GQZ NA4824 Machined Needle Roller Bearing 120×150×30mm Complete With Precision Inner Ring For Heavy Load Reducers
Price:
3.1-30$
MOQ:
100.PCS
Delivery Time:
5 working days
Brand:
GQZ
Product Description
1. Product Overview
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.
2. Technical Specifiions
| Model | NA4824 |
| Dimensions | Inner bore d120 mm, Outer D150 mm, Width B30 mm |
| Fw | 130 mm |
| Net weight | 0.94 kg |
| Dynamic load rating Cr | 108 kN |
| Static load rating Cor | 202 kN |
| Limiting speed | Grease lubriion 4300 rpm, Oil lubriion 5300 rpm |
| Structure | Single row needle rollers, complete with machined inner ring, oil groove on outer ring |
| Cage | Cold stamped steel cage |
| Material | GCr15 chrome bearing steel |
| Standard clearance | C0 normal clearance; C3 enlarged clearance optional |
| Separate inner ring part number | IR120×130×30 |
Complete load parameters and CAD drawings available upon request.
3. Core Advantages
- Single row dense needle roller structure provides outstanding radial bearing capacity and rigidity for heavy load working conditions
- Equipped with factory matched precision inner ring, no need for heat treatment and superfinishing on mating shaft surface
- Outer ring with integrated lubriion groove ensures uniform grease distribution and convenient refueling maintenance
- Compact wall thickness design saves radial installation space for miniaturized equipment layout
- Tolerates slight axial displacement between shaft and housing during continuous operation
- Standard metric dimensional specifiion, fully interchangeable with mainstream same-size needle roller bearings
- 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.
4. Appliion Scenarios
- 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
5. Why Choose GQZ Bearing
- 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.
6. Quality Control Process
- 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
7. Request Quotation
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 lubriion solutions
- Competitive factory direct price Contact our sales team for full technical datasheets and formal offer.
8. FAQ
Q1: What does NA stand for?
NA series needle roller bearing comes with matched inner ring; RNA series has no inner ring.
Q2: Exact dimension and separate inner ring model?
120×150×30mm, independent inner ring model: IR120×130×30.
Q3: What is the difference between NA and RNA bearings?
NA includes inner ring, can be mounted directly on ordinary shaft; RNA requires hardened ground shaft surface as raceway.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Wuxi Guangqiang Bearing Trade Co.,Ltd
Location
No. 650 North Xingyuan Road, Beitang District, Wuxi, China.
Contact Person
Mike Zhang