Belt-winding core specifications
Standard Core
Outside Diameter |
Square Inside Dimension |
Safe Working Load
|
5″ | 2.25″ | 45 lb/in |
6″ | 3.25″ | 35 lb/in |
7″ | 3.25″ | 60 lb/in |
8″ | 4.25″ | 50 lb/in |
10″ | 4.25″ | 100 lb/in |
12″ | 6.25″ | 79 lb/in |
Not sure? Try our standard belt-winding core sizing tool.
Paper-wound Core
Outside Diameter |
Square Inside Dimension |
Safe Working Load
|
5.5″ | 2.25″ | 70 lb/in |
6.5″ | 3.25″ | 57 lb/in |
7.5″ | 3.25″ | 87 lb/in |
10.5″ | 4.25″ | 135 lb/in |
Staved Core
Outside Diameter |
Square Inside Dimension |
Safe Working Load (Based on
|
8.5″ | 2.25″ | 156 lb/in |
9.5″ | 4.25″ | 140 lb/in |
11.5″ | 4.25″ | 220 lb/in |
13.5″ | 6.25″ | 186 lb/in |
Note: These are suggested safe working loads. It is strongly recommended that customers do further testing under their in-plant conditions to ensure optimal performance. The safe working loads shown above are not intended to account for winding bar induced torsional shock loads imposed by sudden acceleration or deceleration.
→ Download our Belt-Winding Core product sheet.
→ Download our Notched Core product sheet.
Don’t see the size you’re looking for? Our engineers can also custom design and manufacture cores to meet specific-use demands (e.g., round holes, variable lengths).