ACOUSTICAL DIRECT FIXATION FASTENERS
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.
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.
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
PASSENGER
Scott Osler
Director of Technical Services - Passenger Rail
843-642-1142