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JP361 Open Spring Mount


Inertia base manufactured from fully welded carbon steel zinc plated frame complete with Type JP 361 open spring mounts.

Large inertia bases may be supplied in two or more sections, these should be bolted together and welded on site prior to filling with concrete.

Inertia bases will be sized on a ratio of 1: 1.5 and assuming concrete with a density of 2300 Kg/m³ will be used.

The anti-vibration mounts will be selected assuming equal load distribution on all mounts.


Stourflex inertia bases are designed to reduce the transmission of noise and vibration from equipment to building structures and associated pipework. When installed with Stourflex rubber bellows or pump connectors they will provide the solution to noise and vibration problems in plant rooms. For use on pumps compressors , generators, air handling equipment and other small items of machinery.

Please ask for pricing or more information.

Download data sheet
JP361 Inertia Bases & Anti-Vibration

our technical specifications

Our JP361 Open Spring Mount specifications

Part numberMaximum load at 15mm deflection (kg)Maximum load at 20mm deflection (kg)Length (mm)Width (mm)Height (mm)Fixing levelling bolt size (mm)
JP361-251225956080M8 x 65
JP361-502550956080M8 x 65
JP361-754075956080M8 x 65
JP361-10060100956080M8 x 65
JP361-15010015011280120M12 x 100
JP361-25016525011280120M12 x 100

Where higher load ratings or greater deflections are required please refer to open spring mount Type JP362.

Stourflex open spring mounts should be sized and positioned to equally distribute and balance the load and deflection on the item of plant or equipment requiring isolation.

Stourflex products should be installed in accordance with our fitting instructions.


Download data sheet