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A31 V-Belt - A-Section 33" A31 Belt (4L330)
A31 V-Belt A-section A31 belt
A31 V-Belt A-section A31 belt
 
Note: Premium Quality V-Belt
Note: Quantity Discounts Available


Product Code: A31-V-BELT
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Description Technical Specs
 

Strengthen your belt-drive assembly with a 4L330 V-belt from USA Roller Chain. These belts come with high-quality materials that stand out from the crowd. Trust in the high-strength polyester used for the cord and cotton-poly blend for the cover. The A31 V-belt has a 33-inch outside length with a 0.41-inch thickness. This A31 belt will comfortably fit into any belt drive without any slippage.

Never worry about harsh environments that might contain excessive heat or natural oils. The 4L330 design is meant to take these on with resilience every time. Let USA Roller Chain know if you have a question about the 4L330 belt. It's a high-performance product without the expensive price. In addition, you'll always receive a belt that meets or exceeds ARPM standards. USA Roller Chain doesn't tolerate questionable quality. We bring natural and styrene-butadiene rubber together for a belt meant to last in the toughest conditions.


A31 V-Belt Construction:
  • Cover - High-quality cotton/ polyester blend
  • Compound - Natural rubber/ styrene-butadiene rubber (SBR)
  • Cord - High-strength polyester
Note: We also have Cogged V-Belts which include longer operational life, cooler running, and around a 2% higher efficiency raring than a standard v-belt.

A31 V-Belt Dimensions

  • Belt Size: A31
  • Top Width: 0.66"
  • Thickness: 0.41"
  • Angel: 40 Degrees
  • Outside Length: 33"
  • Weight: 0.20 LBS
  • Interchanges: A-31, 4L330

A31 V-Belt Pulleys

Our A-section v-belt pulleys are made to ARPM standards, are extreme performance parts, and boast premium features at budget-friendly prices. The charts below show the standard pulley sizes, for additional or custom options, please contact us and we will be happy to assist you.

