II. Core Parameters
Part Number: VOE14541030 (Alias: SA7118-30130/SA7118-30140)
Structure Type: Three-stage planetary gear swing reduction mechanism, matched with M5X130 swing motor assembly
Gear Specifications
Sun Spline: 19 teeth
Output Pinion Gear: 14 teeth
Net Weight: Approximately 280–320kg
Swing Gearbox Oil Filling Capacity: 6L of hydraulic oil per unit
Maximum Output Swing Torque: Complies with the standard swing torque of 166.3kN·m for EC480 complete machine
III. Structural Composition
Consists of box body, internal gear ring, planet carrier, sun gear, planetary gear, output gear shaft, oil seal, end cover and flange mounting base. Swing motor is not included (Motor Part Number: 14673219/14550092).
IV. Supply Version Classification
Genuine New Original: Original vo lvo parts with 12-month warranty and the highest precision matching degree.
OEM New Aftermarket: Cast steel shell and heat-treated gears, with a 3–6 month warranty, universal replacement parts for mining operations.
Remanufactured Refurbished: Repaired by disassembling and restoring worn parts, cost-effective, suitable for short-term construction site transition use.
V. Common Faults and Replacement Scenarios
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Weak swing and unilateral swing stuttering
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Swing reducer oil leakage (casing / output shaft oil seal damage)
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Internal gear tooth breakage, abnormal noise and excessive clearance
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Output gear wear and excessive swing backlash
VI. Installation Guidelines
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Release residual pressure in the swing oil circuit before disassembly and assembly
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Tighten flange bolts evenly in diagonal sequence in accordance with the original factory torque standards
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Fill with special swing hydraulic oil after assembly, vent and test run the equipment
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Check the oil level and metal debris every 500 working hours regularly