Overview
The ZF 075012033501 ROLLER BEARING is a precision-engineered OEM genuine component designed to support radial and axial loads within the planetary gear sets of heavy-duty ZF transmissions. This bearing sits directly between the sun gear and the planetary carrier, ensuring smooth rotation and proper gear alignment under extreme torque conditions. As a critical wear item, the SKU 075012033501 maintains the tight tolerances required for efficient power transfer in construction machinery, such as wheel loaders and graders. When this bearing is in optimal condition, it minimizes friction and prevents metal-to-metal contact, directly extending the service life of the entire transmission assembly.
Symptoms of Failure
When the ZF 075012033501 roller bearing begins to degrade, operators will notice distinct performance issues. Recognizing these symptoms early can prevent catastrophic transmission damage:
- Low-frequency growling or rumbling noise from the transmission housing — This sound typically intensifies during acceleration or when the machine is under load, indicating uneven roller wear or spalling on the bearing raceways.
- Intermittent gear slipping or delayed engagement — As the bearing loses its dimensional stability, the planetary gear set can shift out of alignment, causing the transmission to momentarily lose power delivery to the wheels.
- Metallic debris in the transmission oil filter or magnetic drain plug — Flakes or fine silver particles in the fluid are a direct indicator that the roller bearing surface is breaking down, contaminating the hydraulic circuit.
- Excessive axial play in the output shaft — A worn bearing allows the shaft to move laterally, which can be felt as a clunk when shifting between forward and reverse gears.
Technical Specifications
| Part Number / SKU | 075012033501 |
| Bearing Type | Cylindrical Roller Bearing (Single Row) |
| Inner Diameter (d) | 55 mm |
| Outer Diameter (D) | 90 mm |
| Width (B) | 23 mm |
| Material | Through-Hardened Chrome Steel (100Cr6 / SAE 52100) |
| Dynamic Load Rating (C) | 72.5 kN |
| Static Load Rating (C0) | 48.0 kN |
| Weight | 0.42 kg |
| OEM Reference | ZF 0750.120.335.01 |
Compatibility
This genuine ZF roller bearing is engineered for use in the planetary gear sections of the following ZF transmission models commonly found in construction machinery:
- ZF WG180 — Used in mid-size wheel loaders and telehandlers.
- ZF WG200 — Common in heavy articulated dump trucks and graders.
- ZF WG210 — Found in high-torque crawler dozers and excavators.
- ZF 4WG-200 — Powers large front-end loaders and industrial tractors.
- ZF 6WG-250 — Installed in off-highway mining trucks and heavy material handlers.
Always verify the exact part number 075012033501 against your transmission’s service manual to ensure correct fitment. This bearing is not interchangeable with standard commercial bearings due to its specific cage design and heat treatment profile.
