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Indication of model numbers
1st+2nd digits TYPE & Model
SG
042 / 060 / 090 / 115 / 142 / 180
SGL
042 / 060 / 090 / 115 / 142 / 180
SE
042 / 060 / 090 / 115 / 142 / 180
SD / T
047 / 064 / 090 / 110 / 140 / 200
SGS
042 / 060 / 090 / 115 / 142 / 180
SGR
042 / 060 / 090 / 115 / 142 / 180
ST
060 / 090 / 115 / 142
SP
060 / 075 / 100 / 115 / 140 / 160 / 180
PE
042 / 060 / 090 / 115 / 142 / 180
PG
042 / 060 / 090 / 115 / 142 / 180 / 220
HT
062 / 085 / 130 / 200
3rd digits Ratio
1-STAGE
3 ~ 10
2-STAGE
15 ~ 100
4rd digits Output Shaft keyway
S1 Standard (Keyway)
S2 Solid Output (No keyway)
5rd digits Backlash Class
SGL / SE / PG / PE / HT
Standard Backlash
SG / SD / SGS
SGR / ST / SP
SGR / ST / SP
PS Ultra high Precision Backlash
P0 High Precision Backlash
P1 Precision Backlash
P2 Standard Backlash
P0 High Precision Backlash
P1 Precision Backlash
P2 Standard Backlash
6rd digits Motor Type
Motor Brand & Model NO. Type
How to selection the reducer:
Please refer the example.
Example: Servo motor 750kW, rated output torque 2.39Nm, motor shaft Ø19mm.
1.Suppose the speed reduction ratio is 1/50:
Output torque is 2.39Nm×50×94%(efficiency)=112.3Nm
*You can select SG-90-50 with rated output torque of 165Nm and S.F.=1.4
*You also can select SG-115-50 with rated output torque of 338Nm and S.F.=3.0
2.Suppose the speed reduction ratio is 1/100:
Output torque is 2.39×100×94%(efficiency)=224Nm
*You can select SG-115-100 and S.F.=1.0
don't suggested to choose SG-90-100 because low of S.F.=0.4
