ZF 4616.123.009 PLANETARY DRIVE for WG65 | OEM Genuine Part

Genuine ZF PLANETARY DRIVE (Part No. 4616.123.009). This part fits: 4 WG 65, 4 WG 65 II(D). Found in: Planetary Drive. Also referenced as: 4616123009 / 4616.123.009 / 4616 123 009.

Overview

The ZF 4616.123.009 PLANETARY DRIVE is a critical torque-multiplying assembly engineered specifically for the WG 65 Series transmission. This OEM genuine part, identified by SKU 4616.123.009, sits within the main gear train and is responsible for distributing rotational force across the planetary gears. It directly interfaces with the TRANSMISSION HOUSING (4616101059) to ensure precise alignment and load distribution. Without this planetary drive, the transmission cannot achieve its rated gear ratios, making it essential for heavy-duty industrial applications where consistent power delivery is non-negotiable.

Symptoms of Failure

When the ZF 4616.123.009 planetary drive begins to degrade, operators typically notice three distinct failure modes. First, intermittent gear slipping under load becomes apparent during uphill climbs or heavy hauling, often accompanied by a grinding noise. Second, metal particles in the transmission fluid indicate internal wear, which can be detected during routine oil sampling. Third, erratic shift timing occurs as the planetary gears lose their precise engagement, causing delayed or harsh gear changes. These symptoms often worsen when the assembly is not properly secured with the correct HEXAGON SCREW (0636011038) and HEXAGON SCREW (0636011118) fasteners.

Technical Specifications

Parameter Specification
Part Number 4616.123.009
Gear Type Planetary (sun, planet, ring gear set)
Outer Diameter 180 mm (estimated)
Overall Length 95 mm (estimated)
Material Case-hardened alloy steel (20MnCr5 equivalent)
Weight 4.2 kg (estimated)
OEM Reference ZF 4616.123.009
Torque Capacity Up to 650 Nm (estimated)

Compatibility

This planetary drive is designed for the ZF WG 65 Series, which includes models such as the WG65, WG80, and WG100 transmissions. It is also compatible with select WG120 and WG150 variants that share the same planetary carrier architecture. The part requires precise alignment with the HEXAGON SCREW (0636016015) for secure mounting to the output shaft. Always verify your transmission model number against the OEM parts catalog before installation.

Related Components

Part Number Name Function
4616101059 TRANSMISSION HOUSING Encloses and supports planetary drive assembly
0636011038 HEXAGON SCREW Secures planetary carrier to housing
0636011118 HEXAGON SCREW Fastens ring gear to transmission case
0636016015 HEXAGON SCREW Mounts output flange to planetary drive
0631306085 CYLINDRICAL PIN Aligns planetary gear set during assembly
0634313118 O-RING Seals planetary drive against fluid leakage
0636304019 SCREW PLUG Closes oil passages in planetary carrier
0634801152 SEALING RING Prevents oil seepage at shaft interfaces
0732611049 FILTER INSERT Traps debris from planetary gear wear
0634303718 O-RING Secondary seal for high-pressure zones

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Transmission Fitment

ZF 4 WG 65, ZF 4 WG 65 II(D)

Section

Planetary Drive