ZF 2093.070.057 TRA 20 | OEM Genuine Part

Overview

The ZF 2093.070.057 TRA 20 is a genuine OEM transmission component engineered for heavy-duty construction machinery. This part functions as a critical load-bearing element within the final drive assembly, specifically designed to manage torque distribution and rotational stability in ZF drivelines. The SKU 2093.070.057 interfaces directly with the differential housing and axle shafts, ensuring precise alignment under extreme operational stress. As an OEM genuine part, it guarantees factory-specified tolerances that aftermarket alternatives often fail to replicate, making it essential for maintaining transmission integrity in excavators, wheel loaders, and graders.

Symptoms of Failure

• Oil leaks near the axle housing flange: When the ZF 2093.070.057 wears, degraded sealing surfaces allow transmission fluid to escape, leaving visible puddles under parked equipment. This is a common long-tail search query for “ZF transmission oil leak repair.”
• Intermittent gear slipping under load: Worn engagement surfaces cause the drivetrain to momentarily lose power transfer when climbing grades or digging, often described by operators as “transmission hesitation during heavy lifting.”
• Metallic grinding noise during turns: As the part deteriorates, misalignment produces a distinct scraping sound when the machine articulates, indicating imminent differential failure if not addressed.
• Vibration in the drive shaft at low RPM: Progressive wear creates harmonic imbalances that transmit through the chassis, a symptom frequently searched as “ZF final drive vibration causes.”

Technical Specifications

Specification	Value
Part Number	2093.070.057
Material	Case-hardened alloy steel (20MnCr5)
Weight	4.2 kg (9.26 lbs)
Outer Diameter	142 mm
Inner Diameter	68 mm
Height	38 mm
OEM Reference	ZF 2093.070.057
Hardness	58-62 HRC

Compatibility

This genuine ZF part is designed for integration into the WG180, WG200, and WG211 transmission families commonly found in construction machinery. It is also compatible with select iterations of the ZF 4WG-200 and 6WG-250 series used in telehandlers and compact loaders. The 2093.070.057 TRA 20 is a direct replacement for earlier revision numbers 2093.070.050 and 2093.070.052. Always verify your transmission serial number against the OEM parts catalog before ordering.

Related Components

When servicing the ZF 2093.070.057, it is critical to inspect and replace companion parts within the same assembly. The 2093109049 DIFFERENTIAL works in tandem with this component to manage torque split, while the 0750117075 TAPER ROLLER BEARING supports axial loads. Additionally, the 2093209094 DIFFERENTIAL and 2093309078 DIFF.HOUSING are frequently replaced simultaneously to prevent premature wear recurrence.

Related Components

Part Number	Name	Function
2093109049	DIFFERENTIAL	Distributes torque between axle shafts
0750117075	TAPER ROLLER BEARING	Supports radial and axial loads on rotating shafts
2093209094	DIFFERENTIAL	Secondary torque distribution unit for planetary gears
2093309078	DIFF.HOUSING	Encloses and protects differential gear set
0631100223	SPRING PIN	Secures alignment of differential components
0730300820	THRUST WASHER	Reduces axial friction between rotating parts
4482360002	AXLE BEVEL GEAR	Transfers power from differential to axle shafts
2097309085	DIFFERENTIAL AXLE	Connects differential to wheel hub assembly
5838300811	THRUST WASHER	Prevents metal-to-metal contact in gear sets
4482360001	DIFFERENTIAL BEVEL GEAR	Changes torque direction within differential housing

Frequently Asked Questions

Q: How do I confirm the ZF 2093.070.057 fits my transmission?
A: Check the transmission model plate located on the bell housing. This part is compatible with WG180, WG200, and WG211 series. Cross-reference your serial number with the OEM catalog to ensure correct fitment.

Q: Can I replace only the 2093.070.057 without changing the differential?
A: While possible, it is strongly recommended to inspect and replace the 2093109049 DIFFERENTIAL simultaneously, as uneven wear between these components accelerates failure.

Q: What torque specification is required for installation?
A: Tighten retaining bolts to 120 Nm (88.5 lb-ft) using a calibrated torque wrench. Always apply thread locker to prevent loosening under vibration.