61904-2RZ
618 & 619 Series Thin Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
61904-2RZ
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.038 kg
Tolerance class
P6
Seal type
Sealed
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
20 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:
$ 16.33
/ each
In Stock
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61904-2RZ Bearing Product Overview & Core Advantages
The 61904-2RZ is a metric single row deep groove ball bearing designed for exceptional performance in compact spaces. As a sealed bearing pre-lubricated with grease, it offers reliable, maintenance-free operation and robust protection against contaminants. Its key advantages include high running accuracy due to its P6 tolerance class, the ability to handle significant radial loads, and suitability for applications demanding high rotational speeds. This bearing is engineered for applications requiring high reliability and long service life in demanding environments.
61904-2RZ Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Advantage |
|---|---|---|
| 61904 | Basic bearing series: 61900 series, single row deep groove ball bearing with a 20mm bore. | Standardized dimensions and load characteristics for easy selection and interchangeability. |
| -2RZ | Bearing is equipped with two non-contact RZ-type seals (one on each side). | Provides excellent protection against dust and moisture while maintaining low friction and high-speed capability. |
61904-2RZ Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to a P6 tolerance class, this bearing ensures precise running accuracy and smooth operation, which is critical for high-performance machinery. The deep groove raceway and robust construction provide high radial rigidity.
- Superior Sealing & Lubrication: The non-contact RZ seals on both sides effectively shield the internal components from contaminants. The bearing is pre-lubricated with high-quality grease, enabling maintenance-free operation throughout its service life under standard conditions.
- Optimized Speed Performance: The combination of a low-friction stainless steel cage, precision-ground chrome steel components, and effective sealing allows for a high limiting speed of 20,000 rpm.
- Robust Load Capacity: Engineered with high-grade chrome steel rings and balls, the bearing offers a high dynamic load rating of 1432 lbf and a static load rating of 821 lbf, ensuring durability under significant radial loads.
61904-2RZ Bearing Typical Application Areas
This bearing is ideally suited for a wide range of compact and high-speed applications, including:
- Electric Motors and small spindles
- Precision Instruments and medical devices
- Office automation equipment such as printers and scanners
- Small gearboxes and drives
- Cooling fans and pumps
