First gear planetary carrier assembly

Product Introduction

The first-gear planetary carrier assembly is the core reduction transmission assembly of the first-gear transmission system in a loader gearbox. It integrates the planetary carrier body, planetary gears, needle roller bearings, shaft pins, and retaining rings, working in conjunction with the sun gear and ring gear to complete the first-gear reduction and torque conversion, smoothly transmitting power to the output end. It is a key component for achieving low-speed, heavy-load, and power amplification in first gear.

Made of high-strength alloy steel through forging, the planetary carrier body undergoes heat treatment. The planetary gears are made of 20CrMnTi alloy carburized steel, undergoing carburizing, quenching, and precision grinding processes, resulting in high tooth surface hardness, wear resistance, and impact resistance. The planetary carrier is rigid and not easily twisted or deformed. All components are precisely assembled, ensuring high concentricity and smooth operation. The needle roller bearings provide smooth lubrication and excellent sealing performance, preventing dust and oil leaks. Suitable for the complex working conditions of loaders under heavy loads and frequent start-stop cycles, it features original factory standard dimensions, strong interchangeability, and can directly replace the original assembly without modification. It is suitable for repairing various loader gearboxes and for use with new machines.

Application Scenarios

• Construction Sites: Earthmoving, site leveling, road construction; low-speed heavy-load start-up in first gear; frequent gear shifting; stable transmission, good reduction and torque conversion effect, strong power output.
• Mining and Quarrying: Heavy-load climbing, bumpy road operation; withstands continuous high torque impact; tight planetary gear meshing; excellent planetary carrier load-bearing capacity, not easy to loosen or damage; durable for long-term heavy loads.
• Sand and Gravel Yards, Coal Yards, and Mixing Plants: Long-term continuous low-speed loading and unloading, material stacking operations; slow temperature rise and low attenuation under high load; smooth lubrication of needle roller bearings; low failure rate; ensures continuous operation.
• Complete Machine Matching and Maintenance: Compatible with the first gear transmission system repair and replacement of 3-ton, 5-ton, 6-ton, and 7-ton wheel loaders; new machine installation matching; compatible with mainstream models.
• Harsh working conditions: Adaptable to dusty, high oil temperature, and high frequency vibration conditions; corrosion resistant and fatigue resistant; all components are well protected, effectively extending the service life of the assembly and reducing the frequency of maintenance.