W 625-2Z
W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
W 625-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0049 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
5 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
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
321 lbf
Radial static load rating
142 lbf
Limiting speed
50 X 1000 rpm
Lubrication
Grease
Radial internal clearance
CN
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.9
/ each
In Stock
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W 625-2Z Bearing Product Overview & Core Advantages
The W 625-2Z is a single row deep groove ball bearing designed for precision applications requiring reliable performance in compact spaces. Constructed entirely from stainless steel, it offers excellent corrosion resistance. A key feature is its shielded design (2Z) which retains factory-applied grease and protects against contaminant ingress, supporting a maintenance-free operation. This bearing is engineered to primarily handle radial loads and is characterized by its low friction and smooth operation, making it ideal for applications demanding high rotational accuracy and long service life.
W 625-2Z Bearing Model Code Explained, Specifications & Naming Convention
The model designation W 625-2Z can be broken down as follows:
- W: Indicates a series of miniature and instrument ball bearings.
- 625: Denotes the bearing size series. The '6' indicates a deep groove design, and '25' specifies the dimensional dimensions (5mm bore, 16mm OD).
- 2Z: Signifies that the bearing is fitted with non-contact shields on both sides. These shields protect the internal components from dust and other contaminants while minimizing friction.
W 625-2Z Bearing Structural Features & Performance Benefits
The performance of the W 625-2Z is a direct result of its robust construction:
- Full Complement Stainless Steel: The rings, balls, and cage are all manufactured from stainless steel, providing superior corrosion resistance and durability, suitable for harsh environments.
- Shielded for Protection: The ZZ shields effectively seal the bearing, retaining lubrication and excluding pollutants. This design contributes to a long, maintenance-free service life without the added torque of contact seals.
- Optimized for Radial Loads: The deep groove raceway and single row design are optimized to efficiently support radial dynamic loads up to 321 lbf, ensuring stable operation.
- Pre-Greased for Immediate Use: The bearing is pre-lubricated with grease, allowing for immediate installation and operation within its specified temperature range of -30°C to 120°C.
W 625-2Z Bearing Typical Application Areas
The compact size, corrosion resistance, and reliability of the W 625-2Z make it suitable for a wide range of precision applications, including:
- Small Electric Motors: Ideal for use in miniature DC motors, stepper motors, and fans.
- Precision Instruments: Used in medical devices, optical encoders, and measuring equipment.
- Office Automation Equipment: Found in printers, scanners, and copiers.
- Radio Control Models and Drones: Provides smooth and reliable rotation in small gearboxes and rotor assemblies.
