Flexotech Seismic Spring Mount
Earthquake-Resistant Spring Isolators with Vertical & Horizontal Restraints
Seismic Spring Mounts from Flexotech are designed to meet seismic code requirements and ensure the stability of heavy equipment during earthquakes or sudden shocks. These mounts feature heavy-duty steel springs enclosed in a rugged housing with built-in restraints to prevent displacement in all directions (vertical, horizontal, and lateral).
Design Features
All-directional snubbing with seismic-rated restraints
Spring deflection range from 25 mm to 75 mm (customizable)
Low natural frequency (~3–5 Hz) for effective isolation
Base plate with pre-drilled holes for secure anchoring
Optional neoprene pad base for extra vibration absorption
Compliant with international seismic building codes
Key Benefits
Protects machinery during earthquakes or structural movement
Provides excellent low-frequency isolation
Supports dynamic equipment like large AHUs, chillers, fans
Minimizes risk of equipment toppling or shifting
Combines shock resistance with vibration damping
Typical Applications
HVAC Systems (Chillers, Cooling Towers, AHUs)
Industrial Fans and Blowers
Generators and Pumps in Seismic Zones
Hospitals, Data Centers, High-Rise Buildings
Equipment requiring code-compliant seismic protection
OPEN CONTROLLED SPRING MOUNT
Controlled Vibration Isolation for Rooftop & Low-Frequency Equipment
The Flexotech Open Controlled Spring Mount (OCS) is specifically engineered to isolate low-frequency vibrations while controlling excessive equipment movement. Ideal for rooftop installations or fluid-filled machines like chillers, the OCS mount provides both vibration isolation and directional restraint, preventing structural damage, equipment stress, and pipework failure.
The inclusion of vertical and lateral control mechanisms makes OCS mounts perfect for applications where wind loads, draining cycles, or accidental shifting may occur.
Design Features
Heavy-duty steel construction for long-term durability
Color-coded helical springs available in:
25 mm nominal deflection
50 mm high-deflection variant
Withstands up to 50% overload
Built-in vertical and lateral restraints to limit excess movement
Rubber-inserted contact points eliminate metal-to-metal contact
Spring assembly is peg-mounted with rubber sleeves to reduce high-frequency transmission
Adjustable leveling bolts and travel limiters for safe setup and maintenance
Benefits
Superior isolation of low-frequency vibration
Prevents damage from equipment shift due to wind or draining
Protects pipes, cables, and structural joints
Failsafe design for rooftop, marine, and industrial use
Reduces maintenance and improves equipment service life
Simplifies leveling and stabilizing heavy equipment
Applications
Cooling Towers on roofs
Water-cooled Chillers
Air Handling Units (AHUs)
Diesel Generators
Compressors, Pumps, and HVAC units
Seismic or wind-exposed installations
OPEN UNCONTROLLED SPRING MOUNTS
Advanced Vibration Isolation with Rubber-End Spring Technology
Flexotech Open Uncontrolled Spring Mounts are designed to isolate low-frequency vibrations produced by rotating and reciprocating machinery. These mounts feature a unique rubber end-fixing system that securely holds the spring in place, eliminating the need for loose components while also delivering built-in high-frequency vibration attenuation — even without the use of a rubber base pad.
These spring mounts are ideal for both free-standing installations and bolt-down applications, and can be used with viscous dampers for enhanced control of transient motion during start-up and shutdown cycles.
Design Features
Patented rubber-end fixing technology ensures spring stability and reduces
high-frequency noise
Available spring deflections: 20 mm, 25 mm, and 50 mm
50% overload capacity for high durability under fluctuating loads
Spring outer diameter ≥ 80% of compressed height ensures better balance
Constructed from zinc-plated metal for corrosion resistance
Can be used freestanding on a ribbed rubber pad or anchored to the structure
Height adjustable versions available in 25 mm and 50 mm deflection models
No snubbing design allows for maximum vibration isolation efficiency
Typical Applications
Axial and Centrifugal Fans
Air Handling Units (AHUs)
Low-Level Pipe Installations
With Inertia Bases for Pumps, Compressors, and Generators
HVAC Installations in Commercial and Industrial Settings
OPEN SPRING UNIT MOUNTS
Heavy-Duty Spring Mounts for Dynamic Loads & Harsh Environments
Flexotech Open Spring Unit Mounts are specifically engineered for equipment subjected to fluctuating loads and external forces, such as wind or vibration from surrounding systems. These units are ideal for rooftop machinery, structural frames, or concrete foundations that demand stable vibration isolation and safety under variable conditions.
What sets this mount apart is its integral rubber end-fix spring design, which ensures high-frequency noise attenuation even without rubber base pads. This smart construction eliminates loose components, simplifying installation and improving system durability.
Design Features
Integral rubber end-fixing prevents spring displacement and cuts high-
frequency vibration
Nominal 25 mm spring deflection, color-coded for load rating
50% overload capacity for dynamic load tolerance
Compatible with both bolt-down and free-standing setups
6 mm thick square-cell acoustic rubber pad for added sound/vibration dampening
High-strength all-steel frame, epoxy coated for long-term corrosion resistance
Zinc-plated fasteners for rust protection
Wide base stability using large-diameter color-coded helical springs
Typical Applications
Rooftop-mounted HVAC systems
Axial & Centrifugal Fans
Air Handling Units (AHUs)
Pipework with low elevation
Inertia Base Isolation for Pumps, Diesel Generators, Compressors
Heavy-duty machinery subject to wind and mechanical forces