Evolution of Armstrong's Permanent Lifting Magnets
Posted on March 21, 2016
Since 1999, Armstrong Magnetics has always been continuing to improve the reliability and
durability of permanent lifting magnets design by adopting new magnet materials, new assembly construction and
As a lifting magnets manufacturer and distributor, Armstrong
developed models from the NL series to NL-A, then
to the current NL-B. Now, we only supply the NL-B series lifting magnets
for sheet metal in 10
sub-models with lifting capacities of 330 lb, 660 lb, 1320 lb, 2200 lb and 4400 lb, with
either welded or screw-on hoist rings.
1st generation: NL series
lifting magnets shown in the following photo.
- The hollow handle could easily be deformed as a result
of collisions and then no longer be rotated from OFF to ON position.
- The main body is constructed with two steel blocks, welded with two stainless
steel strips in between and bolted with two Aluminum plates at the ends. This structure
could not withstand strong collision or impact force.
2nd generation: NL-A series
permanent lifting magnets shown in the following photo.
- The Lock Pin is floating above the top of the main body
and could easily be damaged in a collision.
- The handle is a solid steel bar and would not be deformed
- The main body of NL-A is constructed with steel blocks
and welded together directly. This type of structure was
much stronger than the NL-series lifting magnet design.
3rd generation: NL-B series
lifting magnets for sale shown in the following photo.
Plus new service:
- The lifting magnet handle is a solid steel bar and could not be deformed
- The main body of NL-B is constructed with steel blocks and
welded together directly. This type of the structure should be much stronger than NL
lifting magnet device.
- The level part of the Lock Pin is lowered into the slot on
top of the main body and therefore the two sides of the slot can protect the Lock Pin
in case of collision.
- SafeLift™ mechanism predicts lifting capacity in a certain
condition. For detail please see NL-B
- Each NL-B lifting magnets has a unique serial number.
- The front end plate has Armstrong's logo.
- The back end plate has a casted model number.
- We call every new client before shipping the
magnets and investigate their lifting conditions in order to make sure the
lifting magnets to be shipped would be best
suitable for their application.
- Provide immediate repairs of the
permanent lifting magnets and replacements of any damaged