Manufactured by CHG Bearing, the MR84 is a precision Metric Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 4 mm bore diameter, a 8 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.
MR84 - Metric Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | MR84 |
| Dimensions | |
| Bore Diameter (d) | 4 mm |
| Width (B) | 2 mm |
| Outer Diameter (D) | 8 mm |
| Open Width B | 2 mm |
| Radius rs min | 0.1 mm |
| Flange Df | 9.2 mm |
| Closed Width B1 | 3 mm |
| Open Flange Width Bf | 0.6 mm |
| Closed Flange Width Bf1 | 0.6 mm |
| Performance | |
| Dynamic Load Cr (N) | 395 N |
| Static Load C0r (N) | 141 N |
| Grease Speed (x1000 rpm) | 8 x1000 rpm |
| Oil Speed (x1000 rpm) | 67 x1000 rpm |
| Design Configurations | |
| Open Model | MR84 |
| Flanged Open Model | MF84 |
| Shielded Model | MR84ZZ |
| Flanged Shielded Model | MF84ZZ |
| 2RS | - |
| 2RU | - |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | W, J, TW |
| Ball Qty. Z | 7 |
| Ball Size Dw | 1.2 mm |
| Shielded Weight (g) | 0.56 g |
| Flanged Shielded Weight (g) | 0.64 g |
| Open Weight (g) | 0.39 g |
| Flanged Open Weight (g) | 0.47 g |
MR84 8 mm 4 mm 2 mm Frequently Asked Questions about MR84 Metric Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To safeguard CHG Bearing MR84 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (4 mm x 8 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for MR84, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
To match diverse operational dynamics, CHG Bearing supplies MR84 with multiple cage configurations: high-strength pressed steel ribbon cages for standard duty, solid machined brass cages (M/CA) for heavy vibration and shock loads, or lightweight glass-fiber reinforced polyamide cages (TN9/TVP) for high acceleration and ultra-low noise.
Every production batch of CHG Bearing MR84 Metric Miniature Deep Groove Ball Bearings comes with complete traceability. Upon shipment, CHG Bearing can provide EN 10204 3.1 Material Test Reports (MTR), Certificates of Conformity (CoC), spectral chemical composition analysis, and dimensional inspection sheets.
