R4A 2rs
R Series Miniature Bearings
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Part No.
Part No.
R4A 2rs
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
10 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
0.25"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.75"
Outside diameter tolerance
-0.0003" to 0"
Width
0.2812"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.1378"
Ball quantity
6
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
446 lbf
Radial static load rating
161 lbf
Limiting speed
36 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:
$ 0.93
/ each
In Stock
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R4A 2rs Bearing Product Overview & Core Advantages
The R4A 2RS is a high-performance sealed deep groove ball bearing designed for demanding industrial applications. Engineered with inch dimensions (0.25" bore), this single row bearing excels in handling significant radial loads while offering reliable operation. Its key advantages include robust construction with chrome steel rings and balls, and integral contact seals (2RS) that effectively exclude contaminants while retaining lubricant. This combination delivers a compact, durable, and long-lasting solution for applications requiring consistent performance and minimal maintenance.
R4A 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| R4A | Standard inch series bearing designation with specific dimensions. | Ensures interchangeability and easy sourcing. |
| 2RS | Bearing fitted with two Nitrile Rubber (NBR) contact seals, one on each side. | Provides excellent protection against dust, dirt, and moisture ingress, and retains lubricant for extended service life. |
R4A 2rs Bearing Structural Features & Performance Benefits
- Robust Load Capacity: The deep groove raceway and chrome steel construction enable high radial dynamic load rating of 446 lbf, making it suitable for applications with substantial radial forces.
- Sealed for Protection & Longevity: The dual NBR contact seals (2RS) create an effective barrier against contaminants. This design is crucial for maintaining performance in dirty or humid environments and contributes to the bearing's extended service life by keeping the lubricant clean and contained.
- Stainless Steel Cage: The use of a stainless steel cage ensures high strength and corrosion resistance, contributing to stable operation and reliability.
- Precision & Consistency: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3), this bearing offers reliable and predictable performance for a wide range of industrial uses.
R4A 2rs Bearing Typical Application Areas
This sealed, inch-sized ball bearing is ideal for various applications where reliability and contamination protection are key:
- Electric Motors and Small Gearboxes
- Conveyor System Idler Rolls
- Agricultural Machinery
- Industrial Fans and Blowers
- Material Handling Equipment
- Food Processing Machinery (where seals prevent contamination)
