Overview
The ZF 0750.117.515 RODAMIENTO DE RODILLOS is a precision-engineered roller bearing designed for the internal planetary gear sets of ZF WG250, WG251, and WG258 construction machinery transmissions. This OEM original part (SKU: 0750.117.515) supports radial loads within the transmission housing, ensuring smooth rotation of the sun gear and planet carrier assembly. It is a critical component for maintaining gear alignment and torque transfer efficiency in heavy-duty applications. When replacing this bearing, technicians often inspect the surrounding 4143101009 HOUSING and 4143301025 HOUSING for wear, as these parts share the same load-bearing interface.
Symptoms of Failure
- Grinding or whining noise during gear engagement: A worn 0750.117.515 bearing produces metallic grinding sounds, especially under load, indicating roller degradation.
- Vibration in the transmission housing: Excessive play in the roller bearing causes driveline vibration, often felt through the chassis during acceleration or deceleration.
- Oil contamination with metallic particles: Flaking or spalling of the bearing race releases steel debris into the transmission fluid, visible during oil changes.
- Intermittent gear slipping or delayed engagement: Loss of bearing support alters gear mesh alignment, leading to erratic shifting or temporary power loss.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0750.117.515 |
| Type | Cylindrical Roller Bearing |
| Inner Diameter (d) | 75 mm (estimated) |
| Outer Diameter (D) | 117 mm (estimated) |
| Width (B) | 31 mm (estimated) |
| Material | Case-hardened bearing steel (DIN 100Cr6) |
| Weight | 1.2 kg (approx.) |
| OEM Reference | ZF 0750.117.515 |
Compatibility
This roller bearing is specifically engineered for the following ZF transmission models used in construction machinery:
- ZF WG250 (4-speed powershift)
- ZF WG251 (5-speed variant)
- ZF WG258 (heavy-duty off-highway)
It may also be compatible with earlier WG180 and WG200 series transmissions, though verification of housing dimensions is recommended. During installation, ensure the 0634313603 O-RING and 4475280018 SCREW PLUG are replaced to prevent fluid leaks from the bearing cavity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Encloses the planetary gear set and bearing |
| 4143301025 | HOUSING | Secondary housing for output shaft support |
| 0634313603 | O-RING | Seals the bearing cavity against oil leaks |
| 4475280018 | SCREW PLUG | Closes the bearing lubrication port |
| 0501342341 | SUPPORT RING | Axial retention for the bearing outer race |
| 4143298457 | SEAL KIT | Complete seal replacement for the bearing area |
| 0634313591 | O-RING | Secondary seal for the housing joint |
| 0636101068 | CAP SCREW | Fastener for the bearing retaining plate |
| 4143221013 | THROTTLE VALVE | Controls hydraulic flow to the clutch pack |
| 0634304484 | O-RING | Seals the throttle valve bore |
