Type HSI - ROSTA

about product

The ROSTA Type AB oscillating mountings have created a good name for themselves as screen box suspensions in screening technology thanks to their high isolation effect, high level of lateral stability, security against overload and high resistance to corrosion.

For reasons related to the process, approximately 20 % of all screen and discharge chutes have suspended mounts under material bunkers and metering shafts. ROSTA Type AB oscillating mountings are also often used for the assembly of these vibration units, as a suspended screening machine can be directly connected to silos and bunkers using AB suspensions without having to organise complicated yoke constructions.

The new HSI suspensions (hanging screen) have a guide arm geometry that is designed for tensile loads. With ideal loading, the natural frequency of this suspension thereby sinks from its former 5.5 Hz to only approx. 3.5 Hz, which guarantees an isolating effect > 97 %. All HSI oscillating mountings are in stainless steel (AISI 304) and interchangeable with the blue HS oscillating mountings!

Customer benefits:

Direct installation under bunkers = No complicated yoke construction required
Low natural frequency of the suspension = Low residual vibrations in the silo structure and the building
High lateral stability = Short, controlled and safe run-out of the vibrating machine

specifications & cad

ART NR.

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Description	Art. No.	Type	Load capacity G [N]	Natural frequency Gmin. – Gmax. [Hz]	A	A max. load	B	B max. load	C	D	E	F	H	K	L	N	M	Z	Weight [kg]	Note
Free oscillation systems Type HSI 15	07 321 101	HSI 15	150 - 400	5.2–4.7	99	125	53	42	45	ø7	50	65	3	10	40	25	52	35	0.8	tensile load and cold flow compensation (after approx. 1 year).
Free oscillation systems Type HSI 18	07 321 102	HSI 18	300 - 700	4.5–4.0	127	159	69	56	60	ø9	60	80	3.5	14	50	30	67	50	1.5	tensile load and cold flow compensation (after approx. 1 year).
Free oscillation systems Type HSI 27	07 321 103	HSI 27	500 - 1250	4.2–3.8	164	202	84	68	70	ø11	80	105	4.5	17	60	35	80	60	3.4	tensile load and cold flow compensation (after approx. 1 year).
Free oscillation systems Type HSI 38	07 321 104	HSI 38	1200 - 2500	3.6–3.3	223	275	114	92	95	13 x 20	100	125	6	21	80	40	104	90	7.3	tensile load and cold flow compensation (after approx. 1 year).
Free oscillation systems Type HSI 45	07 321 105	HSI 45	2000 - 4200	3.3–3.0	265	325	134	109	110	13 x 26	115	145	8	28	100	58	132	100	13.6	tensile load and cold flow compensation (after approx. 1 year).
Free oscillation systems Type HSI 50	07 321 106	HSI 50	3500 - 8400	3.2–2.9	288	357	148	118	120	17 x 27	130	170	12	40	120	60	165	120	22.3	tensile load and cold flow compensation (after approx. 1 year).
Free oscillation systems Type HSI 50-2	07 321 107	HSI 50-2	6000 - 14000	3.2–2.9	288	357	148	118	120	17 x 27	130	170	12	45	200	70	250	120	35.8	tensile load and cold flow compensation (after approx. 1 year).