K&J Magnetics: R311

We are now required to collect sales tax in several states. If your business is tax exempt, learn more here.

Login

All orders placed & paid online by 1PM ET (M-F) will be shipped the same day!
Details

Policies | Contact Us | Track Your Package

Products » Neodymium Magnets » Ring Magnets

R311

R311

R311

Description
Technical
Downloads

Dimensions: 3/16" od x 1/16" id x 1/16" thick
Tolerances: ±0.004" x ±0.004" x ±0.004"
Material: NdFeB, Grade N42
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Axial (Poles on Flat Ends)
Weight: 0.00665 oz. (0.189 g)
Pull Force, Case 1: 0.70 lbs
Pull Force, Case 2: 1.75 lbs
Max Operating Temp: 176ºF (80ºC)
Brmax: 13,200 Gauss
BHmax: 42 MGOe

These tiny rings can be incredibly useful. They can be used for small arts and crafts projects, magnetic jewelry, science experiments and demonstrations, and pretty much anything else you can think of.

	Pull Force, Case 1 vs. distance: Magnet to a Steel Plate.
	Pull Force, Case 2 vs. distance: Between 2 Steel Plates.
	Pull Force, Case 3 vs. distance: Magnet to Magnet.
	Pull Force, Case 4 vs. distance: Magnet to Magnet Repulsion.
	Click here for a depiction of the magnetic field.
	View B-H curves for this magnet.

	Click here to download a PDF Specification Sheet.
	Click here to download a PDF drawing of this product.
	Click here to download a Certificate of Compliance for this product.
	Click here to download a RoHS Statement of Compliance for this product.
	Click here to download a Material Safety Data Sheet (MSDS) for this product.
	Click here to download a Conflict Minerals Reporting Template (CMRT).
	Click here to download a Certificate of Origin for this product.
	Click here for a REACH compliance statement.
	Click here to download a .STEP file (3D model).
	Click here to download an .IGS file (3D model).

Download the free Adobe Acrobat Reader

Price: $0.16

Quantity:

Qty:

Add to cart

Price ea.	Qty
$0.16	1-249
$0.15	250-2499
$0.14	2500-24999
$0.13	25000-49999
For pricing at higher order quantities, please email us!

Navigation

Quick Links

Magnet Calculator

RoHS Compliant

News

January
Specials

SB884-OUT

10% Off
SB884-OUT
Stepped Block Magnets
1/2" x
1/2" square

R424

10% Off
R424
Ring Magnets
1/4" O.D. x 1/8" I.D. x 1/4" thick

Order by phone:
1-888-SHOP-KJM
(1-888-746-7556)
or 215-766-8055

Order online for
fastest shipping!

No Minimum Order!

K&J Magnetics, Inc.
Your online source for incredibly powerful neodymium magnets

Magnet Shapes & Categories

Technical

Helpful Magnet Info

Company Policies & Info

Connect with K&J Magnetics

Search K&J part numbers:

RoHS Compliant

K&J Magnetics, Inc. will process your credit card order quickly, easily and securely.

Contact Us Order by phone: 1-888-SHOP-KJM (1-888-746-7556) or 215-766-8055

K&J Magnetics on YouTube