GQZ NA4824 Machined Needle Roller Bearing 120×150×30mm Complete With Precision Inner Ring For Heavy Load Reducers

NA4824 is single row machined ring needle roller bearing assembled with a matched precision inner ring, consisting of outer ring, needle rollers, steel cage and separable inner ring as a complete unit. It features compact radial cross-section, ultra-high radial load capacity and excellent structural rigidity. The integrated inner ring eliminates special quenching and grinding processing on mating shafts, simplifying mechanical design and assembly steps, widely used for heavy radial load transmission structures with limited installation space.

Get formal quotation within 24 hours after sending your inquiry.

Complete load parameters and CAD drawings available upon request.

1. Single row dense needle roller structure provides outstanding radial bearing capacity and rigidity for heavy load working conditions
2. Equipped with factory matched precision inner ring, no need for heat treatment and superfinishing on mating shaft surface
3. Outer ring with integrated lubrication groove ensures uniform grease distribution and convenient refueling maintenance
4. Compact wall thickness design saves radial installation space for miniaturized equipment layout
5. Tolerates slight axial displacement between shaft and housing during continuous operation
6. Standard metric dimensional specification, fully interchangeable with mainstream same-size needle roller bearings
7. Customizable options: double side rubber seals, high-temperature anti-oxidation grease, OEM laser marking, P6 / P5 precision grade Effectively reduce component wear, running vibration and long-term maintenance frequency of heavy machinery.

• Heavy-duty industrial gearboxes, speed reducers and transmission cases
• Hydraulic pumps, hydraulic cylinders and engineering valve components
• Construction machinery, agricultural machinery main rotating shafts
• Automation heavy-load conveying equipment and rotary fixtures
• Printing, textile and packaging large roller transmission assemblies
• General compact heavy radial load mechanical devices

• 25 years specialized manufacturer of machined needle roller bearings
• Products exported to more than 50 countries worldwide
• Strict full inspection of hardness, roundness, load capacity and rotational smoothness before delivery
• 24-hour professional technical support for bearing model matching and installation guidance
• Sufficient bulk stock for gearbox, hydraulic and engineering machinery distributors
• We supply stable quality, reliable heavy-load performance and long-term partnership support.

• GCr15 raw material metallurgy and hardness inspection
• Complete quenching & tempering heat stabilization treatment
• Precision superfinishing grinding for inner ring and outer ring raceways
• Needle roller size sorting and cage assembly tightness test
• Full dimensional tolerance, static & dynamic load performance inspection

If you need NA4824 complete inner ring needle roller bearings:

Send your inquiry to obtain:

• Fast formal quotation within 24 hours
• Professional clearance and lubricant matching suggestions
• Custom sealed structure and high-temperature lubrication solutions
• Competitive factory direct price Contact our sales team for full technical datasheets and formal offer.