Interroll Products

Lagging for positive drive solid homogenous belts

  • Specially produced lagging based on the specification of thermoplastic non-modular belt manufacturers
  • For food and hygienic applications
  • For driving most common positive drive solid homogeneous belts
  • For motors for applications with positive drive belts
  • High resistance to oil, fuel and other chemicals
  • Resistant to abrasion
  • Low-noise operation
  • For standard asynchronous drum motors with frequency inverter. The frequency inverter should be set up to reduce the power by 18%.
  • For synchronous drum motors
  • Reduced wear on belt
  • Easy to clean
  • Low friction

Lagging has an influence on the outer diameter of the drum motor and on the velocity. The belt pull and speed of the drum motor must be recalculated based on the increased diameter.

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Lagging for Friction Drive Belts

  • For standard drum motors
  • For food and hygienic applications
  • Flat belt, multi V-belt or round belt applications
  • High resistance to oil, fuel and other chemicals
  • Lagging increases friction between drum motor shell and conveyor belt
  • Longitudinal grooved lagging reduces liquids between belt and shell
  • Centered V-groove for belt tracking facility
  • Multiple V-grooves for V-belt or round belt conveyors
  • Hot vulcanization for high-torque drum motors
  • Hot vulcanization is more hygienic

Lagging has an influence on the outer diameter of the drum motor and on the velocity. The belt pull and speed of the drum motor must be recalculated based on the increased diameter.

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Lagging for Plastic Modular Belts

  • Specially produced lagging based on the specification of thermoplastic non-modular belt manufacturers
  • For food and hygienic applications
  • For driving most common plastic modular belts
  • For motors for applications with positive drive belts
  • Resistant to abrasion
  • Low noise
  • Reduced wear on belt
  • For standard asynchronous drum motors with frequency inverter. The frequency inverter should be set up to reduce the power by 18%.
  • Easy to clean
  • High resistance to oil, fuel and other chemicals

Lagging has an influence on the outer diameter of the drum motor and on the velocity. The belt pull and speed of the drum motor must be recalculated based on the increased diameter.

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Sprockets for Plastic Modular Belts

  • For driving most common plastic modular belts
  • For standard asynchronous drum motors with frequency inverter. The frequency inverter should be set up to reduce the power by 18%.
  • For synchronous drum motors
  • For motors for applications with positive drive belts
  • For drum motors with cylindrical shell and key
  • For food processing applications
  • Laser cut for excellent fitting accuracy
  • Rust-free with stainless steel sprockets

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Backstops (for asynchronous drum motors only)

  • Preventing a run-back of the belt and load when the power supply is off
  • Single direction inclined belt conveyors
  • For i-series drum motors only
  • Bearing runs only in one direction
  • Fitted to the rotor shaft, except 80i
  • Fitted in the end housing on the 80i
  • No electrical connection necessary
  • Higher holding torque than an electromagnetic brake

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Balancing (for asynchronous drum motors only)

  • High-speed conveyors
  • Weighing equipment
  • For i-series drum motors only
  • Not for synchronous drum motors

Any external modifications, like fixtures, lagging or sprockets, have an impact on the imbalance.

For dynamic balancing please choose only i-series drum motors with stainless steel end housings.

For S-series drum motors only static balancing is possible.

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Rectifiers (for asynchronous drum motors only)

  • The rectifier operates the electromagnetic brake
  • For drum motors with electromagnetic brake
  • For applications with frequent starts and stops
  • For positioning applications
  • Half-wave and bridge rectifier for standard applications
  • Fast acting and multiswitch rectifier for applications in which short opening delay times are necessary
  • Not for S-series
  • For asynchronous drum motors only
  • Not for synchronous drum motors
  • External component, must be covered or installed in a control box as close to the brake as possible

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Feedback Devices

  • For applications which require control and monitoring of speed, direction, and position of the belt or load
  • For i- and D- series motors
  • Enables closed loop system control
  • Cannot be combined with a brake or backstop option
  • Supplies low to high resolution signals to an external control unit
  • Incremental or absolute encoders
  • Coupled to rotor shaft or embedded in the rotor bearing

Not available for i-Series with dual voltage

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Time is of the essence: it just has to be a new drum motor and rubber coated as well. Interroll can now offer a quality cold bonded or hot vulcanized drum motor to their customer requirements with a much shorter delivery time. With the latest manufacturing and test equipment available this enables all our customers to receive the highest quality rubber coating and excellent delivery times. We can offer rubber coated drive drums to cover PVC, PU and heavy duty conveyor belts, plus we have over 250 designs covering the majority of plastic modular belting. Our knowledge and experience is of great help to our customers when specifying their requirements.

Interroll is able to rubber coat from 500 to 1,000 shells or rollers per week, depending upon type and customer needs. Our Coating Center only supply rubber of the highest quality, whereby formulae and compounds are specified together with suppliers, confirming that they are available exclusively to the CCW.

In the Coating Center, 80% is hot vulcanised and 20% cold bonded. Cold bonding involves establishing a chemical bond between the vulcanised rubber and the shell. The shell is degreased and metal blasted in a fully automatic blasting chamber, and then rubber is transferred to the shell via a bonding process. This finished rubber usually has a smooth surface and is not processed further. 'Smooth' cold bonding shells are used for driving all types of belts except several modular belts.

Hot vulcanized shells are also degreased and blasted on the inner and outer surfaces. They are then subjected to a special 'primer finish'. An extruder coats the product with uncured rubber, and following that, an autoclave vulcanises the tubes at 150°C and a pressure of 5 bar. The shells are then subjected to an abrading process, and can be ground smooth, spherically, crowned or cylindrically. It is also possible to grind slots or profiles into the surface for driving full PU material or modular belts, in fact just as the customer desires. A unique CNC machine designed exclusively by Interroll is used for the grinding and profiling process.

Coating Center standard rubbers:

  • NBR Black, 65Shore A
  • NBR White, 70Shore A, FDA + EC1935
  • NBR Blue, 70Shore A, FDA + EC1935
  • Other qualities, colours and hardnesses can be supplied in accordance with customer requirements and volumes
  • Download Drum Motors Options (PDF. 1 MB) Download

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