GB - Spidex™ Buckets
Bottomless Elevator Buckets

High capacity bottomless elevator bucket system. GB Spidex™ buckets are closely spaced with a series of buckets without bottoms followed by one bucket with a bottom. The material is lifted in a continuous column and the carrying space normally wasted between conventional buckets is fully utilized to achieve much greater capacity. The buckets pick up and discharge conventionally, but care must be taken in the design of the boot and the head.

GB Spidex elevator bucket
Product Features
  • Double existing capacity
  • Elevator buckets are closely spaced & product is elevated in an almost continuous column
  • Self-cleaning - ideal for sticky materials
  • Pressed seamless steel
GB Spidex bucket - drawing
GB bucket A B C T Weight Capacity (L) Holes E F G Bucket Spacing Max.
STANDARD (mm) (mm) (mm) (mm) (kg) Z2 (total) No. (dia mm) (mm) (mm) (mm) Pcs/Mtr
GB130-110-B 136 114 51 1.5 0.3 0.5 2 8.5 70 22 57 17.5
GB130-110+B 136 114 51 1.5 0.36 0.5 2 8.5 70 22 57 17.5
GB180-140-B 185 139 65 1.5 0.45 1.18 2 9 100 32 71 14
GB180-140+B 185 139 65 1.5 0.55 1.18 2 9 100 32 71 14
GB230-165-B 237 163 71 2 0.83 2.1 2 10 120 32 80 12.5
GB230-165+B 237 163 71 2 1.12 2.1 2 10 120 32 80 12.5
GB300-165-B 305 166 80 2 1.1 2.75 3 10.5 90* 36 88 11.4
GB300-165+B 305 166 80 2 1.4 2.75 3 10.5 90* 36 88 11.4
GB350-200-B 355 200 100 2.5 1.95 4.75 4 11 90 42 111 9
GB350-200+B 355 200 100 2.5 2.5 4.75 4 11 90 42 111 9
GB400-220-B 410 218 115 3 2.3 6.91 4 11 100 45 125 8
GB400-220+B 410 218 115 3 2.95 6.91 4 11 100 45 125 8
GB bucket A B C T Weight Capacity (L) Holes E F G Bucket Spacing Max.
SPECIAL RANGE (mm) (mm) (mm) (mm) (kg) Z2 (total) No. (dia mm) (mm) (mm) (mm) Pcs/Mtr
GB215-95-B 220 93 63 1.5 0.4 0.95 2 8.5 127 25 67 14.9
GB215-95+B 220 93 63 1.5 0.5 0.95 2 8.5 127 25 67 14.9
GB380-165-B 380 165 80 2.5 1.7 3.5 4 9 *** 36 88 11.4
GB380-165+B 380 165 80 2.5 2.15 3.5 4 9 *** 36 88 11.4
GB325-190-B 335 191 88 2.5 1.65 3.6 3 9 100 25 100 10.5
GB325-190+B 335 191 88 2.5 2.11 3.6 3 9 100 25 100 10.5
GB400-200-B 410 200 97 2 1.66 5.4 4 9 94 32 105 9.5
GB400-200+B 410 200 97 2 2.2 5.4 4 9 94 32 105 9.5
GB430-200-B 437 200 95 2 1.77 5.56 4 9 94 32 105 9.5
GB430-200+B 437 200 95 2 2.3 5.56 4 9 94 32 105 9.5
SPIDEX bucket A B C T Weight Capacity (L) Holes E F G Bucket Spacing Max.
(mm) (mm) (mm) (mm) (kg) Z2 (total) No. (dia mm) (mm) (mm) (mm) Pcs/Mtr
Spidex 100-90-B 106 88 45 0.9 0.1 0.23 2 8.5 50 17 50 20.0
Spidex 100-90+B 106 88 45 0.9 0.12 0.23 2 8.5 50 17 50 20.0
Spidex 130-110-B 136 114 51 1.5 0.26 0.5 2 8.5 70 22 57 17.5
Spidex 130-110+B 136 114 51 1.5 0.31 0.5 2 8.5 70 22 57 17.5
Spidex 180-140-B 185 139 65 1.5 0.41 1.08 2 9.0 100 32 71 14.0
Spidex 180-140+B 185 139 65 1.5 0.5 1.08 2 9.0 100 32 71 14.0
Spidex 280-165-B 291 165 80 2 0.99 2.67 3 11.0 90 36 87 11.5
Spidex 280-165+B 291 165 80 2 1.32 2.67 3 11.0 90 36 87 11.5
Spidex 330-190-B 341 192 99 3 2.07 4.5 3 12.0 100 49 105 9.5
Spidex 330-190-B 341 192 99 3 2.82 4.5 3 12.0 100 49 105 9.5

