AC Fiberglass Vibration Isolator

Kinetics Model AC is a bolt-down fiberglass vibration isolator for utility ventilating fans, vane axial fans, high-speed motors, roof-mounted exhaust fans and similar mechanical equipment. It combines a precompressed inorganic fiberglass isolation element with a steel load-transfer plate, formed hold-down bracket and neoprene-grommeted equipment anchor bolt. AC isolators provide capacities from 40 to 900 lb and rated static deflections from 0.18 to 0.70 in. Kinetics Group provides product selection, technical submittals and project support across the UAE, GCC, Middle East and MENA region.

Product Details

Engineered for Performance.

Product Description

Kinetics Model AC is a bolt-down fiberglass vibration isolator engineered to reduce audible-frequency vibration, structure-borne noise and mechanical equipment movement. The isolator is designed for utility ventilating fans, vane axial fans, high-speed motors, roof-mounted exhaust fans and similar floor-mounted HVAC or mechanical equipment.

Model AC combines the predictable dynamic response and permanent load-support characteristics of precompressed fiberglass with a steel load-transfer plate, formed bolt-down bracket and vertical lift-control feature. Kinetics Group provides AC isolator selection, technical documentation and project support for consultants, contractors and equipment suppliers across the UAE, GCC, Middle East and MENA region.

What Is an AC Fiberglass Vibration Isolator?

The AC is a floor-mounted vibration isolation product consisting of a molded inorganic fiberglass isolation element bonded to a steel load-transfer plate and a formed steel bolt-down bracket.

An equipment mounting bolt and neoprene grommet are incorporated to help prevent unintended metal-to-metal contact at the equipment attachment point. The complete fiberglass element is coated with a flexible, moisture-impervious elastomeric membrane.

The mount is selected where equipment must be securely bolted to its supporting structure while retaining resilient vibration isolation and vertical lift control.

How the AC Fiberglass Mount Controls Vibration

Rotating mechanical equipment can transmit vibration through its base and equipment supports into a slab, pier or adjoining building structure. Once transmitted into the structure, this mechanical energy may be experienced as vibration or radiated as audible noise in nearby occupied areas.

The precompressed fiberglass element introduces a resilient separation between the equipment and supporting structure. The fiberglass media provides controlled viscous damping, high energy dissipation and a predictable dynamic response.

Fiberglass isolation media is also characterised by an essentially constant natural frequency over a wide operating-load range. Its stiffness increases proportionately as the applied load increases, supporting stable performance across the approved operating range.

AC Fiberglass Isolator Applications

  • Utility ventilating fans
  • Vane axial fans
  • High-speed electric motors
  • Roof-mounted exhaust fans
  • Ventilation and air-movement equipment
  • Similar mechanical equipment requiring bolt-down installation
  • Equipment installed on grade-supported slabs or piers
  • Applications requiring audible-frequency vibration or noise isolation
  • HVAC and MEP equipment in commercial and industrial buildings
  • Mechanical rooms, plant areas and external equipment locations

For mechanical equipment vibration isolation, AC mounts are intended for equipment with a lowest operating speed of 1750 RPM when the equipment is installed on a grade-supported slab or pier.

Published Capacity and Deflection Range

Technical Property Published AC Range
Load capacity 40 to 900 lb
Approximate metric load capacity 18 to 409 kg
Rated static deflection 0.18 to 0.70 in.
Approximate metric deflection 4 to 18 mm
Isolation media Precompressed molded inorganic fiberglass
External coating Flexible moisture-impervious elastomeric membrane
Equipment connection Mounting bolt with neoprene isolation grommet
Structural connection Formed steel bolt-down and hold-down bracket

Selection notice: The published figures represent the overall AC product range. The correct model must be selected according to the operating load imposed at each individual support point and the static-deflection requirement stated in the project’s vibration-isolation schedule.

Manufacturer-Based Technical Data

The AC construction, application, capacity and deflection information published on this page is based on Kinetics Noise Control Model AC technical literature. Final isolator selection must be confirmed for the actual operating load at each equipment support point and the required static deflection shown in the approved project documents.

Kinetics Group provides regional product-selection, submittal and project support for consultants, contractors and equipment suppliers across the UAE and MENA region.

