R155 2rs
R Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
R155 2rs
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.51 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
0.15625"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.3125"
Outside diameter tolerance
-0.0003" to 0"
Width
0.125"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.03941"
Ball quantity
10
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
69 lbf
Radial static load rating
27 lbf
Limiting speed
53 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.00008" to 0.0005"
Radial internal clearance
MC3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Shield material
Nitrile Rubber
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.13
/ each
In Stock
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R155 2rs Bearing Product Overview & Core Advantages
The R155 2rs is a high-precision, single row deep groove ball bearing designed for reliable performance in compact spaces. Engineered with inch dimensions, it excels in applications requiring robust radial load capacity and consistent operation. A key feature is its integral rubber seal (2RS) on both sides, which effectively retains lubrication and excludes contaminants, making it suitable for environments where maintenance access is limited. Constructed from chrome steel for the rings and balls, and featuring a stainless steel cage, this bearing offers excellent durability and corrosion resistance, aligning with its ABEC1 precision class for smooth, reliable rotation.
R155 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| R155 | The basic bearing designation, indicating a specific inch-size series with a bore diameter of 0.15625" and an outside diameter of 0.3125". |
| 2RS | Signifies that the bearing is equipped with two rubber contact seals (one on each side). This provides superior protection against contamination and grease leakage compared to non-contact shields. |
R155 2rs Bearing Structural Features & Performance Benefits
- Robust Sealed Design: The dual Nitrile rubber (NBR) contact seals (2RS) create an effective barrier against dust, moisture, and other contaminants. This design significantly extends bearing service life by preserving the integrity of the internal lubrication, making it ideal for demanding environments.
- Optimized Internal Geometry: The deep groove raceway and complement of 10 precision balls enable the bearing to handle significant radial dynamic loads (69 lbf) and moderate axial loads in both directions.
- High-Speed Capability: The lightweight stainless steel cage ensures stable ball guidance and reduces centrifugal forces, contributing to a high limiting speed of 53,000 rpm. The optimized internal clearance (MC3 group) further supports smooth high-speed operation.
- Precision and Reliability: Manufactured to ABEC1 tolerance class, this bearing provides consistent running accuracy and low noise levels. The specified radial internal clearance ensures optimal performance under standard operating conditions.
R155 2rs Bearing Typical Application Areas
This versatile miniature ball bearing is commonly specified in:
- Small Precision Motors: Used in stepper motors, servo motors, and miniature DC motors where compact size and reliability are critical.
- Medical and Dental Equipment: Ideal for handheld tools, pumps, and scanners requiring smooth, quiet, and maintenance-free operation.
- Office Automation: Found in printers, scanners, and copiers for guiding rollers and drive mechanisms.
- Instrumentation and Control Systems: Suitable for encoders, sensors, and other precision devices that demand high rotational accuracy.
- Small Power Tools and Consumer Electronics: Provides durable support in fans, small gearboxes, and various handheld appliances.
