Belts
— OSHA requires all grain elevator belts must be static conductive,
electrical reistance not to exceed 300 megohms. (Applies to installations in the U.S. where OSHA reles are applicable).
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Rubber Belt
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SOA (SOR/FA/SC) — superior oil resistance for very oily applications such
as sprayed grain with vegetable oils and/or dust suppressant additives or feed containing high amounts of animal fat. Meets OSHA and MSHA specifications. -10F° to 170F°.
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MOA (MOR/FR/SC) — moderate oil resistance for grain handling and materials containing only moderate amounts of naturally inherent oils. Meets OSHA and
MSHA specifications. -13F° to 170F°; (-30F° to 225F°)
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PVC Belt
— Moderate oil resistance for grain handling and materials containing only moderate amounts of naturally inherent oils. Meets OSHA requirements and is retardant/fire resistive (-13F° to 170F°); (-20F° to +212F°)
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Industrial Belt — materials other than feed/ grain must use special covers per the manufacturer’s recommendation, and specific to the handled material.
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Maximum Belt
Elongation(stretch) |
Rubber: to 1.5% of total length, depends on application
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PVC — charted as “minimal” in manufacturers’ charts
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Maximum Belt Width — (Rubber & PVC) 60″ for all, 72″ for some types. |
Splice Strength of various splice methods. In order of strength:
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1 Vulcanized
(requires special tools)
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2 Lap Splice
(overlapping ends)
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3 Butt splice
w/ splice belt
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4 Mechanical
(angle/bar/clamp-types)
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Temperature Range For Buckets
(Get manufacturer’s specifications for specific applications)
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Polyethylene
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-120F° > 180F°
(210F° intermitt) |
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Urethane
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-120F° > 180F°
(210F° intermitt) |
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Cast Urethane |
-40F° > 250F°
(selected types) |
Nylon
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-60F° > 300F°
(350F° intermitt) |
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Steel stamp
or fab |
-60F° > 225F°
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Cast Iron
Ductile |
to 600F° |
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• Steel Backing Plates
are required with non-metallic buckets
when used on chain and at high temperatures
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• Plastic Backing Washers
should be used in seed elevator applications
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• Multiple-rows of buckets
are vertically offset 1/2 spacing distance from adjacent rows
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• Elevator Bolts
– With plastic buckets use #1 flat-head bolt, hex nut, flat washer and lock washer, or fanged bolt, nylock nut and flat assembly washers. Use serrated lock nuts for steel buckets. Serrated lock nuts on plastic form stress marks.
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• Vented Buckets: Will help almost every application, but add to cost. Venting should ALWAYS be used with materials less than 25 PCF, dusty materials, wet, oily, sticky materialls, and those that compact in boot.
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• Digger Buckets Are recommended for materials that compact in the boot at 1:8 or 1:10 spacing. Bucket Projection is larger than standard buckets, and removes built-up material that could damage regular cups.
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