SMR95
SMR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMR95
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.54 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
9 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
1.2 mm
Ball quantity
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
74 lbf
Radial static load rating
27 lbf
Limiting speed
45 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.002mm to 0.013mm
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:
$ 1.35
/ each
In Stock
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SMR95 Bearing Product Overview & Core Advantages
The SMR95 is a metric miniature deep groove ball bearing engineered for precision applications requiring compact dimensions and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. As a single row radial bearing, it is primarily designed to support radial loads efficiently. Its small footprint, with a 5mm bore and 9mm outside diameter, makes it ideal for space-constrained, high-precision assemblies where consistent operation and material integrity are paramount.
SMR95 Bearing Model Code Explained, Specifications & Naming Convention
The SMR95 model code indicates a standard, open-type miniature bearing. The specifications reveal key technical details not explicitly shown in the short code:
| Feature | Code/Specification | Technical Meaning & Advantage |
|---|---|---|
| Seal Type | Open | No integral seals, allowing for higher limiting speeds and minimal friction torque. Requires external sealing in contaminated environments. |
| Tolerance Class | ABEC1 | Defines standard precision levels for bore, outside diameter, and width, ensuring consistent bearing dimensions and reliable fit. |
| Internal Clearance | MC3 (0.002mm to 0.013mm) | Specifies a greater-than-normal radial internal clearance, beneficial for applications with significant thermal gradients or where interference fits are used. |
| Lubrication | Required | The bearing is supplied without grease, providing flexibility for the user to apply a specialist lubricant optimized for specific operational conditions (e.g., temperature, speed). |
SMR95 Bearing Structural Features & Performance Benefits
- Full Stainless Steel Construction: The rings, balls, and stainless steel cage provide superior corrosion resistance, making the bearing suitable for harsh environments, including those requiring wash-down or exposure to mild chemicals.
- Deep Groove Raceway: This geometry is optimized for handling radial loads and also accommodates moderate axial loads in both directions, offering versatile load-carrying capability for a single row ball bearing.
- High-Speed Capability: The open design and precision-ground components contribute to a high limiting speed of 45,000 rpm, essential for small, fast-rotating shafts.
- Precision Engineering: Manufactured to ABEC1 tolerances, this precision bearing ensures smooth, low-vibration operation, which is critical for the accuracy and longevity of sensitive equipment.
SMR95 Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in miniature DC motors and stepper motors used in robotics, drones, and optical drives.
- Medical and Dental Devices: Used in surgical handpieces, dental drills, and pump mechanisms where corrosion resistance, reliability, and compact bearing dimensions are critical.
- Instrumentation and Control Systems: Suitable for encoders, sensors, gauges, and other precision instruments requiring smooth, low-friction rotation.
- Office Automation Equipment: Commonly found in printers, scanners, and copiers for guiding and supporting small rollers and shafts.
