S684-MC3-AF12

Name: S684-MC3-AF12 - Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Stainless Steel AISI 440C
Brand: MBA
SKU: S684MC3AF12
Price: 3.68 AUD
Availability: LimitedAvailability

Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Stainless Steel AISI 440C

Images are indicative only and may not represent the pack quantity or specific item details. Images should be used as a guide in conjunction with the product description.

1 4

MBA

Store: Minibearings - Miniature Bearings Australia - Domestic & Export

Category: Bearings - Single Row Ball - Unflanged - Precision - 440C Stainless

Additional resources:
Tolerances
Standard Bearings PDF Catalogue
Shafting

Price:

$3.68 AUD

Each
Qty: 1 available now
Order 50 or more for $3.31 AUD Each

Special Offer: If you purchase the remaining quantity of this item, you will receive the bulk price.

Product Details:

ID (d): 4.000mm
_{+ 0.000 / - 0.0075}
_{(4.000mm is 0.157 in.)}

Stainless Steel AISI 440C

OD (D): 9.000mm
_{+ 0.000 / - 0.0075}
_{(9.000mm is 0.354 in.)}
Width (B): 2.500mm
_{+ 0.000 / - 0.125}
_{(2.500mm is 0.098 in.)}
Precision Grade: Abec 1
Closure Type: Open
Bearing Type: Radial
Lubricant: AF12 Aeroshell Fluid 12 Oil

Brand: MBA
Country of Origin: JP

Product Compliance and Data

Alternative Parts Include:

Stainless 684MC3AF12
Stainless 684-MC3-AF12
GRW S684
MPB SUL40C
ADR W618-4
Alternative To Check W618-4
ADR WAX4
Alternative To Check WAX4
UL409X
W6184
DDL940
DD-L940
SS-L940
SSL940
684BASIC

We offer equivalents to many brands including Anderton, Barden, Berg, Designatronics, EZO, ISC, Koyo, Myonic, NMB, Nordex, NSK, Ondrives, Reid Industrial, RMB, SDP-SI, Seeger, SKF, and more.

View full details

Click to open these sections

SHIPPING

Shipping Policy

Insurance, Brands & Related Information

PICK UP

Pick up is available from our Coopers Plains warehouse after your order is ready. Please refer to your ready notification email, and bring it with you to collect your parcel.

PDF CATALOGUES

You may freely download the following catalogues to review and compare products. To help you select the most readily available items, rows are colour coded and marked according to the key at the bottom of each page.

Part numbers from these catalogues can be checked in the online store. If they don't appear in the store, please email us for more information about the part.

Ball Lock Pins

Balls

Bearing Material Selection and Benefits

Bearings - Ceramic

Bearings - Corrosion Resistant

Bearings - Economy

Bearings - High Speed

Bearings - Plastic

Bearings - Radial - Master List

Bearings - Standard Range

Bearings - Super Precision

Bearings - Thrust

Bushes - Metallic & Plastic

Bushes - Sintered Bronze

Bushes - Solid Bronze

Poly Vee Belts and Pulleys

Push On & Push In Rings

Thumbs Screws and Nuts

Timing Belts

Timing Pulley Stock

Timing Pulleys

Vibration Mounts - Bobbins and Buffers

Washers - Disc Spring

Washers - Precision Shim

Washers - Wave

Washers and Spacers

CROSS REFERENCES

We provide equivalents to many brands including Berg - Designatronics - Nordex - NSK - Oilite - Ondrives - Reid Industrial - SDP-SI - SKF. The following PDF cross references contain hundreds of thousands of part conversions.

ADR and SKF

Anderton Circlips

Barden Bearings

Designatronics SDP-SI

Essentra

Flocast Bronze Bushes

K&S Metals

Miniature Precision Bearings

Timing Belts & Pulleys

Information, Catalogues, and News

View all

Free Disc Spring Washers Catalogue

July 18, 2025
Download Disc Spring Washers Catalogue PDF *** Update 2025.2 *** Disc springs are used for pre-loading applications. Our range includes carbon spring steel and various grades of stainless steel. The...

Free Disc Spring Washers Catalogue

July 18, 2025
Download Disc Spring Washers Catalogue PDF *** Update 2025.2 *** Disc springs are used for pre-loading applications. Our range includes carbon spring steel and various grades of stainless steel. The...
Free Washers & Spacers Catalogue

July 18, 2025
Download the MBA Washers & Spacers PDF Catalogue *** Update 2025.4 *** The MBA Washers and Spacers catalogue includes flat washers and round through bore spacers of Aluminium, Brass, Carbon...

Free Washers & Spacers Catalogue

July 18, 2025
Download the MBA Washers & Spacers PDF Catalogue *** Update 2025.4 *** The MBA Washers and Spacers catalogue includes flat washers and round through bore spacers of Aluminium, Brass, Carbon...
Free Shaft Collars Catalogue

July 13, 2025
Download the MBA Shaft Collars PDF Catalogue *** Update 2025.2 *** The MBA Shaft Collars catalogue includes round bore, threaded bore and hex bore shaft collars in carbon steel and...

Free Shaft Collars Catalogue

July 13, 2025
Download the MBA Shaft Collars PDF Catalogue *** Update 2025.2 *** The MBA Shaft Collars catalogue includes round bore, threaded bore and hex bore shaft collars in carbon steel and...
Looking for Full Product Data Sheets?

July 11, 2025
Full product data sheets are available from the link at the lower right of any product page. Full data sheets often have additional product information that isn't available on the...

Looking for Full Product Data Sheets?

July 11, 2025
Full product data sheets are available from the link at the lower right of any product page. Full data sheets often have additional product information that isn't available on the...

1 4