78
2015
Power Transmission Products
V-Belt
Cogged, raw-edge construction vs.
envelope construction
Continental ContiTech provide a complete offering of cogged,
raw-edge belts in Narrow, Classical and FHP styles. Designated
3
VX, 5VX, AX, BX, CX, 4L and 5L, cogged, raw-edge V-belts
have higher capacity and efficiency and they use smaller
sheaves than traditional envelope (wrapped) belts. These belts
have a higher coefficient of friction and are more aggressive,
which makes them a very efficient belt for power transmission.
Unlike conventional fabric-covered V-belts, raw-edge belts have
no cover. Thus, the cross-sectional area normally occupied by
the cover is used for more load-carrying cord. Cogs on the
inner surface of the belt increase air flow to enhance cooler
running. They also increase flexibility, allowing the belt to
operate with smaller sheaves. With Classical V-belts, certain
under-designed or problem drives can be upgraded to
“
satisfactory” by substituting Classical cogged belts for
Classical envelope belts without replacing sheaves.
Because of their higher coefficient of friction, cogged belts tend
to be more sensitive to alignment. While envelope belts can
tolerate some misalignment, cogged belts are more likely to
turn over under the same conditions. Cogged belts should not
be used in clutching drives, drives with severe shock loads and
drives that have changing center distances, such as shaker
screens. In these applications, the aggressive nature and
flexibility of cogged belts can cause vibration, belt turnover
and belt breakage. Cogged belts should also be avoided in
drives that require slippage during frequent stops and starts.
Overview
Synchronous
Banded
V-Belt
Bushing Hardware
Specialty
Automotive & Truck
General Information