Manufacturer of Heavy Duty High Precision

Drum Motors

• Modern manufacturing facilities in the US, Canada, and Holland

utilizing the latest technology and expertise.

Company Profile

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What Is a Drum Motor

The Van der Graaf Drum Motor is a one component

conveyor drive in which the motor, gear drive, and all

moving parts are enclosed inside the drum.

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Design Benefits

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The Drum Motor Design:

Increases

o Versatility

o Space utilization

o Durability

o Production

o Safety

Reduces

o Maintenance

o Downtime

o Noise

o Energy &

Operating Costs

Drum Motor Assembly

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Comparison to Conventional

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The Drum Motor offers a much less complex and

more efficient way to power your belt conveyor.

Comparison Video

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Savings Compared to Conventional

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Drum Motor Features

• Lubricant/Cooling An oil bath ensures that heat is

transferred through the lubricant,

onto the drum, to dissipate on

the belt.

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Drum Motor Features

• Hermetic Sealing Van der Graaf manufacturers

and engineers seals that are

specific to the industry to provide

a leak proof environment.

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Drum Motor Features

• Honed and Ground Gears Using alloy steel, gears are

machined and honed to

AGMA/DIN6 standards and

exceed OSHA low-noise

requirements.

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Electric Motor

• Van der Graaf designs Drum Motors specific to each

environment.

• The drum motor can be supplied in all standard voltage or

any nonstandard voltage and frequency for three phase or

single phase applications.

Vacuum Pressure Impregnation Process Video

General Torque Curve Graph

Supply Voltage

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General Motor Torque Curve

This graph illustrates

the typical start-up

configuration and the

general motor torque

curves for Van der

Graaf drum motors.

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Vacuum Pressure Impregnation (VPI)

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Lagging

• Urethane Utilizes a unique ribbon flow method of

coating cylinders with high durometer

urethane.

• Hot Bond A vulcanization process that adheres

colandered rubber to the exterior of a

drum motor shell. The result is a

seamless, durable, and tear resistant

finish.

• Ceramic Rubber lagging with ceramic tiles

embedded improves traction and

abrasion resistance. Typically used for

larger HP drives that work in harsher

environments.

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Tungsten Carbide Infusion

• As an alternative to conventional lagging, Van der Graaf has

developed a traction coating layer of infused tungsten particles

embedded into the surface of the drum using a thermo spray

system.

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Range of Drum Motors

• Available in both standard material and stainless steel, Van der

Graaf Drum Motors can be used in all applications in order to

enhance any bulk or material handling system.

• Varieties include:

o Diameter Sizes

(4 – 36 inches)

o Various Belt Speeds

(3 ft/min – 1800 ft/min)

o Horsepower

(0.10 – 250)

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Sanitary Series Drum Motors (SSV)

o Ideal for the food industry

o Essential to conveyors requiring

sanitary wash down

• SSV Labyrinth Sealing System

o Prevents contaminants from

penetrating the sealing integrity

of the unit.

o SSV drum motors are capable of

handling 2000psi wash down

pressure.

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Cross Drive

• This design has all the

benefits of the Drum

Motor combined with the

flexibility of an external

electric motor for quick

and easy installation.

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• The Extreme Duty Mining Series

Drum Motor is a robust unit for

mining applications able to

withstand heavy shock loads.

• Engineered for the harshest

environments.

Diameter: 20 – 36 inches

Horsepower: 50 – 250

Extreme Duty

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Industries

• The Van der Graaf Drum Motor is built to meet the requirements of

any application. Our industries include:

o Airport Baggage Handling

o Postal/Parcel

o Food

o Mining & Aggregate

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ROI Summary

• Reduced maintenance and downtime – only an oil change every 50,000 hours

• Enhanced space utilization – fit more lines into less floor or overhead space

• With 96% mechanical efficiency, power savings of over 30% are possible

• AGMA/DIN 6 gear standards reduce operating noise

• Enhanced operator safety by eliminating external moving parts

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Principle

Van der Graaf adheres to one principle:

“Design a superior product to meet

customer needs in a changing marketplace”

As a result VDG has been the premiere supplier of conveyor

belt drives for over 60 years worldwide and continues to

answer the demands of the material handling industry.

Thank You

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Title

Lagging

Design Benefits

What Is a Drum Motor

Company Profile

Comparison to Conventional

Savings

Oil Lubricant

Hermetic Sealing

Honed & Ground Gears

Electric Motor

Torque Curve

Tungsten Carbide

Range of Drum Motors

SSV

Cross Drive

VIDEO Comparison

Cross Drive

Lagging

Tungsten Carbide

VPI

Drum Motor Assembly

Extreme Duty

Industries

ROI Summary