Chain Standard
Chain Size
Idler Type
| ROSTA SE Tensioner | ROSTA Chain Idler |
|---|---|
| SE 15 or SE 18 | N3/8" - 10 S |
The tensioning element with the specification SE (SE 11 to SE 50) is the mostly used standard unit for tensioning of all kind of chain and belt drives. The elastomeric inserts are based on a high elastic natural rubber with a good shape memory. This unit is designed for applications in temperatures from -40° to +80°C (-40° to +180°F)
The ROSTA tensioning elements type SE-F is designed for front mounting applications on "blind" frame structures. Rubber quality, tensioning pressure, material and surface protection are identical to the type SE. The special fixation screw with distance bushing is zinc-plated and secured in the housing by means of a rubber 0-ring.
The ROSTA tensioning element type SE-FE is designed for front mounting applications on engines such as cooling compressors and fan drives. Steel parts are black painted.
Today nearly all busses for passenger transport are equipped with an air-conditioning system. The diesel engine of the bus serves thereby as energy source of the cooling compressor. The piston- or rotation compressors are driven via V- or Poly-V belts from the spur wheel of the main engine. This belt transmission requires a slippage-free power train to ensure the full capacity of the cooling compressors.
ROSTA designed for this specific application a heat resistant tensioner - powerful, compact with a long compensation travel.
The tensioning element type SE-G (marked with yellow dot) has zinc-plated steel parts and therefore is specially designed for "outdoor" applications; e.g. for building machines.
The ROSTA tensioning elements type SEI are all made out of stainless steel. They are available off-the-shelve in four different sizes: SEI 15, 18, 27, housing in SS casted version, SEI 40 (similiar to SE 38), housing in SS welded version.
The tensioning element type SE-W (marked with red dot) is equipped with heat resistant elastomeric inserts. It is developed for applications in temperatures from +80° to +120°C (+180° to 250°F), such as belt tensioners for diesel engines, chain tensioner in driers, belt scraper in hot surroundings, etc.
ROSTA modules should be connected on machine parts/structures by means of the standardized clamps and brackets. Relevant welded connections would affect (overheat) the rubber inserts and damage the entire suspension device!
ROSTA modules should be connected on machine parts/structures by means of the standardized clamps and brackets. Relevant welded connections would affect (overheat) the rubber inserts and damage the entire suspension device!
The high-quality rider is made of friction resistant industrial plastic and allows the use on both rider sides. The max. permissible chain speed should not exceed 1.5 m / sec.
The roller is made of high-quality industrial plastic material with two self-lubricating ball bearings 2Z.C3.
The tensioning roller is made of industrial plastic material with two self-lubricating ball bearings 2Z.C3 and is designed for light-duty drives.
The ROSTA sprocket wheel set completes the tensioning element for applications in chain drives. The sprocket wheel runs on a self-lubricating ball bearing 2Z.C3.
ROSTA modules should be connected on machine parts/structures by means of the standardized clamps and brackets. Relevant welded connections would affect (overheat) the rubber inserts and damage the entire suspension device!
