Transmission Efficiency of Right-Angle Gearheads

Permissible Torque
TG = TM × i × η
TG
Permissible torque of gearhead
TM
Motor torque
i
Gearhead gear ratio
η
Transmission efficiency of gearhead

Gear Ratio

Product Name

3 3.6 5 6 7.5 9 12.5 15 18 25 30 36 50 60 75 90 100 120 150 180
4GN□RH At rating 40 % 50 % 60 %
At startup 40 % 50 % 54 %
5GN□RH At rating 50 % 68 % 60 %
At startup 50 % 60 % 54 %
5GE□RH At rating 50 % 68 % 60 % 50 %
At startup 50 % 60 % 54 % 45 %
5GU□RH At rating 50 % 68 % 60 % 50 %
At startup 50 % 60 % 54 % 45 %
4GN□RA At rating 50 % 60 %
At startup 50 % 54 %
5GN□RA At rating 68 % 60 %
At startup 60 % 54 %
5GE□RA At rating 68 % 60 % 50 %
At startup 60 % 54 % 45 %
5GU□RA At rating 68 % 60 % 50 %
At startup 60 % 54 % 45 %
    A number indicating the gear ratio is specified where the box
  • is located in the product name.
  • For BH6G2-□RH, BH6G2-□RA, and 7GV□RHS, transmission efficiency across all gear ratios is 73 % at both the rating and startup.

Note

  • The transmission efficiency in the table above is the value at normal ambient temperature. The transmission efficiency of the gearhead varies depending on the ambient temperature.
    Note that when using in a low-temperature environment, the transmission efficiency will deteriorate, causing the output torque to drop.