GQZ RNA6914 Needle Roller Bearing 80×100×54mm Without Inner Ring Double‑Row Heavy Radial Load Bearing
The RNA6914 double‑row needle roller bearing is designed without inner ring. The hardened shaft surface serves directly as raceway for needle rollers. Double‑row needle layout delivers high radial load capacity, compact radial cross‑section. Not suitable for high‑speed operation, fits low‑medium speed compact transmission where shaft can be quenched and ground.
It is widely used in gearboxes, printing machinery and engineering machinery compact shaft assemblies.
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- Model
- RNA6914
- Bore (shaft size)
- 80 mm
- Outer Diameter (OD)
- 100 mm
- Width
- 54 mm
- Structure
- Double‑row needle roller bearing, without inner ring
- Material
- GCr15 chrome bearing steel
- Cage
- Stamped steel cage
- r min
- 1.5 mm
- Precision Grade
- P0
- Approx Net Weight
- 0.94 kg
- Dynamic Load Cr
- 94200 N
- Static Load C0r
- 146500 N
- Limiting Speed(Grease)
- 2400 rpm
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- No‑inner‑ring design reduces overall radial dimension, saves installation space
- Double‑row needle rollers realize outstanding heavy radial load‑bearing performance
- Shaft journal must be hardened and precision‑ground to act as inner raceway
- Compact outer‑ring assembly for easy installation into housing bore
- Standard metric dimensions support direct interchange and aftermarket replacement
- Custom design available (sealed version, special grease, OEM laser marking)
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This needle roller bearing is widely used in:
- Compact industrial gearbox and reducer transmission units
- Printing machinery, textile equipment and material‑handling machinery
- Construction machinery auxiliary transmission and packaging production equipment
- Low‑speed heavy‑load mechanical devices with hardened‑ground shaft journal
???? Ideal for customers looking for reliable and long‑life bearing solutions
- 25+ years experience in industrial needle roller bearing manufacturing
- Exported to 50+ countries worldwide
- Rich experience in OEM RNA69 series needle roller bearing custom projects
- Strict dimensional tolerance, hardness and rotation performance inspection before shipment
- Fast response within 24 hours
- Stable supply for long‑term cooperation
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- Raw material hardness inspection
- Precision grinding outer raceway machining
- Heat treatment metallurgy control
- Radial‑clearance testing, needle roller flexibility and rotation smoothness inspection
- Final dimensional & appearance inspection before delivery
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Looking for a reliable bearing supplier?
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- Fast quotation within 24 hours
- Technical support from engineers
- Custom needle roller bearing matching solution suggestions
- Competitive factory price
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Q1: Difference between RNA6914 and NA6914?
RNA6914:without inner ring; NA6914:complete with inner ring.
Q2: What is your delivery time?
Standard needle roller bearings:7‑15 days
Custom special specifiion products: depending on specifiions
Q3: Do you support bulk orders?
Yes, we provide stable supply for long‑term cooperation.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.