MR117
MR Series Miniature Bearings
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Part No.
Part No.
MR117
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
87 lbf
Radial static load rating
36 lbf
Limiting speed
43 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.002mm to 0.013mm
Radial internal clearance
MC3
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:
$ 1.13
/ each
In Stock
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MR117 Bearing Product Overview & Core Advantages
The MR117 is a metric miniature ball bearing designed for applications requiring compact size and reliable performance. As a single row deep groove ball bearing, it excels at handling radial loads and is engineered for high-speed operation. Manufactured to ABEC1 precision tolerances, this bearing offers a robust and cost-effective solution for a wide range of industrial and precision instruments. Its compact dimensions of 7mm bore, 11mm OD, and 2.5mm width make it ideal for space-constrained assemblies.
MR117 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MR117 | Standard model number for this specific bearing series and size. |
| Open (Seal Type) | The bearing is unsealed (Open), allowing for custom lubrication schemes but requiring a clean operating environment. |
| MC3 | Specifies the radial internal clearance group, optimized for general operating conditions. |
MR117 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage and optimized internal geometry enables a high limiting speed of 43,000 rpm, making it suitable for demanding high-speed applications.
- Radial Load Capacity: With a dynamic load rating of 87 lbf and a static load rating of 36 lbf, this bearing provides reliable support for substantial radial forces relative to its miniature size.
- Precision & Durability: Constructed from chrome steel rings and balls, the bearing ensures long service life and consistent performance. The ABEC1 tolerance class guarantees dimensional accuracy for smooth operation.
- Standard Internal Clearance: The MC3 radial clearance (0.002mm to 0.013mm) is suited for most common applications, ensuring optimal performance without excessive play or preload.
MR117 Bearing Typical Application Areas
This miniature bearing is ideally suited for:
- Small Precision Motors and stepper motors
- Medical and Dental Hand Tools
- High-Speed Spindles in small-scale CNC and engraving machines
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Guidance Systems
- Radio Control Models and Drones
