CUP-STYLE MOUNTS: L Mount Series

Low-frequency, highly damped mounts for a high level of vibration isolation.

Barry L-Mounts increase equipment reliability and extend component-life by providing isolation for frequencies as low as 10 Hertz and exhibiting low transmissibility at resonance (below 2.5) with .060" double amplitude vibratory input.

Applications
  • Avionic equipment in propeller driven aircraft
  • Sensitive instrumentation and medical equipment
  • Stationary applications where cost effective, low frequency isolation is required
Features
  • Marking of mounts with military designations available on special order
  • Aluminum construction
  • Axial to radial stiffness of 4:1
  • For base mounting only
  • Fail safe construction
Benefits
  • Isolation performance maintained in attitudes up to 10º from the horizontal
  • Low ratio of horizontal and vertical stiffness which holds transmissibility in rocking modes to unusually low magnitudes
  • Meets safety requirements of MIL-E-5400 (30G 11ms half sine pulse)
Load Range
  • L21/L22 = 7 load ranges from .35 - 4 lbs. per mount
  • L44 = 7 load ratings from .25 - 10 lbs. per mount
  • L64 = 7 load ratings from 2.0 - 40 lbs. per mount
Environmental Data
  • Operating temperature ranges of -67ºF to +250ºF (-55ºC to +120ºC).
  • Meets vibration and shock requirements of MIL-C-172C.
  • L44 and L64 isolators are known as "MS" (Military Standard) mounts and appear on QPL's.
Natural Frequency 7-10 Hertz
Transmissibility at Resonance 2.5
Resilient Element Friction damped spring
Standard Materials Aluminum
Weight L21 = 0.031 lbs.
L22 = 0.031 lbs.
L44 = 0.098 lbs.
L64 = 0.226 lbs.
Load Range | MS Designations
Dimensions and Performance Characteristics
L21 | L22 | L44 | L64