Anti-vibration mounts for transformers

A transformer hums at 100 Hz on a 50 Hz grid, day and night. In a building, that hum reaches the next rooms and the neighbours through the structure.

What to consider

At 100 Hz, fairly stiff mounts isolate well: the point is to stop the hum reaching the slab.
Very large transformers: a floating slab under the transformer, as in Endesa's substations.
In seismic zones, with restraint and calculated anchors.

Isolators for transformers

23 products

Single anti-vibration springs

Load: 5–730 kg
Nat. freq.: 3–9 Hz

Anti-vibration mounts for transformers

Load: 50–1,120 kg
Nat. freq.: 3–4 Hz

Rubber buffer

Load: 5–14,000 kg
Nat. freq.: 2.5–7 Hz

Machine levelling feet

Load: 25–7,000 kg
Nat. freq.: 15 Hz

Spring isolator

Load: 390–8,760 kg
Nat. freq.: 3–9 Hz

FLEXAMOR vibration mounts

Load: on request
Nat. freq.: on request

Vibration mounts S120 — S125

Load: 120–7,000 kg
Nat. freq.: 13–20 Hz

Sandwich vibration mounts

Load: 2,500–25,000 kg
Nat. freq.: 10 Hz

Double springs with retention

Load: 80–1,460 kg
Nat. freq.: 7–9 Hz

Anti-vibration floating slab

Load: on request
Nat. freq.: 1–4.5 Hz

Container Pad Seismic Vibration Isolator

Load: 100–10,000 kg
Nat. freq.: 3–9 Hz

Stainless axial vibration mounts

Load: 70–1,400 kg
Nat. freq.: 15–25 Hz

Square and oval base vibration mounts

Load: 42–5,000 kg
Nat. freq.: 15–20 Hz

Vibration mounts S402

Load: 30–700 kg
Nat. freq.: 15–20 Hz

Vibration mounts 954202-954203

Load: 50–7,000 kg
Nat. freq.: 11–22 Hz

Equal-frequency vibration mount

Load: 4–3,125 kg
Nat. freq.: 2–8 Hz

Vibration mounts 954412

Load: 1,000–3,000 kg
Nat. freq.: 15–20 Hz

Axial BF rubber vibration mounts

Load: 80–114 kg
Nat. freq.: 5 Hz

Non-Raised Floor Plinth, seismic plinth for racks

Load: 100–1,500 kg
Nat. freq.: 4–5 Hz

Oval base metallic silentblock

Load: 20–50 kg
Nat. freq.: 40–60 Hz

VIBRALOCK washer

Load: on request
Nat. freq.: on request

Vibration mounts 954201

Load: 50–900 kg
Nat. freq.: 18–25 Hz

Vibration mounts 954416

Load: 350–3,000 kg
Nat. freq.: 15–25 Hz

Sectors where it is common

Case studies, references and where each mount goes in each sector.

Related equipment

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