130104000256A012 Sun Gear Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

130104000256A012 Sun Gear Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

The sun gear (130104000256A012) is the central active component of the planetary transmission of the reducer. It works in conjunction with the planetary gears, ring gear, and planet carrier to be responsible for power input, torque transmission, and speed regulation. By reducing speed and increasing torque, it ensures the stability of the reducer’s transmission and directly affects the smoothness and efficiency of the equipment’s walking and rotating operations.
This SANY original sun gear is forged from high-strength alloy, undergoing heat treatment, tooth surface quenching, and precision grinding. It features precise tooth profile and high coaxiality, making it suitable for harsh working conditions such as heavy-duty start-stop cycles and high-frequency vibrations. Old sun gears are prone to wear and tooth breakage, and shaft misalignment, causing abnormal transmission noise, power interruptions, and insufficient torque, which can even lead to gearbox shutdown in severe cases. This product can be replaced in situ without damage, suitable for equipment maintenance, overhauls, and bulk stocking, effectively restoring transmission performance and reducing operating costs.

【Core Technical Parameters】

— Product Model: 130104000256A012
— Product Name: Sun Gear
— Product Type: Original Power Input and Torque Transmission Core Components for Engineering Machinery Gearboxes
— Compatible Models: Compatible with SANY’s corresponding travel and slewing gearboxes, supporting non-destructive replacement.
— Main body material: High-strength alloy structural steel, wear-resistant, pressure-resistant, impact-resistant, and not easily deformed or broken.
— Operating conditions: Suitable for high-speed continuous transmission, heavy-load start-stop, high-frequency vibration and other field conditions.
— Structural Design: Integrated shaft and gear structure, ensuring a stable shaft, regular tooth profile, and uniform stress distribution.
— Transmission performance: tight tooth meshing, small transmission clearance, high torque transmission efficiency, and stable speed.
— Surface treatment: Precision forging heat treatment + tooth surface quenching + rust prevention treatment, wear-resistant, corrosion-resistant and anti-aging.
— Operating characteristics: As an active input, it stably drives the wheel system and precisely reduces speed and transmits torque.
— Dimensional accuracy: Original factory precision engineering standard, high coaxiality, small error, tight assembly.
— Installation method: Original alignment assembly, no modification required, convenient for maintenance and disassembly.
— Adaptability to operating conditions: fatigue resistant, withstands heavy-duty high-speed operation, and is not prone to gear breakage or wear failure.
— Service life: High structural strength, wear-resistant tooth surface, stable and durable for long-term continuous operation.

The 130104000256A012 sun gear is a core transmission component of Sany’s original gearboxes. It features high hardness, stable transmission, wear resistance, and durability, making it suitable for both travel and slewing gearboxes in construction machinery. It can resolve issues such as abnormal transmission noise, power interruption, insufficient torque, and gear breakage, stabilizing equipment transmission performance, improving operational smoothness, and reducing downtime. It is a high-quality original part for equipment maintenance and large-volume stocking.

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1 130104000256A001 Screw
2 130104000256A002 Plug
3 130104000256A003 Gasket
4 130104000256A004 End Cap Assembly
5 130104000256A005 Gasket
6 130104000256A006 O-ring
7 130104000166B001 Sun Gear
8 130104000166B002 Planetary Carrier
9 130104000256A009 Sun Gear
10 130104000256A010 Planetary Carrier
11 130104000256A011 Bolt
12 130104000256A012 Sun Gear
13 130104000256A013 Snap ring
14 130104000256A014 Planetary Component
15 130104000256A015 Gasket
16 130104000256A016 Planetary Carrier

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