BEARINGS
End Uses
- Kingpin and drive
bushings, boom bushings, thrust washers and wear plates in off-road
equipment
- Landing gear bushings,
track roller bearings, rod ends and hose connections in commercial and
military aircraft
- Drill string centralizers,
valve seats, wear pads and drill bit bushings for petroleum exploration
and completion
- Wear
bars or ways on mechanical presses
- Valve seats, valve
guides, wrist-pin bushings and connector rod bushings in racing and high
performance engines
- Slippers, port plates,
rotors and sleeve bushings in rotary pumps
Why ToughMet®
(The World's Best Bearing Material) or Alloy 25?
Brush Wellman
ToughMet® and Brush Alloy 25 Bearings:
Treat your machines like the money-makers they are.
When a professional
athlete’s knee, elbow or shoulder suffers from overloading, impact
or overuse, the athlete uses the best available sports medicine technology
to relieve pain and restore performance, with the objective of an extended
career.
Consider
the down time costs:
- $3,000,000 right
fielder: $17,000 per day, 162 days per year.
- 300-ton dump truck:
$30,000 per day, 350 days per year!
When your heavy equipment
joints take a beating, turn to ToughMet® or Brush Alloy 25 bearings
to extend maintenance cycles, reduce down time and warranty repairs,
and enhance performance.
ToughMet®
and Brush Alloy 25 bearings: Orthopedics for Heavy Equipment
Maximum
support and cushioning that won't slow you down
User Benefit
/ Solution
The factors engineers
consider in their choice of bearing materials are similar to those considered
by athletes in deciding on a knee brace. The perfect knee brace would prevent
any damaging movements without impeding motion in the designed directions.
It would totally absorb impact and provide an even distribution of weight.
In addition, the perfect knee brace would never wear out and would tolerate
play in all weather conditions.
The perfect bearing
material has high strength and hardness for maximum support and resistance
to wear and deformation. It offers a low coefficient of friction and freedom
from galling, so as not to interfere with movement in the designed direction,
and a low elastic modulus that lets the bearing conform to the mating part
for a well-distributed contact area. Corrosion resistance and high thermal
conductivity allow the perfect bearing material to function in a variety
of environments.
Brush Wellman’s
ToughMet® is a superior bearing material. It has outstanding strength
and hardness compared to conventional bronze materials and even some steels.
The coefficient of friction is similar to that of leaded
bronze but ToughMet® exhibits a yield strength up to six times greater.
Both ToughMet® and Alloy 25 offer low elastic moduli (about two-thirds
that of steel), excellent corrosion resistance in both galvanic
and chloride environments and good thermal conductivity.
Neither alloy will gall to itself, steel or titanium at pressures up to
75% of the yield strength.
For additional engineering
data, see the “Engineering Guide to ToughMet®” in the Design
Center, or view the Guide to Copper Beryllium.
