Overview
The ZF 0769.123.906 PLANETARY GEAR is a critical torque-multiplying component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part sits within the planetary gearset assembly, directly transferring rotational force from the input shaft to the output shaft while managing load distribution across multiple pinions. As a central element in the gear train, it ensures smooth power flow and durability under high-stress industrial applications. The SKU 0769.123.906 is precision-machined to ZF’s exacting tolerances, making it a direct replacement for worn or damaged gears in heavy-duty transmissions. When paired with a robust 4108101174: HOUSING and a reliable 4108201298: HOUSING, this planetary gear maintains proper alignment and reduces vibration during operation.
Symptoms of Failure
- Gear slipping under load: A worn planetary gear loses tooth engagement, causing intermittent power loss or hesitation during acceleration, especially in WG100 transmissions.
- Metallic grinding or whining noise: Damaged gear teeth produce audible sounds from the transmission housing, often worsening at higher RPMs or when shifting gears.
- Oil contamination with metal debris: Flakes or particles in the transmission fluid indicate gear surface fatigue, which can clog filters and damage the 0501225852: OIL LEVEL GAGE and sealing components.
- Erratic shifting or delayed engagement: Excessive wear alters gear ratios, leading to harsh or delayed shifts that strain the entire drivetrain.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0769.123.906 |
| OEM Reference | ZF 0769.123.906 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 2.85 kg (6.28 lbs) |
| Outer Diameter | 145 mm |
| Inner Diameter (bore) | 45 mm |
| Tooth Count | 72 teeth (sun gear interface) |
| Heat Treatment | Carburized and tempered to HRC 58-62 |
Compatibility
This planetary gear is specifically designed for ZF WG-series transmissions, including the WG100, WG130, and WG131 models. It is also compatible with the WG180 and WG200 series when used in conjunction with the correct 4108301475: INPUT SHAFT and 0750116982: BALL BEARING. For proper sealing, always replace the 0501325471: SEALING RING during installation. Verify your transmission model’s serial number against ZF documentation to ensure fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101174 | HOUSING | Encloses and supports planetary gear assembly |
| 4108201298 | HOUSING | Secondary housing for gear alignment |
| 0501225852 | OIL LEVEL GAGE | Monitors transmission fluid level |
| 0501325471 | SEALING RING | Prevents oil leaks at gear interfaces |
| 0730365308 | TYPE PLATE | Identifies transmission model and specs |
| 4108301475 | INPUT SHAFT | Transfers engine torque to planetary gear |
| 0750116982 | BALL BEARING | Reduces rotational friction |
| 0630502039 | RETAINING RING | Secures gear on shaft |
| 0630531064 | RETAINING RING | Axial retention for planetary carrier |
| 0636302014 | SCREW PLUG | Seals oil passages in housing |
ZF 0769.123.906 PLANETARY GEAR – Gear RFQ Support
Use ZF 0769.123.906 PLANETARY GEAR as the reference when requesting gear support. Photos, visible markings, and transmission context help reduce sourcing uncertainty.
Part-Number Summary
Use ZF number 0769.123.906 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 | 0769.123.906 |
|---|---|
| Normalized SKU | 0769123906 |
| Part name | PLANETARY GEAR |
| Product category | gear |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
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.
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