NORD Drivesystems B1000 - Manual (Page 24)

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INTRODUCTION
G1000 – Subject to Change Without Notice
Gear Unit
Options
Special Hollow Shaft (SWA)
Special hollow bore shafts can also be provided. Spe-
cial hollow bore shafts can be provided with special di-
ameters, multiple keyways, and even special extended
hollow shafts that are frequently used with counter
rotating drives. Different shaft materials are also avail-
able. Specify your shaft requirements and NORD will
verify the design feasibility.
Hollow Shaft with Spline (EA)
Hollow shafts with a metric involute spline profi le ac-
cording to DIN 5480 are available for some NORD hol-
low shaft reducers. These spline shafts are commonly
used on crane travel drives. See pages 573 & 671 for
details.
Heavy Duty Output Bearings (VL)
Replacing standard output bearings with heavy-duty
versions will increase the external load carrying ca-
pacityof the speed reducer. Increased capacity in ei-
ther or both overhung (radial) or thrust (axial) loading
insures that premature bearing failure will not occur
due to high stresses in the bearing elements. The
increased bearing capacity will also keep the speed
reducer as small as possible by not having to select
the next larger case size in order to handle the bear-
ing loads. If increased bearing life is desired, larger
bearings will reduce the relative stress on the bear-
ings and increased B10 bearing life.
(FKM) Fluoro-rubber Seals (VI)
The NORD standard oil seals are made of Nitrile or rubber
and are rated for temperatures up to 125ºC or 250ºF.
If ambient or oil temperatures rise above this level
NORD recommends using fl uoro-rubber (also called
FKM) oil seals. FKM seals are rated from -30ºF to
400ºF (-35ºC to 200ºC).
Torque Arm (D)
A torque arm is a compact, simple way to secure a
shaft mounted reducer. It is bolted onto the reducers
B14 fl ange. The tear drop shaped torque arm has a
rubber bushing located at the fastening hole-end to
act as a shock absorber to dampen out peak shock
loads.
?
Specify the torque arm location and
orientation when ordering
Torque arm location
Torque arm orientation
See Page 18 for details
Bottom Mount Torque Arm (K)
A torque arm is a compact, simple way to secure a
shaft mounted reducer. It is bolted onto the base of
the reducer. The torque tab has a rubber bushing lo-
cated at the fastening hole-end to act as a shock ab-
sorber to dampen out peak shock loads.The torque
tab is available for bevel units SK 90.1.
?
Specify the torque tab location
when ordering
Torque tab location
See Page 18 for details