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BA? & Double U Shear?

BA? & Double U Shear?

BA? & Double U Shear?

Product catalog summary
Overview: The document provides technical specifications and application guidelines for Novibra® type BA and Metalastik® type Double U-Shear mountings. These mountings use bonded rubber in shear to allow high deflections, offering excellent isolation of low frequencies.
Specifications:
  • Type BA 20/2 is suitable for very light loads.
  • On rotating equipment, the soft axis should be perpendicular to the shaft, while on mobile applications, the stiff axis should align with the direction of travel.
  • Suitable for isolating vibrations from low-speed machines and protecting sensitive equipment from shocks.
Applications:
  • Transit cases
  • Light fans and compressors
  • Gauging equipment
  • Portable gensets and pumps
  • Computers and electronic units
  • Measuring and test instruments
Technical Data:
  • Part numbers and dimensions are provided for different IRH (International Rubber Hardness) values.
  • Stiffness values in load-deflection diagrams refer to shear mode, with compression stiffnesses being multiple times larger.
Selection Procedure:
  1. Determine the load per mounting (kg).
  2. Identify the interfering frequency (Hz), calculated as rpm/60.
  3. Select the correct load line in diagram 1 and interference line in diagram 3.
  4. Find the intersection point for the required type of mounting.
  5. Connect this point vertically down to the interference line in diagram 3 to determine the degree of isolation.
  6. Refer to diagram 2 for static deflection.
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Catalog excerpts

BA? & Double U Shear?-1

Novibra® type BA and Metalastik® type Double U-Shear mountings utilise bonded rubber in shear to permit relatively high deflections. Provides excellent isolation of low frequencies. (Type BA20/2 is a half section suitable for very light loads). On rotatingequipmentapplications the soft axis should be at right angles to the shaft. On mobile applications the stiff axis should be aligned in the direction shear (soft) load-deflection selection diagrams refer to shear mode. Compression Metalastlk®type Double U Shear™ Novibra® type BA and Metalastik® type Double U-Shear are equally suitable for isolating vibrations from low speed machines and equipment. Protects sensitive and lightweight units from external shocks and vibrations. Type BA and Double U-Shear are easy to install and ideal ▼ Light fans and compressors T Portable gensets and pumps Computers and electronic units T Measuring and test instruments Double U-Shear

 Open the catalog to page 1
BA? & Double U Shear?-2

Note: The natural frequencies and degrees of isolation are based on dynamic characteristics of the mountings. To select correct mounting, following data Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation For static deflection, see diagram 2. Novibra® Trellextreme®

 Open the catalog to page 2

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