to-gear interface
The installed motor pinion feeds the gear input. Motor alignment and gear seating must agree so torque reaches the reduction stages without abnormal contact or housing stress.
Feedback interpretation
Resolver position is measured at the motor and interpreted through the configured gear relationship. A correct electrical reading cannot compensate for the wrong gear execution or disturbed mechanical fit.
Robot-structure output
The gear output rotates the frame relative to the base while cables and covers accommodate that movement. Service validation therefore includes mechanical clearance and harness routing, not only motion direction.
05
Questions About This Product
How should a technician select the correct Type C gear for ABB 3HAC043090-003?
For ABB 3HAC043090-003, confirm the IRB 4600 execution and axis-1 spare-parts record before ordering 3HAC043090-003.
What should be checked when a team needs to secure the robot structure for removal for ABB 3HAC043090-003?
For ABB 3HAC043090-003, support the frame and isolate axis-1 energy before separating the base gear.
Why might a site need to prevent contamination for ABB 3HAC043090-003?
For ABB 3HAC043090-003, cover open gear, bearing and mounting interfaces throughout the 3HAC043090-003 replacement.
Which checks help a customer respond to uneven base motion for ABB 3HAC043090-003?
For ABB 3HAC043090-003, inspect gear seating, pinion engagement, fastener sequence and lubrication before changing drive tuning.
What is the safest way to verify the configured ratio for ABB 3HAC043090-003?
For ABB 3HAC043090-003, confirm the controller's mechanical-unit record matches the RV-155C-127.97 gear.
How can commissioning staff return axis 1 to service for ABB 3HAC043090-003?
For ABB 3HAC043090-003, calibrate 3HAC043090-003 and test slow bidirectional base rotation before automatic operation.
06
Company Profile
Moore Automation
https://www.mvme.cn/Moore Automation supports industrial automation enquiries with complete manufacturer and model records, including robot execution, requested quantity and destination details.
Product scopeRobot and control components
Record structureFull identifiers stay together
Commercial handoffRequest details remain linked
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