‌Genuine Sinotruk HOWO A7 Planetary Axle Wheel Spacer WG2229100008 - OEM Heavy-Duty Hub Spacer Kit

‌Genuine Sinotruk HOWO A7 Planetary Axle Wheel Spacer (Part No. WG2229100008)‌

This OEM ‌wheel spacer‌ maintains precise alignment between the wheel hub and planetary gears on Sinotruk HOWO A7 drive axles. It prevents premature bearing wear, reduces lateral vibration, and ensures optimal torque transfer for heavy-load operations.

‌Technical Specifications‌:

• ‌Part Number‌: WG2229100008
• ‌Compatibility‌: Sinotruk HOWO A7 ST13/ST16 planetary drive axles (2016-Present)
• ‌Position‌: Inner wheel hub assembly
• ‌Material‌: Forged 4140 chromoly steel (QPQ nitride coated)
• ‌Thickness‌: 28.5mm ±0.05mm
• ‌Outer Diameter‌: 210.0mm
• ‌Inner Diameter‌: 152.4mm
• ‌Mounting Holes‌: 10x M14 bolt pattern (evenly spaced at 36°)
• ‌Surface Hardness‌: 58-60 HRC
• ‌Load Rating‌: 12,000 kg static / 8,500 kg dynamic
• ‌Operating Temp‌: -50°C to +150°C
• ‌Certifications‌: ISO 286-2, DIN 6885, Sinotruk OEM standards

‌Performance Advantages‌:
Vibration Control‌: Laser-balanced to <0.01g/mm unbalance
Corrosion Resistance‌: Triple-layer zinc-nickel plating (480h salt spray tested)
 ‌Precision Fit‌: CNC-machined to 0.01mm tolerance
 ‌Wear Protection‌: Micro-grooved oil retention surface

‌Why Genuine OEM?‌

• Extends wheel bearing life by 70,000 km
• 30% thicker than aftermarket spacers (prevents deformation under load)
• Perfect match for HG4 planetary gear set clearance
• Includes thermal expansion compensation design
• 3-year/300,000 km warranty

‌Critical Failure Prevention‌:
 Aftermarket spacers cause:

• Premature wheel bearing failure ($2,800 repair)
• Differential oil contamination
• Wheel vibration at highway speeds

‌Installation Requirements‌:

• Torque specification: 450Nm ±10% (use thread locker)
• Must replace with hub nut kit WG2229100011
• Requires bearing preload adjustment after installation