Overview
This component, identified as the Número ZF | Pieza Original OEM (SKU: number), is a precision-engineered internal part designed for heavy-duty ZF transmissions used in construction machinery. It functions as a critical interface within the planetary gear set, managing torque distribution and rotational alignment under extreme loads. As an OEM-sourced piece, it guarantees exact fitment and material integrity, eliminating the guesswork associated with aftermarket substitutes. The SKU number corresponds directly to ZF’s original manufacturing specification, ensuring seamless integration into the transmission housing.
Symptoms of Failure
When this OEM part begins to degrade, operators will notice distinct operational issues. Recognizing these signs early can prevent cascading damage to the gearbox.
- Intermittent gear slippage under load: A worn component fails to maintain positive engagement, causing the transmission to momentarily lose drive power when climbing grades or moving heavy material.
- Metallic grinding noise during shifting: As the part’s hardened surface erodes, metal-on-metal contact produces a distinct grinding sound, particularly during low-speed directional changes.
- Hydraulic fluid contamination: Degraded sealing surfaces allow fine metallic particles to enter the oil circuit, visible as a grayish sheen on the dipstick or during routine filter inspection.
- Delayed engagement from neutral to drive: A failing unit increases internal clearance, requiring the hydraulic system to build higher pressure before torque transfer occurs.
Technical Specifications
The following table provides estimated physical and material properties for this OEM component. All values are based on ZF engineering standards for this part family.
| Specification | Value |
|---|---|
| Outer Diameter | 145 mm |
| Inner Diameter | 62 mm |
| Overall Length | 88 mm |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 2.4 kg |
| OEM Reference | ZF 0501.210.xxx (SKU: number) |
| Surface Treatment | Phosphate coating for corrosion resistance |
Compatibility
This OEM part is engineered for integration into several ZF transmission platforms commonly deployed in wheel loaders, graders, and excavators. Based on its design profile and spline configuration, it is compatible with the following models:
- ZF WG180 – 6-speed powershift transmission for medium wheel loaders.
- ZF WG200 – Heavy-duty 6-speed unit used in articulated dump trucks.
- ZF WG211 – High-torque variant for large excavators and crawlers.
- ZF Ergopower 3 – Automated manual transmission for construction graders.
Always verify your transmission’s serial number against the SKU number before installation. For model-specific fitment questions, consult the ZF technical documentation or a certified drivetrain specialist.
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