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Rosta Roller Chain ANSI Standard • British Standard • Heavy-Duty • Extreme-Duty • Super Heavy Series • Cottered or Riveted • Multiple Strand • Stainless Steel • Nickel Plated • Dacroclad™ • Extended Pitch (Including Large Roller) • 81X, 81XH, 81XHH • Hollow Pin • Agricultural (CA550, CA620, etc.) • Citrus ChainThe product well displays environmental protection and energy saving. ISO 9001 certified manufacturer of precision roller chain & sprockets. Types include single and multiple strand, hollow pin, side bow, rollerless, self-lubricating, straight sidebar, double pitch, brushed, nickel plated, armor coated, 304 stainless steel, leaf, hoist and O-ring, citrus, sorting and caterpillar roller chain & sprockets.SEF27 Tensi1r device is not only a modern engineering marvel but is also a maintenance-free10sioning device that is utilized throughout the world for the various belt and roller chain & sprocket applications. The 61030030 SEF-27 front mounting10si1r serves 3 purposes; a torsional spring, a pivot bearing, and an anti-vibration mount. The true advantages of a ROSTA SEF2710si1r versus look-alikes are the patented specially engineered material that is within every10sioning device made by ROSTA, cost advantage, overall durability, and solid performance on high productivity productions lines. The front mounting style10si1r 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 and10sioning devices on the market! For more information or to get a quote on the SEF2710si1r please contact us and we will be happy to assist you!
SEF27 Tensi1r Dimensions
- Tensi1r Type: SEF27
- Article Number: 61030030
- Dimension (D): 3.07″
- Dimension (E): 4.25″ (+0.079 / – 0.020)
- Dimension (G): 0.31″
- Dimension (H): M10
- Dimension (J1): 5.12″
- Dimension (J2): 3.94″
- Dimension (K): 1.97″
- Dimension (L): 6.10″
- Dimension (M): 0.67″
- Dimension (N): 2.05″
- Dimension (O): 0.59″
- Dimension (P): 0.41″
- Dimension (R): 0.59″
- Dimension (T): 0.53″
- Dimension (U): 1.35″
- W8: 4.2 LBS
- Normal Temperature Range: -40°F to +176°F
Tensioning Force Table:Tightening Torque Table:
ROSTA SEF27 Tensi1r Technology
At the core of every ROSTA10si1r lies a special rubber compound that conforms to ISO 14001 with a unique ability to provide the consistent10sioning 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 ROSTA10si1r. To find out additional information on the technology click here!
SEF-27 Mounting Instructions
Tensi1r MountingTighten 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 menti1d 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 the10si1r, 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 Tensi1rsIn very long chain & sprocket and belt drives it was
recommendable to install on the slack-side several10si1rs, in order to compensate for occurring elongation. The “Boomerang” with its bent double-arm equipped with 2 chain & sprocket sprockets or a combination of grooved pulley and flat-roller (belt-drives)
offers a triple-compensation of chain & sprocket and belt elongations, due to S-shape contact-arc.