633zz
600 Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
633zz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
3.43 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
3 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
13 mm
Outside diameter tolerance
-0.008mm to 0
Width
5 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
7
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
249 lbf
Radial static load rating
88 lbf
Limiting speed
40 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.002mm to 0.013mm
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Shield material
300 Series Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.13
/ each
In Stock
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633zz Bearing Product Overview & Core Advantages
The 633zz is a metric single row deep groove ball bearing designed for high performance in compact spaces. This shielded bearing is engineered for radial load applications and offers reliable operation. Its key advantages include a compact design with a 3 mm bore, high-speed capability up to 40,000 rpm, and pre-lubrication for immediate use. Manufactured from chrome steel with a stainless steel cage and shield, it ensures durability and consistent performance, making it ideal for applications demanding precision and reliability.
633zz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix / Prefix | Technical Meaning |
|---|---|
| 63 | Series designation, indicating a specific dimension series for miniature and instrument bearings. |
| 3 | Bore diameter code, corresponding to a 3 mm bore. |
| zz | Indicates the bearing is equipped with non-contact metal shields (ZZ) on both sides. This provides effective protection against contamination while minimizing friction, contributing to the high limiting speed. |
633zz Bearing Structural Features & Performance Benefits
- Deep Groove Raceway & Single Row Design: The deep groove geometry enables efficient handling of radial loads and moderate axial loads in both directions, offering versatile load capacity.
- Shielded Construction: The double-sided stainless steel shields (ZZ) protect the internal components from dust and debris, enhancing bearing life and reliability in contaminated environments without significantly increasing torque.
- High-Speed Performance: The combination of a stainless steel cage, precision ABEC1 tolerances, and optimized internal geometry allows for a high limiting speed of 40,000 rpm.
- Precision & Rigidity: Manufactured to ABEC1 precision class with a controlled radial internal clearance (MC3 group), this bearing provides smooth, low-vibration operation essential for sensitive applications.
- Material Integrity: Components made from chrome steel (rings and balls) and stainless steel (cage and shields) ensure high strength, wear resistance, and good corrosion protection.
633zz Bearing Typical Application Areas
This miniature deep groove ball bearing is widely used in compact and high-speed machinery, including:
- Small Electric Motors (e.g., drones, RC models, cooling fans)
- Precision Instruments and optical devices
- Office Automation Equipment (printers, scanners, copiers)
- Medical Devices and dental handpieces
- Textile Machinery spindles and guides
