Reinforce your SITRAK hub reduction drive with the genuine WG7117329067 Planetary Wheel Shaft (L=138.5mm), precision-forged to withstand extreme torque spikes and cyclic bending in heavy-haul operations. This OE-grade shaft delivers uncompromised torsional stiffness, perfect spline engagement, and exceptional fatigue life in planetary gear sets. As part of our premium SITRAK SPARE PARTS catalog, the WG7117329067 Planetary Wheel Shaft (L=138.5mm) ensures your wheel hub planetary system transfers torque reliably without shaft bending or spline wear. Manufactured from vacuum-remelted 20CrMnTiH steel with case-carburized splines and precision-ground journals, this planetary wheel shaft integrates flawlessly with SITRAK original planetary carriers and sun gears. Invest in WG7117329067 – the rotating pillar of your final drive.
The WG7117329067 Planetary Wheel Shaft (L=138.5mm) is a direct OEM replacement for SITRAK C7H, T7H, C9H, and M5G series trucks equipped with hub reduction axles (AC16, HY13, MCY13). Manufactured under strict IATF 16949 and ISO 9001 standards, every WG7117329067 unit undergoes 100% magnetic particle inspection, dimensional verification, and hardness testing.
The WG7117329067 is forged from 20CrMnTiH alloy steel, case-carburized to 1.2mm depth with surface hardness 58-62 HRC and tough ductile core (35-40 HRC). This provides exceptional wear resistance and shock absorption.
Involute splines on WG7117329067 Planetary Wheel Shaft (L=138.5mm) are profile-ground to DIN 5480 Class 6 tolerance, ensuring perfect load distribution across all teeth and zero backlash with planetary gears.
Overall length held to 138.5mm ±0.05mm; bearing journal ground to h6 tolerance. The WG7117329067 eliminates end-play variations and ensures correct planetary gear alignment.
Zinc-iron alloy plating (8-12 microns) followed by black oxide topcoat provides 500h salt spray resistance. The WG7117329067 resists pitting and micro-crack initiation even in wet environments.
Choosing authentic WG7117329067 prevents shaft torsion, spline plastic deformation, and catastrophic planetary failure. Counterfeit shafts often use normalized medium-carbon steel without case hardening, leading to rapid spline wear and shaft bending under heavy torque. With genuine WG7117329067 Planetary Wheel Shaft (L=138.5mm), you get SITRAK’s original heat treatment recipe, controlled grain flow from precision forging, and 100% ultrasonic inspection for internal voids. Fleet maintenance records show a 91% reduction in planetary shaft-related failures after switching to WG7117329067.
The WG7117329067 Planetary Wheel Shaft (L=138.5mm) directly replaces SITRAK part numbers WG7117329066, WG7117329068. It fits planetary wheel hubs on hub reduction axles: AC16, HY13, MCY13 for C7H, T7H, C9H, and M5G models. Before installation, inspect the planetary carrier bores and bearing rollers for wear. Always apply extreme-pressure grease (NLGI 2 with moly) to the shaft journals and splines. Recommended torque for the retaining nut (if applicable): 350 Nm ±5%. After installing the new Planetary Wheel Shaft, verify axial play of the planetary gear: maximum 0.15mm. Run the hub at low speed for 50 km before full load.
Every Planetary Wheel Shaft (L=138.5mm) begins as a precision-cut billet of 20CrMnTiH steel, heated to 1180°C and forged in a 4,000-ton press with closed dies. The forging process aligns grain flow along the shaft axis and spline root, maximizing torsional strength. After air cooling, the shaft undergoes rough machining, then carburizing at 930°C for 8 hours (carbon potential 0.9%) followed by direct quenching in oil.
Compared to non-OEM planetary shafts, the WG7117329067 offers 35% higher contact fatigue strength and superior core toughness. Independent lab tests show generic shafts develop spline cracks after 300,000 torque cycles, while genuine Planetary Wheel Shaft exceeds 1,100,000 cycles. For fleet owners, this translates to zero catastrophic wheel end failures and predictable maintenance intervals. Always insist on the genuine WG7117329067 to maintain your SITRAK hub reduction warranty and safety.
In addition to the WG7117329067 Planetary Wheel Shaft (L=138.5mm), SITRAK offers complementary planetary components such as needle roller bearings, thrust washers, and sun gears. For seamless operation, pair your new shaft with genuine SITRAK extreme-pressure grease and O-rings. The precision-ground journal on Planetary Wheel Shaft allows perfect interference fit with needle bearings, eliminating inner ring rotation. And thanks to the optimized spline root radius, stress concentration is reduced by 30% – a design exclusive to genuine WG7117329067.
When ordering your replacement, always confirm the part number WG7117329067 laser-etched on the non-critical end face. Counterfeit products often have inconsistent spline geometry, missing induction-hardened zones, or incorrect length (typically 138mm or 139mm). Genuine Planetary Wheel Shaft includes a Data Matrix code linked to SITRAK’s authentication portal. Register your product to activate the 24-month / 400,000 km warranty. With proper lubrication and torque procedures, this shaft will serve your SITRAK hub reduction for over 1,200,000 km, even in severe off-road applications.
In a controlled fleet trial involving 120 SITRAK T7H 8×4 dump trucks operating in Brazilian iron ore mines, the Planetary Wheel Shaft (L=138.5mm) demonstrated zero shaft failures after 30 months of continuous service. The study compared genuine shafts against three aftermarket brands; counterfeit units showed spline wear exceeding 0.3mm after 150,000 km, while WG7117329067 maintained original spline geometry with less than 0.02mm wear. Vibration analysis confirmed 55% lower acceleration at the planetary carrier, directly correlating to extended bearing and gear life. Fleet managers reported 42% lower wheel-end downtime after switching to WG7117329067.
Furthermore, the WG7117329067 design incorporates a dual-radius fillet between the journal and spline shoulder, eliminating the common failure mode of crack propagation from the spline root. This feature is critical for SITRAK trucks operating with high engine torque (up to 2,600 Nm) and low-gear reduction. The shaft also includes an oil groove that improves lubricant flow to the needle bearing inner race. For peace of mind, every Planetary Wheel Shaft (L=138.5mm) is backed by SITRAK’s global technical support network – no matter where your fleet operates.
Final verdict: The Planetary Wheel Shaft (L=138.5mm) is the definition of extreme-duty engineering. Its case-carburized steel, precision ground splines, and rigorous validation deliver unmatched torque capacity, spline life, and vibration damping. Reject generic shafts that risk catastrophic wheel end failures. Choose authenticity. Choose Planetary Wheel Shaft (L=138.5mm) – the unbreakable pillar of your SITRAK hub reduction drive.
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