Qty: 1 PIECE OF MAGNET ONLY
Product Code: D-D50H25-N45
Diameter: 50mm (1.968" in.)
Height: 25mm (0.984" in.)
Magnetized Direction: Through height - 25mm
Theoretical Holding Force: ~96.56kg each
Surface Gauss: 4,844Gauss
Magnets rated holding force is when contacted directly against mild steel 3mm
thick or greater at horizontal position.
If you position the magnet sideway (vertically), you should divide the holding
force amount by 3. This is due to the the influences of gravity and reduced
Please note that magnetic strength will be weaker if the item you are
attaching to is alloy, stainless steel, Colourbond steel, painted, oily, rusty
Also, if the ferrous item your attaching to is thin, the magnet will be weaker
too, i.e. foil or sheet metal
If something in between the magnets and the surface your attaching to (i.e
fabric), the pull strength also will be lesser.
Rare earth magnets are a special type of magnet. They are the worlds strongest
type of magnet and are composed of Neodymium, Iron and Boron (NdFeB) elements.
We sell magnets ranging from N35 to N52, also with various coatings. We were
the first to offer BULK rare earth magnets on EBAY in Australia andwe are still
the CHEAPEST and the BEST!
Price Guarantee: All our competitors in Australia are more expensive than us
for the same product. You can check our competition on eBay or other websites
and if you find a cheaper product we will beat it guaranteed.
Discounts: Bulk purchase >$200 attracts special discount. Please contact
seller before checkout.
Custom Magnets: If you require a custom size please contact us.
We have disc, ring, block, cube, sphere, cylinders, magnetic lifters, magnetic
tools, and more.We are the magnet specialists.
We supply many of Australia's Universities and Research Institutes including,
CSIRO, RMIT, Griffith Uni, Melbourne Uni, Charles Sturt Uni, James Cook Uni,
QUT and more!. Our magnets are manufactured to ISO9001 Quality Standards from
leading manufacturers. We supply some of Australia's most innovative companies
in the development of new products, a plethora of craft stores, backyard
experimentalists and the hobbyists alike.
Safety Notes about Neodymium Magnets:
Handle magnets carefully. Neodymium magnets are strongly attracted and snap
together quickly. Keep fingers and other body parts clear to avoid getting
Keep magnets away from electronics. The strong magnetic fields of neodymium
magnets can erase magnetic media like credit cards, magnetic I.D. cards, and
video tapes. It can also damage electronics like TVs, VCRs, computer monitors,
and other CRT displays.
Keep magnets away from young children and pets. ALL MAGNETS we sold ARE NOT
TOYS and pose a choking hazard and can cause internal damage if swallowed.Older
children 13+ yr old should handle them only under adult supervision, and
wearing proper safety equipment.
Avoid use around people with pacemakers. The strong magnetic field of
neodymium magnets can disrupt the operation of pacemakers and similar medical
devices. Never use neodymium magnets near persons with these devices.
Use the magnets gently. Neodymium magnets are more brittle than other types
of magnets and can crack or chip. Do not try to machine (cut) them. To reduce
the chance of chipping, avoid slamming them together. Eye protection should be
worn if you are snapping them together at high speeds, as small shards may be
launched at high speeds. Do not burn them; burning will create toxic fumes.
Be patient when separating the magnets. If you need to separate neodymium
magnets, they can usually be separated by hand, one at a time, by sliding the
end magnet off the stack. If you cannot separate them this way, try using the
edge of a table or a countertop. Place the magnets on a tabletop with one of
the magnets hanging over the edge. Then, using your body weight, hold the stack
of magnets on the table and push down with the palm of your hand on the magnet
hanging over the edge. With a little work and practice, you should be able to
slide the magnets apart. Just be careful that they do not snap back together,
pinching you, once you have separated them.
Wear eye protection. Neodymium magnets are brittle and may crack or shatter
if they slam together, possibly launching magnet fragments at high speeds.
Drilling and Machining. Neodymium magnets are by nature very hard and
brittle. Drilling and machining is highly not recommended. Magnets will break
Be careful of the larger magnets, they BITE!!
Magnetic Strength and Gauss: Magnetic strength and Gauss ratings can be
confusing. Many companies advertise their magnets and magnetic products with
the “internal gauss” rating which is very different from the actual “surface
gauss”. The surface gauss is dependent on the N-rating, size and shape of
magnet. We provide a magnetic force calculator to calculate holding force and
gauss at our website. Just type “Frenergy” or “Magnetic Force Calculator” into
a search engine like Google and find our website. We have provided the surface
Gauss in the item description above and also further technical information in
the tables below.
Coatings: We have supplied a Coating properties table below. Most of our
magnets are nickel coated as this is the most durable and economical. Gold
coatings are used primarily for direct skin contact to reduce the risk of skin
Types of magnets: There are 5 main types of magnets. Neodymium and Samarian
Cobalt are permanent magnets which means they don't lose their magnetism over
time like Alnico, Ceramic/Ferrite or Flexible rubber magnets. Neodymium are the
strongest however most are rated below 100 degrees C. Some neodymium magnets
can tolerate up to 150 degrees C. Samarian Cobalt are the most expensive as
shown in the cost comparison and have both high temperature and high strength
properties. Ceramic/Ferrite and flexible rubber magnets are the least expensive
and also have low magnetic force.
