Specifications

The gearhead output torque increases proportionally as
the gear ratio increases. But, factors affecting the
gearhead mechanical strength such as gear construction
and materials etc., limit size of the load which can be
applied to the gearhead.
This torque is called the maximum permissible torque.
The maximum permissible torques of typical gearheads
are shown in the figure to the right.
Maximum Permissible Torque
Gear Ratio
Ŧ
The efficiency of decimal gearhead is 81%.
Ŧ
In case of worm gearhead, please refer to their pages. (Page 189 )
Gearhead Efficiency
9IDG2-90FP 9PBKŪBH 17 28 41 62 75 112 134 200 200 200 200 kgfcm
9PFKŪBH 1.7 2.8 4.1 6.2 7.5 11.2 13.4 20 20 20 20 N.m
15 25 36 55 66 99 118 177 177 177 177 lb-in
unit
Torque table ; 60Hz (Example)
ώ Permissible Torque : It refers to the value of load torque driven by the gearhead's output shaft. Each value is shown for the
corresponding gear ratio.
Permissible torque when a gearhead is connected can be calculated with the equation below.
Permissible Torque TG = TM X i X n
TG = Permissible Torque of Gearhead
TM = Motor Torque
i = Gear Ratio of Gearhead
n = Gearhead Efficiency
Unit : Upper values : N.m / Middle : kgfcm / Lower : lb-in
Model
Motor/ Gearhead Gear Ratio
speed RPM (r/min)
500 300 200 120 100 60 50 30 20 15 10
3.6 6 9 15 18 30 36 60 90 120 180
How to Read Gearhead Specifications
Ratio
81%
81%
73%
73%
66% 59%
66%
3 3.6 5 6 7.5 9 10 13 15 18 20 25 30 36 40 50 60 75
90 100 120 150 180 200 250
Model
6GBDŪB(M)H
7GBKŪB(M)H
8GBKŪB(M)H
9GBKŪB(M)H
9PBKŪBH
9PFK
ŪB
H
9HBKŪBH