AC Fiberglass Mount Features and Benefits

  • Precompressed molded inorganic fiberglass isolation media
  • Flexible, moisture-impervious elastomeric coating
  • Constant natural frequency over a wide operating-load range
  • Predictable dynamic response
  • Permanent fiberglass load-support characteristics
  • High energy dissipation
  • Controlled viscous damping
  • Load capacities from 40 to 900 lb / 18 to 409 kg
  • Rated static deflections from 0.18 to 0.70 in. / 4 to 18 mm
  • Steel load-transfer plate
  • Formed steel bolt-down and hold-down support bracket
  • Equipment mounting bolt with neoprene grommet
  • Helps prevent metal-to-metal contact at the equipment connection
  • Provides bolt-down installation and vertical lift control
  • Suitable for audible-frequency vibration and noise isolation

 

Precompressed Fiberglass Isolation Media

The AC isolation element is manufactured from fine bonded glass fibers that are stabilised by precompression during manufacture. The fibers have a published maximum diameter of 0.00027 in. / 6.8 microns.

Precompression helps produce permanent load-support characteristics and a predictable dynamic response. The element is individually coated with a flexible elastomeric membrane that provides a moisture-impervious external surface.

Bolt-Down and Vertical Lift Control

Model AC is selected when fiberglass vibration isolation is required together with a positive equipment attachment and hold-down arrangement.

The fiberglass element is bonded between the steel load-transfer plate and formed steel bracket. The bracket can be anchored to the supporting structure, while the equipment mounting bolt connects the supported equipment through a neoprene grommet.

This configuration provides a practical solution for applications where equipment must be bolted to its support while avoiding a direct metal-to-metal connection through the isolation mount.

AC Isolator Selection Requirements

Do not select the AC model from the total equipment weight alone. The operating load at each individual support point must be calculated because equipment weight may not be distributed equally between the mounts.

Provide the following information for technical selection:

  • Equipment type and model
  • Total operating weight
  • Operating load at each support point
  • Number and position of mounting points
  • Equipment operating speed in RPM
  • Required static deflection
  • Supporting structure type
  • Grade-supported slab, pier or structural-floor installation
  • Indoor, rooftop or exposed application
  • Equipment mounting-hole arrangement
  • Wind-uplift or vertical restraint requirements
  • Project specification and vibration-isolation schedule

Final AC model selection must be completed or confirmed by the manufacturer or authorised Kinetics technical team for the specific application.

Selection and Installation Notes

  1. Confirm the approved AC model and load at every equipment support point.
  2. Install the isolators only in the positions shown on the approved equipment or vibration-isolation submittal.
  3. Provide a flat and adequately sized supporting surface beneath each mount.
  4. Use the formed lower bracket for the specified bolt-down connection to the supporting structure.
  5. Connect the equipment through the supplied or approved equipment mounting arrangement.
  6. Retain the neoprene grommet at the equipment anchor bolt to prevent an unintended rigid metal-to-metal connection.
  7. Do not substitute mount sizes or capacities without technical approval.
  8. Check the supported equipment level and mount loading after the complete operating weight has been applied.
  9. Coordinate anchoring, wind loads and structural attachment with the approved project details.

The approved project submittal, equipment manufacturer’s requirements and structural anchoring details take precedence over general website guidance.

AC Fiberglass Isolator or KIP Fiberglass Pad?

Model AC and Model KIP use fiberglass isolation media but serve different support arrangements.

Model AC incorporates a steel load-transfer plate, formed bolt-down bracket, equipment anchor bolt and vertical lift-control feature. It is used when the supported equipment must be positively attached to the mounting structure.

Model KIP is a fiberglass isolation pad available in different densities, thicknesses, sizes and support configurations. It is used beneath mechanical equipment, industrial machinery and within engineered floating-floor systems where the AC mount’s integral bolt-down bracket is not required.

Review the KIP Fiberglass Vibration Isolation Pads.

AC Fiberglass Mount or Neoprene Mount?

Fiberglass and neoprene isolators must not be treated as direct substitutes. Model AC is selected where the predictable dynamic response, controlled viscous damping and permanent load-support characteristics of fiberglass are required together with a bolt-down connection.

Neoprene mounts use molded elastomeric media with different load-deflection, damping and environmental characteristics.

For molded neoprene equipment isolation, review the RD and RDS Neoprene Vibration Isolation Mounts.

