Elastic, Stretchy Flat Belts
(Belting) moves heavy loads
- Elastic stretchy urethane.
- Thicknesses: .031", .050" .063", .4", .125", .313" (.8mm, 1.3mm, 2.4mm, 3.2mm, 8mm)
- For .032" thickness, any width up to 12" (305mm).
- For .050" and .062" thickness, any width up to 34.5" (876mm).
- For .094" and .125" thickness, any width up to 18" (457mm).
- Our .313" (8mm) thick belts are .401" (10.2mm) and .625" (16mm) wide and have round edges or sides.
- Any length above 3.5" (89mm)
- Colors: clear .031" & .063" (.8mm & 3.2mm), black .050" &.063" (1.3mm & 1.6mm), and orange .094" & .125" (2.4mm & 3.2mm)
- Durometers: 78A, 83A, 85A, 87A, 92A, 95A
- Available in standard or anti-static.
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Elastic Stretchy Flat Belting
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Tracking Sleeves
- Crowns rollers -- prevents flat belts from walking.
- Fits tightly under flat belt -- see red sleeve in picture.
- Usually only one is installed on drive roller.
- Easily installed with our RAVE technique.
- Stays put. Will not move.
- Available in several different sizes:
- .031" thick 92A for belts up to 1.5" (38mm) wide
- .062" thick 83A for belts up to 34.5" (876mm) wide
- Sleeve width from 20% to 50% of flat belt width
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Red Tracking Sleeve under Flat Belt
Note: The actual sleeves are clear not red.
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Wide Flat Belts on Rollers
Wide elastic belts can move heavier loads. Flat belts have much more surface contact area than round belts so slipping is virtually eliminated. Our flat belts do not need belt tensioners or V-guides. Low bending loses makes them extremely energy efficient. Lets you use low powered, inexpensive MDRs to move heavy boxes on long zones. Powered roller should be located on downstream end (see red end caps in picture). Available in any width up to 34.5" (876mm) in 1/32" and 1/16" (.8mm and 1.6mm) thicknesses. Any width up to 18" wide (457mm) in orange 3/32" and 1/8" (2.4mm and 3.2mm) thicknesses. |
Flat belts move heavier loads
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Flat Belts Increase Motorized
Roller Zone Length
Round belts usually limit powered motorized roller zone length because the belt's thin area of roller contact limits the amount of torque that can be transferred before round belts begin to slip. Wide urethane flat belts do not have this limitation, so slipping is virtually eliminated.
Therefore, zone lengths of 20 or more rollers are possible. In fact, except for extremely heavy boxes, the only thing that limits zone length is the torque of the motorized roller. Since our wide flat belts are elastic, they do not need expensive belt tensioners or V-guides, so they can be retrofitted onto conveyors without changing rollers. Our flat belts are more economical than our Poly-V® multi-ribbed belts because they do not need grooved rollers. However, Poly-V belts are better at moving extremely heavy loads, even pallets, at very high speeds. For more information click here. |
Flat belts on long motorized roller zones
(20 rollers or more)
Due to larger mass, wide flat belts are stretched much less than round belts. For example, our 1/16" (1.6mm) thick x 4" (100mm) wide belts are typically stretched 3.3%. Please use our belt tension calculator to determine acceptable tension and stretch for your width and thickness |
V-Guides on Flat belts
As an alternative to crowned rollers and tracking sleeves, Dura-Belt offers V-guides fused to the bottom of our elastic flat belts. They provide very precise belt tracking and eliminate the tiny bumps in the upstream and downstream rollers produced by tracking sleeves. They may also work better in oily or greasy environments where flat belts experience side forces that may dislodge tracking sleeves. Our K6 size V-Guides are available in 80A and 60A durometer, which is softer than our flat belts, so they bend easily around rollers and do not interfere with the flat belt stretch or cause puckering. They fit nicely into standard round grooves in 1.9" or 50mm rollers and can be located anywhere along the inside of flat belts. Please provide a drawing showing exactly where you want them located. |
V-Guides on Flat Belts
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Flat Belts on Inclines/Declines
16 Degrees. New matte surfaces on our elastic flat belts shun dust and give them a higher coefficient of friction (COF), even in dusty environments, so they can move boxes and paper bubble envelopes on inclines and declines of up to 16 degrees*, 33% greater than our old version. These elastic belts move heavier boxes than most other stretchy belts and require no expensive belt tensioners or V-guides. Probably the lowest cost wide flat belts, seventeen miles of these new inexpensive belts are in major distribution warehouses and have been moving 60 lb. (27 kg) boxes up 16° inclines for over four years. They probably can move heavier boxes on the same incline or decline, but customers would need to test it first. Proven quality, the old version has been serving customers for over 20 years.
45 degrees. With 7/32" tall orange cleats fused to our belts, boxes can move on inclines and declines of up to 45° as in the adjacent picture.
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New surfaces on our stretchy flat belts
move boxes up 16° inclines, 33% higher
Flat belts with orange cleats move boxes
on inclines/declines of up to 45 degrees
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Flat belts much wider than long
(Short, wide flat belting)
Some flat belt experts will tell you that flat belts need to be longer than they are wide in order to track properly (not walk sideways). Dura-Belt's elastic flat belts are the exception. Our flat belting will track regardless of the length to width ratio. Adjacent is one that is 34.5" wide on 9" centers.
The shortest wide flat belts we can make are:
For material types, thicknesses, weights, durometers
and other data, click here: Flat Belt Data Sheet
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Short, wide flat belting
Urethane has a high coefficient of friction on metal and UHMW slider beds, so the resultant friction, when moving heavy loads, can overheat our belts, cause them to lose their elasticity and fail prematurely. |
*Note that different container surfaces may behave differently on any flat belt surface. For example, our matte side can convey boxes and paper bubble envelopes on inclines/declines up to 16°, but some types of plastic envelopes may slip. Therefore, you should test your containers carrying different weights on one of our inclined/declined flat belts before purchasing large quantities.
