GQZ 7206CD/HC Hybrid Ceramic Angular Contact Ball Bearing 30×62×16mm Silicon Nitride Balls High‑Speed Spindle Bearing
The 7206CD/HC hybrid ceramic angular contact ball bearing adopts GCr15 steel inner‑outer rings and silicon nitride ceramic rolling balls, with 15‑degree CD contact angle and open‑type construction. Ceramic balls feature low density, small friction coefficient, effectively lower centrifugal force and heat buildup under high‑speed running conditions.
It is widely applied in high‑speed machine tool spindles, high‑frequency motors and precision automation rotary platforms.
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- Model:
- 7206CD/HC
- Inner Diameter (ID):
- 30 mm
- Outer Diameter (OD):
- 62 mm
- Width:
- 16 mm
- Contact Angle:
- 15°
- Structure:
- Open‑type angular contact ball bearing, hybrid Si₃N₄ ceramic balls, steel raceways
- Material:
- GCr15 steel rings, silicon nitride ceramic balls
- Cage:
- Polyamide resin cage
- Clearance:
- Standard CN clearance
- Precision Grade:
- P0, P4 optional
- Approx Net Weight:
- 0.175 kg
- Dynamic Load Cr:
- 19200 N
- Static Load C0r:
- 12400 N
- Limiting Speed(Grease):
- 12600 rpm
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- Low‑weight silicon nitride ceramic balls reduce centrifugal force to realize excellent high‑speed performance
- Low friction characteristic cuts heat generation, improves stability for continuous high‑speed operation
- 15° CD contact angle balances radial load capacity and high‑speed rotation performance
- Ceramic rolling elements deliver outstanding anti‑seizure and wear‑resistant properties
- Open‑type design supports various sealing forms and DB/DF duplex pairing assembly
- Custom design available (P4 precision grade, special grease, OEM laser marking)
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This bearing is widely used in:
- High‑speed machine tool spindles, grinding spindles and high‑frequency motor assemblies
- Precision testing instruments and automated precision rotary platform components
- High‑speed textile spindles, robotic joint parts and medical processing equipment
- Multiple high‑speed rotary devices requiring low heat generation and extended service life
???? Ideal for customers looking for reliable and long‑life bearing solutions
- 25+ years experience in industrial bearing manufacturing
- Exported to 50+ countries worldwide
- Rich experience in OEM hybrid ceramic angular contact bearing custom projects
- Strict ceramic ball screening, run‑out and high‑speed simulation inspection before shipment
- Fast response within 24 hours
- Stable supply for long‑term cooperation
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- Raw material hardness inspection
- Precision grinding & superfinishing raceway machining
- Heat treatment metallurgy control
- Ceramic ball appearance screening, rotation runout and noise testing
- 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 hybrid ceramic bearing matching solution suggestions
- Competitive factory price
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Yes, back‑to‑back DB and face‑to‑face DF pre‑matched bearing sets are available.
Standard hybrid ceramic bearings: 10‑18 days
Custom high‑precision specifiion products: depending on specifiions
Yes, we provide stable supply for long‑term cooperation.
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