Features :
Fabricated of welded steel components incorporating thick neoprene elastomer pads molded to Bridge Bearing quality specifications, the design of these restraints allows for the removal and replacement of the neoprene elements. These restraints are designed for a minimum of 1.0g accelerated force in all directions. Series EFSS is suitable for loads from 250 kg to 11500 kg.
Installation instructions :
- Snubbers are inactive during normal operation and clearance must be maintained.
- To maintain clearances around isolation bushing, unit is furnished with spacer washers and a spacer bushing, these to remain in unit during installation only.
- If snubbers are installed on equipment such as blowers or pumps with flexible connections that move and remain in a different position during operation, final positioning and adjustment of snubbers must be made with equipment in operation.
- Use shims at brackets as required so that units are installed without applying pressure on spacer washers or bushing.
- After units are installed, remove spacer washers and bushing as follows:
- Remove lock nut from thru-bolt and remove thru-bolt.
- Remove anchor bolts from one bracket. If bracket was shimmed, note shim position.
- Remove bracket and remove spacer washers and spacer bushing.
- Reinstall bracket and thru-bolt. Shim as before if shims were used.
- Lock thru-bolt in place with jam nut.
Note : All Dimensions are in mm unless otherwise specified.
Description :
Model EFSRS-2 Seismic Snubber are designed for use in locations subject to earthquakes or other external forces which could displace resiliently supported equipment.
Snubbers, when anchored to the building structure and placed around vibration-isolated equipment, are intended to limit lateral motion by containing the supported equipment.
EFSRS-2 Snubber are designed to be used in pairs and will keep supported equipment contained when subject to lateral forces from any direction. EFSRS-2 Snubbers are not designed for use with high center of-gravity supported equipment or where vertical forces must be considered.
Model EFSRS-2 Snubbers are heavy structural steel weldments designed to minimize equipment motion without failing. Resilient neoprene pads on the contact surface reduce shock loads by cushioning the impacts. Large diameter anchor bolt holes allow loads to be safely transferred to the building structure.
Application
Building codes in many areas require building components to be capable of resisting forces created during a seismic event.
Equipment on resilient supports such as spring neoprene or fiber glass vibration isolators can undergo large motions relative to the building during such an event.
By using properly spaced and designed resilient snubbers around the equipment, motion can be limited and equipment can remain in place.
Model EFSRS-2 Snubbers are rugged, heavy duty products which have been designed to resist imposed forces from external sources, yet remain out of contact during normal operation so that vibration will not be transmitted to the building.
