Overview
The ZF 2095.309.068 CROWN WHEEL is a critical final-drive component engineered for heavy-duty construction machinery transmissions. As an OEM genuine part, this crown wheel (also known as a ring gear) transfers torque from the differential assembly to the axle shafts, enabling smooth power delivery under extreme loads. The SKU 2095.309.068 is precision-machined to interface directly with the 2095109019: DIFFERENTIAL and the 2095209037: DIFFERENTIAL unit, ensuring exact gear mesh and minimal backlash. Located within the transmission’s final drive housing, this crown wheel is paired with a pinion gear to achieve the necessary gear reduction for tracked or wheeled loaders, dozers, and excavators.
Symptoms of Failure
When the ZF 2095.309.068 crown wheel wears out, operators typically notice these specific failure indicators:
- Loud whining or howling noise from the axle housing — This occurs when gear teeth become pitted or chipped, often due to fatigue or contamination.
- Intermittent gear slipping under load — A worn crown wheel loses proper tooth contact, causing the transmission to momentarily lose torque during acceleration or climbing.
- Metallic debris in the transmission oil — Flakes or particles in the fluid indicate advanced wear of the crown wheel’s tooth flanks or the 0750117075: TAPER ROLLER BEARING that supports it.
- Vibration through the chassis during turns — Uneven wear on the crown wheel can cause differential binding, especially when paired with a failing 2095309059: DIFF.HOUSING.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2095.309.068 |
| Type | Crown Wheel (Ring Gear) |
| Outer Diameter | 320 mm (estimated) |
| Inner Diameter | 180 mm (estimated) |
| Number of Teeth | 48 (estimated) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 12.5 kg (27.5 lbs) |
| OEM Reference | ZF 2095.309.068 |
| Hardness | 58-62 HRC (surface) |
Compatibility
This crown wheel is designed for use in ZF’s heavy-duty transmission series commonly found in construction machinery. It is compatible with the following ZF transmission models:
- ZF WG180
- ZF WG200
- ZF WG120
- ZF 4WG-200
- ZF 5WG-180
These transmissions are used in wheel loaders, dozers, and graders from manufacturers such as Caterpillar, Volvo, and Liebherr. Always verify the tooth count and mounting pattern against your existing crown wheel before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109019 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports crown wheel and pinion shaft |
| 2095209037 | DIFFERENTIAL | Secondary differential unit for planetary axles |
| 2095309059 | DIFF.HOUSING | Encloses differential and crown wheel assembly |
| 0631329086 | SPRING PIN | Secures crown wheel to differential carrier |
| 0730300820 | THRUST WASHER | Controls axial clearance in differential |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2095309081 | DIFFERENTIAL AXLE | Connects differential to side gears |
| 5838300811 | THRUST WASHER | Reduces friction in differential assembly |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Matches with crown wheel for final drive ratio |
