Secondary Case Options

The slow speed gearbox is usually based on a Worm Bottom (WB) style.  A Worm Top (WT) unit can also be used.  We can also produce units with a Universal secondary case mounted Worm Bottom or Worm Top.

Mounting Positions

There is a seal between the gearcases and each case has an independent oil supply, which allows some flexibility in mounting positions.  When sidewall mounting with the output up is desired, the mounting position must be specified with the order so we can install a permanently sealed top bearing.  Consult Cleveland Gear for information on other mounting positions.

Case Sizes

The nominal size of DW units is based on the larger, secondary case, and the primary case is always three sizes smaller than the secondary case (for example, 50/80).  This fact allows you to easily find overhung load ratings, bearing and seal information from the appropriate single reduction section in this catalog.

Direction of Rotation

Using worm bottom units for the low speed  gearcase, the direction of shaft rotation will be the same for both input and output shafts, when viewed facing the input shaft.

C-face Available

Double reduction units are available in C-face Hollow Shaft and Coupling styles.  When ordering c-face LD, RD, LL and RR models, a spacer is required between the primary and secondary gearcase to provide adequate clearance for the flange.