** Bucket spacing for free flowing granular products only.

* Fixing holes GB380-165 --  alternative hole punching available: slotted for 101mm to 104mm holes.

***Fixing holes GB380-165, hole centres 76-127-76mm

Note: Spidex 100-90, 130-110 and 180-140 buckets have flat holes with notched back.

GB Elevator Buckets - Spacing ProfileWith the GB system, buckets are centered at very close spacing with a series of buckets without bottoms followed by a closed bottom bucket. The material is lifted in a continuous column, so the carrying space between conventional buckets is fully utilized by material to achieve much greater capacity. The buckets "fan out" as they pass over the head and tail pulleys to facilitate pick up or discharge.    
       
The system increases capacity of an existing elevator leg at a much lower cost than the purchase of a new bucket elevator. The GB system can also be used in new elevators to give the same capacity as larger elevators using traditional buckets, saving manufacturing costs and plant space.    
       
GB Spidex™ buckets are particularly useful with sticky products which can clog up the bottoms of  conventional buckets reducing capacity and increasing maintenance.  With GB buckets, only the bucket with the bottom can become clogged, and capacity can be rated to allow for this. The remaining buckets, being bottomless, are self cleaning.  Aeriable products are also handled easily as GB buckets have the ultimate vented design.    
       
Whether your leg is handling grain, feed, meals, fertilizer, or industrial materials such as free flowing cement, 4B can design a GB Spidex™ bucket system to deliver the capacity you require.    
         
Sample Capacity Between GB Spidex™ and CC Style Buckets:  
    • GB 12 x 6:  3-7/16" Spacing, 630 ft/min Belt at Actual Working Capacity = 12,600 CFH  
    • CC-HD 12 x 6:  8" Spacing, 630 ft/min Belt at Water Level +10% = 6,694 CFH

FAQ - Elevator Buckets

FAQ - Elevator Buckets

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.

Bucket Elevator Design Service

Bucket Elevator Design Service

At 4B, we have designed hundreds of bucket elevators for all industries, including Animal Feed, Grain Handling, Flour Milling, Malting & Brewing through to Cement, Coal and other heavy industries.

Take advantage of 4B's free, guaranteed worldwide technical support service from a team of engineers specialising in the design and calculation of bucket elevators.. Using your key technical data, our engineers can give you a detailed technical recommendation for the ideal bucket elevator with the ideal capacity and discharge characteristics. We can either design your new bucket elevator or we can help you to increase the capacity of your existing bucket elevator.

To get a free bucket elevator calculation

Please fill this form in as accurately as possible to allow us to deal with your enquiry more effectively. 

At 4B, we have designed hundreds of bucket elevators for all industries, including Animal Feed, Grain Handling, Flour Milling, Malting & Brewing through to Cement, Coal and other heavy industries.

Take advantage of 4B's free, guaranteed worldwide technical support service from a team of engineers specialising in the design and calculation of bucket elevators.. Using your key technical data, our engineers can give you a detailed technical recommendation for the ideal bucket elevator with the ideal capacity and discharge characteristics. We can either design your new bucket elevator or we can help you to increase the capacity of your existing bucket elevator.

To get a free bucket elevator calculation

Please fill this form in as accurately as possible to allow us to deal with your enquiry more effectively. 

Contact Details

Elevator Details

If you would like to send us a technical drawing or document with your enquiry, please send to 4b-uk@go4b.com.