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damping, pressing, guiding

Suspension

Elastic suspension for all types of screening machines and shaking conveyors. ROSTA offers the widest range of oscillating mountings. From standard mounts to heavy duty. Also available in stainless steel.
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ROSTA offers suspension systems with the highest levels of isolation and efficiency for all free oscillating vibrating systems, from onion sorting shakers to dewatering screens in mines.
Product information
For over 60 years ROSTA has supplied many screens and vibrating conveyor manufactureres with our oscillating mountings. We can certainly say, that this one is our core business.

Is it a free oscillating or guided shaker conveyor? Or even a gyratory sifter? Contact us we have the right solution for your system.
product selection tool
ROSTA STANDARD TORSION SPRING SELECTOR

Standard ROSTA Element size 'A x B'

Lever/Arm Length 'L' [mm]

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Selection tool recommendations are general in nature and may not be suitable for specific applications and installations. Consider the comprehensive product data and guidelines provided in the ROSTA catalogue and other resources. For further assistance, contact your local ROSTA representative
Torsion AngleTorqueMax. Force
0.4Nm 1.0N
10˚ 1Nm 2.5N
15˚ 1.6Nm 4.0N
20˚ 6.0Nm 1.0N
25˚ 8.8Nm 1.0N
30˚ 4.8Nm 12.0N
Comments:
1. All of the values provided are based on standard ROSTA rubber compound: Rubmix 10. Other rubber compounds are available.
2. ROSTA non-standard and dual elements are available.
3. Not inclusive of cold flow effect.
types
90-07092018-039707

Type DK-A

Round housing and inner square section made of light alloy profiles, inner square section with four "throughbores", the lever arms can be bolted on and, if necessary, the bores can be tapped, too.

Both ways provide an excellent connection without play which is necessary in order to transmit alternating motion by passing the neutral position in either direction. All metal parts are paint-finished.

see details

90-07092018-041156

Type DK-S

Round housing and inner square section made of light alloy profiles, inner square section with four "throughbores", the lever arms can be bolted on and, if necessary, the bores can be tapped, too.

Both ways provide an excellent connection without play which is necessary in order to transmit alternating motion by passing the neutral position in either direction. All metal parts are paint-finished.

see details

90-07092018-045533

Type DO-A

Housing up to size 45 made out of light alloy profile, size 50 made out of spheroidal graphite cast iron, inner square section made out of light alloy profile with four "throughbores".

The levers can be mounted on one or both sides by means of bolts. It provides an excellent attachment without play which is most important in order to transmit alternating motions by passing the neutral axis in either direction. All metal parts are paint-finished.

see details

90-07092018-044526

Type DR-A

Steel housing with inner square section made of light alloy with four small bores. Levers can be mounted on one or on both sides by means of bolts.

Type DR-A with two or four through bores, especially constructed for transmitting alternating motions by passing the neutral axis in either direction. All metal parts are paint-finished.

see details

90-07092018-044885

Type DR-C

Steel housing with inner square section made of light alloy with one big through bore. Levers can be mounted on one or on both sides by means of bolts. Type DR-C with central bore.

The frictional force of this type assures a safe fixation of the lever arms in any position. All metal parts are paint-finished.

see details

90-07092018-045802

Type DR-S

Housing made out of steel, inner square section made out of steel tube for mounting "plug-in" lever arms on one or both sides. The inserted part should be at least three times longer than the clearance "C".

Up to type DR-S 18 the lever arms can be mounted by one through-bolt and the levers are then fixed by frictional force at any position within 360°. Both ways of fixation are particularly well suited for motions at the plus or minus angular range (no alternating motions across the neutral axis = play). All metal parts are paint-finished.

see details

90-07092018-049893

Type DW-A 15-38

The housings of the element sizes DW-A 15 to 38 are made out of light alloy profile and are equipped with lateral fixation flanges, including the required fixation bores for direct mounting on customers machine part. Inner square sections made out of light alloy profile with four small through bores or one central through bore.

Levers can be mounted on one or on both sides by means of bolts. Type DW-A with two or four through bores, especially constructed for transmitting alternating motions by passing the neutral axis in either direction. All metal parts are paint-finished.

see details

90-07092018-050659

Type DW-A 45-50

The housings of the element sizes DW-S 45 and 50 are made out of spheroidal cast iron, with inner square sections made out of aluminum. The inner square can be used for mounting "plug-in" lever arms on one or both sides.

The element installation has to be effected by bolting the two support angles on customers machine parts. These elements have especially been constructed for transmitting alternating motions by passing the neutral axis in either direction. All metal parts are paint-finished.

see details

90-07092018-048995

Type DW-A 60-100

The housings of the element sizes DW-A 45 to 50 are made out of spheroidal cast iron, with inner square sections made out of light alloy profile. Up from size 60, with housings made out of welded steel construction, with inner steel square sections including four threaded bores on each side for the easy fixation of levers and machine parts.

