SMR117
SMR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMR117
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.59 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
7 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
11 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
9
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
78 lbf
Radial static load rating
33 lbf
Limiting speed
38.7 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:
$ 1.35
/ each
In Stock
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SMR117 Bearing Product Overview & Core Advantages
The SMR117 is a miniature single row deep groove ball bearing engineered for applications demanding compact design and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. As a radial bearing, it is primarily designed to support radial loads efficiently. Its key advantages include a very low weight of just 0.59 g, making it ideal for weight-sensitive assemblies, and a high limiting speed of 38,700 rpm, suitable for high-speed operation. The open design ensures low running torque and facilitates custom lubrication strategies.
SMR117 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Interpretation | Technical Significance |
|---|---|---|
| SMR | Series Prefix | Denotes a specific series of miniature stainless steel bearings. |
| 117 | Bore Size Code | Corresponds to a bore diameter of 7 mm. |
| (No Suffix) | Seal/Shield & Clearance | Indicates an open (unsealed) bearing with standard MC3 radial internal clearance. |
SMR117 Bearing Structural Features & Performance Benefits
- Compact and Lightweight Design: With dimensions of 7x11x2.5 mm and a weight of only 0.59 g, this bearing is perfect for space-constrained and weight-critical applications.
- Corrosion Resistance: The use of stainless steel for all components (rings, balls, cage) ensures reliable operation in humid or mildly corrosive environments.
- High-Speed Capability: The combination of a stainless steel cage, 9 precision balls of 1.2 mm diameter, and an open design allows for a high limiting speed of 38,700 rpm.
- Precision Performance: Manufactured to ABEC1 tolerance class with controlled radial internal clearance (MC3: 0.002mm to 0.013mm), ensuring smooth and consistent operation.
- Broad Operating Range: Capable of operating within a temperature range of -30°C to 110°C, offering versatility for various application conditions.
SMR117 Bearing Typical Application Areas
- Small Precision Motors (e.g., drone motors, miniature DC motors)
- Medical and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Control Devices
- Radio-Controlled Models and Hobbyist Projects
