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POWERING GLOBAL INDUSTRY
DRIVE BELT NOMENCLATURE
DRIVE BELT
NOMENCLATURE
V-Belt
Numbered
Part Outside
Type
By Number Length
Fractional HP
Effective Length
4L500 =
50”
Classical Multi-Plus Standard Length Designation A48
=
50”
Fractional HP
Effective Length
5L500 =
50”
Classical Multi-Plus Standard Length Designation B47
=
50”
Classical Cogged
Standard Length Designation
AX48
=
50”
Narrow Deep Wedge Effective Length
5VX500 =
50”
LENGTH
LIGHT DUTY
Fractional HP
WIDTH/HEIGHT
CLASSICAL
HEAVY DUTY
Jason Multi-Plus® - UniMatch®
0.50”
0.31”
0.88”
0.75”
1.50”
1.00”
MOLDED COGGED
Cogged allows smaller pulleys. Better
heat dissipation.
0.50”
0.31”
0.66”
0.41”
0.88”
0.53”
WEDGE COGGED
Same properties of Wedge. Cogged
for greater flexibility and heat
dissipation. Raw Edge Sidewalls (no
fabric cover) prevent slippage.
0.38”
0.31”
0.63”
0.53”
1.00”
0.88”
BELT SIZE DIMENSIONS
IN THIS PUBLICATION
ARE NOMINAL.
1.
Cover - Rubberized Fabric
l
Flexible, non-cracking, smooth running for long life
l
Oil, heat & abrasion resistant
2.
Load Section - Polyester Cords
l
Positioned to take tension in both FHP & Classical
applications
l
Chemically treated, then fused prevents separation
3.
Load Carrying Section
l
Special compound to resist stretch & fatigue
4.
Compression Section
l
Elastomer resists compression fatigue
l
Dissipates internal heat build-up
l
Provides firm lateral pressure against groove
sidewall and distributes the load to cords
1
2
3
4
CONSTRUCTION
3VX
5VX
WEDGE
Narrower, deeper profile with higher
power capability than classical v-belt.
Allows for smaller, more compact
drives.
3V
0.38”
0.31”
5V
0.63”
0.53”
8V
AX
BX
CX
NOTE: Length information values in the above table are approximate. Industry standards require that to properly measure a
belt, it must be installed on a fixture with two pulleys of prescribed dimension and tensioned to a specific value. Accurate
values cannot be measured by hand on a free length of belt.
A
40
°
0.66”
0.41”
B
C
0.53”
1.25”
D
E
0.38”
0.22”
3L
0.50”
4L
5L
0.31”
0.41”
0.66”
40
°
40
°
40
°
40
°
40
°
40
°
40
°
40
°
40
°
40
°
38
°
38
°
38
°
38
°
38
°
WRAPPED V-BELT
RAW EDGE V-BELT
1.
Top Fabric
l
Provides heat and oil resistance
2.
Load Section - Polyester Cords
l
Provides uniform distribution of load
3.
Raw Edge Sidewalls
l
Increases grip
l
Improved efficiency through reduced slippage
4.
Compression Section
l
Elastomer resists compression fatigue
l
Dissipates internal heat build-up
l
Provides firm lateral pressure against groove
sidewall and distributes the load to cords
5.
Precision Molded Cogs
l
Provide flexibility and aid in heat dissipation
1
4
5
3
2