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2015 Power Transmission Products
General Information
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The ARPM Engineering Standards IP-20 & IP-22 sets up limits
for matching Classical and Wedge V-belts having polyester cord
based on their lengths and cross-sections. These standards
have been developed to ensure that belts that meet the ARPM
tolerances will run together on multiple-belt drives and
effectively share the load that is being transmitted.
Many Continental ContiTech branded V-belts are produced
to meet these standards under the Matchmaker® Matching
System. Multiple V-belts will still have different lengths under
this system; however, the elongation of the polyester reinforced
V-belts will allow the belt lengths to normalize once the belts
are tensioned. The Matchmaker® System only applies to V-belts
with polyester cord; V-belts with aramid cord do not fall into
this program. Sets of multiple aramid reinforced V-belts
have to be specially ordered to ensure they are within an
acceptable length range to each other or they can be ordered
as one banded HY-T® Torque Team Plus® belt.
As an example, a 5V710 belt has a Matchmaker® matching
limit of 0.30 inches. This means a 5V710 that measures 71.150
inches is considered matched to one that measures 70.850
inches because the difference in belt length between the two
is 71.150 inches – 70.850 inches = 0.30 inches, which is within
the 0.30 inches matching limit that is called out for in the
Matchmaker® System.
As a final note, the best way to optimize the Matchmaker®
program is to utilize the “first in-first out” method of
inventory control. Every V-belt manufacturer that produces
polyester-corded belts bases their matching principles on the
assumption that their inventory is constantly turning over. This
is because an inherent property of polyester is that it will shrink
over time. Thus, a belt built two years ago will not measure
the same as it did when it was originally produced. How much
and how fast the polyester shrinks is largely dependent on the
environmental conditions that the belt is exposed to during
storage. As it is difficult to easily monitor the environment of
certain storage spaces, it becomes apparent why it is important
to make certain that the oldest inventory is the first to be used.
With these procedures in place, the Matchmaker® System will
continue to serve your multiple-belt drive needs.
Continental ContiTech
Matchmaker
®
System
Product Length (in.)
Range
0 to 50 – 63⁄64
15mm (.5905 in.)
51 to 80 – 63⁄64
20mm (.7874 in.)
81 to 100 – 63⁄64
25mm (.9842 in.)
101 to 140 – 63⁄64
30mm (1.181 in.)
141 to 300 – 63⁄64
40mm (1.575 in.)
301 to 400 – 63⁄64
50mm (1.968 in.)
401 to 500
61mm (2.400 in.)
Source: ARPM 1P-22, 2007
Engineering Standard “Envelope Narrow V-Belts and Sheaves”
V-Belt Permissible Deviation From Nominal Length –
Envelope Narrow Profile
(Industry Standard)
Inventory
Classical Lengths
(in.)
Wedge Lengths
(in.)
Wedge TLP™ (3VT, 5VT, 8VT) 0-60 0.15 0-63
0.15
HY-T® Wedge (3VX, 3V, 5VX,
5V & 8V)
61-144
0.30 64-150
0.30
HY-T® Plus (A, B, C & D)
145-240 0.45 151-250
0.45
Torque-Flex® (AX, BX & CX)
241-360 0.60 251-375
0.60
HY-T® Torque Team® (HY-T &
HY-T Wedge)
361-480 0.75 376 & longer 0.75
Torque Team® Laminated
481 &
longer
0.90
Meets ARPM Engineering Standards IP-22 for Narrow V-Belts, 2007
Matchmaker® Belts
General Information
Automotive & Truck
Specialty
Bushing Hardware
V-Belt
Banded
Synchronous
Overview