K&J Magnetics: R821

For the Memorial Day holiday, orders placed after 1:00PM EDT on Friday, 5/26/2023, will be shipped on Tuesday, 5/30/2023.

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

Login

Cart (0)

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

R821

R821

R821

Description
Technical
Downloads

Dimensions: 1/2" od x 1/8" 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: 0.0499 oz. (1.41 g)
Pull Force, Case 1: 2.98 lbs
Pull Force, Case 2: 13.31 lbs
Max Operating Temp: 176ºF (80ºC)
Brmax: 13,200 Gauss
BHmax: 42 MGOe

These thin rings are useful for a wide range of applications.

	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: $0.61

Quantity:

Qty:

Price ea.	Qty
$0.61	1-24
$0.60	25-49
$0.58	50-99
$0.57	100-249
$0.56	250-499
$0.54	500-999
$0.53	1000-2499
$0.52	2500-4999
$0.50	5000-9999
$0.49	10000-24999
For pricing at higher order quantities, please email us!

Recently Viewed

DA1

Refrigerator Magnets

BX082CS-P-N52

Grade N52 Magnets

Navigation

Quick Links

Magnet Calculator

RoHS Compliant

News

May
Specials

DA4

10% Off
DA4
Disc, 5/8" dia x 1/4" thick

BX066

10% Off
BX066
Block, 1" x 3/8" x 3/8"

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.

K&J Magnetics on YouTube