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Selection
Method |
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¨ç Using the following formula, obtain Design
Torque required.
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¨è Select the size with the same or with the
greater value at the Basic Torque column. Refer to the maximum
speed allowed to the size selected, and then compare the shaft
diameters of the application with the max. Bore dia of the
size selected. If the coupling bore size is not suitable,
select the larger coupling size.
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| 2) |
Special requirements |
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¨ç At the application of the Sliding Gear Coupling
(type GH) that end float movement occurs more than 5 t/h,
add 0.5 to the listed value of service factor.
¨è At the applications such as continuous reverse motions,
intermittent operation, often peak load and high inertia requied
system, multiply 1.5 to the Design Torque calculated
¨é In the types GFS-R and GFS-O, the thickness and length of
intermediate shaft must be determined according to our company's
material program. Consult with our Engineer. Selecting the
size of types GDBW and GSBW, apply brake power if it exceeds
the prime mover power.
¨ê Selecting the size of types GDBW and GSBW, apply brake power
if it exceeds the prime mover power.
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| 3) |
Example |
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Select a Gear Coupling to connect a 450HP,
1,170rpm electric motor with a reducer.
Motor shaft diameter is 80mm. Reducer shaft diameter is 90mm.
Max.parallel alignment allowed is 1.5mm.
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¨ç Select type GDE for a higher valued application
of parallel misalignment.
¨è Service factor is 2.0
¨é Use the moral formula
Size GDE25 is selected with a rating of 90
HP per 100rpm. To accept the larger shaft dia 90mm, finally
GDE30 is selected.
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Designation |
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Instruction
for Installation |
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| 1) |
Small Size (under to size 60) |
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Hub boring and keyway must be machined accurately.
During the key-fit to the shaft and the hub, be careful the
oil leakage.
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¨ç Clean all parts. Grease the crowned
gear teeth and O-Ring, Put O-Ring onto the shafts.
¨è Place the flanged sleeves on the shafts,
and mount the hubs.
¨é Using a spacer bar, make a gab between
the hubs equal to the moral gab specified in this book.
¨ê Align the shaft with a strait bar,
checking every 90 degree, referring to the table 3.
Make it sure with a dial gauge to not exceed the offset
limit.
¨ë Insert gasket between the flanged
sleeves, and fasten the bolts, positioning the lube
hole at 90¢ª
¨ì Full up the grease until overflowing
at the opened opposite hole.
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| Table3(mm) (Operating Alignment Limits) |
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Size
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10
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15
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20
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25
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30
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35
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40
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45
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50
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55
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60
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70
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80
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90
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100
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Angular
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0.125
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0.125
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0.25
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0.25
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0.3
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0.3
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0.3
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0.3
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0.3
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0.3
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0.3
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0.3
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0.4
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0.4
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0.4
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GAP
(¼öÁ÷ÇüÁ¦¿Ü)
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3
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3
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3
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4.5
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4.5
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6
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6
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8
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8
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8
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8
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9.5
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10
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13
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13
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Flange Bolt
Torque(kg.cm)
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96
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320
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480
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960
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960
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1650
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1650
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1650
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2070
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2070
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2070
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2980
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* The life of coupling is reduced by excess of the
OFFSET limit
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| 2) |
Large Size (over size 70) |
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Hub boring and Keyway must be machined accurately.
During the Key-Fit work, be careful the oil leakage.
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¨ç Clean all parts. Pack sleeve teeth with
grease and lightly coat seals with grease before assembly
¨è Place the side cover with gaskets on the
shafts before
mounting the hubs. Mount hubs on their respectative shafts.
Then mount flanged sleeves with side cover gaskets.
¨é Use a spacer bar for equal to gap. The difference
in minimum and maximum measurements should not exceed the
angular limit specified in table 3.
¨ê Align with a straight edge rests squarely
stevery 90¢ª as shown in photo. Check with feelers. The tolerance
should not exceed the offset limit specified in table 3.
¨ë Insert gasket between flanges. Position
flanged sleeves with lube holes at about 90¢ª and then fasten
flanged sleeves.
¨ì Remove all lube plugs and put recommended
grease into the coupling until excess flows through an opened
lube hole and then plug
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