61903-2Z
618 & 619 Series Thin Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
61903-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.018 kg
Tolerance class
P6
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
30 mm
Outside diameter tolerance
-0.008mm to 0
Width
7 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
1039 lbf
Radial static load rating
573 lbf
Limiting speed
26 X 1000 rpm
Lubrication
Grease
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 10.73
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
61903-2Z Bearing Product Overview & Core Advantages
The 61903-2Z is a metric single row deep groove ball bearing featuring integral shields for comprehensive protection. Engineered for high-speed operation with a limiting speed of 26,000 rpm, this precision bearing delivers reliable performance in compact spaces with its 17 mm bore and 7 mm width. Its P6 tolerance class ensures superior running accuracy, making it ideal for applications demanding high rotational precision and consistent operation under radial loads.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 61903 | Standard series designation for a deep groove ball bearing with a 17mm bore. |
| 2Z | Indicates the bearing is shielded on both sides. This provides effective protection against contaminant ingress while minimizing friction. |
61903-2Z Bearing Structural Features & Performance Benefits
- Optimized for High Speeds: The combination of a stainless steel cage and factory-applied grease lubrication enables stable performance at the high limiting speed of 26,000 rpm, reducing wear and heat generation.
- Robust Load Capacity: Manufactured from chrome steel for both rings and balls, this bearing offers a dynamic load rating of 1039 lbf and a static load rating of 573 lbf, ensuring durability under significant radial loads.
- Maintenance-Free Operation: The 2Z shields effectively retain lubricant and exclude contaminants, providing long-term, maintenance-free service within the specified temperature range of -30°C to 120°C.
- Precision Engineering: Built to P6 tolerance and standard CN radial internal clearance, this bearing guarantees high running accuracy and low vibration for smooth operation.
61903-2Z Bearing Typical Application Areas
This bearing is widely used in applications requiring compact design, high speed, and reliability, including:
- Small Electric Motors (e.g., fans, blowers, power tools)
- Precision Instruments and medical devices
- Office Automation Equipment (e.g., printers, scanners)
- Automotive Auxiliary Units (e.g., idler pulleys, small pumps)
