Automatic Turning Gears - Koenig Engineering, Inc.

Automatic Turning Gears
For Industrial Fan Applications
ENGINEERING INC.
Koenig Engineering Inc. (KEI) is pleased to offer a new line of
cost reduced Turning Gears designed specifically for induced draft,
forced draft and hot gas recirculation fan applications. The Turning Gear drive designs incorporate key features utilized in KEI’s
proven Gas and Steam Turbine Turning Gears. Over 1000 Turning Gears for gas and steam turbines, compressors and industrial
fan applications are in the field, with outputs from 500 ft-lbs to
150,000 ft-lbs, at speeds from fractional to 200 RPM. All Turning Gears for fan applications are backed by Koenig’s superior
customer support and service.
Outer Race
a
F
Sprag
b
Inner Race
Cage
New and Retrofit Applications
Before Lift Off
KEI will design a Turning Gear to accompany any new industrial
fan installation to provide maximum protection from rotor damage. In addition, KEI will custom engineer Turning Gears for any
existing application, to meet the customer's torque and speed requirements, in a surprisingly compact package.
Advanced Design Gives a Compact Size
All Koenig Engineering Turning Gears utilize a Delroyd worm
gear reducer in place of helical gears, which gives several advantages. Worm gearing allows a large speed reduction in minimal
space, typically reducing the length of the Turning Gear. In addition, the clutch is mounted inside the worm gear housing, which
means it takes up no additional space in the overall package. The
clutch is also submerged in the same lubricating oil as the worm
gear, reducing maintenance and the number of oil leak paths.
Marland Sprag Freewheel Clutch with Lift Off
In the heart of KEI’s fan drive Turning Gears lies a Marland sprag
overrunning clutch with lift off capability. Traditional sprag
clutches are configured so that the sprags ride directly on the race
at all times, leading to a shorter service life than a lift-off design.
Marland RMI series sprag clutches allow the inner shaft to overrun, while lifting the sprags off of the running surfaces eliminating wear points.
The ability to provide lift off on an inner-overrun situation allows
mounting of the clutch inside the worm gear without sacrificing
durability.
Long Service Life with Low Maintenance
Koenig uses only durable components, and sizes them to maximize their service life. Delroyd worm gears have a proven track
record, and utilize Mobil SHC Synthetic lubricants, which do not
need replacement nearly as often as conventional oils, while pro-
After Lift Off
The cage of the Marland sprag overrunning clutch rotates
with the inner race. The special geometry of these sprags
feature an offset center of gravity that will lift-off the inner
and outer races while overrunning (due to centrifugal force
“F”). Thus, at speed, the sprags do not contact the inner or
outer races (clearance dimensions “a” and “b”), preventing
wear while overrunning.
Model
Speed
KE60-RMI47SB-7.5
KE80-RMI55SB-15
KE100-RMI55SBS-25
KE60-RMI47SB-10
KE80-RMI55SB-20
KE100-RMI55SBS-30
(RPM)
45
45
45
60
60
60
Breakaway
Torque
(ft-lb)
2100
3800
6450
2200
3700
5800
All Breakaway Torques and Speeds are approximate. Contact
a Koenig Engineering representative for exact application
data. We can build a Turning Gear of almost any size, to run
at almost any speed.
viding superior lubrication to the gearing, the clutch, and the bearings in severe temperatures.
Koenig Service and Support
Koenig Engineering takes pride in its customer service and support. Engineers are available during business hours for any questions and concerns regarding installation, maintenance or repairs.
Our spare parts department can help expedite repairs, minimizing
any downtime.
Koenig Engineering Inc. • 410 Eagleview Blvd. • Suite 104 • Exton, PA 19341
Phone (610) 458-0153 • Fax (610) 458-0404 • www.koenigengr.com • [email protected]
Automatic Turning Gears
For Industrial Fan Applications
ENGINEERING INC.
Features & Benefits
1. Solid Foundation
.
4. Kop-Flex Gear
Coupling
3. Backstop Clutch
Certain applications run the
risk of reverse rotating the
Turning Gear. To prevent reverse rotation, and subsequent
damage to the Turning Gear,
KEI offers two means of protection: a backstop clutch on
the worm shaft, and a shear
pin coupling. Should reverse
rotation occur, the backstop
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APPROX. 45-57"
Typical elevation view of the Turning Gear, showing the motor
mounted low on the worm gear. This particular drawing also
shows the optional soleplate base, and backstop clutch. Not
shown is the oil level sight glass, which allows the operator to
check the worm gear and clutch oil level at any time, including
when in operation.
4
5
APPROX. 30-36"
An optional Pneumatic
Turning Kit, available from
KEI, utilizes an air driven
torque wrench for more convenience and speed than a
manual torque wrench. See
the KEI website for more information on this option.
3
1
2. Standard Manual
Turning Adapter
All Koenig Engineering
Turning Gears feature a
manual turning provision. A
hex drive on the end of the
primary shaft allows manual
rotation of the Turning Gear
and fan for maintenance and
inspection.
clutch will hold the Turning
Gear in place. If the reverse
torque reaches the maximum
allowable, the disposable coupling pins will shear, disconnecting the coupling halves,
and protecting the Turning
Gear from damage.
2
APPROX. 29-37"
Optional soleplate can be
embedded in cement, allowing simple alignment of the
Turning Gear using shims.
Finally, the Turning Gear is
doweled and bolted in place.
The Standard Support Base
(lower diagram) is designed
to be grouted in place to make
a secure platform.
The standard Kop-Flex gear
coupling used to connect the
Turning Gear to the fan shaft
can accommodate angular
and parallel misalignment, in
addition to a significant
amount of axial growth.
5. Marland Lift Off
Sprag Clutch
This design permits the
sprags to lift off the inner and
outer races once the driven
member is at speed, virtually
eliminating clutch wear. The
compact size of the clutch allows mounting inside of the
worm gear housing.
6. Gear/Clutch Oil
Level Sight Glass
The oil level in the worm gear
housing is visible at all times
even when running, through
the sight glass. The clutch is
enclosed in the same housing
6
as the worm gear, and is subAPPROX. 45-57"
merged in the same lubricant,
Typical plan view of the Turning Gear. The motor can be minimizing maintenance
mounted on either side of the worm. This view shows the and providing a substantial
overall compact footprint of the Turning Gear. When necessary, reservoir of lubricant, and a
Koenig can custom design Turning Gears to fit most any large heat sink for the clutch.
application, including vertical motor configurations.
Koenig Engineering Inc. • 410 Eagleview Blvd. • Suite 104 • Exton, PA 19341
Phone (610) 458-0153 • Fax (610) 458-0404 • www.koenigengr.com • [email protected]