Payment should be received within 3 days of auction ending. We require payment
for items prior to despatch and no goods will be despatched without payment
first being received.
If you prefer to use PayPal we are PayPal verified. Just follow the PayPal
payment instructions when you receive the eBay invoice.
Credit / Debit Card
Please contact us for credit card payment.
We accept Visa and Mastercard only.
Sorry no AMEX)
We Prefer Direct Deposit
We prefer direct deposit as this saves us fees and charges. You can make a
direct deposit to our Australian bank. Follow the instructions for Bank deposit
provided when you receive your eBay invoice. If you cant find the details or
need them sent, please email us.
Yes! We combine postage on request. Most items are only $1 extra per
additional item. If you want to purchase multiple items please contact us
before you pay for the items.
Magnets and magnetic products are classed as dangerous goods if they exceed
0.159 A/m @ 2.1m from the packaged surface (Australia Post guidelines). We pay
a 3rd party packing service $5 per order to carefully pack our products. The
packing fee is contained within P&H price. We do not profit from postage and
Orders received before 2pm, mostly will be shipped on the same day. We
normally ship within 24-48 hours after receiving payment. We are located in
Brisbane, Australia and ship internationally. Domestic and International
deliveries times are as follows:
QLD, NSW, VIC, ACT metro: 2-4 business days
QLD, NSW, VIC, ACT regional: 4-5 business days
SA, NT, TAS, WA metro: 5-7 business days.
SA, NT, TAS, WA regional: 7-10 business days.
2-3 weeks (by regular airmail -no online tracking) depending on destination's
country. This time frame is not guaranteed. If you need tracking service,
please contact seller for additional charges for Registered Post, Track & Trace
or Express Post service.
IMPORTANT NOTE: Please check your country's import tax charges, duties and
fees. Customer/buyer is responsible for these additional charges that may occur.
Please allow these times before contacting us. We try to be very efficient and
provide excellent service.
If you want EXPRESS POST, REGISTERED POST, COURIER or any other type of
shipping method, please let us know.
We are an online store only so pickup is not available unless in special
circumstances and always by prior arrangement.
Please see feedback from our customers in the last few weeks.
If you have any questions about our products, would like a bulk quote or
custom magnet, please do not hesitate to contact us.
Please read our terms of sale prior to bidding. This is important and ensures
you are happy with our terms. We want your shopping experience to be a happy
one and wish to avoid any complications later on.
Out of Stock: In the rare event that we become out of stock of a particular
item. We will offer you your money back and an apology, or offer you a similar
replacement product that you agree to, or if you don't mind waiting we will
reorder the item and send to you in a few weeks depending on supply timeframe.
Bidding and Payment: If you bid on an item, you must pay for it. It is a legal
requirement. Any non-payment of items will be reported to eBay and you may
receive a non-payment strike against your eBay account. We reserve the right to
cancel a bid in these extreme circumstances. Items must be paid for within 5
Overseas Bidders: Payment can only be made via PayPal or through our credit
card.PRICES EXCLUDE ALL LOCAL COUNTRY IMPORT TAXES, DUTIES AND FEES. BUYERS
MIGHT NEED TO PAY IMPORT TAXES IF ABOVE CERTAIN VALUE. PLEASE CHECK WITH YOUR
Postage: We try to make sure the postage costs are fair, and cover the
expenses necessary to get your product to you. Please only bid on an item if
you are happy with the quoted postage. As mentioned we use a 3rd party packing
service who charge us $5 per order for postage and handling. Many of our
magnets need to be carefully wrapped so we can post them legally through the
Australia Post mail service. We don't profit from postage.
Feedback: We will leave feedback for our customers and appreciate you leaving
feedback for us. It lets others know what your experience was like with us and
helps our business.
Faulty Items: All products are individually inspected before being dispatched,
to ensure items are sent out in perfect condition. In the unlikely event that a
product is faulty, please return it to us within 7 days of receipt in its
original condition. We can spot the difference between a faulty item and a
mishandled item, so please be careful when using the magnets and don't let them
smash together, IT WILL CHIP AND BREAK THEM.
YOU MUST READ THESE INSTRUCTION BEFORE YOU PURCHASE OR USE OUR MAGNETS**
We will not be held liable for any misuse of our products or failure to follow
the instructions below.
To clean magnets, clean with soapy water and damp cloth, rinse cloth then
wipe magnets again.
Our magnets are very powerful. The larger magnets can quickly snap
together. Please use caution and keep fingers and other body parts well clear
of separated magnets
If using our magnets for medical purposes and health benefits, please
consult your doctor
People with pacemakers, insulin pumps and other medical implants or devices
should consult their doctor before using or handling our magnets.
Our magnets should not be used by children to avoid risk of accidental
swallowing or injury.
Do not cut or grind the magnets as the magnetic material is explosive
To separate magnets, carefully slide them apart instead of attempting to
pull them apart. Larger magnets may require special tools to separate and to
hold them in place.
Keep larger magnets more than 30cm (1 foot) away from each other to avoid
the risk of them smashing together. If not handled correctly any size
magnet may break, crack, chip or shatter
Please use protective eye cover when handling the magnets
Keep magnets away more than 30cm (1 foot) away from credit cards, software,
or any other magnetic storage media. The strong magnets can wipe the