HEAVY DUTY CONVEYOR BELT

Heavy Duty Conveyor Belt Heavy Duty Conveyor Belt
At Columbia Rubber & Gasket we stock Boston conveyor belt. Boston Industrial Products has been manufacturing high quality, high performance industrial rubber products since 1880. Long noted for innovations in the industry, Boston pioneered and developed the minimum ply concept in conveyor belting which is still the standard for the industry today. Other Boston innovations, such as the "Rotocure" continuous vulcanization process and "Balanced Belt Construction," have made Boston's name synonymous with reliability and quality. Boston manufacturers a wide range of both rubber cover compounds and reinforcing fabrics to solve the most demanding conveyor applications.

Belt Reinforcing Fabrics

Boston utilizes polyester and nylon textiles in the construction of their belt fabrics. Tough polyester filament yarns give BostRon belt high tensile strength. The longitudinal warp yarns carry the tension, and the traverse fill yarns hold the warp in place and retain the bolts or rivets of mechanical fasteners. The crimp in the fabric acts as a shock absorber. It permits the fabric to deflect and adjust itself during impact shock.
  • Low stretch and shrink characteristics reduce the take up and the time needed for drive adjustments.
  • Resistance to mildew and rot means that wet applications will not affect the belt.
  • Low moisture absorption means greater dimensional stability in wet or dry applications.
  • Excellent resistance to chemicals and acids allows a wide range of uses in a variety of environments
  • High adhesion between plies and outstanding flexibility allow the use of smaller pulleys and give greater service life.
  • Excellent resistance to stretch and breakdown due to heat means consistent service in high temperature applications.

Belt Cover Compounds

General Propose: Dulon

A durable and long lasting cover, Dulon is specially compounded to deliver long service life in abrasive applications. It is resistant to cut and gouges and generally recommended in rugged applications. A high quality RMA Grade II compound, it is flexible at low temperatures. Dulon covers are generally recommended for conveying sand and gravel, limestone, crushed rock, slag, coke, coal, cement rock, phosphate rock and the majority of material weighing between 50 and 120 lbs. per cubic foot.

Also available: Dulon 600 RMA Grade I

Oil Resistant: VOR

An economical, static conductive, and moderately oil resistant compound, VOR has good abrasion resistance for handling grain, wood chips or other lightweight materials.

Also available: ROR for resistance to wood pitch and oily grains, and Nitrile for resistance to oils and sludge.

Heat Resistant: Heat King RA

This compound has proven economical and long lasting in service handling rough, abrasive materials up to 300ºF. Used in fertilizer, salt, cement, coke, slag and steel processing. Heat King RA can be used whenever high abrasion and heat resistant qualities are required.

Also available: Super Heat King BT for temperatures up to 400ºF.

Heat Resistant: EPDM Hot Service

Designed for high temperature service conditions with maximum resistance to the effects of hot abrasive loads. Recommended for hot fines to 400ºF or loads of coarse material to 450ºF, conveying materials such as clinker, calcined lime, carbon black and foundry sand.

Also available: Heat King OR for heat and oil resistance such as hot asphalt.
Other compounds available include Fire Resistant (Flameout-SBR) and Fire and Oil Resistant (Favor, Favor O.R. 2, Flameout O.R. 1, Flameout O.R. 2 and Flameout - Neoprene). Please call the Customer Service Department for full specifications.

Belt Selection Tables

The following tables have been simplified for ease of use in belt selection. In the interest of safe conveyor practice, conservative values for pulley diameters, load support and troughing minimums have been used. Adherence to these tables is suggested and the _____ Rubber & Gasket Customer Service Department should be contacted if substantial deviation is required.