AK V-Belt Pulleys:
Size Outside Diameter Pitch Diameter (4L/A) Pitch Diameter (3L) Type Dimension (F) Dimension (L) Dimension (P) Dimension (C) Pulley Weight
AK17 1.75" 1.50" 1.16" 1 21/32" 15/16" 7/16" 5/32" 0.2 LBS
AK20 2.00" 1.80" 1.46" 1 21/32" 15/16" 7/16" 5/32" 0.3 LBS
AK21 2.10" 1.90" 1.56" 1 21/32" 15/16" 7/16" 5/32" 0.4 LBS
AK22 2.20" 2.00" 1.66" 1 21/32" 15/16" 7/16" 5/32" 0.5 LBS
AK23 2.30" 2.10" 1.76" 1 21/32" 15/16" 7/16" 5/32" 0.5 LBS
AK25 2.50" 2.30" 1.96" 2 21/32" 15/16" 7/16" 5/32" 0.5 LBS
AK26 2.60" 2.40" 2.06" 2 21/32" 15/16" 7/16" 5/32" 0.5 LBS
AK27 2.70" 2.50" 2.16" 2 21/32" 15/16" 7/16" 5/32" 0.6 LBS
AK28 2.80" 2.60" 2.26" 2 21/32" 15/16" 7/16" 5/32" 0.7 LBS
AK30 3.05" 2.80" 2.46" 2 21/32" 15/16" 7/16" 5/32" 0.7 LBS
AK32 3.25" 3.00" 2.66" 2 21/32" 15/16" 7/16" 5/32" 0.7 LBS
AK34 3.45" 3.20" 2.86" 2 21/32" 15/16" 7/16" 5/32" 0.9 LBS
AK39 3.75" 3.50" 3.16" 2 3/4" 1-5/32" 15/32" 1/16" 1.4 LBS
AK41 3.95" 3.70" 3.36" 2 3/4" 1-5/32" 15/32" 1/16" 1.5 LBS
AK44 4.25" 4.00" 3.66" 3 3/4" 1-5/32" 15/32" 1/16" 1.5 LBS
AK46 4.45" 4.20" 3.86" 3 3/4" 1-5/32" 15/32" 1/16" 1.5 LBS
AK49 4.75" 4.50" 4.16" 3 3/4" 1-5/32" 15/32" 1/16" 1.7 LBS
AK51 4.95" 4.70" 4.36" 3 3/4" 1-5/32" 15/32" 1/16" 1.7 LBS
AK54 5.25" 5.00" 4.66" 3 3/4" 1-5/32" 15/32" 1/16" 1.8 LBS
AK56 5.45" 5.20" 4.86" 3 3/4" 1-5/32" 15/32" 1/16" 1.9 LBS
AK59 5.75" 5.50" 5.16" 3 3/4" 1-5/32" 15/32" 1/16" 2.0 LBS
AK61 5.95" 5.70" 5.36" 3 3/4" 1-5/32" 15/32" 1/16" 2.1 LBS
AK64 6.25" 6.00" 5.66" 3 3/4" 1-5/32" 15/32" 1/16" 2.2 LBS
AK66 6.45" 6.20" 5.86" 3 3/4" 1-5/32" 15/32" 1/16" 2.3 LBS
AK69 6.75" 6.50" 6.16" 3 3/4" 1-15/32" 23/32" -- 3.5 LBS
AK71 6.95" 6.70" 6.36" 3 3/4" 1-15/32" 23/32" -- 3.8 LBS
AK74 7.25" 7.00" 6.66" 3 3/4" 1-15/32" 23/32" -- 3.4 LBS
AK79 7.75" 7.50" 7.16" 3 3/4" 1-15/32" 23/32" -- 4.0 LBS
AK84 8.25" 8.00" 7.66" 3 3/4" 1-15/32" 23/32" -- 3.8 LBS
AK89 8.75" 8.50" 8.16" 3 3/4" 1-15/32" 23/32" -- 4.3 LBS
AK94 9.25" 9.00" 8.68" 3 3/4" 1-15/32" 23/32" -- 4.5 LBS
AK99 9.75" 9.50" 9.16" 3 3/4" 1-15/32" 23/32" -- 5.3 LBS
AK104 10.25" 10.00" 9.66" 3 3/4" 1-15/32" 23/32" -- 5.1 LBS
AK109 10.75" 10.50" 10.16" 3 3/4" 1-15/32" 23/32" -- 5.8 LBS
AK114 11.25" 11.00" 10.66" 3 3/4" 1-15/32" 23/32" -- 5.6 LBS
AK124 12.25" 12.00" 11.66" 3 3/4" 1-15/32" 23/32" -- 6.5 LBS
AK134 13.25" 13.00" 12.66" 3 3/4" 1-15/32" 23/32" -- 7.5 LBS
AK144 14.25" 14.00" 13.66" 3 3/4" 1-15/32" 23/32" -- 8.5 LBS
AK154 15.25" 15.00" 14.66" 3 3/4" 1-15/32" 23/32" -- 9.8 LBS
AK184 18.25" 18.00" 17.66" 3 3/4" 1-15/32" 23/32" -- 12.1 LBS
2AK V-Belt Pulleys:
Size Outside Diameter Pitch Diameter (4L/A) Pitch Diameter (3L) Type Dimension (F) Dimension (L) Dimension (P) Dimension (C) Pulley Weight
2AK20 2.00" 1.80" 1.46" 1 1-3/8" 1-21/32" 15/32" 3/16" 0.8 LBS
2AK21 2.15" 1.90" 1.56" 1 1-3/8" 1-21/32" 15/32" 3/16" 0.9 LBS
2AK22 2.25" 2.00" 1.66" 1 1-3/8" 1-21/32" 15/32" 3/16" 0.9 LBS
2AK23 2.35" 2.10" 1.76" 1 1-3/8" 1-21/32" 15/32" 3/16" 1.1 LBS
2AK25 2.55" 2.30" 1.96" 1 1-3/8" 1-21/32" 15/32" 3/16" 1.3 LBS
2AK26 2.65" 2.40" 2.06" 1 1-3/8" 1-21/32" 15/32" 3/16" 1.4 LBS
2AK27 2.75" 2.50" 2.16" 1 1-3/8" 1-21/32" 15/32" 3/16" 1.5 LBS
2AK28 2.85" 2.60" 2.26" 1 1-3/8" 1-21/32" 15/32" 3/16" 1.8 LBS
2AK30 3.05" 2.80" 2.46" 1 1-3/8" 1-21/32" 15/32" 3/16" 1.8 LBS
2AK32 3.25" 3.00" 2.66" 1 1-3/8" 1-21/32" 15/32" 3/16" 2.1 LBS
2AK34 3.45" 3.20" 2.86" 1 1-3/8" 1-21/32" 15/32" 3/16" 2.3 LBS
2AK39 3.75" 3.50" 3.16" 2 1-3/8" 1-11/32" 15/32" 1/2" 2.6 LBS
2AK41 3.95" 3.70" 3.36" 2 1-3/8" 1-11/32" 15/32" 1/2" 2.9 LBS
2AK44 4.25" 4.00" 3.66" 2 1-3/8" 1-11/32" 15/32" 1/2" 3.0 LBS
2AK46 4.45" 4.20" 3.86" 2 1-3/8" 1-11/32" 15/32" 1/2" 3.1 LBS
2AK49 4.75" 4.50" 4.16" 2 1-3/8" 1-11/32" 15/32" 1/2" 3.6 LBS
2AK51 4.95" 4.70" 4.36" 2 1-3/8" 1-11/32" 15/32" 1/2" 3.8 LBS
2AK54 5.25" 5.00" 4.66" 2 1-3/8" 1-11/32" 15/32" 1/2" 3.3 LBS
