634zz
600 Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
634zz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
5.44 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
16 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
256 lbf
Radial static load rating
94 lbf
Limiting speed
36 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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634zz Bearing Product Overview & Core Advantages
The 634zz is a single row deep groove ball bearing designed for high-performance applications requiring reliable radial load capacity and smooth operation. Constructed from high-grade chrome steel with stainless steel shields and cage, it offers excellent durability and corrosion resistance. Its compact design and ABEC1 precision make it ideal for applications demanding consistent performance and long service life, particularly in environments where space is limited and reliability is critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 634 | Basic bearing series, indicating a metric deep groove ball bearing with specific dimensions (4mm bore, 16mm OD, 5mm width). |
| zz | Indicates the bearing is equipped with shielded seals on both sides. These non-contact shields protect against contamination from solid particles while minimizing friction, making them suitable for high-speed applications. |
634zz Bearing Structural Features & Performance Benefits
- Robust Construction: The single row deep groove raceway and chrome steel components provide high structural integrity and resistance to deformation under load.
- Optimized Load Handling: Engineered primarily for radial loads (dynamic rating: 256 lbf), it can also accommodate moderate axial loads in both directions, thanks to the deep groove geometry.
- High-Speed Capability: The combination of a stainless steel cage, precision ABEC1 tolerances, and low-friction shielded design enables a limiting speed of 36,000 rpm, suitable for demanding rotational applications.
- Enhanced Service Life: The MC3 radial internal clearance (0.002mm to 0.013mm) provides optimal preload and thermal expansion management, contributing to consistent performance and extended bearing life.
- Corrosion Resistance: The use of 300 series stainless steel shields and cage offers protection against rust and corrosion in various operating environments.
634zz Bearing Typical Application Areas
- Small Electric Motors: Ideal for spindle and rotor support in miniature DC motors, fans, and blowers.
- Precision Instruments: Used in optical devices, measuring equipment, and laboratory instruments requiring smooth, low-noise operation.
- Office Automation Equipment: Commonly found in printers, scanners, and copiers for paper feed rollers and drive mechanisms.
- Consumer Electronics: Suitable for small drives in computer cooling fans, hobbyist drones, and handheld power tools.
- Medical Devices: Applied in low-torque, high-speed components of dental handpieces and small pumps.
