SMR41xzz
SMR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMR41xzz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.14 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
1.2 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
4 mm
Outside diameter tolerance
-0.008mm to 0
Width
2.5 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.6 mm
Ball quantity
7
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
23 lbf
Radial static load rating
7 lbf
Limiting speed
105 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.002mm to 0.013mm
Radial internal clearance
MC3
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 16.17
/ each
In Stock
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SMR41xzz Bearing Product Overview & Core Advantages
The SMR41xzz is a miniature deep groove ball bearing designed for applications demanding compact size, reliable performance, and high precision. Constructed entirely from stainless steel, it offers excellent corrosion resistance. This single row bearing is optimized for radial loads and is characterized by its shielded design, which helps retain lubrication and exclude contaminants. Its small footprint, with a 1.2 mm bore and 4 mm outside diameter, makes it an ideal solution for high-precision, space-constrained mechanisms requiring dependable operation.
SMR41xzz Bearing Model Code Explained, Specifications & Naming Convention
The SMR41xzz model code provides key technical specifications:
- SMR: Manufacturer series prefix for miniature bearings.
- 41: Indicates a bore diameter of 1.2 mm.
- x: A placeholder for specific variants within the series.
- zz: Denotes that the bearing is shielded on both sides (2Z). This non-contact sealing method protects the internal components from contamination while minimizing friction, making it suitable for high-speed applications.
SMR41xzz Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to ABEC1 tolerance class, this bearing ensures smooth and precise rotation, contributing to the overall accuracy of the assembly.
- Optimized Load Capacity: The deep groove raceway and seven stainless steel balls are engineered to efficiently handle radial dynamic loads up to 23 lbf and static loads up to 7 lbf.
- Superior High-Speed Performance: The combination of a stainless steel cage, low-friction shields, and a limiting speed of 105,000 rpm allows for reliable operation in demanding high-velocity environments.
- Corrosion Resistance & Longevity: All components, including rings, balls, and cage, are made from stainless steel, providing excellent protection against rust and corrosion, which is critical for long-term reliability.
- Controlled Internal Clearance: Features a MC3 radial internal clearance (0.002mm to 0.013mm), which is suitable for most general applications and ensures stable performance across a range of operating conditions.
SMR41xzz Bearing Typical Application Areas
This miniature bearing is ideally suited for:
- Small Precision Motors (e.g., in drones, RC vehicles)
- Medical and Dental Instruments
- Office Automation Equipment (e.g., printers, scanners)
- Optical and Measuring Devices
- High-Speed Spindles in miniature machinery and tools
