GQZ 7205CD/HC Hybrid Ceramic Single Row Angular Contact Ball Bearing 25×52×15mm 15° Contact Angle Open Type
7205CD/HC follows SKF super precision bearing standard specifiion.
- CD: 15° contact angle, high capacity D-design internal structure, universal matchable for duplex assembly
- HC: Hybrid construction, GCr15 steel rings + silicon nitride ceramic rolling elements, electrical insulation performance
Open type design allows convenient circulating oil lubriion. It bears combined radial load and one-way axial load. Single bearing can be combined as DB back-to-back, DF face-to-face or DT tandem sets to withstand bidirectional axial loads. Ceramic balls reduce centrifugal force at high speed, suppress electrical erosion and lower operating temperature. Widely adopted on high-speed CNC spindles, frequency conversion motors, ball screw supports and precision high-speed rotary equipment.
Formal quotation will be sent within 24 hours upon your inquiry.
- Model
- 7205CD/HC
- Dimensions
- d25 mm, D52 mm, B15 mm
- Min chamfer r
- 1 mm
- Net weight
- approx 0.132 kg
- Structure
- Single row angular contact ball bearing
- Contact angle
- 15°
- Material
- Inner/outer ring: GCr15 bearing steel; rolling element: Si₃N₄ ceramic balls; machined phenolic cage
- Structure type
- Open design, no seals
- Basic dynamic load Cr
- 13500 N
- Basic static load C0r
- 9700 N
- Limiting speed (oil lubriion)
- 38000 rpm
Complete dimension drawings and load data available on request.
- HC hybrid ceramic balls realize insulation effect, effectively eliminate electric pitting damage inside bearings
- 15° CD large capacity structure balances high-speed capability and load carrying performance
- Universal matchable design, flexible for DB/DF/DT paired installation on site
- Lower density ceramic balls reduce centrifugal load, achieve higher limiting speed than all-steel bearings
- Open structure supports continuous oil lubriion, suitable for long-time high-speed precision operation
- Customizable: P4/P5 precision grade, different preload classes, OEM laser marking, special high-speed grease
- High-speed vertical & horizontal machining center main spindles
- Frequency conversion servo motors and generator rotary shafts
- Precision ball screw support bearing assemblies
- High-speed grinding equipment and automation precision transmission units
- Rotary machinery vulnerable to stray current and electrical corrosion
- 25 years professional bearing manufacturer, products exported globally.
- Strict inspection for ceramic ball roundness and surface quality.
- Precision superfinishing for super precision grade requirements.
- 24-hour technical support for pairing arrangement and preload selection.
- Ample stock for machinery distributors.
- Precise dimensions and stable service performance.
- GCr15 ring quenching & tempering hardness inspection
- Silicon nitride ceramic ball dimensional sorting and surface defect testing
- Precision superfinishing for raceway surfaces
- Contact angle, internal clearance and rotational vibration testing
If you need 7205CD/HC hybrid ceramic angular contact bearings:
Send inquiry to obtain below supports:
- Quick quotation within 24 hours
- DB/DF matched set scheme consultation
- Precision grade and preload optional solutions
- Competitive factory direct price
Contact our sales team for full datasheets and formal offer.
- Q1: Suffix explanation
- CD = 15° contact angle high capacity D-design, universal matchable bearing;
- HC = hybrid bearing equipped with silicon nitride ceramic balls.
- Q2: Main dimensions of 7205CD/HC?
- 25×52×15 mm single row hybrid ceramic angular contact ball bearing.
- Q3: Core merit of hybrid ceramic bearing
- Prevent electric corrosion, reduce heat generation, improve maximum operating speed.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.