Double E Group's part numbering system was designed
to make it easy for our customers to place an order. There are two
formats for part numbers depending on whether the roll is a dead or live
shaft roll. Both part numbers begin by specifying the roll type using
the letter codes shown below.
Dead Shaft Idler Rolls
PART NO. : XX-RD-SD-RF-OS
EXAMPLE: SA-5.0-1.25-65.0-1500
The first part of the number is the letter code designating the type
of roll being ordered. "RD" is the Roll Diameter, "SD" is the Shaft
Diameter, "RF" the Roll Face, and "OS" the Operating Speed. So our
example is used for ordering a Standard Aluminum roll with a 5.0"
diameter, a 1.25" diameter shaft, a 65.0" Roll Face, and an Operating
Speed of 1500 F.P.M.
Live Shaft Idler Rolls
PART NO. : XX-RD-RF-OAL-OS
EXAMPLE: SAL-3.0-67.5-72.0-650
As with the dead shaft part number, live shaft part numbers begin with the letter code designating the type of roll being ordered. "RD" is the Roll Diameter, "RF" the Roll Face, "OAL" is the OverAll Length, and "OS" the Operating Speed. So the example is specifying a Standard Aluminum Live shaft roll, with a 3.0" Roll Diameter, a 67.5" Roll Face, and Overall Length of 72.0" and an Operating Speed of 650 F.P.M.