This information is intended for you, the design engineer.
Herein you will find application examples and design
guidelines for creating your own timing belts with profiles.
Timing Belts can provide exceptionally accurate
synchronized conveying of products. Ideal for assembly,
packaging, inserting and other automation applications.
Timing belts are available in any length and can be specified in one tooth increments. F. N. Sheppard timing belts have been used extensively
as reliable profiled timing belts. The requirements in automation and material handling are diverse. Often, the designer is challenged to come up with innovative concepts to solve differing requirements depending on the product to be conveyed and function to be solved. We offer an extensive line of synchronous belts and a wide selection of stock profiles. It allows for innovative design solutions for dividing, stepping and positioning. When you are confronted with a drive or conveying problem, just call on us. A quick phone call can allow us to assist you in finding the desired solution or we can provide you with our suggestions.
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Profile Belts
Profiles are commonly referred to as lugs,
cleats, pockets and attachments. Profiles are
transverse raised sections on the outer
surface of a belt used to hold, stabilize,
position or transport a product. Profiles are
available in many compounds and are
applied in various ways. Various ways
include: molding, thermal-welding, bonding
and machining. Hundreds of profile designs
are available from F. N. Sheppard’s mold
inventory. Our Applications Engineers can
work with you to design any profile to meet
your specific requirements. Tooling charges
are minimal for most new customized
designs. Drawings of some of the profiles
are shown in this catalog. Profiles allow for
precise indexing with accurate placement on
synchronous base belts. This synchronization
is not attainable with flat belts. |
Position and Thickness of Profiles
The most important consideration while dimensioning a profile is the size of the base of the profile, (the “foot” of the profile), and the
position of the profile on the belt.
The profile thickness can effect the flexibility of the belt and can determine the minimum allowable pulley diameter. The flexibility of
the belt can be maximized, however, by positioning the profile directly over the tooth of the belt. As the thickness of the foot of the
profile increases, the minimum pulley diameter must be increased according to the table.
Urethane Welded Profile
The strength of the profile is affected by the type and direction of the force applied
to it. Under high loads, the failure mode will normally be either bending and
distortion of the profile and belt, or in some cases, the urethane may actually tear.
With a load introduced against the profile at a point 1/4” above the belt surface,
the strength of the profile is 2,500 lbs. per square inch of welded foot area, or
1724 N/cm2. Our Technical Department would like to assist you with
determination of profile strength.
Profile Strength
There are many variables to consider when figuring the strength of the profile. Variables include; method of
attachment, compound of profile, belt construction, type of force, and direction of force. F. N. Sheppard has
the largest selection of belts and profiles available and many methods of attaching profiles. Your application
and other variables are the major factor for considering what method of attachment to use.
Profiled Belts
