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Rosta SEF50 Tensioner | Front Mounting SEF-50 Tensioner

Rosta SEF50 Front Mounting Tensioner
Rosta SEF50 Front Mounting Tensioner


 


Product Code: 61030033-SEF50-TENSIONER
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Description Technical Specs
 
Rosta SEF50 Tensioner device is not only a modern engineering marvel but is also a maintenance-free tensioning device that is utilized throughout the world for the various belt and roller chain applications. The 61030033 SEF-50 front mounting tensioner serves three purposes; a torsional spring, a pivot bearing, and an anti-vibration mount. The true advantages of a ROSTA SEF50 tensioner versus look-alikes are the patented specially engineered material that is within every tensioning device made by ROSTA, cost advantage, overall durability, and solid performance on high productivity productions lines. The front mounting style tensioner serves its purpose in applications with blind-hole frames, for over 45-years ROSTA has produced some of the highest quality and longest-lasting dampening and tensioning devices on the market! For more information or to get a quote on the SEF50 tensioner please contact us and we will be happy to assist you!

SEF50 Tensioner Dimensions


  • Tensioner Type: SEF50
  • Article Number: 61030033
  • Dimension (D): 5.12"
  • Dimension (E): 8.27" (+0.118 / -0.039)
  • Dimension (G): 0.79"
  • Dimension (H): M20
  • Dimension (J1): 9.84"
  • Dimension (J2): 7.87"
  • Dimension (K): 3.15"
  • Dimension (L): 11.42"
  • Dimension (M): 0.91"
  • Dimension (N): 3.43"
  • Dimension (O): 0.79"
  • Dimension (P): 0.67"
  • Dimension (R): 1.06"
  • Dimension (T): 0.81"
  • Dimension (U): 2.26"
  • Weight: 22.3 LBS
  • Normal Temperature Range: -40°F to +176°F

Tensioning Force Table:

Tightening Torque Table:

ROSTA SEF50 Tensioner Technology


At the core of every ROSTA tensioner lies a special rubber compound that conforms to ISO 14001 with a unique ability to provide the consistent tensioning force with minimal impairment to the material its self. ROSTA is the only company capable of producing this specific material, this is why no "interchange" can withstand the same life-span as a ROSTA tensioner.

To find out additional information on the technology click here!

SEF-50 Mounting Instructions


Tensioner Mounting

Tighten the flange screw slightly. Grip the housing with flat-wrench and set needful pre-tension by rotating the housing in the required direction. Tighten the central screw according to the above mentioned tightening moment MA. Position flat-wrench close by the flange-bottom.

Z-configuration of Sprockets or Riders

If there is the need to install sprockets, riders or rollers on the outer arm-side of the tensioner, then the distance "Z" should be as little as possible to avoid misalignment in element parallelism. Furthermore, the pre-tension force should not exceed 50% of the capacity = max. the pre-tension angle of ~ 20°.

Use of SE-B Boomerang Tensioners

In very long chain and belt drives it was recommendable to install on the slack-side several tensioners, in order to compensate for occurring elongation. The "Boomerang" with its bent double-arm equipped with two chain sprockets or a combination of grooved pulley and flat-roller (belt-drives) offers a triple-compensation of chain and belt elongations, due to S-shape contact-arc.

About Us
Features
    • High-Quality Tensioning Device
    • Made to ISO Standards
    • Utilizes Proprietary ROSTA Ruber Insert
    • Used in Belt and Chain Applications

Accessories
Rosta 06585001 CB4 Flat Belt Idler Rosta 06530008 T120BB11 Sprocket For SE45/SE50 Tensioners Rosta 06520008 D120BB11 Sprocket For SE45/SE50 Tensioners Rosta 06586002 A3 V-Belt Pulley Idler For A V-Belts
Rosta 06585001 CB4 Flat Belt Idler Rosta 06530008 T120BB11 Sprocket Rosta 06520008 D120BB11 Sprocket Rosta 06586002 A3 V-Belt Pulley Idler
Rosta 100BB11 Idler Sprocket For SE45/ SE50 Tensioners Rosta 06520007 D100BB13 Sprocket For SE45/SE50 Tensioners Rosta 61030042 B7 V-Belt Pulley Idler For B and C V-Belts Rosta 120BB9 Idler Sprocket For SE45/ SE50 Tensioners
Rosta 100BB11 Idler Sprocket Rosta 06520007 D100BB13 Sprocket Rosta 61030042 B7 V-Belt Pulley Idler Rosta 120BB9 Idler Sprocket
Rosta 06510008 120BB11 Sprocket For SE45/SE50 Tensioners Rosta 06530007 T100BB13 Sprocket For SE45/SE50 Tensioners Rosta 06510007 100BB13 Sprocket For SE45/SE50 Tensioners Rosta 06586001 B5 V-Belt Pulley Idler For B and C V-Belts
Rosta 06510008 120BB11 Sprocket Rosta 06530007 T100BB13 Sprocket Rosta 06510007 100BB13 Sprocket Rosta 06586001 B5 V-Belt Pulley Idler

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