JZP-3.0B-SC Rubber Shock Absorber Structure-Borne Acoustic Isolation 5-50Hz 4 Piece MOQ

A fan coil, a small air handling unit, a circulation pump or a duct bracket makes very little noise in its own casing. The noise appears two floors away, because vibration travels through steel and concrete with little loss and re-radiates as low frequency hum from floors, ceilings and partitions. Fitting an elastic element between the equipment and the structure interrupts that path. The JZP-3.0B-SC is that element: a bonded rubber body sized for 3.0 kg per support, in a 46 mm diameter by 30 mm high envelope that fits inside equipment rooms where a spring hanger cannot go.

• Structure-borne, not airborne. The mount works on the vibration path. Fan whine travelling through the air is a different problem and needs casing treatment, duct lining or an acoustic enclosure; the two measures complement each other but are not substitutes.
• Mid and low frequency band. Fan and pump excitation for small units usually sits between 15 Hz and 50 Hz, which is exactly the working band of this isolator with its loaded natural frequency of 7 - 15 Hz. That band is where the hum is heard clearly, because it is hard to mask with background sound.
• Small quantities are workable. With a four piece minimum order and rapid prototype tooling, one riser, one plant room or one sample fan coil can be treated and measured before the rest of the building package is committed.
• Submittal ready data. Frequency, transmissibility, dimensions and tolerances are published with their test conditions, and the working band is kept separate from the qualification sweep, so the selection can be defended in a consultant review.

• On fan coil and small air handling units: one mount per corner, on a stiff base rail, with the load passing vertically through the rubber element.
• On duct hangers: isolate every support point rather than alternating supports; a partially isolated run behaves like a rigid run at the un-isolated hanger.
• On pipe brackets: keep the bracket stiff and short so the mount, not the bracket, controls the deflection.
• Fit flexible connectors, braided hoses and cable slack at every connection before commissioning; check for bridges with the system running.
• Do not paint over the rubber or allow solvent, oil and ozone sources to sit against the element.
• Re-check fastener torque and mount height after the first week of operation, then at the normal maintenance interval.

Send the equipment mass, the fan or pump speed, the hanger spacing and the mounting detail, and we will confirm the number of JZP-3.0B-SC mounts needed and whether the excitation frequency falls inside the 15 - 50 Hz working band. Four piece minimum orders and rapid prototype tooling let a single riser or plant room be measured before the building package is released.