Specs
Nylon Pulleys Reinforced with Fiberglass
Advantages
- Molded-in bearings extend belt life. Molded-in bearings
are more precise than pressed-in bearings. Pressed-in bearings may
slip from side to side by as much as 1/16", meaning adjacent
idlers can be out of line by 1/8". The resulting misalignment
can cause premature belt wear. Our bearings do not slip. True-running
idlers extend belt life.
- Rugged. Our idlers are used in the hostile environment experienced
by commercial lawn mowers where high speeds (3600 rpm) and high temperatures
(170°F) far exceed stresses encountered in most conveyors. Even
under such severe conditions, our molded-in bearings will not separate
from the fiberglass-reinforced nylon rim.
- Higher Quality and Lower Prices. The production of molded-in
bearings requires fewer steps. This facilitates automation, improves
quality, and reduces costs. Consequently, our prices are very competitive.
- Pulley TIR (Total Indicated Readout) 0.020" Max
Materials
High-grade plastic nylon sheaves are reinforced with fiberglass.
Standard bearings are imported # 6203-2RS that are rated A.B.E.C.-1
precision
and have radial seals. U.S. made bearings are also available. Bore
adapters are sintered powdered metal. Bearing grease is Chevron
SRI-2 or the equivalent, which has an operating temperature range
of -20° to 350° F,
complies with Mil-Spec MILG3545G, and passes ASTM D 1743-73 rust
test with 5% synthetic sea water.
Bearings with seals are standard and are better
for dirty environments.
Bearings
with shields are
available but must be specified when ordering. Shielded
bearing turn easier, so they put less strain on motor and belts.
Chemical Resistance
Chemicals that damage Nylon
Other chemical may also attack nylon, but these are the most
common. Damage depends on concentration, temperature and exposure time.
Acetic Acid
Ammonium Chloride
Ammonium Hydroxide
Antimony Trichloride
Aqua Regia
Barium Chloride
Benzoic Acid
Boric acid
Bromine
Butyric Acid
Calcium Chloride
Calcium Hypochlorite
Calcium Thiocyanate
Chloroacetic Acid
Chlorosulfonic Acid |
Chromic Acid
m-Cresol
Formic Acid
Glycolic Acid
Hexafluoroisopropanol
Hydrochloric Acid
Nitric Acid
Perchloric Acid
Phenol
Potassium Permanganate
Potassium thiocyanate
Stannic Chloride
Stannic Sulfate
Sulfuric Acid
Tetrafluoropropane |
|
Radial Load Ratings for
Standard Pulleys (Sheaves)
Based on a 1500 hour L10 life.
| RPM |
Maximum (lbs.) |
| 32 |
1,600 |
| 100 |
1,140 |
| 300 |
790 |
| 600 |
630 |
| 1,200 |
500 |
| 1,500 |
465 |
| 1,800 |
436 |
| 2,400 |
395 |
| 3,600 |
345 |
| 5,000 |
310 |
| 7,200 |
275 |
| 10,000 |
245 |
| 12,500 |
230 |
Printable Version |