RW168
RW Series Extended Inner Ring Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
RW168
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.6 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.25"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.375"
Outside diameter tolerance
-0.0003" to 0"
Width
0.125"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Extended
Inner ring width
0.1562"
Shoulder diameter inner ring
0.285"
Ball & Washer Dimensions
Ball diameter
0.0394"
Ball quantity
11
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
71 lbf
Radial static load rating
31 lbf
Limiting speed
48 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.00008" to 0.0005"
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:
$ 2.89
/ each
In Stock
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RW168 Bearing Product Overview & Core Advantages
The RW168 is a single row deep groove ball bearing manufactured to inch dimensions, designed for reliable performance in compact spaces. This precision bearing excels in applications requiring high-speed operation, with a limiting speed of 48,000 rpm. Its open design allows for versatile lubrication options, while the extended inner ring facilitates easier mounting and axial location. Constructed from high-grade chrome steel for the rings and balls, and a stainless steel cage, it offers a robust solution for handling significant radial loads with a dynamic load rating of 71 lbf.
RW168 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| RW168 | The base model number, defining the core bearing dimensions (0.25" bore, 0.375" OD, 0.125" width). |
| No Seal Suffix | Open construction, indicating no integral seals or shields. This allows for higher limiting speeds and custom lubrication schemes. |
| (Implied by Spec) | Extended Inner Ring. The inner ring width is greater than the standard width, providing a larger contact surface for secure mounting. |
RW168 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of an open design, a lightweight stainless steel cage, and 11 precision-ground balls minimizes friction and allows for a high limiting speed of 48,000 rpm, making it an excellent high-speed bearing.
- Radial Load Capacity: The deep groove raceway and robust construction are engineered to efficiently support the specified radial dynamic load of 71 lbf.
- Precision & Stability: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3: 0.00008" to 0.0005"), ensuring smooth and consistent operation.
- Material Durability: The use of chrome steel for rings and balls provides high hardness and wear resistance, contributing to a long service life.
- Versatile Lubrication: The open seal type requires lubrication but offers the flexibility to use greases or oils best suited for the specific application's temperature range (-86 to 230 °F).
RW168 Bearing Typical Application Areas
This bearing is ideally suited for a wide range of compact, high-speed machinery and precision instruments, including:
- Small electric motors and spindles
- Precision medical and dental handpieces
- Office automation equipment (e.g., scanners, printers)
- Instrumentation and control devices
- Robotic joints and actuators
