Manufactured by CHG Bearing, the MR63 is a precision Metric Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 3 mm bore diameter, a 6 mm outer diameter, and a 2 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.
MR63 - Metric Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | MR63 |
| Dimensions | |
| Bore Diameter (d) | 3 mm |
| Width (B) | 2 mm |
| Outer Diameter (D) | 6 mm |
| Open Width B | 2 mm |
| Radius rs min | 0.1 mm |
| Flange Df | 7.2 mm |
| Closed Width B1 | 2.5 mm |
| Open Flange Width Bf | 0.6 mm |
| Closed Flange Width Bf1 | 0.6 mm |
| Performance | |
| Dynamic Load Cr (N) | 209 N |
| Static Load C0r (N) | 74 N |
| Grease Speed (x1000 rpm) | 71 x1000 rpm |
| Oil Speed (x1000 rpm) | 80 x1000 rpm |
| Design Configurations | |
| Open Model | MR63 |
| Flanged Open Model | MF63 |
| Shielded Model | MR63ZZ |
| Flanged Shielded Model | MF63ZZ |
| 2RS | - |
| 2RU | - |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | W |
| Ball Qty. Z | 8 |
| Ball Size Dw | 0.8 mm |
| Shielded Weight (g) | 0.28 g |
| Flanged Shielded Weight (g) | 0.34 g |
| Open Weight (g) | 0.2 g |
| Flanged Open Weight (g) | 0.26 g |
MR63 6 mm 3 mm 2 mm Frequently Asked Questions about MR63 Metric Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting MR63 over a 3 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
Built for demanding industrial environments, the MR63 Metric Miniature Deep Groove Ball Bearings by CHG Bearing boasts a dynamic load rating (Cr) of standard dynamic and a static load threshold (C0r) of standard static. The optimized internal raceway geometry balances stress distribution, mitigating edge loading even when operating under peak mechanical stresses.
To safeguard CHG Bearing MR63 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (3 mm x 6 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Absolutely. The CHG Bearing MR63 Metric Miniature Deep Groove Ball Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF MR63, FAG MR63, NSK MR63. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
