Request a quote from Nidec Drive Technology America Corporation.
This quote form is intended for customers and partners in North America seeking information about Nidec Drive Technology America Corporation’s Precision Gearing Technologies. For inquiries related to the Nidec motor group division or from outside this region, please visit the global Nidec Group website to find the appropriate regional or product-specific contact.
Subscribe to our email newsletter to stay current with our precision gearing solutions, featured products, company updates, and industry news.
The STHEL7 pairs the industry-proven STH rotary index table with Nidec’s EVL-070 right-angle planetary gearbox, providing a compact 90° motor orientation for machinery with tight or low-profile installation requirements. This configuration delivers all the precision, rigidity, and integration benefits of the STH platform while enabling greater design freedom in constrained layouts.
The STHEL7 features an 85 mm hollow shaft for clean routing of cables, air lines, or mechanical components, and a cross-roller bearing capable of supporting up to 200 Nm of tilting moment load and 5000 N of radial load. With backlash as low as 2 arc-min and indexing accuracy to ±60 arc-sec, it offers the repeatable performance needed for packaging systems, robotic automation, aluminum dial tables, and precision assembly equipment.
Reduction ratios from 12:1 to 400:1, combined with an optimized motor adapter system and active centering, ensure smooth integration with a wide range of servo motors. The STHEL7 is the ideal choice for designers who want right-angle performance without compromising accuracy or rigidity.
| Ratio *1 | Unit | Note | 12:1 | 16:1 | 20:1 | 28:1 | 40:1 |
| Nominal Torque | [Nm] | *2 | 43 | 58 | 84 | 85 | 61 |
| Maximum Acceleration Torque | [Nm] | – | 86 | 115 | 152 | 170 | 122 |
| Emergency Stop Torque | [Nm] | – | 180 | 234 | 240 | 240 | 204 |
| Nominal Input Speed | [rpm] | – | 3000 | 3000 | 3000 | 3000 | 3000 |
| Maximum Input Speed | [rpm] | – | 6000 | 6000 | 6000 | 6000 | 6000 |
| Maximum Axial Load | [N] | – | 4000 | 4000 | 4000 | 4000 | 4000 |
| Maximum Radial Load | [N] | – | 5000 | 5000 | 5000 | 5000 | 5000 |
| Maximum Tilting Moment Load | [Nm] | – | 200 | 200 | 200 | 200 | 200 |
| Maximum Surface Runout | [mm] | – | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 |
| Moment of Inertia (≤ Ø8) | [kgcm2] | *3 | 1.280 | 0.811 | 0.597 | 0.412 | 0.314 |
| Moment of Inertia (≤ Ø14) | [kgcm2] | *3 | 1.355 | 0.886 | 0.672 | 0.487 | 0.389 |
| Moment of Inertia (≤ Ø19) | [kgcm2] | *3 | 1.544 | 1.075 | 0.862 | 0.676 | 0.578 |
| Efficiency | [%] | – | 84 | 84 | 88 | 88 | 88 |
| Maximum Torsional Backlash | [Arc-min] | – | ≤ 3 | ≤ 3 | ≤ 3 | ≤ 3 | ≤ 3 |
| Accuracy | [Arc-sec] | – | ±60 | ±60 | ±60 | ±60 | ±60 |
| Torsional Stiffness | [Nm/arc-min] | – | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 |
| Noise Level | [dB] | – | 72 | 72 | 65 | 65 | 65 |
| Maximum Ambient Temperature | [°C] | – | 0-40 | 0-40 | 0-40 | 0-40 | 0-40 |
| Permitted Housing Temperature | [°C] | – | 90 | 90 | 90 | 90 | 90 |
| Protection Class | – | *4 | IP54 (IP65) | IP54 (IP65) | IP54 (IP65) | IP54 (IP65) | IP54 (IP65) |
| Weight | [kg] | – | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 |
| Ratio *1 | Unit | Note | 60:1 | 80:1 | 100:1 | 120:1 | 140:1 | 160:1 | 200:1 | 280:1 | 400:1 |
| Nominal Torque | [Nm] | *2 | 61 | 85 | 85 | 61 | 85 | 85 | 85 | 85 | 61 |
| Maximum Acceleration Torque | [Nm] | – | 122 | 170 | 170 | 122 | 170 | 170 | 170 | 170 | 122 |
| Emergency Stop Torque | [Nm] | – | 240 | 240 | 240 | 240 | 240 | 240 | 240 | 240 | 240 |
| Nominal Input Speed | [rpm] | – | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 |
| Maximum Input Speed | [rpm] | – | 6000 | 6000 | 6000 | 6000 | 6000 | 6000 | 6000 | 6000 | 6000 |
| Maximum Axial Load | [N] | – | 4000 | 4000 | 4000 | 4000 | 4000 | 4000 | 4000 | 4000 | 4000 |
| Maximum Radial Load | [N] | – | 5000 | 5000 | 5000 | 5000 | 5000 | 5000 | 5000 | 5000 | 5000 |
| Maximum Tilting Moment Load | [Nm] | – | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 |
| Maximum Surface Runout | [mm] | – | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 | 0.070 |
| Moment of Inertia (≤ Ø8) | [kgcm2] | *3 | 0.112 | 0.093 | 0.085 | 0.072 | 0.077 | 0.066 | 0.064 | 0.063 | 0.062 |
| Moment of Inertia (≤ Ø14) | [kgcm2] | *3 | 0.157 | 0.138 | 0.129 | 0.116 | 0.122 | 0.111 | 0.108 | 0.106 | 0.106 |
| Moment of Inertia (≤ Ø19) | [kgcm2] | *3 | – | – | – | – | – | – | – | – | – |
| Efficiency | [%] | – | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 |
| Maximum Torsional Backlash | [Arc-min] | – | ≤ 4 | ≤ 4 | ≤ 4 | ≤ 4 | ≤ 4 | ≤ 4 | ≤ 4 | ≤ 4 | ≤ 4 |
| Accuracy | [Arc-sec] | – | ±60 | ±60 | ±60 | ±60 | ±60 | ±60 | ±60 | ±60 | ±60 |
| Torsional Stiffness | [Nm/arc-min] | – | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 |
| Noise Level | [dB] | – | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| Maximum Ambient Temperature | [°C] | – | 0-40 | 0-40 | 0-40 | 0-40 | 0-40 | 0-40 | 0-40 | 0-40 | 0-40 |
| Permitted Housing Temperature | [°C] | – | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 |
| Protection Class | – | *4 | IP54 (IP65) | IP54 (IP65) | IP54 (IP65) | IP54 (IP65) | IP54 (IP65) | IP54 (IP65) | IP54 (IP65) | IP54 (IP65) | IP54 (IP65) |
| Weight | [kg] | – | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 |
