Boxin · Hengzhen · Botrust
Precision Manufacturing・Powering the World
Forklift axle
This is a forklift drive axle (half‑shaft) designed to equip HEPU forklifts. Made from 40Cr alloy structural steel, it serves as the core load‑bearing and power‑transmission component of the forklift’s travel drive system, offering high strength, excellent toughness, and superior wear and impact resistance. It is well suited to heavy‑duty operating conditions, ensuring stable and reliable power transmission.
- Product Description
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1. Basic Information and Positioning
- Target Audience : HEPU Automobile manufactures industrial forklifts—both electric and internal‑combustion—for heavy‑duty material handling in warehousing, logistics, and factory settings.
- Component Role : The core component of a forklift’s drive axle (the half‑shaft/drive shaft) connects at one end to the differential and at the other to the wheel hub, transmitting torque to drive the wheels while simultaneously bearing the vehicle’s heavy loads, impacts, and cyclic stresses. It is a critical part for ensuring the stable operation of the forklift’s travel system.
- Supply Attribute : A dedicated shaft component designed to match HEP Automobile, compliant with the installation dimensions, fit tolerances, and performance requirements of its forklift models. It can directly replace the original equipment part, ensuring optimal compatibility and reliability of the drivetrain.
2. Material and Process Characteristics
- Materials ：40Cr Medium-carbon alloy structural steel is a classic material for heavy-duty shaft components.
- Heat treatment process: Employed Quenching and tempering (quenching followed by high-temperature tempering) , achieving excellent overall mechanical properties, with a core hardness typically ranging from HRC 28 to 32, thus combining high strength and high toughness; critical journal and spline sections can undergo high-frequency surface hardening, attaining a hardness of HRC 50 or higher, significantly enhancing wear resistance and contact fatigue strength, thereby meeting the demanding operating conditions of forklifts characterized by frequent starts and stops and heavy‑load impacts.
- Manufacturing Process: The journal and spline sections are machined using precision turning and grinding, achieving high dimensional accuracy and surface finish. This ensures tight, high‑precision fits with bearings, gears, and wheel hubs, reducing transmission noise, minimizing wear, and extending the shaft’s service life.
3. Structural Features
- Overall structure : A typical stepped shaft design, with the shaft body comprising multiple sections of varying diameters and splined/keyway segments, designed to accommodate the installation and positioning of bearings, oil seals, gears, and wheel hubs, thereby enabling power transmission and component support.
- Functional Segmentation ：
- One end is a splined connection section: it mates with the half‑shaft gear of the drive axle differential to transmit high torque. The splined design ensures reliable power transmission, preventing slippage or loosening.
- Intermediate journal section: Used to mount bearings, oil seals, and other components; it supports the shaft and ensures coaxial alignment, while bearing radial loads and impact. Its stepped transition design effectively mitigates stress concentrations, thereby enhancing fatigue resistance.
- The other end is the wheel‑mounting section, which connects to the hub or wheel. Certain shaft sections feature threads or flanges to facilitate secure wheel installation and ensure a reliable connection between the wheel and the axle.
4. Performance and Application Value
- Core Advantages : Made from 40Cr steel and subjected to quenching and tempering followed by surface hardening, this shaft can withstand the alternating loads, impact loads, and torsional stresses encountered during heavy‑duty forklift operations, minimizing deformation and fracture. Its precision‑machined journal and splines ensure high mating accuracy and reliability of the transmission system, reducing the risk of failure and making it well suited for the high‑load, high‑frequency operating conditions typical of industrial forklifts.
- Compatible Scenarios : The drive axle half-shafts and travel drive axles of HEP forklifts can also be adapted to heavy-duty applications such as steering axle shafts and mast-lifting axles, serving as critical components that ensure the stable operation of the forklift’s transmission and travel systems.
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