In the complex structure of a wheel loader planetary gearbox, every detail matters—and the support shaft (bearing shaft) is no exception.
In the complex structure of a wheel loader planetary gearbox, every detail matters—and the support shaft (bearing shaft) is no exception. The Type 18 support shaft, produced by Jinjiang Anhai Liancheng Machinery Co., Ltd., is designed to provide reliable structural support and precise positioning for planet gears during heavy-load operations.
It’s not just a pin—it’s the backbone of your gear’s performance.
The 18-type support shaft is a high-strength shaft used to support and position 18-tooth planet gears inside the planetary carrier. It ensures smooth gear rotation, maintains spacing and torque balance, and prevents misalignment under heavy torque loads.
Crafted from alloy structural steel, and processed with precision CNC turning, quenching, and tempering, this component ensures long-term wear resistance and mechanical reliability—even under continuous shock loads.
It might look simple, but this small part plays a big role. Don’t overlook it.
Forged Alloy Steel Construction: Provides superior tensile strength and fatigue resistance.
Heat Treatment: Quenching & tempering give the shaft a high core toughness and durable surface hardness (HRC 45–50).
High Machining Accuracy: CNC-turned to achieve high roundness and length tolerance—essential for proper gear mesh.
Surface Finish: Polished to reduce friction and ensure low-resistance rotation within the gear housing.
100% Quality Control: Includes crack inspection, hardness testing, and dimensional checks for every batch.
And honestly, it don’t get more solid than this.
This Type 18 support shaft is widely used in the planet carrier assembly of ZL series wheel loaders and other construction equipment requiring multi-gear planetary systems. It’s suitable for both OEM gearbox assembly and aftermarket repair solutions.
Whether you’re building from scratch or swapping out a damaged shaft, this one gets the job done—and then some.
With more than 310 skilled workers, a 25,000㎡ factory, and over 1000 sets of machining and heat treatment equipment, we provide a fully integrated production line—from forging to final inspection. Our support shafts are shipped globally and trusted by industry leaders in the construction machinery sector.