The element installation has to be effected by bolting the two support angles on customers machine part. These elements have especially been constructed for transmitting alternating motions by passing the neutral axis in either direction. All metal parts are paint-finished.

see details

90-07092018-048259

Type DW-C 15-38

The housings of the element sizes DW-C 15 to 38 are made out of light alloy profile and are equipped with lateral fixation flanges, including the required fixation bores for direct mounting on customers machine part. Inner square sections made out of light alloy profile with four small through bores or one central through bore.

Levers can be mounted on one or on both sides by means of bolts. Type DW-C with central through bore. The frictional force of this type assures a safe fixation of lever arms in any position. All metal parts are paint-finished.

see details

90-29042019-037393

Type DW-C 45-50

The housings of the element sizes DW-C 15 to 38 are made out of light alloy profile and are equipped with lateral fixation flanges, including the required fixation bores for direct mounting on customers machine part. Inner square sections made out of light alloy profile with four small through bores or one central through bore.

Levers can be mounted on one or on both sides by means of bolts. Type DW-C with central through bore. The frictional force of this type assures a safe fixation of lever arms in any position. All metal parts are paint-finished.

see details

90-07092018-047816

Type DW-S 15-38

The housings of the element sizes DW-S 15 to 38 are made out of light alloy profile and are equipped with lateral fixation flanges, including the required fixation bores for direct mounting on customers machine parts.

The inner square sections are made out of electrodeposited galvanic zinc coating steel. The inner square can be used for mounting "plug-in" lever arms on one or both sides.

see details

90-07092018-047627

Type DW-S 45-50

The housings of the element sizes DW-S 45 and 50 are made out of spheroidal cast iron, with inner square sections made out of steel tube. The inner square can be used for mounting "plug-in" lever arms on one or both sides.

The element installation has to be effected by bolting the two support angles on customers machine parts. These elements have especially been constructed for transmitting alternating motions by passing the neutral axis in either direction. All metal parts are paint-finished.

see details

Explore ROSTA

Many companies worldwide value our products and recommend them to others. But read for yourself what our customers have to say about their experiences with us.
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core technology
The ROSTA Element, an elastomer powered torsional spring, is central to our range of specialised machine components designed to provide a combination of useful functions. ROSTA components offer dependable performance across a broad spectrum of industrial applications
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Durable outer housing.

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Precision crafted inner section
featuring multiple connection options.

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Specialized, high-performance elastomer compound cords.

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refurbish
Select ROSTA elements are capable of being refurbished by replacing either the rubber cords, the inner mounting or the outer housing. Not only is this efficient, but its great for the environment as well.

Contact Sales to learn more about our refurbishment options.
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ACCESSORIES
90-03082018-038646

Type BK

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 clamps are supplied separately without bolts. They are standardized to fit exactly for the fixation and positioning of the ROSTA rubber suspension units type DK-S and DK-A by frictional force created by the bolted double clamp. For longer units two or more clamps are recommended. All clamps are paint-finished.

see details

90-07092018-039294

Type BR

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 clamps are supplied separately without bolts. They are standardized to fit exactly for the fixation and positioning of the ROSTA rubber suspension units type DR-S, DR-A and DR-C without any welding. For longer units two or more clamps are recommended. The clamps are paint-finished.

see details

90-29102018-042877

Type Chain Rider Type P

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.

see details

90-29102018-039553

Type Roller Type R

The roller is made of high-quality industrial plastic material with two self-lubricating ball bearings 2Z.C3.

see details

90-29102018-039708

Type Roller Type RL

The tensioning roller is made of industrial plastic material with two self-lubricating ball bearings 2Z.C3 and is designed for light-duty drives.

Plastic material: PA 6, black

see details

90-29102018-042682

Type Wheel N

The sprocket wheel runs on a self-lubricating ball bearing 2Z.C3.

see details

90-29102018-041952

Type Wheel set - type N

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.

see details

90-07092018-047466

Type WS

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!

This multi-purpose brackets make an easy screw connection possible on the inner squares of the ROSTA rubber suspension units type DR-A, DK-A and DO-A (as well as a housing fixation of the tensioner devices type SE). The base of the angle section can be positioned in both directions and offers together with the different clamps many combination possibilities of the element assembling. The brackets are paint-finished.

see details

other products
Elastic suspension for all types of screening machines and shaking conveyors. ROSTA offers the widest range of oscillating mountings. From standard mounts to heavy duty. Also available in stainless steel.
contact us
Get in touch with us. Find your ROSTA company or the ROSTA distribution partner in your country or nearest to you and let us know how we can support you to make you successful in your market.
+41 (0)62 889 04 00
info.ch@rosta.com
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