ACOUSTICAL DIRECT FIXATION FASTENERS

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ADFF

LOWER NOISE AND VIBRATION

Progress Rail’s ADFF was created to provide noise and vibration attenuation expected from high resilient DF units while matching the anchor bolt patterns and rail seat elevation of standard DF units. Until now, that has never been done. The acoustical performance has been verified by independent, recognized acoustical track experts and we have been awarded multiple contracts to date. High Attenuation DF products have been a specialty of Progress Rail for over 35 years and this product is a significant step forward in DF innovation and evolution.

ADFF
ADFF
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ADFF

To learn more about ADFF, and what the blue and green lines in the graphic represent, please click below to email Scott Osler or phone 631-831-8831.

EMAIL SCOTT

TECHNICAL DETAILS

Dimensions: 

  • 16" Body Length
  • 6" Wide
  • 1 - 7/8" Rail Seat Elevation
  • 5 - 9/16" Rail Base Width (for 115RE rail)

Weight

  • 25 lbs. Body Only
  • 0.3 lbs. Gauge Adjustment Plate
  • 1.7 lbs. e-Style Clip

Metal Parts: Top plate, containment frame, gauge adjustment plates are all ASTM A536 65-45-12 ductile iron

Elastomer: 

  • Natural Rubber
  • 40-70 Durometer

Assembly: Metal parts fully bonded together with elastomer

Anchor bolts: 7/8" diameter grade 5 bolts

Rail Clip: e-Style Clip

ADFF Performance:

  • Nominal Stiffness: 50,000 lbs/in +/- 20%
  • Dynamic-To-Static Ratio < 1.45
 
*Weights and dimensions are approximate, not exact

FASTENERS CONTACTS

FREIGHT

 

Jose Mediavilla

Director of Technical Services - Freight
913-313-7979  

EMAIL
PASSENGER

 

Scott Osler

Director of Technical Services - Passenger Rail 
631-831-8831   

EMAIL