Overview
This OEM genuine ZF 2093.078.044 T 7227 L component is a critical internal shaft assembly designed for heavy-duty construction machinery transmissions. It functions as a precision-machined power transfer element within the planetary gear set, ensuring smooth torque distribution from the engine to the differential. The SKU 2093.078.044 sits directly within the main transmission housing, interfacing with the DIFFERENTIAL assembly to manage load balance under high-stress operating conditions. Manufactured to ZF’s exacting tolerances, this part guarantees minimal backlash and extended service life in excavators, wheel loaders, and graders.
Symptoms of Failure
When the ZF 2093.078.044 begins to wear, operators often notice intermittent gear slipping under load, particularly during uphill travel or when engaging the bucket. A second common failure sign is metallic grinding noises from the transmission housing, indicating excessive clearance between the shaft and the TAPER ROLLER BEARING. Third, oil leaks near the output flange may develop as the shaft seal surface becomes scored. Finally, vibration through the driveline at low speeds often points to this part’s deterioration, requiring immediate replacement to avoid cascading damage to the DIFFERENTIAL and DIFF.HOUSING.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 2093.078.044 (T 7227 L) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 4.2 kg (9.26 lbs) |
| Overall Length | 245 mm |
| Shaft Diameter | 45 mm (bearing journal) |
| OEM Reference | ZF 2093.078.044 |
| Heat Treatment | Carburized & tempered to HRC 58-62 |
| Surface Finish | Ground, Ra ≤ 0.4 µm |
Compatibility
This genuine ZF shaft assembly is engineered for the WG180, WG200, and WG210 series transmissions commonly found in construction machinery. It is also compatible with select Ecomat 2 and Ecomat 4 variants used in medium-duty wheel loaders. Always verify your transmission model tag before ordering. For complete rebuilds, pair this part with the SPRING PIN and THRUST WASHER to ensure proper axial clearance.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109024 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports shaft radial/axial loads |
| 2093209095 | DIFFERENTIAL | Secondary torque split unit |
| 2093309071 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Secures shaft alignment |
| 0730300820 | THRUST WASHER | Controls axial end play |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheels |
| 2097309085 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Reduces friction on gear faces |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Engages with ring gear |
Frequently Asked Questions
Q: Can the ZF 2093.078.044 be reused after disassembly?
No. This is a wear-critical component. ZF recommends replacement during any major transmission overhaul to prevent premature failure of the DIFFERENTIAL assembly.
Q: What torque specification applies to the retaining nut on this shaft?
Use 180 Nm (133 ft-lbs) with thread locker. Always replace the SPRING PIN during reinstallation.
Q: Does this part fit the ZF WG180 transmission with a serial number prefix of 7227?
Yes. The “T 7227 L” suffix confirms compatibility with WG180 and WG200 series units built after 2015.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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