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STR 125V Frame

This versatile solution features programmable output motions with low-wear rolling contact. Larger inertia load transmission is achieved with internal cam ratio reduction while maintaining powerful torque with less motor horsepower. The STR’s unique no-backlash preloaded mechanism improves the overall dynamics to force output motions to a new level of rigidity and accurate servo controller performance. The compact design reduces footprint while offering high speed rotation with large bending moment capacity.

Downloads

Selection Configurator

STR 125V Frame

Instruction Manual

Reducer Installation Manual

Technical Data

STR 125V 1 Stage Specifications with VRB 090

RatioUnitNote20
Nominal Torque[Nm]*1548
Acceleration Torque[Nm]–939
No Load Torque[Nm]*13.8
Nominal Input Speed[rpm]*2600
Maximum Input Speed[rpm]*21600
Reflected Inertia[kg-m2x10-4]*314.85
Reflected Inertia (≤ Ø8)[kg-m2x10-4]*3–
Reflected Inertia (≤ Ø14)[kg-m2x10-4]*3–
Reflected Inertia (≤ Ø19)[kg-m2x10-4]*3–
Reflected Inertia (≤ Ø28)[kg-m2x10-4]*3–
Backlash[arc-min]–0
Angular Transmission Accuracy[arc-min]–≤ 0.7
Angular Repeatability Accuracy[arc-min]–±0.08
Surface Runout[µm (max)]–10
Weight[kg]–36.3
Maximum Axial Load[N]–8178
Maximum Radial Load[N]–7452
Maximum Tilting Moment Load[Nm]–764
Efficiency[%]–80
Protection Class–*4IP54 (IP65)

STR 125V 2 Stage Specifications with VRB 090

RatioUnitNote6080100120140160180200
Nominal Torque[Nm]*1548548548548548548548548
Acceleration Torque[Nm]–939939939939939939939939
No Load Torque[Nm]*10.40.40.40.40.40.40.40.4
Nominal Input Speed[rpm]*218002400300030003000300030003000
Maximum Input Speed[rpm]*248006000600060006000600060006000
Reflected Inertia[kg-m2x10-4]*3––––––––
Reflected Inertia (≤ Ø8)[kg-m2x10-4]*3––––––––
Reflected Inertia (≤ Ø14)[kg-m2x10-4]*30.7570.5270.4370.3970.3570.3470.3270.327
Reflected Inertia (≤ Ø19)[kg-m2x10-4]*31.2370.9870.8970.8570.8270.8070.7970.787
Reflected Inertia (≤ Ø28)[kg-m2x10-4]*33.2373.0372.9372.8372.8372.8372.8372.837
Backlash[arc-min]–00000000
Angular Transmission Accuracy[arc-min]–≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7
Angular Repeatability Accuracy[arc-min]–±0.08±0.08±0.08±0.08±0.08±0.08±0.08±0.08
Surface Runout[µm (max)]–1010101010101010
Weight[kg]–40.040.040.040.040.040.040.040.0
Maximum Axial Load[N]–81788178817881788178817881788178
Maximum Radial Load[N]–74527452745274527452745274527452
Maximum Tilting Moment Load[Nm]–764764764764764764764764
Efficiency[%]–7676767676767676
Protection Class–*4IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)

STR 125V 3 Stage Specifications with VRB 090

RatioUnitNote300320400500560600700
Nominal Torque[Nm]*1548548548548548548548
Acceleration Torque[Nm]–939939939939939939939
No Load Torque[Nm]*10.20.20.20.20.20.20.2
Nominal Input Speed[rpm]*23000300030003000300030003000
Maximum Input Speed[rpm]*26000600060006000600060006000
Reflected Inertia (Single)[kg-m2x10-4]*3–––––––
Reflected Inertia (≤ Ø8)[kg-m2x10-4]*30.1670.1870.1670.1570.1770.1370.157
Reflected Inertia (≤ Ø14)[kg-m2x10-4]*30.3170.3370.3170.3170.3270.2870.307
Reflected Inertia (≤ Ø19)[kg-m2x10-4]*30.7570.7770.7570.7470.7670.7370.747
Reflected Inertia (≤ Ø28)[kg-m2x10-4]*32.7372.8372.7372.7372.7372.6372.737
Backlash[arc-min]–0000000
Angular Transmission Accuracy[arc-min]–≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7
Angular Repeatability Accuracy[arc-min]–±0.08±0.08±0.08±0.08±0.08±0.08±0.08
Surface Runout[µm (max)]–10101010101010
Weight[kg]–40.540.540.540.540.540.540.5
Maximum Axial Load[N]–8178817881788178817881788178
Maximum Radial Load[N]–7452745274527452745274527452
Maximum Tilting Moment Load[Nm]–764764764764764764764
Efficiency[%]–72727272727272
Protection Class–*4IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)
RatioUnitNote800900100012001400160018002000
Nominal Torque[Nm]*1548548548548548548548548
Acceleration Torque[Nm]–939939939939939939939939
No Load Torque[Nm]*10.20.20.20.20.20.20.20.2
Nominal Input Speed[rpm]*230003000300030003000300030003000
Maximum Input Speed[rpm]*260006000600060006000600060006000
Reflected Inertia (Single)[kg-m2x10-4]*3––––––––
Reflected Inertia (≤ Ø8)[kg-m2x10-4]*30.1360.1570.1350.1350.1340.1340.1340.134
Reflected Inertia (≤ Ø14)[kg-m2x10-4]*30.2870.3070.2870.2870.2870.2870.2870.287
Reflected Inertia (≤ Ø19)[kg-m2x10-4]*30.7370.7470.7270.7270.7270.7270.7270.727
Reflected Inertia (≤ Ø28)[kg-m2x10-4]*32.6372.7372.6372.6372.6372.6372.6372.637
Backlash[arc-min]–00000000
Angular Transmission Accuracy[arc-min]–≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7≤ 0.7
Angular Repeatability Accuracy[arc-min]–±0.08±0.08±0.08±0.08±0.08±0.08±0.08±0.08
Surface Runout[µm (max)]–1010101010101010
Weight[kg]–40.540.540.540.540.5240.540.540.5
Maximum Axial Load[N]–81788178817881788178817881788178
Maximum Radial Load[N]–74527452745274527452745274527452
Maximum Tilting Moment Load[Nm]–764764764764764764764764
Efficiency[%]–7272727272727272
Protection Class–*4IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)IP54 (IP65)
  1. At nominal input speed
  2. Speeds are at the actuator input. Limits when used with additional gearbox are higher
  3. At input shaft
  4. IP65 (wash-down) is available as an option. Contact Nidec Drive Technology for more details and our food grade options

STR 125V Dimensions with VRB 090

* Refer to VRB-090 dimensions