W 61902-2RS1/VT378
W Series Stainless Steel Bearings
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Part No.
Part No.
W 61902-2RS1/VT378
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.015 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
28 mm
Outside diameter tolerance
-0.009mm to 0
Width
7 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
834 lbf
Radial static load rating
504 lbf
Limiting speed
34 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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W 61902-2RS1/VT378 Bearing Product Overview & Core Advantages
The W 61902-2RS1/VT378 is a single row deep groove ball bearing engineered for high reliability in demanding applications. Constructed entirely from stainless steel (rings and balls), it offers excellent corrosion resistance. Its key advantages include the ability to handle significant radial loads and moderate axial loads in both directions. The bearing is sealed and pre-lubricated for long-term, maintenance-free operation, making it ideal for applications requiring durability and consistent performance within a broad temperature range.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W 61902 | Basic bearing designation: Stainless steel, single row deep groove ball bearing with a 15 mm bore. |
| 2RS1 | Sealing: Features contact seals on both sides, providing effective protection against contaminants and retaining lubricant. |
| VT378 | Lubrication: Pre-filled with a specific, high-quality grease suitable for the stated temperature range. |
W 61902-2RS1/VT378 Bearing Structural Features & Performance Benefits
- Corrosion Resistance: Manufactured from stainless steel for the rings and balls, this bearing is highly resistant to rust and corrosion, ensuring longevity in harsh environments.
- Sealed & Lubricated for Life: The 2RS1 contact seals effectively shield the internal components from dust, moisture, and other contaminants while retaining the factory-applied grease. This design enables maintenance-free operation throughout the bearing's service life.
- High-Speed Capability: With a limiting speed of 34,000 rpm, it is well-suited for applications requiring high rotational velocities.
- Precision & Load Capacity: Built to ABEC 1 (ISO P0) tolerance standards, it ensures smooth and quiet operation. The design provides a high dynamic load rating for its compact bearing dimensions (15x28x7 mm).
W 61902-2RS1/VT378 Bearing Typical Application Areas
This versatile and robust bearing is commonly specified in:
- Food and Beverage Processing Equipment
- Medical and Dental Devices
- Chemical Handling Pumps and Mixers
- Electrical Motors and Small Gearboxes
- Precision Instruments and Office Machinery
