Overview
The ZF 0750.117.618 TAPERED ROLLER BEARING is a precision-engineered OEM genuine component designed to manage axial and radial loads within the planetary gear sets of ZF WG100, WG130, and WG131 transmissions. This bearing sits directly on the output shaft or countershaft assembly, ensuring smooth rotational motion and proper gear alignment under heavy torque conditions. The SKU 0750.117.618 is a direct replacement part that maintains factory tolerances, preventing premature wear on adjacent components such as the 4108101115 HOUSING and 4108201277 HOUSING.
Symptoms of Failure
- Growling or rumbling noise during gear engagement: A worn 0750.117.618 bearing produces a low-frequency growl that intensifies under load, often mistaken for gear whine.
- Excessive end-play or shaft wobble: As the tapered rollers degrade, axial clearance increases, causing the output shaft to shift and leading to misalignment with the 4108301304 BEARING COVER.
- Metallic debris in transmission oil: Flaking or spalling of the bearing raceways introduces fine steel particles into the lubricant, which can clog the 0501313402 DRAIN VALVE and accelerate wear on other internal parts.
- Intermittent gear slipping under heavy load: Loss of bearing preload allows the gear train to shift slightly, causing momentary loss of torque transfer and harsh shifting.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0750.117.618 |
| Type | Tapered Roller Bearing (single row) |
| Bore Diameter | 75 mm |
| Outer Diameter | 117 mm |
| Width | 30 mm |
| Material | Case-hardened 52100 bearing steel |
| Weight | 1.45 kg |
| OEM Reference | ZF 0750.117.618 |
| Dynamic Load Rating | 145 kN |
| Static Load Rating | 190 kN |
Compatibility
This bearing is engineered specifically for ZF WG-series transmissions, including the WG100, WG130, and WG131 models. It is also compatible with certain variants of the WG180 and WG200 series where the output shaft bearing bore matches the 75 mm inner diameter. Always verify the housing condition of the 4108201277 HOUSING before installation, as a worn housing can compromise bearing alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101115 | HOUSING | Encloses the bearing and supports the output shaft assembly |
| 4108201277 | HOUSING | Secondary housing for countershaft bearing support |
| 0501313402 | DRAIN VALVE | Controls oil drainage from the bearing cavity |
| 4108301304 | BEARING COVER | Seals the bearing bore and retains lubricant |
| 4108306173 | GASKET | Provides a leak-proof seal between housing and cover |
| 0750110040 | SHAFT SEAL | Prevents oil leakage along the rotating shaft |
| 4108111051 | POWER TAKE-OFF | Transfers engine power to auxiliary equipment |
| 0730106757 | WASHER | Spacer for bearing preload adjustment |
| 0730106758 | WASHER | Thicker spacer for axial clearance tuning |
| 0730106759 | WASHER | Thinnest spacer for fine clearance adjustment |
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