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ROSTA suspension elements for vibratory screens and feeders work better than conventional coil springs

Strong directional force

Long service life

Predictable maintenance

Downtime is not tolerable if you can't plan for it.

If you can't predict coil spring failure you waste money with downtime. Coil springs are typically not a shelf item which adds to your downtime.

ROSTA suspension elements don't fail catastrophically

The most expensive cost is unpredictable downtime. Coil springs and ROSTA suspension elements are wear items with one significant difference. ROSTA suspension elements wear out, and the rubber elements slump and compress over time but keep shaking with less performance. This allows operators to act proactively and change the ROSTA suspension elements in planned service downtime. On the other side, coil springs tend to burst and break without notice, shutting down your processing operation.


Why do coil springs fail?

Coil springs are cost-effective for building screen boxes and feeders but can fail without notice. This is primarily due to material fatigue due to the flexing movement. The coil spring’s top and bottom are fixed while the middle part flexes aggressively, which becomes a natural weak point.


The resonance frequency adds stress to frames.

The resonance frequency stresses the springs, frame, and welding spots during the start-up and shutdown of screen boxes and feeders. It causes the screen-box or hopper to shake violently. Some manufacturers have tried various solutions for a smooth start that are merely a band-aid to the problem rather than solving it profoundly. ROSTA suspension elements don't experience the same resonance frequency vibrations, which extends the service life of feeders, screen-boxes, and the suspension elements themselves.


How do ROSTA suspension elements work?

ROSTA suspension elements hop the material forward and don't wobble in every direction. It consists out of an outer housing that contains an inner square surrounded by four rubber cords. According to ROSTA, the high-performance elastomer rubber compound at its core is a special secret ingredient.


Benefits of ROSTA suspension elements over traditional coil springs

➕ strong directional forward pitch

➕ no violent shaking during during start-up/shut-down

➕ longer service life

➕ predictable downtime

➕ better corosion resistance

➕ feeder/screen-box don't need to be secured for hopping out of (coil) springs during transport or resonance frequency

➖ significant higher costs

➖ sensitive to side movements

Impact Crushers All RUBBLE MASTER impact crushers utilize ROSTA suspension elements.
Inlet opening
Transport dimension
RM 120X
Impact Crusher
350 tph 385 TPH
1,160 x 820 mm 46" x 32"
44,000 kg 95,000 lbs
16,180 x 2,990 x 3,600 mm 52‘10” x 9`11” x 10’6“
learn more
RM 100GO! Compact Crusher RM 100GO!
Impact Crusher
250 tph 275 TPH
950 x 700 mm 37" x 28"
33,600 kg 74,500 lbs
14,700 x 2,860 x 3,155 mm 48'3" x 9'5" x 10'5"
learn more
RM 90GO! Compact Crusher RM 90GO!
Impact Crusher
180 tph 200 TPH
860 x 650 mm 34" x 25"
28,400 kg 62,500 lbs
13,470 x 2,550 x 3,050 mm 44'2" x 8'5" x 10'
learn more
RM 70GO! Compact Crusher RM 70GO! 2.0
Impact Crusher
150 tph 165 TPH
760 x 600 mm 30" x 23"
24,200 kg 53,400 lbs
13,300 x 2,360 x 3,100 43'8" x 7'9" x 10'2"
learn more

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