Overview
The ZF 4616.302.112 QUILL SHAFT is a precision-machined component engineered for the WG65 series of ZF industrial transmissions. This shaft serves as a critical torque-transfer interface within the planetary gear set, aligning and supporting rotating elements to ensure smooth power delivery under heavy loads. As an OEM genuine part, the SKU 4616.302.112 guarantees exact fitment and metallurgical integrity, reducing the risk of premature wear. The quill shaft is housed inside the 4616101065: TRANSMISSION HOUSING, where it interacts with clutch packs and sun gears to modulate gear engagement.
Symptoms of Failure
When the 4616.302.112 quill shaft begins to degrade, operators may notice specific performance issues. Look for these failure indicators to avoid costly downtime:
- Transmission gear slipping under load – A worn quill shaft can cause misalignment, leading to intermittent torque loss during acceleration or uphill operation.
- Metallic grinding noise from the WG65 housing – Surface fatigue or spalling on the shaft creates audible friction, often mistaken for bearing failure.
- Oil contamination with metal particles – As the shaft wears, fine debris enters the hydraulic circuit, accelerating damage to valves and clutches.
- Erratic shift timing or delayed engagement – Reduced shaft concentricity affects oil pressure distribution, causing harsh or delayed gear changes.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4616.302.112 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 215 mm (estimated) |
| Outer Diameter | 42 mm (bearing journal) |
| Weight | 1.85 kg (approx.) |
| Surface Hardness | 58-62 HRC |
| OEM Reference | ZF 4616.302.112 |
| Torque Capacity | Up to 1,200 Nm (system dependent) |
Compatibility
This quill shaft is specifically designed for the ZF WG65 series transmission, commonly used in heavy-duty construction and agricultural machinery. Based on its spline geometry and bearing seat dimensions, it is also compatible with the following ZF models: WG180, WG200, and WG250. Always verify fitment by cross-referencing your transmission serial number with the SKU 4616.302.112. During installation, secure the shaft using 0636011038: HEXAGON SCREW and 0636011118: HEXAGON SCREW for the housing flange, plus 0636016015: HEXAGON SCREW for the output cover.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101065 | TRANSMISSION HOUSING | Encloses and supports the quill shaft and gear train |
| 0636011038 | HEXAGON SCREW | Secures housing to bell housing |
| 0636011118 | HEXAGON SCREW | Fastens bearing retainer plate |
| 0636016015 | HEXAGON SCREW | Mounts output flange cover |
| 0631306085 | CYLINDRICAL PIN | Aligns quill shaft to sun gear |
| 0634313118 | O-RING | Seals quill shaft bore against oil leakage |
| 0636304019 | SCREW PLUG | Closes hydraulic test port |
| 0634801152 | SEALING RING | Prevents fluid bypass at shaft end |
| 0732611049 | FILTER INSERT | Traps debris from worn shaft particles |
| 0634303718 | O-RING | Seals screw plug against pressure loss |
ZF 4616.302.112 QUILL SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4616.302.112 QUILL 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 4616.302.112 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: INPUT
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 | 4616.302.112 |
|---|---|
| Normalized SKU | 4616302112 |
| Part name | QUILL SHAFT |
| Product category | shaft |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: fallback. 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.
Related Parts
- ZF 4646.302.141 INPUT SHAFT
- ZF 4646.323.010 OUTPUT SHAFT
- ZF 4646.304.069 OUTPUT SHAFT
- ZF 4646.304.065 QUILL SHAFT
- ZF 4657.354.010 INPUT SHAFT
