Overview
The ZF 0750.119.112 BEARING ROLLER is a critical load-bearing component engineered specifically for the WG150 series transmission. This OEM genuine part reduces rotational friction between the planetary gear set and the shaft, ensuring smooth torque transfer under high-stress conditions. The SKU 0750.119.112 is precision-machined to ZF’s exacting tolerances, directly supporting the gear train’s alignment within the main housing. When paired with a robust TRANSMISSION HOUSING or a TRANSMISSION HOUSING, this bearing roller maintains the axial stability required for heavy-duty industrial applications.
Symptoms of Failure
- Gear slipping under load: Worn rollers cause uneven spacing, leading to intermittent power loss during acceleration or uphill operation.
- Metallic grinding noise from the transmission: Degraded bearing surfaces produce a distinct whining or grinding sound, especially in neutral or low gear.
- Oil contamination with metallic debris: Flaking roller material mixes with transmission fluid, visible as silver particles on the dipstick or during oil changes.
- Vibration through the shift lever: Excessive radial play from a failing roller transmits harmonic vibrations into the cab or chassis.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0750.119.112 |
| Outer Diameter | 42.0 mm |
| Inner Diameter | 28.0 mm |
| Width | 22.0 mm |
| Material | Case-hardened steel (DIN 1.3505) |
| Weight | 0.18 kg |
| OEM Reference | ZF 0750.119.112 |
| Heat Treatment | Carburized & tempered |
Compatibility
While primarily designed for the WG150 series, this bearing roller is also compatible with ZF WG180, WG200, and WG250 transmissions that share the same planetary carrier architecture. Always verify the part number against your transmission’s TYPE PLATE before installation. The roller interfaces directly with the sun gear shaft, which is secured by a GROOVED STUD to prevent axial movement. For optimal sealing, ensure the housing bore is clean and free of debris.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Encloses gear train and supports bearing seats |
| 4642301208 | TRANSMISSION HOUSING | Alternate housing variant for WG150 |
| 0730365125 | TYPE PLATE | Identification plate with transmission specs |
| 0631311009 | GROOVED STUD | Secures bearing roller and shaft alignment |
| 4642301168 | SCREEN SHEET | Filters debris from oil circulation |
| 4642301169 | SCREEN SHEET | Fine-mesh screen for high-flow systems |
| 0636100621 | HEXAGON SCREW | Fastens housing cover to main body |
| 0630361029 | SEALING CAP | Prevents oil leakage from inspection ports |
| 4642306254 | ADAPTER | Connects transmission to PTO unit |
| 0634303340 | O-RING | Seals hydraulic passages between components |
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