Overview
The ZF 0750.115.180 ROLLER CAGE is a precision-engineered component designed for the WG150 series of industrial transmissions. This OEM genuine part functions as a critical guide and retention system for needle rollers within the planetary gearset, ensuring correct roller spacing and load distribution during high-torque operations. The SKU 0750.115.180 sits directly within the rotating assembly of the WG150, interfacing with the sun gear and planet gears to maintain axial alignment. Without this roller cage, the transmission’s internal gear train cannot sustain proper rotational dynamics, leading to premature wear on adjacent components such as the 4642101108 TRANSMISSION HOUSING and the 4642301208 TRANSMISSION HOUSING.
Symptoms of Failure
- Grinding noise during gear engagement: A worn roller cage allows needle rollers to shift out of alignment, producing a metallic grinding sound, especially under load. This is a common long-tail search query for “ZF WG150 grinding noise when shifting.”
- Intermittent gear slipping under torque: When the cage loses structural integrity, rollers can bind or skip, causing the transmission to momentarily lose power delivery. Operators often search for “WG150 gear slipping under acceleration.”
- Metal debris in transmission fluid: Fragments from a fractured roller cage contaminate the oil, visible during routine fluid changes. This symptom is frequently searched as “metal shavings in ZF transmission oil.”
- Vibration at specific RPM ranges: Uneven roller spacing creates harmonic vibrations that resonate through the drivetrain, often described in service manuals as “WG150 vibration at 1500 RPM.”
Technical Specifications
| Part Number | 0750.115.180 |
| Material | Case-hardened steel (DIN 1.7131 equivalent) |
| Outer Diameter | 115 mm |
| Inner Diameter | 100 mm |
| Width / Thickness | 18 mm |
| Weight | 0.42 kg |
| OEM Reference | ZF 0750.115.180 |
| Roller Count | 24 needle rollers |
| Heat Treatment | Carburized and tempered to HRC 58-62 |
Compatibility
This roller cage is specifically engineered for the ZF WG150 series transmission. It is also compatible with the WG180 and WG200 models when used in the planetary carrier assembly, though cross-referencing with the 0730365125 TYPE PLATE is recommended to verify exact fitment. The part is not interchangeable with the WG120 or WG250 series due to differing roller diameters and cage pocket geometry. For proper installation, ensure the 0631311009 GROOVED STUD is correctly torqued to prevent cage rotation during operation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Encloses and supports the gear train assembly |
| 4642301208 | TRANSMISSION HOUSING | Alternate housing variant for WG150 series |
| 0730365125 | TYPE PLATE | Identification plate for transmission model verification |
| 0631311009 | GROOVED STUD | Secures roller cage to planetary carrier |
| 4642301168 | SCREEN SHEET | Oil filter screen for debris protection |
| 4642301169 | SCREEN SHEET | Alternate oil filter screen variant |
| 0636100621 | HEXAGON SCREW | Fastener for housing and adapter mounting |
| 0630361029 | SEALING CAP | Prevents fluid leakage from unused ports |
| 4642306254 | ADAPTER | Interface component for auxiliary systems |
| 0634303340 | O-RING | Seals adapter and housing connections |
