Bunting Magnetics

Conveyor Component Selection Guide

Bunting’s standard components come in a range of sizes and magnetic strengths to handle nearly every magnetic conveying situation. Magnetic strength requirements vary with the gauge, weight, size, shape, and configuration of the parts being conveyed. The following guide will help you select components appropriate for your application. For further assistance, give us a call.

Tips for Effective Conveyor Design

1. Select a belt speed so that a uniform flow of product is achievable.
2. Proper feeding of product to the magnet element is important to achieve maximum volume.
3. Use as thin a belt as possible for conveying cans to achieve maximum holding values.
4. The flatter the angle of incline – the less magnetic strength will be required to secure the product.
5. Cleats need to be used in addition to magnets on some cylindrical products to prevent roll back.
6. Cylindrical products can be conveyed without cleats with the proper strength of magnet if conveyed in mass.
7. To convey cans, use belts with a slight texture to prevent slippage in wet applications.
8. To achieve maximum holding strength use as thin of nonmagnetic slider bed as possible between the magnetic element and the belt.
9. Belts can be run directly on top of Bunting® magnetic rails.
10. Corner pulleys reduce belt loads and horsepower requirements versus corner curve sections.
11. Corner curve sections give products more stability than corner pulleys.
12. Running belts as loose as possible yet without slippage on the Drive Pulley will lengthen belt life and reduce loading.
13. Taller parts past 2 to 1 ratio usually require extra magnetic strength to stabilize if conveyed on inclines.
14. Multiple lanes of lighter magnetic rails can be better than a single strong rail on larger parts.
15. When conveying product using multiple magnetic lanes, the lanes must be equally loaded for the belt to track properly.
16. To reduce friction and heat build-up it’s best to use magnetic corner pulleys on conveyors with belt speeds over 150 FPM.
17. When conveying nails or fasteners, select a belt width equal to the rail width plus twice the maximum product length.
18. Stronger magnets at infeed areas aid in transfers for some can sizes.
19. Look for belts with low-friction backing on high-load applications.
20. T-rails can be shorted out partially to reduce loads by placing mild steel on the bottom of the rail, plate rails can not be shorted out.
21. Magnetic rails significantly increase belt loading compared to non-magnetic conveyors. A stronger belt and/or a larger diameter drive pulley may be required.

Installation Information for Can Handling

Note – Can sizes are presented as a three digit number by a three digit number. The first three-digit number is the diameter, the second is the can height. Each three-digit number is a repetition of the cans actual measurements. The first two digits represent the full inches of the can’s size and the third digit represents the fractional remainder of the can’s size in 1/16 of an inch increments.

Mounting Dimensions for Magnetic “T” Rails and Pulleys

Mounting Dimensions for Plate Rails & Pulleys