2AK56 5.45" 5.20" 4.86" 2 1-3/8" 1-11/32" 15/32" 1/2" 3.4 LBS
2AK59 5.75 " 5.50" 5.16" 2 1-3/8" 1-11/32" 15/32" 1/2" 3.5 LBS
2AK61 5.95" 5.70" 5.36" 3 1-3/8" 1-11/32" 15/32" 1/2" 3.6 LBS
2AK64 6.25" 6.00" 5.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 4.8 LBS
2AK74 7.25" 7.00" 6.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 5.6 LBS
2AK84 8.25" 8.00" 7.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 6.4 LBS
2AK94 9.25" 9.00" 8.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 7.3 LBS
2AK104 10.25" 10.00" 9.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 8.1 LBS
2AK114 11.25" 11.00" 10.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 9.0 LBS
2AK124 12.25" 12.00" 11.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 9.8 LBS
2AK134 13.25" 13.00" 12.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 12.3 LBS
2AK144 14.25" 14.00" 13.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 13.9 LBS
2AK154 15.25" 15.00" 14.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 14.3 LBS
2AK184 18.25" 18.00" 17.66" 3 1-3/8" 1-19/32" 11/32" 1/8" 17.4 LBS
AKH V-Belt Pulleys:
Size Outside Diameter Pitch Diameter (4L/A) Pitch Diameter (3L) Type Dimension (O.L.) Dimension (F) Dimension (L) Dimension (P) Dimension (C) Dimension (X) Dimension (G) Dimension (E) Pulley Weight (LBS)
AK30H 3.05" 2.80" 2.46" 1 1-13/16" 3/4" 1-1/4" 7/8" -- 1-3/16" 7/16" 3/16" 0.2
AK32H 3.25" 3.00" 2.66" 1 1-13/16" 3/4" 1-1/4" 7/8" -- 1-3/16" 7/16" 3/16" 0.3
AK34H 3.45" 3.20" 2.86" 2 1-1/2" 3/4" 1-1/4" 9/16" -- 7/8" 7/16" 3/16" 0.4
AK39H 3.75" 3.50" 3.16" 2 1-1/2" 3/4" 1-1/4" 9/16" -- 7/8" 7/16" 3/16" 0.5
AK41H 3.95" 3.70" 3.36" 2 1-1/2" 3/4" 1-1/4" 9/16" -- 7/8" 7/16" 3/16" 0.5
AK44H 4.25" 4.00" 3.66" 2 1-1/2" 3/4" 1-1/4" 9/16" -- 7/8" 7/16" 3/16" 0.5
AK46H 4.45" 4.20" 3.86" 2 1-1/2" 3/4" 1-1/4" 9/16" -- 7/8" 7/16" 3/16" 0.5
AK49H 4.75" 4.50" 4.16" 2 1-1/2" 3/4" 1-1/4" 9/16" -- 7/8" 7/16" 3/16" 0.6
AK51H 4.95" 4.70" 4.36" 2 1-1/2" 3/4" 1-1/4" 9/16" -- 7/8" 7/16" 3/16" 0.7
AK54H 5.25" 5.00" 4.66" 2 1-1/2" 3/4" 1-1/4" 9/16" -- 7/8" 7/16" 3/16" 0.7
AK56H 5.45" 5.20" 4.86" 2 1-1/2" 3/4" 1-1/4" 9/16" -- 7/8" 7/16" 3/16" 0.7
AK59H 5.75" 5.50" 5.16" 2 1-1/2" 3/4" 1-1/4" 9/16" -- 7/8" 7/16" 3/16" 0.9
AK61H 5.95" 5.70" 5.36" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 1.4
AK64H 6.25" 6.00" 5.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 1.5
AK66H 6.45" 6.20" 5.86" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 1.5
AK69H 6.75" 6.50" 6.16" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 1.5
AK71H 6.95" 6.70" 6.36" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 1.7
AK74H 7.25" 7.00" 6.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 1.7
AK79H 7.75" 7.50" 7.16" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 1.8
AK84H 8.25" 8.00" 7.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 1.9
AK89H 8.75" 8.50" 8.16" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 2.0
AK94H 9.25" 9.00" 8.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 2.1
AK99H 9.75" 9.50" 9.16" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 2.2
AK104H 10.25" 10.00" 9.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 2.3
AK109H 10.75" 10.50" 10.16" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 3.5
AK114H 11.25" 11.00" 10.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 3.8
AK124H 12.25" 12.00" 11.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 3.4
AK134H 13.25" 13.00" 12.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 4.0
AK144H 14.25" 14.00" 13.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 3.8
AK154H 15.25" 15.00" 14.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 4.3
AK184H 18.25" 18.00" 17.66" 3 1-1/2" 3/4" 1-1/4" 9/16" 0" 7/8" 7/16" 3/16" 4.5
2AKH V-Belt Pulleys:

