NP211829 NP167935 Automobile Hub Bearing Unit Wheel Bearing For Heavy Duty Truck Trailer Axle

1. Product Overview

NP211829 and NP167935 are matched heavy-duty integrated wheel hub bearing assemblies specially designed for commercial heavy trucks, semi-trailers and large cargo vehicle axles. The two parts form a complete bearing set for trailer wheel hub installation, with optimized internal double row tapered roller layout to bear huge combined radial and axial load during full-load transportation.

All inner rings, outer rings and tapered rollers adopt high-purity fully quenched GCr15 bearing steel, ultra-precision superfinished raceway surface to reduce rolling friction and heat generation under long-distance continuous driving. Multi-layer composite double-sided oil-proof and dust-proof sealing structure can effectively block road mud, sand, rainwater and brake dust, avoid grease dilution and roller rust. Pre-filled high-temperature extreme pressure chassis lubricating grease inside the bearing, stable performance under high-speed, heavy-load and frequent braking conditions. Widely applied to heavy truck driving axles, semi-trailer support axles, large logistics transport vehicle wheel hub rotating positions.

2. Technical Specifications

Model Combination: NP211829 / NP167935
Structure: Double row tapered roller matched hub bearing set for heavy trailer axle
Raw material: GCr15 high carbon chromium bearing steel for all rolling components
Basic dynamic radial load Cr: 1860kN
Basic static radial load C0r: 3240kN
Limiting rotating speed(grease lubrication): 4200 r/min
Single complete set net weight: 12.8kg
Operating temperature range: -40℃ ~ 130℃
Matching axle type: Standard heavy-duty semi-trailer commercial vehicle axle
Complete trailer axle hub installation drawings, heavy load matching selection guide and long-cycle road vibration wear durability test reports can be provided upon customer request.

3. Core Advantages

• Matched NP211829 & NP167935 complete bearing set, precisely dimensional tolerance matching, no clearance adjustment trouble during vehicle assembly, greatly improve production efficiency.
• Double row tapered roller internal structure, excellent composite radial and axial bearing capacity, stable operation under full load climbing, braking and sharp turning heavy impact.
• Multi-layer composite labyrinth composite sealing system, resist mud, gravel, rainwater erosion on complex road conditions, extend service cycle of logistics transport vehicles.
• High purity bearing steel integral forging and overall quenching, hardness up to HRC60–65, strong anti-indentation and anti-fatigue performance, reduce vehicle breakdown risk on long haul.
• Pre-filled high-temperature anti-shear extreme pressure grease, slow grease loss under continuous high-speed driving, adapt long-distance uninterrupted transportation work mode.
• Optimized roller curvature and raceway geometric design, lower heat generation during rotation, effectively prevent bearing ablation caused by overheating of heavy-load axles.
• Standard unified installation dimension, fully interchangeable with global NP series trailer axle wheel bearing combinations, direct replacement without modifying hub and axle housing.
• Comprehensive customized service: P6 high precision upgrade, OEM laser marking on outer ring surface, neutral export wooden case anti-rust packaging, high temperature anti-wear chassis grease pre-filling.

4. Application Scenarios

NP211829/NP167935 heavy-duty matched tapered roller wheel hub bearing set is core heavy-load rotating spare part for commercial transport vehicles:

• Logistics semi-trailer, container truck main axle wheel hub bearing assemblies
• Heavy cargo dump truck, mine transport vehicle driving axle matching units
• Large refrigerated transport truck, bulk grain carrier wheel support rotating positions
• Engineering heavy trailer, low-bed transport vehicle heavy load axle components
• Agricultural large transport trailer, highway long-distance freight truck hub bearings

Aftermarket interchangeable NP series heavy-duty trailer axle matched wheel hub bearing set
Cost-effective anti-impact long-life truck wheel bearing solution for trailer axle manufacturers, commercial vehicle OEM and auto repair maintenance factories bulk procurement.

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience of NP series heavy-duty matched truck hub bearing sets including NP211829/NP167935
• NP211829/NP167935 fully dimensionally interchangeable with international standard heavy trailer axle bearing combinations, consistent heavy load rating, sealing anti-mud performance and assembly tolerance standards.
• Complete OEM & ODM customization service supporting P6 precision grade and high-temperature chassis extreme pressure grease filling.
• Strict full pre-delivery inspection flow: GCr15 raw material metallographic & hardness test, tapered roller dimensional sorting screening, long-cycle road vibration heavy load aging test, repeated mud splash sealing fatigue wear simulation test.
• Professional auto hub bearing engineering team provides one-on-one radial-axial composite load calculation, trailer axle matching selection and hub press-fit installation technical guidance within 24 working hours.
• Stable large-scale mass production workshop with competitive factory direct bulk wholesale price for large-volume complete set orders, long-term stable supply for global commercial vehicle and trailer axle spare parts buyers.

We specialize in double row tapered roller heavy-duty hub bearing matched set structure, multi-layer labyrinth anti-mud sealing design, universal metric interchangeable axle mounting dimension standard and long-term win-win cooperation with commercial transport vehicle chassis equipment suppliers.

6. Quality Control

• Raw material chemical composition, internal flaw and hardness inspection for GCr15 bearing steel inner ring, outer ring and tapered roller blanks
• Bearing ring precision integral forging, multiple tempering stress relief, multi-step ultra-precision tapered raceway grinding process
• Tapered roller high-temperature quenching, mirror polishing and high-precision automatic dimensional sorting production line
• Multi-layer composite seal press fitting assembly process, strictly control sealing labyrinth gap and anti-drop performance
• Targeted classified performance testing: NP211829/NP167935 long-cycle heavy load vibration rotation aging test, repeated mud and rain splash sealing durability test, continuous high-speed high-temperature anti-ablation wear detection
• Full dimensional tolerance, surface crack and sealing tightness recheck before anti-rust oil coating and export wooden case moisture-proof packaging shipment

Every production batch of NP211829/NP167935 bearing sets undergoes full sampling semi-trailer axle road condition simulation rotation test to guarantee stable long-term heavy-load anti-mud durable rotating support performance in long-distance logistics transport vehicles.

7. Get A Quote Now

If you need NP211829/NP167935 matched heavy-duty trailer axle wheel hub bearing sets for semi-trailer axle manufacturing, commercial vehicle assembly and truck repair maintenance bulk matching, send your purchase inquiry directly.

You will receive full professional supporting services after submitting inquiry:

• Fast official factory sealed formal quotation reply within 24 working hours
• One-on-one radial-axial composite load calculation, trailer axle model matching and hub press-fit installation technical guidance from professional auto hub bearing engineers
• Customized bearing performance solutions including P6 high precision upgrade and high-temperature extreme pressure chassis grease options
• Competitive direct factory bulk wholesale price for large-volume NP211829/NP167935 complete set orders

Provide your required purchase quantity, vehicle full load weight and complex mud road working environment to obtain detailed formal quotation document.