Gates B66 Belt

SKU	9003-2066
Weight	0.750000
Length (inch)	69
Length Type	Outside Circumference
Top Belt Width per strand (inch)	0.66
Nominal Thickness (inch)	0.41

Understanding the Part Number

B – The B stands for a “B” section v-belt. This is considered a “Classic” v-belt style that has a top width of 21/32 (0.656) inches, but is commonly referred to as a 5/8 (0.625) inch belt. The thickness of the belt is 13/32 (0.406) inches.

66– 66 inches is the inside circumference of the belt. For B-section v-belts, the outside circumference is found by adding 3 inches to the inside length of the belt. So, the outside circumference of the B66 belt is 69 inches (66+3).

Specifications

Dimensions:

Length (inch)	69
Length (mm)	1753
Length Type	Outside Circumference

Top Belt Width per strand (inch)	0.66
Top Belt Width per strand (mm)	17
Nominal Thickness (inch)	0.41
Nominal Thickness (mm)	10

Design:

Flex-Weave Cover – The Gates B66 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 B66 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 B66 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 B66 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 B-Section Hi-Power II PowerBand belt.

Requirements Met:

RMA oil and heat resistant standards.

RMA static conductivity requirements.

Similar Sizes:

Next Size Shorter: B65 (68 inch length)

Next Size Longer: B67 (70 inch length)

Next Size Narrower: A67 (Note: Belt will sit lower in the pulley, so a shorter belt might be needed)

Next Size Wider: C65 (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 6” Pulley	Horsepower Rating ⁽¹⁾ on a 4” Pulley	Shock Load	Backside Idler	Clutching
Gates B66	$16.88	8.85	Not Suitable	Good	Not Ideal	Good
Gates 5L690	$15.83	5.21	2.3		Good	Good
Gates 6969	$29.54	6.49	2.86	Excellent	Good	Good
Gates BX66	$22.19	10	6.04	Good	Not Ideal	Not Suitable
Gates BP66	$28.53	16.3	Not Suitable	Excellent	Not Ideal	Good

(1) Horsepower rating calculated using Gates Design Flex software for a single belt at 1750 rpm and a 1:1 speed ratio on a 6” 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 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 B66 fan belt
Balflex Classic B66
Bando Power King B66
Bestorq Wrapped B66
Browning Super Gripbelt B66
Carlisle Super II B66
Continental B66 V-Belt
ContiTech (Conti) B66
Dayco Gold Label AP55
Dayton B66 fan belt
Dodge 107042 AP55
Dunlop B66
Fenner Classic B66

Goodrich B66 vbelt
Goodyear Hy-T Plus B66
Grainger 3X640
Hutchinson Conventional Wrapped B66
Jason Industrial Unimatch Multi-Plus B66
Maska Classical VBB66
Mitsuboshi Red Label B66
Optibelt VB B66
Pirelli B66 veebelt
Pix B66 vbelt
TB Woods Conventional B66
Thermoid Prime Mover B66
Thermoid Select B66