GQZ 3306 BD.XL.2ZC3 Double Row Angular Contact Ball Bearing 30×72×30.2mm 30° Contact Angle Double Metal Shield C3 Clearance
3306 BD.XL.2ZC3 is double row angular contact ball bearing (FAG standard designation: 3306-BD-XL-2Z-C3).
- BD: Optimized internal geometry, 30° contact angle, no filling notch
- XL: X-life upgraded design, higher load rating and extended service life
- 2Z: Double-sided non-contact metal dust shields
- C3: Increased internal radial clearance
Built-in back-to-back raceway layout, capable of supporting combined radial load and bidirectional axial load simultaneously. Compact structure replaces paired single row angular contact bearings and saves axial installation space. Double metal shields prevent dry dust ingress and retain internal grease. Widely used on industrial gearboxes, centrifugal fans, pump shafts, textile machinery, agricultural equipment and medium-high speed rotary assemblies.
Formal quotation will be sent within 24 hours upon your inquiry.
| Parameter | Value |
|---|---|
| Model | 3306 BD.XL.2ZC3 |
| Dimensions | d30 mm, D72 mm, B30.2 mm |
| Net weight | approx 0.55 kg |
| Structure | Double row angular contact ball bearing |
| Contact angle | 30° |
| Material | GCr15 bearing steel; glass fiber reinforced polyamide cage (TVH standard) |
| Sealing | 2Z double-sided non-contact stamped steel shield |
| Clearance class | C3 (larger than normal group) |
| Basic dynamic load Cr | 43000 N |
| Basic static load C0r | 29500 N |
Complete dimension drawings and load data available on request.
- 30° large contact angle provides powerful bidirectional axial bearing capacity
- XL X-life optimized internal design improves fatigue resistance and service life
- Integral double row structure saves space vs two single row matched bearings
- 2Z non-contact metal shields suit medium-high speed dry & slightly dusty environments
- C3 enlarged clearance adapts to operating temperature rise and thermal expansion
- Standard ISO metric dimension for direct aftermarket interchange
- Customizable: OEM laser marking, high-temperature grease, P5/P6 precision grade
- Medium-duty industrial gearboxes and reduction drive assemblies
- Centrifugal fans, blowers and water pump main shafts
- Textile machinery, printing and packaging rotary equipment
- Agricultural machinery and light construction transmission units
- Medium-high speed rotary equipment subjected to alternating axial forces
25 years professional bearing manufacturer, products exported globally.
Strict raw material inspection and precision superfinishing process.
Strict clearance classifiion control for C3 specifiion consistency.
24-hour technical support for suffix & model cross reference.
Ample stock for machinery distributors.
Precise dimensions and stable service performance.
GCr15 raw material quenching & tempering treatment
Precision superfinishing for raceways and steel balls
Internal clearance grouping & contact angle inspection
Dimension tolerance and rotational vibration testing
If you need 3306 BD.XL.2ZC3 double row angular contact ball bearings:
Send inquiry to obtain below supports:
- Quick quotation within 24 hours
- Open type / 2RS rubber sealed alternative consultation
- Competitive factory direct price
Contact our sales team for full datasheets and formal offer.
- Q1: Suffix full explanation
- BD = 30° contact angle, improved internal design without filling slot;
- XL = X-life long-life upgraded version;
- 2Z = double-sided non-contact metal dust shield;
- C3 = increased internal clearance.
- Q2: Main dimensions of 3306 BD.XL.2ZC3?
- 30×72×30.2 mm double row angular contact ball bearing.
- Q3: 2Z vs 2RS difference
- 2Z metal shield: lower friction, suitable for high speed, only dust-proof;
- 2RS rubber seal: better moisture & splash protection, limited maximum speed.
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