Manufactured by CHG Bearing, the MR148 is a precision Metric Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 8 mm bore diameter, a 14 mm outer diameter, and a 3.5 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.
MR148 - Metric Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | MR148 |
| Dimensions | |
| Bore Diameter (d) | 8 mm |
| Width (B) | 3.5 mm |
| Outer Diameter (D) | 14 mm |
| Open Width B | 3.5 mm |
| Radius rs min | 0.15 mm |
| Flange Df | 15.6 mm |
| Closed Width B1 | 4 mm |
| Open Flange Width Bf | 0.8 mm |
| Closed Flange Width Bf1 | 0.8 mm |
| Performance | |
| Dynamic Load Cr (N) | 817 N |
| Static Load C0r (N) | 386 N |
| Grease Speed (x1000 rpm) | 38 x1000 rpm |
| Oil Speed (x1000 rpm) | 45 x1000 rpm |
| Design Configurations | |
| Open Model | - |
| Flanged Open Model | - |
| Shielded Model | MR148ZZ |
| Flanged Shielded Model | MF148ZZ |
| 2RS | 2RS |
| 2RU | 2RU |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | J |
| Ball Qty. Z | 10 |
| Ball Size Dw | 1.588 mm |
| Shielded Weight (g) | 2.19 g |
| Flanged Shielded Weight (g) | 2.42 g |
| Open Weight (g) | 1.9 g |
| Flanged Open Weight (g) | 2.13 g |
MR148 14 mm 8 mm 3.5 mm Frequently Asked Questions about MR148 Metric Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Engineered according to international ISO boundary plans, CHG Bearing supplies MR148 with a precision bore diameter (d) of 8 mm, an outside diameter (D) of 14 mm, and a nominal ring width (B) of 3.5 mm. This configuration yields an effective cross-sectional wall thickness of 3.0 mm and an envelope ratio (D/d) of 1.75, delivering compact rigidity for OEM machinery housings.
To extend the trouble-free lifespan of CHG Bearing MR148, 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.
Yes, 100% of MR148 Metric Miniature Deep Groove Ball Bearings leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
Each MR148 produced in CHG Bearing manufacturing facilities features accurately profiled corner chamfers complying with DIN 5412 / ISO standard corner radii. When designing mating shafts and housing shoulders, machining an undercut or fillet radius strictly within the inner ring clearance limit (8 mm bore side) ensures perfect planar contact without edge binding.
