MR126
MR Series Miniature Bearings
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Part No.
Part No.
MR126
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.25 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
6 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
12 mm
Outside diameter tolerance
-0.008mm to 0
Width
3 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
1.588 mm
Ball quantity
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
137 lbf
Radial static load rating
53 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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MR126 Bearing Product Overview & Core Advantages
The MR126 is a metric single row deep groove ball bearing engineered for exceptional performance in compact spaces. Designed primarily for radial load applications, this bearing offers a robust and reliable solution for high-speed machinery. Its open design allows for versatile lubrication options, while the stainless steel cage ensures stable operation. With a limiting speed of 43,000 rpm and manufactured to ABEC1 precision tolerances, the MR126 is ideal for applications demanding high rotational accuracy and reliability in a minimal footprint.
MR126 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MR126 | Basic bearing designation, indicating a metric, single row deep groove ball bearing with a 6mm bore, 12mm OD, and 3mm width. |
| Open (Seal Type) | No integral seals or shields. This allows for higher limiting speeds and custom lubrication schemes but requires a clean operating environment or external sealing. |
| MC3 (Clearance) | Specifies a Radial Internal Clearance group of 0.002mm to 0.013mm, suitable for most general applications with normal operating conditions. |
| ABEC1 | The tolerance class, defining the precision of the bearing's dimensional and running accuracy. |
MR126 Bearing Structural Features & Performance Benefits
- Optimized for High Speeds: The stainless steel cage provides excellent strength and corrosion resistance, contributing to stable operation and a high limiting speed of 43,000 rpm.
- Radial Load Capacity: The deep groove raceway and chrome steel construction are engineered to handle significant radial dynamic (137 lbf) and static loads (53 lbf) efficiently.
- Precision Engineering: Manufactured to ABEC1 tolerances with tight dimensional controls (bore/OD tolerance: -0.008mm to 0), ensuring smooth running and reduced vibration for precision applications.
- Versatile Application Range: The open design and standard temperature range (-30° to 110 °C) offer flexibility in lubrication and operating environments, though external sealing is recommended for contaminated conditions.
MR126 Bearing Typical Application Areas
- Small Electric Motors and Precision Spindles
- Office Automation Equipment (Printers, Scanners)
- Medical and Dental Handpieces
- Instrumentation and Precision Mechanisms
- Robotics and Small Gearboxes