Belt Carcass Ratings
Fabric Carcass Ply Tension Rating Carcass Thickness Belt Modulus Weight 1** Weight 2**
80 PIW/Ply CE1602 2 160 3/32" 10000 .0475 .0528
CE2253 3 240 9/64" 15000 .0632 .0699
110 PIW/Ply CE2252 2 220 1/8" 18000 .0550 .0603
CE3253 3 330 3/16" 27000 .0845 .0928
CE4204 4 440 17/64" 36000 .1216 .1340
CE5255 5 550 11/32" 45000 .1587 .1752
CE6306 6 660 27/64" 54000 .1957 .2164
150 PIW/Ply CE3002 2 300 11/64" 30000 .0681 .0748
CE4503 3 450 15/64" 45000 .0936 .1197
CE6004 4 600 21/64" 60000 .1342 .1473
CE7505 5 750 13/32" 70000 .1748 .1748
200 PIW/Ply CE4002 2 400 7/32" 28000 .0897 .0980
CE6003 3 600 17/64" 42000 .1060 .1139
CE8004 4 800 3/8" 56000 .1498 .1618
CE10005 5 1000* 15/32" 70000 .1937 .2096
CE12006 6 1200* 17/32" 84000 .2376 .2575
*Note: Carcasses CE10005 and CE12006 have a tension rating of 800 PIW with mechanical fasteners. Values shown above are for a vulcanized splice.
**Note: These weight values are carcass weight per lineal foot in pounds per inch of width.
"Weight 1" is for Dulon, Dulon 600, Heat Ding RA, OR and BT, EPDM, Nitrile, ROR and VOR.
"Weight 2" is for Favor, Favor OR 2 and Flameout OR 1, OR 2, SBR and Neoprene.

Cover Weights

Approximate weight in pounds per 1/32" cover gauge (per lineal foot per inch of width.)

Cover compound Weight
Dulon, Dulon 600, VOR, HKRA, HKBT and EPDM Hot Service .0167
Favor, Favor OR 2, Flameout OR 1, OR 2, SBR and Neoprene .0197
HKOR, ROR and Nitrile .0180

Examples of Weight Calculations

Example #1: 24" wide CE3253 with 3/16" x 1/16" Dulon covers.

Example #2: 54" wide CE8004 with 3/8" x 1/4" Heat King OR covers.

Troughability and Load Support

Operating Conditions Material Weighs Less than 50 PCF Material Weighs 51-75 PCF Material Weighs 76-115 PCF Material Weighs Over 115 PCF Any Condition; Loaded or Empty
Carcass Maximum Width Load Support Maximum Width Load Support Maximum Width Load Support Maximum Width Load Support Minimum Width Troughability
Idlers 20º 35º 45º 20º 35º 45º 20º 35º 45º 20º 35º 45º 20-35º 45º
1602 42 42 36 36 36 30 36 30 24 30 24 18 14 18
2253 60 54 48 60 48 42 42 42 36 42 36 30 20 30
2252 54 48 42 42 42 36 42 36 30 36 30 24 18 24
3253 72 60 54 60 54 48 54 48 42 48 42 36 24 30
4204 72 72 66 72 66<¸P†\ 60 72 60 54 60 54 48 30 36
5255 72 72 66 72 66 60 72 60 54 60 54 48 30 36
6306 72 72 66 72 66 60 72 60 54 66 54 48 36 42
3002 72 72 60 60 54 48 54 48 42 48 42 36 18 24
4503 72 72 60 66 60 54 60 54 48 54 48 42 24 30
6004 72 72 66 72 66 60 72 60 54 60 54 48 30 36
7505 72 72 72 72 72 66 72 72 66 72 60 48 36 42
4002 66 66 60 60 60 54 54 54 48 48 48 42 24 30
6003 72 72 66 72 66 60 72 60 54 60 54 48 30 36
8004 72 72 72 72 72 66 72 72 66 72 66 60 36 42
10005 72 72 72 72 72 72 72 72 72 72 72 66 42 48
12006 72 72 72 72 72 72 72 72 72 72 72 72 48 54

Minimum Recommended Pulley Diameters

Carcass (PIW) Tandem or Dual Drive Head or Single Drive Tail and Snubs
Over 80% of Rating 60-80% of Rating 40-60% of Rating Under 40% of Rating
1602 (160) 18" 16" 14" 12" 10" 10"
2253 (240) 20" 18" 16" 14" 12" 12"
2252 (220) 18" 16" 14" 12" 10" 10"
3253 (330) 20" 18" 16" 14" 12" 12"
4204 (440) 30" 24" 20" 18" 16" 16"
5255 (550) 36" 30" 24" 20" 18" 18"
6306 (660) 42" 36" 30" 24" 20" 20"
3002 (300) 24" 18" 16" 14" 12" 12"
4503 (450) 30" 24" 20" 18" 16" 16"
6004 (600) 36" 30" 24" 20" 18" 18"
7505 (750) 42" 36" 30" 24" 20" 20"
4002 (400) 24" 20" 18" 16" 14" 14"
6003 (600) 30" 24" 20" 18" 16" 16"
8004 (800) 36" 30" 24" 20" 18" 18"
10005 (1000) 42" 36" 30" 24" 20" 20"
12006 (1200) 48" 42" 36" 30" 24" 24"