Overview
The ZF 2093.310.201 SLOTTED NUT is a precision-engineered locking component designed to secure critical rotating assemblies within ZF heavy-duty transmissions. This OEM genuine part (SKU: 2093.310.201) functions as a positive-locking fastener on the differential pinion shaft and axle bevel gear stacks, preventing axial movement under extreme torque loads. In construction machinery transmissions such as the WG series, this slotted nut works in concert with a 0750117075: TAPER ROLLER BEARING to maintain precise preload on the differential assembly. Without this nut properly torqued and staked, the entire drivetrain’s gear mesh geometry can shift, leading to accelerated wear on adjacent components like the 5838109012: DIFFERENTIAL.
Symptoms of Failure
When the ZF 2093.310.201 slotted nut loses its locking integrity, operators may notice distinct failure modes. Oil leaks from the axle housing flange often occur because the loosened nut allows the differential carrier to shift, breaking the seal. Gear slipping under load is another common symptom, particularly when climbing grades or reversing, as the pinion depth changes. Excessive backlash in the drivetrain can be felt as a clunk when shifting between forward and reverse, indicating the nut has backed off. Finally, metal debris in the transmission oil filter may appear as the loosened assembly grinds against the 5838300626: DIFFERENTIAL HOUSING.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 2093.310.201 |
| Thread Size | M30 x 1.5 (estimated) |
| Hex Flats | 46 mm |
| Material | Case-hardened alloy steel (SAE 8620) |
| Weight | 0.18 kg (0.40 lbs) |
| OEM Reference | ZF 2093.310.201 |
| Finish | Zinc-plated, yellow passivate |
| Locking Feature | Slotted for cotter pin or stake |
Compatibility
This slotted nut is a standard fitment across multiple ZF heavy-duty transmission models used in construction machinery. It is commonly found in the WG180, WG200, and WG250 series transmissions. Additionally, it appears in the ZF 4WG-200 and ZF 5WG-200 powershift transmissions. The nut secures the pinion shaft in the 2093209023: DIFFERENTIAL assembly, which is shared across these models. Always verify the thread pitch against your specific transmission’s service manual before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports pinion shaft radial/axial loads |
| 2093209023 | DIFFERENTIAL | Alternate differential assembly variant |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Retains slotted nut in position |
| 5838300811 | THRUST WASHER | Controls axial clearance in differential |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 5838300633 | AXLE | Drives wheel hubs |
| 5838300753 | THRUST WASHER | Side gear thrust management |
| 5838300818 | THRUST WASHER | Pinion gear thrust management |
Frequently Asked Questions
Q: Can I reuse the ZF 2093.310.201 slotted nut after removal?
A: ZF recommends always replacing this nut with a new OEM part (SKU 2093.310.201) after any disassembly. The locking slots deform during initial torque application, and reuse can lead to preload loss and subsequent differential failure.
Q: What torque specification should I use for this nut?
A: For the 2093.310.201 slotted nut on a WG200 transmission, the typical torque range is 280-320 Nm (207-236 ft-lbs). Always consult your specific transmission service manual, as the torque varies with the 0750117075: TAPER ROLLER BEARING preload specification.
Q: Does this nut come with a cotter pin?
A: No, the nut is supplied without a cotter pin. You must order the 0631329088: SPRING PIN separately to lock the nut after final torque is applied.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
