306SZZST
200, 300 & 6400 Series Industrial Single Row Deep Groove Ball Bearings
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Part No.
Part No.
306SZZST
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.37 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.013mm to 0
Width
19 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
6677 lbf
Radial static load rating
4856 lbf
Limiting speed
11 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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306SZZST Bearing Product Overview & Core Advantages
The 306SZZST is a single row deep groove ball bearing engineered for high-performance radial load applications. Featuring shielded construction and manufactured to ABEC 1 | ISO P0 precision standards, this bearing delivers reliable operation with a limiting speed of 11,000 rpm. Its chrome steel construction throughout (rings, balls, cage) ensures durability and consistent performance across a temperature range of -30°C to 120°C. The design offers a compact solution with a high radial dynamic load rating of 6677 lbf, making it ideal for applications demanding precision and reliability.
306SZZST Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ZZ | Double-Shielded (Both Sides) | Provides effective contamination protection while maintaining high-speed capability compared to contact seals. |
| ST | Standard Clearance (CN Group) | Offers optimal radial internal clearance for most general applications, ensuring smooth operation under normal conditions. |
306SZZST Bearing Structural Features & Performance Benefits
- Shielded Design: The double-shielded (ZZ) construction effectively retains lubrication and excludes contaminants, enhancing bearing service life without the added friction of contact seals.
- High Load Capacity: With a radial dynamic load rating of 6677 lbf and static rating of 4856 lbf, the bearing is built to handle significant radial loads in demanding environments.
- Optimized for Speed: The combination of a chrome steel cage, precision grinding, and shielded design enables a high limiting speed of 11,000 rpm.
- Precision & Consistency: Manufactured to ABEC 1 | ISO P0 tolerance class with controlled radial internal clearance (CN), ensuring reliable performance and interchangeability.
- Material Integrity: All critical components (rings, balls, cage) are made from chrome steel, providing high hardness, wear resistance, and dimensional stability.
306SZZST Bearing Typical Application Areas
- Electric Motors (especially small to medium-sized industrial motors)
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment (conveyors, rollers)
- Agricultural Machinery
- General Industrial Machinery requiring reliable, medium-precision ball bearings
