Table of Contents
Advertisement
GENERAL INFORMATION
MECHANICAL DESIGN
General
All single and two bearing units are
manufactured with cast iron end brackets
and adapters, and fabricated steel frames.
Flexible drive discs and SAE adapters are
machined to SAE standards. Pre-lubricated,
regreasable, shielded ball bearings are used
on MagnaMAX generators. Standard units
are fully guarded. Drip proof shields are
available as an option.
Conduit Box
The large end mounted conduit box is con-
structed of formed sheet steel that will allow
the addition of top mounted control
packages. Refer to Marathon Electric for top
mounted controls of more than 240 lbs.
There is ample room inside the conduit box
for a circuit breaker (through 800A Frame)
and other options. The conduit box cover
properly directs outside ventilating air
through the generator.
MagnaMAX Unirotor
An aluminum die cast rotor core affords
high mechanical integrity and low vibration
at operating speeds. Amortisseur winding
and coil supports are die cast as an integral
part of the rotor. Laminations are 4-pole,
one piece laminations which are shrunk fit
and keyed to the shaft. No dovetails, cross
bolts or other pole to shaft connecting
devices are used. The cast unidirectional
aluminum alloy ventilation fan provides
even air distribution to maximize cooling
and generator efficiency.
Adapters and Drive Discs
All single bearing units are available with
several adapters and drive disc
arrangements. These can be shipped to order
or can be changed in the field with standard
shop tools. When changing flexible drive
discs, spacers are used between the discs and
the cast iron hub to maintain SAE standard
dimensions.
7
TM
Construction
Advertisement
Table of Contents
