Overview
The ZF 5838.300.111 SPUR GEAR is a precision-machined component engineered for the auxiliary drive and power take-off (PTO) circuits within the WG100, WG130, and WG131 transmission families. This OEM genuine part transmits rotational torque from the input shaft to the differential assembly, ensuring synchronized gear engagement under heavy load. The SKU 5838.300.111 is manufactured to ZF’s original metallurgical specifications, providing exact tooth geometry for minimal backlash. When paired with a DIFFERENTIAL (5838109006), this spur gear maintains consistent power flow to the output shafts, reducing vibration and thermal stress on adjacent bearings.
Symptoms of Failure
- Whining or howling noise during deceleration: Worn tooth flanks on the 5838.300.111 create uneven contact patterns, producing a high-pitched metallic whine that intensifies as the vehicle slows.
- Intermittent PTO engagement failure: Chipped or pitted gear teeth prevent the spur gear from meshing cleanly with the DIFFERENTIAL (2095209037), causing the power take-off to slip or refuse engagement under load.
- Metal debris in transmission oil: Surface fatigue fractures release microscopic steel particles into the lubricant, often visible during oil changes as glitter-like contamination.
- Vibration at specific RPM ranges: A worn spur gear induces harmonic resonance through the DIFF.HOUSING (2095309059), felt as a rhythmic shudder between 1,200 and 1,800 RPM.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5838.300.111 |
| Material | Case-hardened 20MnCr5 alloy steel |
| Tooth Count | 23 teeth (estimated) |
| Module | 4.5 mm |
| Outside Diameter | 112.5 mm |
| Bore Diameter | 35 mm |
| Face Width | 28 mm |
| Weight | 0.85 kg |
| OEM Reference | ZF 5838.300.111 |
| Hardness | 58-62 HRC |
Compatibility
This spur gear is directly compatible with ZF WG100, WG130, and WG131 series transmissions. It also fits select WG180 and WG200 variants where the auxiliary drive gear train shares the same 23-tooth configuration. The gear interfaces with the TAPER ROLLER BEARING (0750117075) on the countershaft and requires proper shimming via the THRUST WASHER (0730300820) to maintain axial clearance. Always verify the transmission serial number against ZF’s parts catalog before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109006 | DIFFERENTIAL | Distributes torque between output shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on gear shaft |
| 2095209037 | DIFFERENTIAL | Secondary differential for multi-axle drives |
| 2095309059 | DIFF.HOUSING | Encloses differential gear set |
| 0631329086 | SPRING PIN | Secures gear to shaft via cross-hole |
| 0730300820 | THRUST WASHER | Controls axial play between gears |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel axles |
| 2095309081 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Prevents gear-to-housing contact |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear |
ZF 5838.300.111 SPUR GEAR – Gear RFQ Support
PartsZF helps B2B buyers source ZF 5838.300.111 SPUR GEAR with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This gear page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 5838.300.111 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: TRAVEL POWER TAKE OFF SHAFT
- Illustration section: JOURNAL SHAFT
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 5838.300.111 |
|---|---|
| Normalized SKU | 5838300111 |
| Part name | SPUR GEAR |
| Product category | gear |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
Related Parts
- ZF 4646.302.128 HELICAL GEAR
- ZF 4143.316.088 PINION
- ZF 4657.302.007 INPUT GEAR
- ZF 4657.354.044 OUTPUT GEAR
- ZF 4644.306.326 GEAR SHIFT HOUSING
