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 For radial loads that require a low profile,
Hartford Technologies manufactures a broad range
of easy-to-install needle bearings.
Needle bearings reduce friction and transmit
torque most efficiently in applications such as off-highway
and oil patch equipment, drive shafts, outboard engines
and air compressors. High load needle bearings are specified for
operations involving static loads, low speeds, or oscillation.
These needle bearings are used on a metal strapping tensioner tool used
to strap a metal band around a skid of product. The bearing is located in
the headset, at the hinge point. The material for the outer race and rollers
is chrome steel, hardened to Rc 60-62.
Formerly, there was a metal sleeve in the headset. Binding in the headset
was caused by the force required to pull the strapping to secure the load to
the skid. The needle bearings manufactured for the application by Hartford
allow a smoother rotation of the headset and eliminate the binding. As a
result, a stronger strapping can be achieved.
This is just one of the unique needle bearings manufactured by
Hartford for the packaging industry.
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Drawn Cup Needle Bearings are similar to standard roller bearings
except for their much smaller diameter-to-length ratio. In most cases,
a hardened shaft acts as the inner race. By controlling the clearance
between the rollers, the rollers are kept parallel to the axis of the shaft.
The low cross section design provides excellent load carrying capacity
while using minimal space.
In addition to our standard product, Hartford has extensive engineering
and manufacturing capabilities on two continents for custom needle bearings.
Standard Sizes (Specifications)
ID: 4mm through 60 mm
Minimum Orders
Up through 25mm: 1,000 qty.
Over 25mm: 500 qty.
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Sealed Drawn Cup Needle Bearings are similar to standard drawn
cup roller bearings except they are closed at one end.
Standard Sizes (Specifications)
ID: 8mm through 50 mm
Minimum Orders
Up through 25mm: 1,000 qty.
Over 25mm: 500 qty.
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Drawn Cup Full Complement Needle Bearings are similar to
standard needle bearings, except there is no spacing retainer
separating the rollers. This allows for more load-carrying capability
due to the increased amount of contact area.
Standard Sizes (Specifications)
ID: 6mm through 60 mm
Minimum Orders
Up through 25mm: 1,000 qty.
Over 25mm: 500 qty.
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 Drawn Cup Roller Clutches provide a
prevailing torque in one direction
while allowing free rotation in the other.
Specially formed ramps act as wedges
when rotated in one direction that lock with
a minimum amount of rotation (backlash).
Standard Sizes (Specifications)
ID: 4mm through 35 mm
Minimum Orders
Up through 25mm: 1,000 qty.
Over 25mm: 500 qty.
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Radial Needle Bearings assemblies consist of needle rollers
retained in some manner where the mating shaft and housing act
as the bearing races.
Standard Sizes (Specifications)
ID: 5mm through 75 mm
Minimum Orders
Up through 25mm: 1,000 qty.
Over 25mm: 500 qty.
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Long Cylindrical Roller and Cage Assemblies differ from our standard
Radial Needle Roller and Cage Assemblies in their increased length,
which helps distribute loads and provides more axial support.
Standard Sizes (Specifications)
ID: 19.051 through 74 mm
Minimum Orders
Up through 25mm: 1,000 qty.
Over 25mm: 500 qty.
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Custom Needle Bearings
Email us your requirements for custom needle bearings and let us
provide a solution. For more than 15 years, Hartford Technologies has
been a preferred supplier of standard and custom needle bearings
for OEMs and Tier 1s.
Let us put our expertise to work for you.
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