Fabricated Steel Digger
Agricultural and Industrial Elevator Buckets


Digger elevator buckets are used in conjunction with plastic buckets to help break up material that can harden in the boot section of a bucket elevator.  Made from extra heavy duty steel with a reinforced front lip, digger buckets extend 1/4" further than plastic buckets to provide the proper digging action to loosen hardened material.




Digger Elevator Bucket


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  • Mild Steel    
  • Stainless Steel    
  • AR Plate    


  • Reinforced Lip for Superior Abrasion Resistance and Strength    
  • Resistant to Distortion from Scooping Heavy or Packed Materials    
  • Available in Traditional Wingless or CC Styles    
  • Can be Mounted on Chain or Belting    


  Consult 4B to to ensure no clearance issues occur when using digger buckets    
  in your elevator.  Digger buckets typically installed using a 1 to 10 ratio, contact    
  a 4B sales engineer for information on your specific application.    
  Product Questions? (309) 698-5611Phone or Email  Email  
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  Basic Digger Specifications:   Material Selection Guide  
    - For More Specifications, See Product Datasheet (PDF)   How To Measure A Bucket  
Size (in.)
Back Depth
Capacity (cu.in.)
Water Level
Capacity (cu.in.)
Water Level +10%
4 x 3 4-1/2 3-3/4 3-1/16 17 19
5 x 4 5-1/2 4-3/4 4-1/16 37 41
6 x 4 6-1/2 4-3/4 4-1/16 45 50
7 x 4 7-1/2 4-3/4 4-1/16 53 58
6 x 5 6-5/8 5-3/4 5-3/16 70 77
7 x 5 7-5/8 5-3/4 5-3/16 83 91
8 x 5 8-5/8 5-3/4 5-3/16 95 105
9 x 5 9-5/8 5-3/4 5-3/16 107 118
10 x 5 10-5/8 5-3/4 5-3/16 120 132
11 x 5 11-5/8 5-3/4 5-3/16 132 145
12 x 5 12-5/8 5-3/4 5-3/16 145 160
8 x 6 8-5/8 6-7/8 6-1/16 136 150
9 x 6 9-5/8 6-7/8 6-1/16 154 169
10 x 6 10-5/8 6-7/8 6-1/16 172 190
11 x 6 11-5/8 6-7/8 6-1/16 190 209
12 x 6 12-5/8 6-7/8 6-1/16 209 230
13 x 6 13-5/8 6-7/8 6-1/16 227 250
14 x 6 14-5/8 6-7/8 6-1/16 240 264
10 x 7 11 8-1/16 7-1/16 241 266
11 x 7 12 8-1/16 7-1/16 267 293
12 x 7 13 8-1/16 7-1/16 292 321
13 x 7 14 8-1/16 7-1/16 317 349
14 x 7 15 8-1/16 7-1/16 343 377
15 x 7 16 8-1/16 7-1/16 368 405
16 x 7 17 8-1/16 7-1/16 393 432
10 x 8 11 9-1/16 8-1/4 316 348
11 x 8 12 9-1/16 8-1/4 349 384
12 x 8 13 9-1/16 8-1/4 384 422
13 x 8 14 9-1/16 8-1/4 417 459
14 x 8 15 9-1/16 8-1/4 451 496
15 x 8 16 9-1/16 8-1/4 484 533
16 x 8 17 9-1/16 8-1/4 517 569
18 x 8 19 9-1/16 8-1/4 586 645
20 x 8 21 9-1/16 8-1/4 652 718
  Literature:   White Papers:  
  Product Datasheet   Achieving Maximum Capacity on a New or Existing Bucket Elevator  
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  Technical Links:      
  Bucket Elevator Design Service      
  Bucket Material Selection Guide      
  How To Measure A Bucket      
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  What is a HIGH EFFICIENCY elevator bucket?  
  HIGH EFFICIENCY elevator buckets incorporate all five of the following characteristics: a smooth interior front face with no "breaks", wing-less side walls, close vertical placement on the elevator belt, a tapered bottom and the ability to nest for shipping and storage.  For more details, CLICK HERE  
  Why use Low Profile elevator buckets?  
  Low profile elevator buckets are created to achieve the closest vertical spacing possible on the elevator belt, thereby optimizing the system for the greatest potential capacity.  Some styles of elevator bucket require modification and others are low profile by standard design.  Wet or sluggish inputs do not generally load and discharge well in low profile buckets.  Due to the extra capacity that is generated and the weight of the additional buckets and material, belt PIW rating, pulley shaft diameters and motor HP may have to be upgraded.  Check with 4B engineering department about the best way to get the most capacity out of your elevator leg.  
  Why add vent holes to the bottom of an elevator bucket?  
  When elevating fluffy or powdery materials, vent holes in the bottom of the elevator bucket allow it to fill and discharge more efficiently.  As material enters the bucket, it encounters a pillow of air resting in the bottom.  Vent holes provide an escape path for this pillow of air, so that the entering material does not bounce out of the bucket and back down the elevator leg casing.  Upon discharge, the vent holes allow air to re-enter the bucket at the material exits, releasing any vacuum that might hold it the bucket too long, creating down legging.  
  Are CC style elevator buckets interchangeable with Starco elevator buckets?  
  Starco elevator buckets have a special shallow geometry and are intended to be placed extremely close together on the elevator belt.  Therefore, you should check with the 4B engineering department before replacing Starco elevator buckets with any other brand or design.  
  How long of an elevator bolt do I need?  
  When installing buckets on an elevator belt, use this simple formula:
(belt thickness + bucket back thickness + washer thickness + nut thickness + 1/4 inch)
  What is a "digger" bucket?  
  Some materials can form a hardened crust along the side wall of the elevator boot, and powders sitting over time can become rock hard.  Both of these issues can cause premature elevator bucket wear.  Digger buckets are designed to have slightly more width and projection than standard buckets, thereby "digging" through or breaking apart the hardened material, helping to prevent added wear to the standard buckets.  Digger buckets are traditionally made from steel, however nylon buckets may also be used depending on the application.  
  How many digger buckets do I need?  
  For most applications, use one digger bucket for every nine standard buckets.  
  Can I use buckets on an overlap splice?  
  An overlap splice doubles the thickness of the belt, so a bucket's projection will increase on the overlap.  Usually this will not cause a problem, but if it does, you can use buckets with one inch less projection or cut the tip of each bucket by half an inch on the spliced area.  
  When using an overlap splice, how much extra belt should I use for the splice?  
  The length of the splice should be three times the width of the belt.  
  How often should I replace head pulley lagging?  
  Lagging should be replaced every time the elevator belt is replaced.  
Digger Wingless Elevator Bucket
Digger CC Elevator Bucket
  No videos currently available for this product.    

At 4B we have helped to upgrade hundreds of bucket elevators over the years for many different industries.  Our application engineering expertise includes: grain storage, animal feed, flour milling, brewing, biomass, cement, coal, frac sand, as well as other processing industries.

Using your key technical data, 4B engineers will provide preliminary design and component details to enable your bucket elevator to operate at its optimum capacity and discharge potential.  If your existing elevator cannot be upgraded to meet your current needs, 4B engineers can provide a basic design for a new one.

Take advantage of 4B’s FREE worldwide technical support from a team of engineers specializing in upgrading and optimizing bucket elevators.

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