W 6303
W Series Stainless Steel Bearings
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Part No.
Part No.
W 6303
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.11 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.011mm to 0
Width
14 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
2630 lbf
Radial static load rating
1472 lbf
Limiting speed
22 X 1000 rpm
Lubrication
None
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
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W 6303 Bearing Product Overview & Core Advantages
The W 6303 is a metric single row deep groove ball bearing designed for high-performance applications requiring reliable radial load capacity. Manufactured entirely from stainless steel, it offers excellent corrosion resistance, making it suitable for harsh environments. Its open design allows for versatile lubrication options and facilitates high-speed operation. This bearing is characterized by its compact dimensions, precision P0 tolerance class, and compliance with RoHS and REACH standards, ensuring both high performance and environmental responsibility.
W 6303 Bearing Model Code Explained, Specifications & Naming Convention
The model designation W 6303 can be broken down as follows. Note that this is a standard, open-bearing designation without additional suffixes indicating seals or special features.
| Code Segment | Technical Meaning |
|---|---|
| W | Manufacturer's prefix or series identifier. |
| 63 | Indicates the bearing series, defining the cross-sectional dimensions and load capacity characteristics. |
| 03 | Bore diameter code. For metric bearings, this number multiplied by 5 gives the bore diameter in mm (03 * 5 = 15mm). The actual bore of 17mm is consistent with the 63 series standard. |
| (No Suffix) | The absence of suffixes like "2Z" or "RS" confirms the open seal type, meaning the bearing is supplied without shields or seals. |
W 6303 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and cage are made of stainless steel, providing superior corrosion resistance and enabling operation in a wide temperature range from -30°C to 120°C. This is critical for applications exposed to moisture, chemicals, or washdowns.
- High-Speed Capability: The open design and stainless steel cage minimize friction and allow for efficient lubrication management, supporting a high limiting speed of 22,000 rpm. This makes it an excellent choice for high-speed applications.
- Radial Load Capacity: As a single row deep groove ball bearing, it is primarily designed to support significant radial dynamic load ratings (2630 lbf) and radial static load ratings (1472 lbf). Its deep raceway geometry also allows it to accommodate moderate axial loads in both directions.
- Precision and Rigidity: Manufactured to P0 tolerance class with a standard CN radial internal clearance, this bearing ensures consistent performance, smooth operation, and precise shaft guidance, contributing to overall system high rigidity.
W 6303 Bearing Typical Application Areas
The W 6303 is ideally suited for a wide range of demanding applications across various industries, including:
- Food and Beverage Processing Equipment (due to stainless steel construction and corrosion resistance)
- Medical and Laboratory Devices
- Chemical Handling Pumps and Mixers
- High-Speed Electric Motors and Spindles
- Precision Instruments and Optical Equipment
