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Tangential Belts

Tangential Belts

Sectional tangential belt drives

These types of drive place high demands an the tangential belt:

  • the ability to withstand high mechanical and thermal stress on the belt surfaces – especially during spindle stop and acceleration
  • precise belt tracking with little oscillation
  • greatest possible belt flexibility as well as a simple, reliable endless splice


The properties of the Siegling Extremultus A + E line are used to their fullest advantage on this application. The highly-modular, flexible belt design saves energy and minimizes RPM variations in the section of spindles. The precise Z-splice ensures that the belt tracks with little oscillation, treating the machinery gently. Yarn quality and service lives of the drive components increase, energy and maintenance costs drop.

Sectional tangential belt drives

Conventional tangential belt drives

Whether it is twisters, texturing machines, ring spinning frames, double twisters or cover spinning frames the following requirements are increasingly important for the tangential belt:

  • greatest possible transmission of effective pull while using the technical properties to the fullest
  • reduced noise generation as speeds increase
  • functional reliability, ensuring high productivity


Highly-modular tangential belts of the Siegling Extremultus A + E line are being used increasingly more often, in addition to the reasonably-priced, tried-and-tested Siegling Extremultus P line tangential belts.

Conventional tangential belt drives

Tangential belt drives with concave/convex drive geometry

For the economical mass production of textile machinery, the design of the spindle section with concave or convex drive geometry has proven itself time and time again. The elimination of pressure rollers, the small pulley diameters, the short take-up ranges and in some cases the fluctuating ambient conditions shape the requirements for:

  • precise tracking and low-noise belt operation
  • belts which save energy and are flexible
  • highly-modular tension member largely unaffected by climate, and long belt life


The innovative Siegling Extremultus E line provides the greatest benefits possible for application technology, setting a new cost/benefit standard for operating and maintenance costs.

Tangential Belts

Rotor Belts for OE Machines

Rotor drive belts for OE machines

Since the infancy of OE spinning technology, high-efficiency tangential belts from Forbo Movement Systems have been closely associated with rapid increase in rotor speeds. Under the trademark Siegling Extremultus GG 20..., milestones have been set in the development of rotor drive belt technology:

  • the extremely wear-resistant black OE coating
  • the precise SV splice
  • the precise HP ground texture.

Rotor Belts for OE Machines

The development of the rotor belt GG-20P-26-HP BLACK by Forbo Movement Systems, marked a new milestone in rotor power transmission technology.

The new, black elastomer coating of the rotor belt does not easily harden, does not vitrify, and will maintain constant friction during the running phase. As a result, consistent, short run-up periods are achieved over the belt’s entire service life.

In combination with optional HP precision grinding, the rotor belts operate quietly with little vibration. The reduction in vibration causes less wear to the twin disc bearing and increases the efficiency and lifetime of the belt.

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