ZF 2093.070.007 TRA 20 | OEM Genuine Part

Overview

The ZF 2093.070.007 TRA 20 is a precision-engineered OEM genuine component designed for the final drive assembly of heavy-duty construction machinery transmissions. This part functions as a critical load-bearing element within the differential housing, managing torque distribution from the axle shafts to the wheels. As an integral part of the ZF drivetrain system, the SKU 2093.070.007 ensures smooth power transfer and reduces mechanical stress on surrounding gears. It is specifically manufactured to ZF’s exacting tolerances, making it a direct replacement for worn units in demanding off-highway applications such as wheel loaders and graders.

Symptoms of Failure

• Oil leaks around the differential housing: When the ZF 2093.070.007 seal surface degrades, transmission fluid may seep past the component, leading to low lubricant levels and potential gear damage.
• Gear slipping under load: A worn TRA 20 can cause intermittent power loss during acceleration or climbing, often accompanied by a grinding noise from the axle area.
• Excessive backlash in the drivetrain: Operators may notice a clunking sensation when shifting between forward and reverse, indicating that the 2093.070.007 has lost its precise fit within the differential assembly.
• Vibration at low speeds: Degraded internal geometry of this part can produce rhythmic shaking that intensifies during tight turns or when operating on uneven terrain.

Technical Specifications

Parameter	Value
Part Number	2093.070.007
Material	Case-hardened alloy steel
Weight	2.8 kg (6.2 lbs)
Outer Diameter	142 mm
Inner Diameter	72 mm
Height	38 mm
OEM Reference	ZF 2093.070.007
Surface Finish	Ground and polished

Compatibility

This genuine ZF 2093.070.007 TRA 20 is primarily compatible with the WG180, WG200, and WG250 transmission series commonly found in construction machinery. It also fits select models of the ZF 4WG-200 and 6WG-200 power shift transmissions. For precise fitment verification, always cross-reference your transmission serial number with the OEM parts catalog. The component is designed to work in conjunction with the 2093109022 DIFFERENTIAL and the 2093209096 DIFFERENTIAL to maintain proper gear mesh within the axle assembly.

Installation Notes

When replacing the 2093.070.007, it is strongly recommended to also inspect the 0750117075 TAPER ROLLER BEARING for wear, as bearing degradation can accelerate damage to the TRA 20. Additionally, verify the condition of the 2093309073 DIFF.HOUSING for cracks or distortion before reassembly. Always use new seals and gaskets during installation to prevent future oil leaks.

Related Components

Part Number	Name	Function
2093109022	DIFFERENTIAL	Distributes torque between left and right wheels
0750117075	TAPER ROLLER BEARING	Supports axial and radial loads on rotating shafts
2093209096	DIFFERENTIAL	Secondary differential unit for multi-axle configurations
2093309073	DIFF.HOUSING	Encloses and protects differential gears
0631100223	SPRING PIN	Secures components within the differential assembly
0730300820	THRUST WASHER	Reduces friction between rotating and stationary parts
4482360002	AXLE BEVEL GEAR	Transfers power from differential to axle shafts
2097309085	DIFFERENTIAL AXLE	Connects differential to wheel hubs
5838300811	THRUST WASHER	Controls axial play in gear sets
4482360001	DIFFERENTIAL BEVEL GEAR	Enables speed differentiation between wheels

Frequently Asked Questions

Q: How do I know if the ZF 2093.070.007 is the correct part for my transmission?
A: Verify your transmission model number (e.g., WG180 or WG200) and compare the part dimensions to your existing component. The 2093.070.007 is a direct OEM replacement and should match the original part exactly.

Q: Can I replace this part without removing the entire differential assembly?
A: In most cases, partial disassembly of the axle housing is required to access the TRA 20. However, it is often possible to replace it without fully removing the differential carrier, provided you have the correct puller tools.

Q: What is the typical lifespan of this component in heavy-duty use?
A: With proper lubrication and regular maintenance, the ZF 2093.070.007 can last 5,000 to 8,000 operating hours in construction machinery. Harsh conditions like constant mud or heavy loads may reduce this interval.