NORD Drivesystems B1000 - Manual (Page 800)

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G1000 – Subject to Change Without Notice
Key Features
Gearing
The gears are made from high strength steel forgings.
The teeth are case-hardened then precision fi nished
using either grinding or skive-hobbing methods. As a
result, high tooth-to-tooth accuracy is ensured which
delivers steady output motion. Tooth stresses are
controlled to assure very long durability with infi nite
life of the gear teeth. Gear torque ratings are thus
optimized for a high degree of reliability.
Gear Quality Level: AGMA Class 11-13.
Gear Hardness: Case hardened to 58-62 Rockwell-C.
Gear Finish: All high-speed gears are ground;
low-speed gears are skive fi nished after hardening.
Edge Deburred Gearing.
Designed for infi nite life
High-Strength Gearcases
Standard housing material is Class 35 Cast Iron. Some
units utilize a corrosion resistant aluminum alloy or
diecast aluminum alloy housing material.
NORD’s robust housings maintain heavy wall sec-
tions. Some competitors have reduced material used
in their housings for cost savings. Material has been
reduced to the point that the walls are too thin and
can fl ex under load. This will misalign the gears and
bearings. In addition, bearing outer races need to be
supported with a stiff backing to achieve their rating.
Thin housings may not properly support the outer
bearing races. Housings are internally painted with a
primer to seal casting process residue and fi ll any sur-
face imperfections.
Lubrication
NORD Gear supplies most all gear units factory-fi lled
with the appropriate oil lubrication type and fi ll-
level per the specifi ed reducer mounting position.
The current exceptions include Clincher™ Series par-
allel-shaft gear units: SK10282, SK10382, SK11282,
SK11382, SK12382, and SK9096.1 which are supplied
without oil.
It is important that proper oils are used in a gear re-
ducer. By supplying the appropriate lubricant type
and amount, NORD Gear eliminates the “guess work”
for the consumer.
Properly selected oil will have the required additives
to prevent the unwanted formation of foam, oxida-
tion, and rust. As well, the proper extreme pressure
additive may be used for hardened alloy steels, or
more importantly, not used when it will be a detri-
ment to the bronze gearing in worm reducers. For
additional technical information please reference the
Lubrication section of this catalog beginning on page
36.
Please see the lubrication table on page 42 for the
standard and optional reducer lubrication types, and
their service temperature ranges.
High-Performance Motors & Brakemotors
NORD motors are designed to run cool for lon-
ger service life. Low rotor inertia and high starting
torque allow peak performance in the most dif-
fi cult applications for inverter and vector duty per
NEMA MG 1-2006 Section 31.4.4.2 voltage spikes.
Our motors are internationally accepted, conform-
ing to North American NEMA MG 1 and interna-
tional IEC electrical specifi cations. High performance
options include brakes, encoders, and forced cooling
fans.