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Stocking Status: Special Order - Typically ships in 5-10 business days

Will drop ship from manufacturer in 1 business day with Next Day Air or 2nd Day Air Shipping Selection

Will drop ship from manufacturer in 1-2 business days if order total is over $500.00

$6.03
  • Buy 10 for $5.73 each and save 5%
  • Buy 25 for $5.58 each and save 7%
  • Buy 50 for $5.43 each and save 10%
SKU 9002-2021
Weight 0.130000
Length (inch) 23
Length Type Outside Circumference
Top Belt Width per strand (inch) 0.5
Nominal Thickness (inch) 0.31
Understanding the Part Number

A – The A stands for an “A” section v-belt.  This is considered a “Classic” v-belt style that has a top width of ½ (0.5) inches and a thickness of 5/16 (0.312) inches.

21– 21 inches is the inside circumference of the belt.  For A-section v-belts, the outside circumference is found by adding 2 inches to the inside length of the belt.  So, the outside circumference of the A21 belt is 23 inches (21+2).

Specifications
Dimensions:
Length (inch) 23
Length (mm) 584
Length Type Outside Circumference
Top Belt Width per strand (inch) 0.5
Top Belt Width per strand (mm) 13
Nominal Thickness (inch) 0.31
Nominal Thickness (mm) 8
Design:
  • Flex-Weave Cover – The Gates A21 v-belt is a wrapped belt that features a patented single layer fabric construction for longer cover life.  The cover protects the belt core from oil dirt and heat.  The wrapped cover also makes the belt suitable for clutching applications.
  • Flex-Bonded Cords – The Hi-Power II belt line utilizes a proprietary  core material blend that strongly bonds the polyester cords to the body of the belt, resulting in uniform load distribution and absorption of bending stress without cord deterioration.
  • Gates Curves – The belt cross-section has been optimized to provide proper cord support and full contact with the pulley to provide uniform loading, uniform wear, and increased belt life.
Recommended Applications:
Gates Hi-Power II A21 v-belts are high quality, heavy duty belts that can be used in a variety of industrial and agricultural power transmission applications. These belts are used in HVAC applications, conveyor systems, centrifugal pumps, air compressors, crushers, and more.
Matching / Multi-Belt Drives:

Part of the V80 Matching System - Gates Hi-Power II A21 v-belts can be used individually in a single vbelt drive or can be used in sets of 2 or more belts for higher horsepower applications.  All belts in a multiple belt drive must be within a certain length tolerance in order for the belts to work together to provide the full design horsepower.  In the past, manufacturing tolerances were wider and each belt was assigned a match number that indicated its exact length within the manufacturing tolerance.  Gates invested heavily to reduce manufacturing tolerances.  The result was the V80 matching system that ensures that every A21 belt can be used in a matched set, regardless of batch or lot.  An alternative to using a set of individual belts is to use a joined or banded belt such as the Gates A-Section Hi-Power II PowerBand belt.

Requirements Met:

RMA oil and heat resistant standards.

RMA static conductivity requirements.

Similar Products
Similar Sizes:

Next Size Shorter: A20 (22 inch length)

Next Size Longer: A22 (24 inch length)

 

Next Size Narrower: 6723 (Note: Belt will sit lower in the pulley, so a shorter belt might be needed)

Next Size Wider: 6923 (Note: Belt will sit higher in the pulley, so a longer belt might be needed)

Same Size – Different Product Line:
Part Number Price Horsepower Rating (1) on a 4” Pulley Horsepower Rating (2) on a 2.4” Pulley Shock Load Backside Idler Clutching
Gates A21 $6.03 3.92 Not Suitable Good Not Ideal Good
Gates 4L230 $5.85 2.29 0.56 Good Good
Gates 6823 $11.31 2.86 0.69 Excellent Good Good
Gates AX21 $7.89 4.37 1.84 Good Not Ideal Not Suitable
Gates
(1)  Horsepower rating calculated using Gates Design Flex software for a single belt at 1750 rpm and a 1:1 speed ratio on a 4” pulley
(2) Horsepower rating calculated using Gates Design Flex software for a single belt at 1750 rpm and a 1:1 speed ratio on a 2.4” pulley
Compatible Pulleys / Sheaves:
Recommended Pulleys or Sheaves for Light Duty Applications

Light Duty Sheave or Pulley – Bored to Size (Fixed diameter for single or dual belt drives)

Light Duty Sheave or Pulley – Variable Pitch – Bored to Size (Adjustable pitch diameter for single or dual belt drives)

Light Duty Sheave or Pulley – QT Bushed – (Fixed diameter for single or dual belt drives)

Recommended Pulleys or Sheaves for Heavy Duty Applications

Multi-Duty Sheave or Pulley (Fixed diameter for single or multi belt drives)

SVS  Adjustable Speed Sheave or Pulley (Adjustable pitch diameter for multi belt drives)

Competitive Cross-Reference:
  • AC Delco A21 fan belt
  • Balflex Classic A21
  • Bando Power King A21
  • Bestorq Wrapped A21
  • Browning Super Gripbelt A21
  • Carlisle Super II A21
  • Continental A21 V-Belt
  • ContiTech (Conti) A21
  • Dayco Gold Label AP55
  • Dayton A21 fan belt
  • Dodge AP55
  • Dunlop A21
  • Fenner Classic A21
  • Goodrich A21 vbelt
  • Goodyear Hy-T Plus A21
  • Grainger 3GWG4
  • Hutchinson Conventional Wrapped A21
  • Jason Industrial Unimatch Multi-Plus A21
  • Maska Classical VBA21
  • Mitsuboshi Red Label A21
  • Optibelt VB A21
  • Pirelli A21 veebelt
  • Pix A21 vbelt
  • TB Woods Conventional A21
  • Thermoid Prime Mover A21
  • Thermoid Select A21