Extended Inner-Ring Flanged BearingsDeep Groove Ball Bearingscross-ref: NSK

MF84

d 4 × D 8 × B 2 mm

The MF84 is a deep groove ball bearing with bore 4mm, outer diameter 8mm, and width 2mm rated for dynamic load 0.3 kN.

Request Quote for MF84 Search Similar

MF84 — representative product photo — Representative product

MF84 · 4x8x2 mm

📋 Technical Specifications

Bore (d)

4mm

Outer Dia. (D)

8mm

Width (B)

2mm

Dynamic Load (Cr)

0.34 kN(338.065 N)

Static Load (C0r)

0.11 kN(111.206 N)

Reference Speed

56000rpm

Bearing type	Deep Groove Ball Bearings
Series	Extended Inner-Ring Flanged Bearings
Seal type	Open
Material	Confirmed per inquiry — grade and certificate availability reviewed before quotation
Bore type	Confirmed per drawing
Dimension unit	millimeter (mm)

🔐 Model Code Breakdown

What each part of MF84 means.

Mini Flange

MF	MF = miniature extended-inner flange

📋 Nominal Variants by Seal Type

Catalog variants open a detail page. Inquiry-only configurations go directly to RFQ.

Seal Type	Model Code	Typical Use
Double metal shields	MF84 ZZ	General dust protection	Quote →
Double contact rubber seals	MF84 2RS (inquiry only)	Dust and moisture protection at moderate speed	Quote →
Double non-contact rubber seals	MF84 2RZ (inquiry only)	Lower-friction sealing at higher speed	Quote →
C3 radial clearance	MF84 C3 (inquiry only)	Motors and applications with higher operating temperature	Quote →

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)	4
Outer diameter (D)	8
Width (B)	2

Corner radius, shoulder dimensions, fits and tolerances are confirmed against the requested suffix and application drawing before quotation.

📑 Drawings & 3D Model

📑

2D Drawing

Request drawing →

📅

3D STEP Model

Request STEP →

🔎

CAD File

Request CAD →

Drawings and 3D models are provided per inquiry. Tell us your application and we will send the appropriate file format (DXF, DWG, STEP, IGES).

⚡ Source-Data Reference Speed

Catalog reference

56,000 rpm

Lubrication method and application speed limit are confirmed per inquiry; no oil-speed value is derived from this number.

⇄ Same-size Bearings & Reference Options

The models below share the 4x8x2 mm boundary dimensions. Matching d/D/B alone does not prove interchangeability; verify seals, clearance, ring features, load ratings, fits, and application conditions before replacement.

Model	Relationship	Series	Seal	Action
SMF84	Different outer-ring feature	Extended Inner-Ring Flanged Bearings	Open	Quote →

🔄 Related Models

Same bearing family or similar dimensions.

Same model family — dimensions may differSimilar size — reference only, verify all interfaces

⚙ Typical Applications

Electric motors

Fans and blowers

Pumps

Household appliances

Power tools

Office equipment

General machinery

Why choose NLHB?

NLHB supports both in-house manufacturing and qualified partner sourcing. We confirm the specification, supply route, inspection requirements, and available documentation before quotation.

About NLHB →

4,315

Catalog Models

15+

Years

RFQ

Specification Confirmed

❓ Frequently Asked Questions

What are the dimensions of MF84?

The MF84 bearing has bore (d) = 4 mm, outer diameter (D) = 8 mm, and width (B) = 2 mm.

What is the load rating of MF84?

Dynamic load rating (Cr) = 0.34 kN (338.065 N), static load rating (C0r) = 0.11 kN.

What bearing series does MF84 belong to?

The MF84 belongs to the Extended Inner-Ring Flanged Bearings within the Deep Groove Ball Bearings category.

Can NLHB supply MF84 equivalents from other brands?

Depending on the model and order requirements, NLHB may manufacture in-house or source through qualified partner factories. Interchange and supply route are confirmed against your specification before quotation. All trademarks belong to their respective owners.

How do I order MF84 from NLHB?

Click "Request Quote" and send us your quantity, application, and required specifications. We review the specification, supply route, lead time, and pricing before issuing a quotation. Response time depends on specification complexity.

What materials are available for MF84?

Material grade is confirmed per inquiry. Availability depends on the model, quantity, application, and whether the order is manufactured in-house or sourced through a qualified partner factory. Material certificates or inspection documents are confirmed before quotation when required.

Get a quote for MF84

Send us your quantity, application and target lead time. We confirm spec, interchange and realistic delivery — no order confirmed until you approve.

Request Quote →