Size Outside Diameter Pitch Diameter (4L/A) Pitch Diameter (3L) Type Dimension (O.L.) Dimension (F) Dimension (L) Dimension (P) Dimension (C) Dimension (X) Dimension (G) Dimension (E) Pulley Weight (LBS)
2AK30H 3.05" 2.80" 2.46" 1 2-7/16" 1-3/8" 1-1/4" 7/8" 15/16" 7/8" 7/16" 3/16" 1.4
2AK32H 3.25" 3.00" 2.66" 1 2-7/16" 1-3/8" 1-1/4" 7/8" 15/16" 7/8" 7/16" 3/16" 1.7
2AK34H 3.45" 3.20" 2.86" 1 2" 1-3/8" 1-1/4" 7/16" 1/2" 7/8" 7/16" 3/16" 1.8
2AK39H 3.75" 3.50" 3.16" 1 2" 1-3/8" 1-1/4" 7/16" 1/2" 7/8" 7/16" 3/16" 1.8
2AK41H 3.95" 3.70" 3.36" 2 1-1/2" 1-3/8" 1-1/4" 1/16" -- 7/8" 7/16" 3/16" 1.9
2AK44H 4.25" 4.00" 3.66" 2 1-1/2" 1-3/8" 1-1/4" 1/16" -- 7/8" 7/16" 3/16" 2.4
2AK46H 4.45" 4.20" 3.86" 2 1-1/2" 1-3/8" 1-1/4" 1/16" -- 7/8" 7/16" 3/16" 2.5
2AK49H 4.75" 4.50" 4.16" 2 1-1/2" 1-3/8" 1-1/4" 1/16" -- 7/8" 7/16" 3/16" 3.1
2AK51H 4.95" 4.70" 4.36" 2 1-1/2" 1-3/8" 1-1/4" 1/16" -- 7/8" 7/16" 3/16" 3.2
2AK54H 5.25" 5.00" 4.66" 2 1-1/2" 1-3/8" 1-1/4" 1/16" -- 7/8" 7/16" 3/16" 3.4
2AK56H 5.45" 5.20" 4.86" 2 1-1/2" 1-3/8" 1-1/4" 1/16" -- 7/8" 7/16" 3/16" 3.6
2AK59H 5.75" 5.50" 5.16" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 3.4
2AK61H 5.95" 5.70" 5.36" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 3.3
2AK64H 6.25" 6.00" 5.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 3.9
2AK74H 7.25" 7.00" 6.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 4.9
2AK84H 8.25" 8.00" 7.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 5.8
2AK94H 9.25" 9.00" 8.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 6.1
2AK104H 10.25" 10.00" 9.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 7.7
2AK114H 11.25" 11.00" 10.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 8.5
2AK124H 12.25" 12.00" 11.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 9.5
2AK134H 13.25" 13.00" 12.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 11.9
2AK144H 14.25" 14.00" 13.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 11.9
2AK154H 15.25" 15.00" 14.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 13.3
2AK184H 18.25" 18.00" 17.66" 3 1-1/2" 1-3/8" 1-1/4" 1/16" 0" 7/8" 7/16" 3/16" 16.8

About Us
Features
    • Premium V-Belt
    • Conforms To ARPM Standard IP 20
    • Extremely Durable
    • Oil & Heat Resistant

Accessories
V-Belt Sheave Wear Gauge | Pulley Wear Gauge
V-Belt Sheave Wear Gauge

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