Manufactured by CHG Bearing, the MR126 is a precision Metric Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 6 mm bore diameter, a 12 mm outer diameter, and a 3 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
MR126 - Metric Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | MR126 |
| Dimensions | |
| Bore Diameter (d) | 6 mm |
| Width (B) | 3 mm |
| Outer Diameter (D) | 12 mm |
| Open Width B | 3 mm |
| Radius rs min | 0.15 mm |
| Flange Df | 13.2 mm |
| Closed Width B1 | 4 mm |
| Open Flange Width Bf | 0.6 mm |
| Closed Flange Width Bf1 | 0.8 mm |
| Performance | |
| Dynamic Load Cr (N) | 716 N |
| Static Load C0r (N) | 295 N |
| Grease Speed (x1000 rpm) | 43 x1000 rpm |
| Oil Speed (x1000 rpm) | 50 x1000 rpm |
| Design Configurations | |
| Open Model | - |
| Flanged Open Model | - |
| Shielded Model | MR126ZZ |
| Flanged Shielded Model | MF126ZZ |
| 2RS | 2RS |
| 2RU | 2RU |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | W, J, TW |
| Ball Qty. Z | 8 |
| Ball Size Dw | 1.588 mm |
| Shielded Weight (g) | 1.66 g |
| Flanged Shielded Weight (g) | 1.86 g |
| Open Weight (g) | 1.25 g |
| Flanged Open Weight (g) | 1.44 g |
MR126 12 mm 6 mm 3 mm Frequently Asked Questions about MR126 Metric Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The Open Type engineered for MR126 by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for MR126, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
In its sealed configuration (Open Type), CHG Bearing pre-charges MR126 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
To extend the trouble-free lifespan of CHG Bearing MR126, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
