Conveyor drive band joining guide

This guide will help you train on the correct method for joining drive bands on site or directly on conveyors. Dyno offers a range of standard drive bands. However, we understand that some breakdowns require immediate attention, or joining the bands directly on the conveyor is more practical than disassembling it.

What are drive bands?

Drive bands are typically made from urethane and are used to power rollers from a power source – mostly either a lineshaft or a motor-driven roller (MDR). This is a safe and cost-effective way to power a roller conveyor and can be very reliable if maintained correctly (refer to our ‘Tranzband Maintenance & Repair Guide’). A variety of strengths, colours, sizes and other properties exist, so consult the Dyno Conveyors team to determine the best option for your application and conveyor type. You can contact them via:

www.dyno-conveyors.com
sales@dyno.co.nz
+64 (0)3 216 1440

or use our online contact form.

Drive band joining instructions

1. Cut the band with a sharp knife or special cutters. Ensure the cut is as square as possible.
   If repairing a Tranzband/lineshaft conveyor without removing the drive shaft, it is useful to cut a band off the conveyor and use it as a guide for the cut length (provided the band is not old and stretched).
2. Clamp the band in the Dyno DB Welding Clamp with a maximum of the band’s diameter protruding inside the clamp on each side. For example, a 5 mm diameter band should protrude a maximum of 5 mm as per image below.
   

3. Ensure the band is not twisted as per image below.

   

4. Fully tighten the screws on the Dyno DB Welding Clamp.

5. Preheat the welding tool for at least 10 minutes.

6. Insert the preheated welding tool between the ends of the bands, ensuring it is perpendicular to the band as per image below.

   
7. Gently squeeze the ends of the bands onto the welding tool using the outside of the Dyno DB Welding Clamp (Warning: the welding tool is HOT! Do not touch it).
   Observe the band as it melts and begins to curl. Make sure the entire diameter of the band has curled over – this ensures the complete face of the band has melted and will weld.

8. Give a quick, firm squeeze to expel any air and then open the Dyno DB Welding Clamp.

9. Remove the heating tool and quickly close the Dyno DB Welding Clamp. Tighten the lock nut with some pressure to hold the ends of the band together firmly while the weld cures.
   We suggest you practise steps 6-9 on waste material first to learn the technique and test the welds.

10. IMPORTANT! Leave the band clamped in the Dyno DB Welding Clamp for a minimum of 5 minutes (use a timer) to ensure it is fully cooled and the joint has cured. Skipping this step (or reducing the time) will compromise the weld strength and may lead to premature failure.

11. Loosen the nuts and remove the band from the Dyno DB Welding Clamp.

12. Trim any excess urethane from around the weld using the provided clippers as per image below.

    

NOTE

If bands are failing around the weld, double-check that you have followed the instructions above correctly. If other parts of the band are failing (developing flat spots, stretching, etc.), please consult our Tranzband Maintenance & Repair Guide.

You may also be interested in these extra resources:

• Lineshaft BDR Drive Bands
• Grooved Rollers for BDR Conveyor

And as always, if you need assistance, our expert team is always ready to help. Please contact us at enquiry@dyno.co.nz or call 0800 144 044.