AA Elevator Bucket
Severe Duty Urethane
This versatile bucket comes in a wide range of materials to meet any needs you may have. They work especially well in high-throughput elevators that handle industrial-type materials. Whatever your elevator handles, there is a bucket to match it in the AA series.
Why Urethane?
This severe-duty, non-corrosive, non-sparking material is tough yet flexible. These clean-discharging, lightweight buckets are a great choice for abrasive or high-throughput applications, because its resilience causes less product damage and reduces the product failure that can cause backlegging.
Features
- Prime virgin thermoplastic urethane
- Choose from 12 sizes
- Recommended capacity is 75% of gross capacity
- Can be intermixed with existing buckets
Applications
- Pelletized or Extruded Feeds
- Soybeans
- Fertilizers
- Oyster Shells
- Salt
- Sand
- Chemicals
- Abrasive Products
Additional Materials
Measurement Conversion: Imperial Metric
| Size (Nominal) Inches |
Dimension-Actual (Inches) Tolerance A, B & C ± .25” T ± .03125” |
Hole Drilling-Standard (Inches) Holes Drilled .03125” Oversize |
Capacity ■ Tolerance ± 3% |
Approx. Weight (Pounds) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length A | Proj. B | Depth C | Thickness T | Center to Center E | Number of Holes | Bolt Diameter | Distance Down D | Between Rows G | Gross X-X | Usable | ||||
| Cu. In. | Cu. Ft. | Cu. In. | Cu. Ft. | |||||||||||
| 4 X 2.75 | 4.3125 | 3 | 3.125 | .1875 | 2.3125 | 2 | .25 | .75 | — | 15.3 | .009 | 11.5 | .007 | 0.29 |
| 5 X 3.5 | 5.5 | 3.75 | 3.75 | .25 | 3.1875 | 2 | .25 | 1 | — | 30.2 | .017 | 22.6 | .013 | 0.52 |
| 6 X 4 | 6.5 | 4.5 | 4.5 | .25 | 4.375 | 2 | .25 | 1 | — | 50.5 | .029 | 37.9 | .022 | 0.70 |
| 7 X 4.5 | 7.5 | 4.75 | 5 | .25 | 2.5 | 3 | .25 | 1 | — | 77.8 | .045 | 58.4 | .034 | 1.00 |
| 8 X 5 | 8.5 | 5.25 | 5.5 | .25 | 3 | 5 | ✽ .25 | .875 | 1 | 105.0 | .061 | 78.8 | .046 | 1.23 |
| 10 X 6 | 10.625 | 6.5 | 6.625 | .3125 | 3.5 | 5 | ✽ .25 | .875 | 1 | 198.5 | .115 | 148.9 | .086 | 2.10 |
| 12 X 7 | 12.625 | 7.625 | 7.75 | .375 | 4.5 | 5 | ✝ .3125 | .875 | 1 | 319.6 | .185 | 239.7 | .139 | 3.18 |
| 14 X 7 | 14.625 | 7.625 | 7.75 | .375 | 4 | 7 | .3125 | .875 | 1 | 385.4 | .223 | 289.1 | .167 | 3.62 |
| 14 X 8 | 14.75 | 8.875 | 8.75 | .5 | 4 | 7 | .3125 | .875 | 1 | 494.6 | .286 | 371.0 | .215 | 5.10 |
| 16 X 8 | 16.75 | 8.875 | 8.75 | .5 | 4.5 | 7 | ✝ .3125 | .875 | 1 | 576.4 | .334 | 432.3 | .251 | 5.71 |
| 18 X 8 | 18.75 | 8.875 | 8.75 | .5 | 5 | 7 | ✝ .3125 | .875 | 1 | 653.9 | .378 | 490.4 | .284 | 6.42 |
| 18 X 10 | 18.75 | 10.875 | 10.875 | .5 | 5 | 7 | ✝ .3125 | .875 | 1 | 1001.1 | .579 | 750.8 | .434 | 9.41 |
■ Tapco recommends using gross X .75, for usable capacity
✽ Buckets can be drilled for .25” or .3125” bolts, please specify. .25” is standard.
✝ Buckets can be drilled for .3125” or .375” bolts, please specify. .3125” is standard.
Style:
AA
Design:
Centrifugal discharge.
Material:
Prime Virgin Thermoplastic Urethane.
Method of Manufacture:
Injection molded.
Color:
Beige/Tan.
Temperature Range:
-60°F to + 212°F/-51° C to + 100°C.
Flammability:
The urethane used in Tapco buckets, meets the criteria of the Underwriters’ Laboratory Bulletin No. 94 HB. It has been tested under ASTM Test No. D635 and has a burn rate of 0.76”/min. it also meets approval under motor vehicle safety standard No. 302, with a burn rate of 0.0”/min.
Standard Drilling:
No charge for standard belt or chain drillings when order totals 50 or more pieces of the same size. Contact Tapco for quotation on orders of less than 50 and/or special drill pattern requirements.
Venting:
Available on request. Contact Tapco for recommendations.
Usable Capacity:
Tapco recommends using 75% of gross, (100%) capacity.
Spacing:
A common spacing would be nominal projection plus 4”, however both closer and greater spacings may be used depending upon the application.
Interchangeability:
Can be intermixed with existing metallic or nonmetallic buckets. Some care should be taken that the leg does not become too far out of balance. Bucket projection varies by manufacturer and material. Check elevator for proper clearances. Contact Tapco for recommendations.
Installation:
Fanged elevator bolts and nylon insert lock nuts are recommended for pulleys 6” in diameter and over. No. 3, Eclipse slotted head elevator bolts are recommended for pulleys under 6” in diameter. Large flat steel (Fender) washers must be placed inside the bucket under the nuts.Check elevator for proper clearances.
FDA Status:
Our standard urethane does not meet the requirements for FDA approval. FDA approved urethane is available, special order.
Recommendations:
AA urethane buckets are ideal for use with foundry sand, gravel, coal, fertilizer, clay salt, and many other industrial materials. They are excellent for extremely high throughput elevators.
Limitations:
Urethane buckets should not be used on the following: (1) Materials over 212°F/100°C. (2) Large dense materials such as gravel and ores over 3/8” in diameter. (3) Some sharp sluggish materials such as large glass cullet.
Caution:
Welding and cutting on elevator legs without taking proper precautions is extremely dangerous and can cause a violent explosion. Tapco nylon buckets can be ignited and will burn from improper welding and cutting.
Important:
When elevating certain materials that harden or setup with moisture, a Tapco metallic digger bucket should replace every 10th urethane bucket. In some instances ductile iron AA style buckets (See catalog page 43) will not have suffi cient projection to protect the nylon bucket. It will be necessary to use a pad or spacer behind the digger bucket. Contact Tapco for recommendations.