Technical Data  Reducers  Miter and Bevel Gear Boxes  Technical Data

1. Efficiency

Miter Gear Boxes and ARA Gear Boxes use precision spiral bevel gears for high efficiency.

(1) ED2 ~ ED12:98% (2) ED16 ~ ED25:95% (3) ARA3 ~ ARA6:98%

The above may change depending on rotation speed, ambient temperature, and/or load rate.

2. Backlash

The backlash is the total mechanical clearance that can be calculated in the rotating direction of the cross shaft when the lateral shaft is fixed.

2-1. Miter Gear Box

Unit: Angle °
ED Reduction Ratio
1:1 1.5:1 2:1 2.5:1 3:1
2 0.20 ~ 1.51 - - - -
4 0.15 ~ 1.16 - 0.12 ~ 0.65 - -
6 0.19 ~ 1.00 0.17 ~ 0.85 0.17 ~ 0.59 0.09 ~ 0.51 0.09 ~ 0.51
7 0.24 ~ 0.94 0.17 ~ 0.79 0.15 ~ 0.50 0.17 ~ 0.53 0.08 ~ 0.45
8 0.19 ~ 0.82 0.14 ~ 0.70 0.12 ~ 0.45 0.14 ~ 0.47 0.07 ~ 0.40
10 0.18 ~ 0.75 0.16 ~ 0.65 0.11~ 0.58 0.12 ~ 0.42 0.12 ~ 0.42
12 0.16 ~ 0.65 0.13 ~ 0.57 0.12 ~ 0.53 0.13 ~ 0.40 0.10 ~ 0.37
16 0.16 ~ 0.66 - 0.12 ~ 0.51 - -
20 0.16 ~ 0.60 - 0.09 ~ 0.43 - -
25 0.15 ~ 0.53 - 0.09 ~ 0.38 - -

Note) Low-backlash models are available for applications that require positioning accuracy. (See catalog )

2-2. ARA Gear Box

Unit: Angle °
ARA Reduction Ratio
10 (1:1) 20 (2:1)
3 0.31 ~ 1.97 0.31 ~ 1.75
5 0.24 ~ 1.42 0.19 ~ 1.15
6 0.18 ~ 1.16 0.16 ~ 0.94