Technical Documentation

 

AC Fiberglass Isolator Support in the UAE and MENA

Kinetics Group supports HVAC contractors, MEP consultants, acoustic consultants, mechanical engineers, equipment suppliers, developers and procurement teams with AC isolator selection, technical submittals and project coordination.

Technical and commercial support is available for projects in Dubai, Abu Dhabi and throughout the UAE, as well as Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, the wider Middle East, North Africa and MENA region.

Contact Kinetics Group for AC fiberglass vibration isolator selection and project enquiries.

 

Frequently Asked Questions

What is an AC fiberglass vibration isolator?

Kinetics Model AC is a bolt-down fiberglass mount designed to reduce audible-frequency vibration and noise from floor-mounted mechanical equipment.

 

Which equipment can be mounted on AC fiberglass isolators?

Typical applications include utility ventilating fans, vane axial fans, high-speed motors, roof-mounted exhaust fans and similar mechanical equipment.

 

What is the capacity range of AC fiberglass isolators?

The published AC range provides capacities from 40 to 900 lb, equivalent to approximately 18 to 409 kg.

 

What static deflection is available?

AC fiberglass isolators provide published rated static deflections from 0.18 to 0.70 in., equivalent to approximately 4 to 18 mm.

 

What equipment speed is suitable for an AC isolator?

For mechanical equipment vibration isolation, AC mounts can be applied to equipment with a lowest operating speed of 1750 RPM when mounted on a grade-supported slab or pier.

 

How does the AC mount prevent metal-to-metal contact?

The equipment mounting bolt incorporates a neoprene grommet that resiliently separates the equipment connection from the steel mounting components.

 

How is the correct AC model selected?

The model is selected from the operating load at each support point, required static deflection, equipment speed, mounting arrangement and project vibration-isolation schedule.

 

What is the difference between an AC mount and a KIP pad?

Model AC includes an integral load-transfer plate, formed bolt-down bracket and equipment mounting connection. Model KIP is a fiberglass isolation pad used where an integral bolt-down bracket is not required.

 

Fiberglass Vibration Isolators

Need the Correct AC Isolator for Your Equipment?

Send Kinetics Group the equipment type, operating weight, support reactions, number of mounting points, operating speed, required static deflection and project location. Our technical team will assist with AC fiberglass isolator selection and submittal coordination for UAE, GCC and MENA projects.

Request AC Isolator Selection Support

Application

  • Vibration isolation for mechanical equipment operating from 1750 RPM
  • Utility ventilating fan support and isolation
  • Vane axial fan and high-speed motor installations
  • Roof-mounted exhaust fan vibration control
  • Mechanical equipment mounted on grade-supported slabs or piers
  • Bolt-down equipment isolation for HVAC and MEP systems
  • Isolated precast concrete roof systems requiring wind lift hold-down support

Features & Benefits

  • Molded inorganic fiberglass isolation media
  • Flexible, moisture-impervious elastomeric coating
  • Constant natural frequency over a wide load range
  • Predictable dynamic response for vibration isolation design
  • High energy dissipation and controlled viscous damping
  • Load capacities from 40 lbs. to 900 lbs. / 18 kg to 409 kg
  • Rated static deflection from 0.18″ to 0.70″ / 4 mm to 18 mm
  • Steel load transfer plate for equipment support
  • Formed steel bolt-down bracket with vertical lift control
  • Neoprene grommet helps prevent metal-to-metal contact
  • Suitable for rooftop, plant room, and mechanical equipment applications

Installation Guidelines

AC Fiberglass Vibration Isolators must be selected according to the actual operating load imposed at each support point and the static-deflection requirement stated in the approved vibration-isolation schedule.

  1. Confirm the approved AC model and support reaction before installation.
  2. Locate each mount according to the approved equipment or vibration-isolation submittal.
  3. Provide a flat and structurally adequate mounting surface.
  4. Anchor the formed steel bracket according to the approved structural detail.
  5. Connect the equipment through the specified equipment mounting bolt arrangement.
  6. Retain the neoprene grommet to prevent rigid metal-to-metal contact.
  7. Do not substitute mount models without technical approval.
  8. Check equipment level and isolator loading after the full operating weight has been applied.

Final AC model selection, anchoring and installation must follow the approved project submittal, structural details and equipment manufacturer’s requirements.

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