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Applications:Base Belts:Related Links: |
Solid (Dense) Rubber Covered Belting
Most of the belts with solid (dense) rubber extra padding that Stiles supplies are mandrell built with seamless covers.
We carry a large stock of metric and standard timing belts and flat belts in sleeves and precut sizes. Our stock addresses the requirements on many of the packaging machines with which we are familiar. Orders for these belts are either shipped from stock or slit to size and machined to specification.
Belts with seamless covers are preferred because they are bi-directional, and do not have a surface splice which can become a failure point. Bonding to the base belt is generally more consistent and stronger. Unfortunately not all covered belts can be made with seamless covers either because of cost restraints, delivery requirements, availability of materials, or compatibility between the base belt and the cover stock.
Stiles has been adding spliced belt covers onto base belts for decades.
Most common of the solid rubbers used are black 20A durometer Neoprene and the red 40A durometer Linatex®. We have a large inventory of materials and thicknesses with which to build the covered belts.
Although we have concentrated on the packaging industry, customers in the automotive industry, metal working industry, extrusion industry and varied other industries have come to Stiles to provide covered belt solutions for sometimes unique applications. Specialty belting from Stiles is standard on many new machines in the packaging industry. We manufacture new and resurfaced belts for labeling machines with cellular and solid (dense) rubber . Your feed and discharge belts, roll belts, and hold down belts are items that may have originated at Stiles. We stock materials from around the world to make our belts, and other parts from.
We can add bevels, contours and release or protective coatings.
Layered construction can provide a thin layer of outer contact material bonded to a different base material. The specified base material may provide the desired deflection or cushioning, but may not give the right amount of grip, wear out to quickly, or not be resistant to other elements, such as chemicals in the operating environment. A different wear surface material can often address those other concerns.
New Belts
Provide us with as much information as possible about the belt. If available give the type of belt, belt number and material. For belting which has to be spliced endless, laced, or prepared endless, make sure to let us know whether the length is the cut length, inside length around the pulleys, or the outside length. Using length measured on the machine around the outside of covered belts is discouraged. Provide original equipment cross reference numbers if possible. Application information is very important.
Recovered Belts
Generally it is not worth resurfacing solid rubber covered belts. Before disposing of your old belt, send it to Stiles to duplicate.
Running Direction
If a belt has a spliced cover and is intended to be bi-directional, the splice selection is critical since some splices are directional by design. Custom insets and profiles should be referenced according to the running direction. For seamless covers this direction reference is not relevant for most simple profiles and steps.
Material Selection
This is another situation where application information is helpful. We can send sample cards which will aid material selection. Please review our material link. Note that if a material is discontinued we will advise on a substitute solution.
Storage And Care Of Belts
When belts are first received they should be removed immediately from the shipping container, inspected, and stored in a relaxed state free of localized stress points which can cause some materials to dent or crease.
Store away from extreme heat or direct light. To extend inventory shelf life it is suggested to protect belts in black garbage bags if "UV" resistant bags are not available.
If belts are to be hung, use a large diameter tube to hang the belts from to avoid the belt taking a set. This is not as much of a problem with solid covered belts as with cellular covered belts.
Cleaning
It should be noted that solvents used for cleaning belts can cause adverse reaction to the belt covers such as drying out the material and breaking down any bonded seams.
See Belt Care link below.