top shadow
railroad

Model WR5 Fail-Safe Retarder watch video   |   download sales sheet   |   view parts
 

  • The WR5 skate retarder is designed to stop cars and hold them in position. The WR5 is weight responsive, providing more braking force to heavy cars and less force to lighter cars. Built on the same proven platform as the F4, the WR5 employs a fail-safe normally closed design. This allows for positive stopping power in the event of a power loss.

  • Retarder Rating (MPH)
    Retarder
    Length    		 No. of
    Lever Units    		 Maximum Entering Speed
    33 Wheels 36 Wheels 38 Wheels
    4' – 7" 2 3.0 3.0 2.9
    9' – 2" 3 4.3 4.2 4.1
    13' – 9" 4 5.2 5.12 5.0
    18' – 4" 5 6.1 5.9 5.8
    22' – 11" 6 6.8 6.6 6.5
    27' – 6" 7 7.4 7.2 7.1
    32' – 1" 8 8.0 7.8 7.7
  • Field Test Performance
    Retarder Squeezing Force (lbs) Friction Coefficient Friction Force (lbs) Advertised Energy Removal
    AR2 29.333 0.42 12,319 350,000 ft lbs
    Competitor 34,000 0.42 14,280 Not Known
    F4
    (Light Car)    		 9,457 0.42 3,971 1.99 feet
    Velocity Head
    WR5
    (Heavy Car)    		 56,745 0.42 23,832 1.99 feet
    Velocity Head
bottom image
© 2010 AAA Sales & Engineering, Inc. All rights reserved.spacer home  |  about us  |  sitemap  |  careers  |  contact us