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Variable pulleys and motor slide bases

The expandable-disc pulleys (divided into two large families) are the most simple and economic solution for changing rapidly and continuously the rotation speed of two shaft, without having to stop the transmission.


BENEFIT OF OUR MODELS ...

  • Good reliability.
  • Wide selection.
  • Easy installation.
  • Highly accurate manufacturing.
  • Competitive pricing without sacrificing quality.
  • "Made in Italy" with certified quality.
            

OUR MAIN PRODUCT RANGE

  • "VARIABLE CENTRE DISTANCE": consisting of two plates sliding symmetrically on a hub, transmits motion to a “fixed” driven pulley with variation ratios up to 1:3.5, by varying the distance between the centres of the two pulleys.
  • “FIXED CENTRE DISTANCE": consists of a pair of pulleys, both with a single mobile disc that makes it possible to vary the speed with a ratio of up to 1:12,3 by varying of the handwheel on the driving pulley.

Variable pulleys and motor slide bases - VAR.D.E.A.C. constant drive diaphragm springs and grooved round hub for a perfect shaft disc coupling max ratio 1 2 8 max power 4 Kw .
VAR.D.E.A.C.: constant-drive diaphragm springs and grooved round hub for a perfect shaft/disc coupling (max ratio 1:2,8 - max power 4 Kw).

 

  • Discs of hardened and tempered steel with a phosphating treatment. 
  • Diaphragm springs for greater stability of the transmission, even with vibration. 
  • Grooved hub suitable for demanding applications.
  • High sliding of the disks, in order to noiseless during speed variation.
  • With grease nipple.

Variable pulleys and motor slide bases - VAR.D.E.A.C. MTZ helical springs full covered galvanized plates self lubricating round hub. Transmission by key max ratio 1 3 4 max power 18 5 Kw .
VAR.D.E.A.C./MTZ: helical springs full covered, galvanized plates, self-lubricating round hub. Transmission by key (max ratio 1:3,4 - max power 18,5 Kw).


  • Discs with anticorrosive galvanizing treatment.
  • Self-lubricating round hub, maintenance-free.
  • Very silent during operation work.
  • Helical springs fully protected suitable for dusty environment.
  • Suitable for high power.

Variable pulleys and motor slide bases - VAR.D.E.A.C. MTE helical springs phosphated plates self lubricating round hub transmission by key. Max ratio 1 3 5 max power 4 Kw .
VAR.D.E.A.C./MTE: helical springs, phosphated plates, self-lubricating round hub (transmission by key. Max ratio 1:3,5 - max power 4 Kw).

 

  • Discs with phosphate treatment.
  • Self-lubricating round hub, maintenance-free.
  • Partially covered helical springs.
  • Compact model.
  • Economic model.

 

 

Variable pulleys and motor slide bases - PMG die casting iron motor slide base
PMG: die casting iron motor slide base

 

  • Made in die casting iron
  • Maximum rigidity and stability.
  • Available with single or double sliding plate.
  • Equipped with a handwheel for easy adjustment.
  • Double sliding plate model already drilled ready for motor assembly.

 

 

 

Variable pulleys and motor slide bases - PML sheet steel motor slide base
PML: sheet steel motor slide base

 

  • Made in galvanized sheet steel.
  • Galvanizing treatment after bending and machining to avoid oxidations on the elements.
  • Assembly aligned to assure maximum sliding and avoid deformations.
  • Completely drilled model for quick installation and motor assembly.
  • Excellent price/performance ratio.

Variable pulleys and motor slide bases - VAR.D.E.A.C. TF IF mono expandable pulleys with fixed centre distance and self lubricating round hub. Transmission by key. Driving pulley with and without handwheel driven pulley with helical spring max ratio 1 12 3 Max power 18 5 Kw .
VAR.D.E.A.C./TF/IF: mono-expandable pulleys with fixed centre distance and self-lubricating round hub. Transmission by key. Driving pulley with and without handwheel; driven pulley with helical spring (max ratio 1:12,3 - Max power 18,5 Kw).

 

  • Self-lubricating round hub, maintenance-free.
  • Couple of mono-expandable pulleys with a phosphating treatment on the disc.
  • Disc Sliding Adjustment by handwheel.
  • Max variation Ratio 1:12,3.
  • Self-aligning during the variation of the speed.

Variable pulleys and motor slide bases - VAR.D.E.A.C. COMPACT model with mono expandable disc compact series.
VAR.D.E.A.C./COMPACT: model with mono-expandable disc, compact series.

 

  • Pulley mono-expandable with helical spring.
  • Discs with anticorrosive galvanizing treatment.
  • Self-lubricating round hub, maintenance-free.
  • Suitable for normal trapezoidal small belts (17x11 max).
  • Compact model.