Our 255mm and 330 mm diameter
pneumatic tire consists of a deep groove, multi-purpose terrain tread
pattern that is mounted on a metal stamped rim rated at 300 lbs. and
420 lbs. respectively.
Each lightweight wheel is protected
with a 5 mil polyester powder coat gloss white paint or 3 mil
electroplating. Two precision long-life ball bearings housed
within metal carriers are firmly pressed into each end of the
wheel's hub center.
The hubs are then securely mated together
by four to six zinc coated hex bolts and nuts per wheel.
These light weight wheels freely rotate
on each end of a solid steel axle (tensile strength of 78,000 psi and
yield strength of 56,000 psi).
For superior protection
and durability, all of our metal parts are Powder coat painted.
We procure only virgin
Cold Drawn C-1018 Carbon Steel for fabricating our axles and mounts,
not reconstituted metal from scrap yards. And unlike our competitors
using inferior grade metals that are Hot Rolled processed, where heating
and cooling cycles typically distort their overall shape, our selection
for cold drawn metals produce exceptional consistency and accuracy in
maintaining the overall shape throughout their cross-sections per linear
feet. Cold drawn metals being perfectly round in contours with no surface
irregularities (whereas hot rolled axles are often egg-shaped and filled
with grainy surface irregularites) lower friction and extends the life
of wheel bearings. That cold drawn metals typically sell for four times
the cost of hot rolled is why we incorporate these high quality metals
into our products. Another reason is the fact that cold drawn steels
withstand bending and shearing twice greater than hot roll metals.
We provide only the finest professional
"specification" grade bolts, nuts, washers, and quick release
fasteners for use in all of our kits. They are made in the USA and shipped
out of Chicago, IL. and Milwaukee, WI. We do not procure imported fasteners,
because our tests revealed premature failures and various manufacturing
defects arising - no doubt - from their low costs.