61904
618 & 619 Series Thin Section Bearings
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Part No.
Part No.
61904
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.037 kg
Tolerance class
P6
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
37 mm
Outside diameter tolerance
-0.009mm to 0
Width
9 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
1432 lbf
Radial static load rating
821 lbf
Limiting speed
26 X 1000 rpm
Lubrication
None
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:
$ 10.39
/ each
In Stock
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61904 Bearing Product Overview & Core Advantages
The 61904 is a single row deep groove ball bearing designed for exceptional performance in compact, high-precision applications. Engineered to primarily support radial loads, it features a P6 tolerance class for superior running accuracy and dimensional consistency. Its open design allows for versatile lubrication options, while the use of high-grade chrome steel for rings and balls ensures durability and reliable operation. This bearing is ideal for applications demanding high rotational speeds and precise motion control.
61904 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 61904 | Basic model number for a metric, single row deep groove ball bearing. |
| Open (Seal Type) | No integral seals or shields, allowing for high-speed operation and custom lubrication. |
| P6 (Tolerance Class) | Indicates tighter dimensional and running accuracy tolerances than standard (P0) bearings. |
| CN (Radial Internal Clearance) | Standard normal clearance group, suitable for most common operating conditions. |
61904 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The open design, combined with a lightweight stainless steel cage, minimizes friction and allows for a high limiting speed of 26,000 rpm, making it an excellent high-speed bearing.
- Precision & Rigidity: Manufactured to a P6 tolerance class, this bearing ensures precise shaft positioning and contributes to the overall high rigidity of the assembly.
- Robust Load Capacity: The optimized deep groove raceway and chrome steel construction provide a high dynamic load rating of 1432 lbf, enabling reliable support for significant radial loads.
- Versatile Application Range: With a temperature range of -30°C to 120°C and no pre-applied lubrication, it can be customized with greases or oils for specific environmental and performance requirements.
61904 Bearing Typical Application Areas
This precision bearing is widely used in applications requiring compact size, high speed, and accuracy, including:
- Electric Motor Spindles
- Precision Gearboxes
- Office Automation Equipment
- Medical and Dental Handpieces
- Small Fans and Pumps
