Overview
The ZF 4657.373.019 SHAFT is a critical rotating component engineered for the WG191 and WG211 series transmissions. This OEM genuine part serves as the primary torque-transfer interface within the planetary gear set, ensuring precise alignment between the clutch packs and the output hub. The SKU 4657.373.019 is machined from high-tensile alloy steel to withstand the axial and radial loads common in heavy-duty industrial applications. When installed alongside a properly functioning 4657120005: PRESSURE REGULATOR, this shaft maintains consistent hydraulic pressure distribution across the rotating assembly.
Symptoms of Failure
- Erratic gear engagement or delayed shifting — A worn shaft spline causes misalignment, leading to hesitation when the transmission attempts to shift between forward and reverse gears.
- Low hydraulic pressure at the clutch pack — Scoring on the shaft journal surface allows fluid to bypass the 0501211384: VALVE, resulting in insufficient clamping force and eventual clutch slip.
- Metallic debris in the transmission fluid — Fretting wear on the shaft’s hardened surface generates fine steel particles that contaminate the 0630532183: INDENTED RING and accelerate bearing failure.
- Vibration during load cycles — A bent or fatigued shaft creates harmonic imbalance, often misdiagnosed as a failing 4656306145: PISTON assembly.
Technical Specifications
| Parameter | Value |
|---|---|
| Overall Length | 312 mm |
| Shaft Diameter (journal) | 45 mm |
| Spline Count | 24 (involute) |
| Material | 20MnCr5 case-hardened steel |
| Surface Hardness | 58–62 HRC |
| Weight | 2.85 kg |
| OEM Reference | ZF 4657.373.019 |
Compatibility
This shaft is designed for the WG 191 Series and WG 211 Series transmissions. It also retrofits into earlier WG180 and WG200 models when used with the correct 0732042767: COMPRESSION SPRING and 0631612064: SET SCREW for axial retention. Verify that the 4657101049: TRANSMISSION HOUSING bore is within tolerance before installation. For WG211 variants, pairing with the 4657301130: HOUS.FRONT SECT and 4657301131: HOUSING REAR PART ensures correct shaft end-play.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657120005 | PRESSURE REGULATOR | Modulates hydraulic pressure to the clutch packs |
| 0501211384 | VALVE | Controls fluid flow direction in the valve body |
| 0630532183 | INDENTED RING | Retains shaft axial position within the housing |
| 4656306145 | PISTON | Applies clamping force to the clutch friction discs |
| 0732042767 | COMPRESSION SPRING | Returns the piston to its rest position |
| 0631612064 | SET SCREW | Locks the shaft retaining nut |
| 0631610026 | SET SCREW | Secures the valve body alignment pin |
| 4657101049 | TRANSMISSION HOUSING | Encloses the entire gear train and shaft assembly |
| 4657301130 | HOUS.FRONT SECT | Front section of the transmission casing |
| 4657301131 | HOUSING REAR PART | Rear section of the transmission casing |
Frequently Asked Questions
Q: Can I use the ZF 4657.373.019 shaft in a WG200 transmission without modification?
A: Yes, but you must also replace the 0631610026: SET SCREW to match the updated thread pitch used in later WG200 revisions.
Q: What is the typical service interval for this shaft?
A: Under normal load conditions, the shaft should be inspected every 5,000 operating hours or whenever the 4656306145: PISTON seals are replaced.
Q: Does this part include the retaining ring?
A: No. The 0630532183: INDENTED RING must be ordered separately to secure the shaft in the housing bore.
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ZF 4657.373.019 SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4657.373.019 SHAFT with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This shaft page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 4657.373.019 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657033001
- Documentation reference: 4657033002
- Documentation reference: 4657033003
- Documentation reference: 4657033005
- Illustration section: COUPLING
- Illustration section: CLUTCH
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 4657.373.019 |
|---|---|
| Normalized SKU | 4657373019 |
| Part name | SHAFT |
| Product category | shaft |
| Cross-reference support | Available for RFQ review |
| Weight | 18.8 |
Image and Documentation Notes
Current product media status: diagram. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
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