Page 140 - SF RAIL CAT_V2.0_WEB_F2-UPDATE-02-11-18
P. 140

CHOCKS – ALDON
       CHOCKS







          CAST STEEL WHEEL CHOCKS - INFO (MADE IN USA)

          Why Use Wheel Chocks?
      LOCOMOTIVES & RAIL CAR STOPPING DEVICES
          A gust of wind is enough to cause a 118,000kg
          freight car to start rolling. Thanks to roller bearings,
          freight car wheels offer very little resistance to
          movement. In fact, the contact area of each wheel
          on the rail is smaller than the size of a dime. This is
          why moving heavy loads by rail is so efficient! But
          at the same time, all this mass, so easily moved,
          needs to be securely blocked while the car is being
          worked.

          Loading freight cars increases the strain on the
          car brakes. Liquid pouring into a tank car or a
          forklift moving back and forth in a boxcar create
          dynamic forces which can overcome the holding
          power of the brakes. slack in mechanical car brakes
          can be enough to allow a wheel to move forward
          approximately 50mm and dislodge a dock board or
          strain a hose line. This why OsHA mandates the use
          of wheel chocks in addition to car brakes wherever
          rail cars are being worked.                      Photo by courtesy Baden Tidd
          Aldon Chocks have the Edge

          In 1955 Aldon Company introduced cast steel chocks with the unique feature of
          replaceable spurs (or teeth). The spur is the key to effective chocking. Under wheel
          pressure the spur bites into the hard, smooth surface of the rail to keep the chock
          from sliding. But eventually, like the blade of a knife, the spur edge will become dull
          from use. A dull spur can’t bite into the rail to keep the chock from sliding. You can
          keep the sure grip of an Aldon wheel chock by turning the spur to three new sharp
          edges and then replacing the spurs at nominal cost instead of buying a new wheel
          chock.

          It’s easy to turn and replace worn spurs in Aldon Chocks
          Chock spurs have four edges. When the first edge becomes
      www.specialisedforce.com.au
          dulled from use, you can tap the spur out of its slot and
          re-insert it with a fresh edge exposed. By turning the spurs            SCAN
          at intervals you extend the service life and effectiveness             & PLAY
          of your wheel chock. Ask for our free booklet on changing
          out spurs or go to www.aldoninfo.com and watch our two-
          minute video on chock spur maintenance.

          MODEL NO. 6008
          Replacement Spurs

          Made of 12.7mm sq. tool steel, heat treated for a hard and sharp edge.






















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