ConveyXonic^TM Poly-V^® Conveyor Belts

Dura-Belt is a master distributor for Hutchison’s new ConveyXonic High Tension Poly-V powered roller belts (also called multi-rib belts or V-ribbed belts). These truly endless, nylon reinforced, rubber belts can greatly extend the capabilities of powered roller conveyors. ConveyXonic long-life, low maintenance belts provide the following features:

1. Moves extremely heavy loads, including pallets weighing up to 2400 lbs (1100 kg), or boxes weighing up to 250 lbs per roller (113 kg/roller). Driving force can be easily magnified by adding more ribs.

2. Moves loads smoothly over a wide speed range -- up to 800 feet per minute (4 m/s).

3. Allows one motorized roller to power up to 20 rollers with high efficiency, i.e., very little reduction in rpm or torque. This means that each slave roller can provide nearly the same driving force as the motorized roller.

4. One powered roller can do the work of two or more powered rollers, providing equipment cost savings and energy reduction savings. (One user reported moving 50 rollers with one motorized roller -- 25 on each side.)

5. Nylon reinforcements in ConveyXonic belts are slightly elastic. This allows them to stretch enough so that the belts will perform well over the typical center distance tolerance range (+/- 1/16”) found on most conveyor frames.

6. Special conveyor rollers with poly-V pulley endcaps are available from Interroll and Rollex. These plastic endcaps reduce standard 1.9” roller ratings to 70 lbs per roller (31 kg/roller), which limits box weight to approximately 700 lbs (317 kg), but that is still more than 3 times greater driving capacity than is provided by elastic round belts.

7. Standard conveyor rollers can be converted to poly-v rollers with Dura-Belt’s Flexible, Adjustable, Poly-V, Snap-on pulleys (FAPS pulleys). Rollers with FAPS pulleys can move up to 240 lbs/roller (109 kg/roller), or boxes weighting up to 2400 lbs (1090 kg). Available with or without an adjustment slit. This slit allows the pulley to expand or contract, thereby fitting slightly different roller diameters -- from 1.71" to 1.97" (43.6mm to 50mm). The pulley is affixed to the rollers by two-sided tape, contact cement or epoxy. Holes for set screws are also provided. Belt tension actually tightens the pulley's grip. The pulley's two tabs ensure precise alignment with roller endcaps.

8. Pulley grooves on adjacent rollers must be aligned within one degree. Otherwise, the belts will abrade. Our alignment washers take up the slack between frames, forcing standard spring-loaded rollers into alignment. Rollers that are screwed to the frame (like those provided by Interroll) do not need alignment washers.

9. Two and three ribbed belts will work on curves down to a minimum radius of 31.5" (800 mm), although minor belt dusting occurs.

10. Designed to work even in dusty environments, the tips of the belt’s Poly-v ribs are truncated so they do not extend to the bottom of the pulley’s grooves. This provides an open space where dust can accumulate. The belt’s nylon reinforcements produce enough tension to force dust into this slot. As the pulley rotates, the dust usually falls out of the pulley. Nevertheless, if there is any doubt about the operating environment, we recommend testing a section of the conveyor in the environment where it will be used.

11. An installation tool greatly facilitates assembly of Poly-V (multi-rib, V-ribbed) belts. The force required is about 25 lbs (11kg) per rib. See Speedy Roller Installer

ConveyXonic Poly-V Conveyor Belts

• 2-ribs moves boxes up to 110 lbs (50 kg)
• 3-ribs moves boxes up to 660 lbs (300 kg)
• 4-ribs moves boxes up to 1100 lbs (500 kg)
• 5-ribs moves boxes up to 1540 lbs (700 kg)
• 6-ribs moves boxes up to 2000 lbs (900 kg)
• 7-ribs moves boxes up to 2400 lbs (1100 kg)

Adjustable Poly-V Snap-on Pulley
for multi-rib belts

(Patent Pending)

TKF Belt Guard Safety shield

(yellow) covers Poly-V belts

Warning:  Protective guards or safety shields should be installed over poly-v belts wherever people may come in contact with them. These V-ribbed belts do not stretch enough to accommodate objects caught underneath, and the pulley's sharp ribs provide nip points that could severely damage fingers or pull hair, jewelry or clothing caught in them. Low horsepower (24 volt) motors do not mitigate the need for shields, as the force per unit area on a rib's edge is very large. Moreover, the momentum of heavy boxes would make the rollers difficult to stop by hand. Shields can be purchased from TKF, Inc, who makes yellow protective guards as shown on their 24 volt PosiGrip timing belt conveyors (above).