ABB 3HAC043090-003 Axis 1 Gearbox RV-155C for IRB 4600 Type C

Axis 1 Reduction Gearbox RV-155C for ABB IRB 4600 Type C Robots

Specifications

Industrial Applications

• Axis-1 reduction / torque transmission inside ABB IRB 4600 robot manipulators (Type C design).
• Replacement of a worn, noisy or backlash-degraded axis-1 gearbox in IRB 4600 Type C cells.
• Preventive maintenance and axis-level rebuild programs to restore robot repeatability.
• Spare-part holding for MRO teams and system integrators running IRB 4600 lines.

Design Purpose

Robot motion accuracy and repeatability depend on the joint reduction gear transmitting motor torque at the correct ratio with minimal backlash. The ABB 3HAC043090-003 is the defined axis-1 reduction gearbox (designation RV-155C, 127.97 reduction ratio, Type C) for the IRB 4600 Type C design — it is the exact-fit spare called out in ABB's documentation and spare-parts manuals, not a generic reducer.

Because ABB gearbox versions are tied to the robot model, axis position, design type (Type C) and reduction ratio, this is a fitment-specific spare. The correct part is matched by the complete article number, robot serial and spare-parts list rather than by external appearance — neighbouring versions are not interchangeable. This is a confirmed-fitment spare, verified against the robot's parts list; the Type C design must be confirmed from your documentation.

Common Failure Modes

• Increased backlash / lost motion causing position-accuracy drift and path errors.
• Abnormal noise or vibration from worn gears or bearings.
• Overheating from insufficient or degraded grease / poor lubrication.
• Leaking or contaminated lubricant, or failed seals.
• Cracked housing or mounting-face damage from overload or impact.
• Wrong gearbox fitted (design type / axis / robot model mismatch) causing mechanical interference or no-go.

Why Choose Us

• Genuine ABB 3HAC043090-003 axis-1 reduction gearbox (RV-155C, 127.97 ratio, Type C) — the defined IRB 4600 Type C spare, not a generic reducer.
• Fitment confirmation: we verify robot model, design type and serial from your documentation so you receive the correct part.
• Condition confirmed before ordering (new original or used original); quotation-based supply with no stock or dispatch-time promises.
• Backed by the ABB IRB 4600 spares we supply across the robot range.

Related Products

• 3HAC028837-004 — ABB IRB 2600 / IRB 4600 axis-1 gearbox (TS245RHS-125). Different designation, reduction ratio and robot family from 3HAC043090-003; not interchangeable — confirm the exact article number.
• 3HAC039109-002 — ABB IRB 2600 / IRB 4600 reducer (TS225R). Different article number, axis position and design; not interchangeable.
• 3HAC039109-004 — ABB IRB 2600 / IRB 4600 reducer (RV). Different article number and axis position; not interchangeable.
• Not sure which IRB 4600 axis / design-type gearbox your unit needs? Send the robot model, design type and serial number and we confirm the correct spare — including whether 3HAC043090-003 (RV-155C, Type C, axis 1) is the right part.