Overview
The SITO DRIVE TA-70 rotary actuator is a robot-joint drive offered with 50 or 100 gear-ratio selections and with or without a brake. Both versions use CAN 2.0B communication, operate from 10–60 V with 48 V recommended, and use face mounting. Ratio selection changes the stated torque, positioning accuracy, output-speed, and power values, helping buyers match the actuator to the required motion profile.
Features
- Gear-ratio options: 50 or 100.
- Brake options: Without Brake or With Brake.
- CAN 2.0B communication at 1 Mbit/s.
- Face-mounting installation method.
- IP54 rating.
Specifications
Performance and electrical specifications
| Parameter | TA-70, Ratio 50 | TA-70, Ratio 100 |
|---|---|---|
| Model | TA-70 | TA-70 |
| Transmission ratio | 50 | 100 |
| Rated torque | 11 Nm | 16 Nm |
| Peak torque allowed during start/stop | 23 Nm | 37 Nm |
| Maximum allowable average load torque | 18 Nm | 27 Nm |
| Instantaneous maximum torque | 30 Nm | 60 Nm |
| Repeat positioning accuracy | 30 arcsec | 15 arcsec |
| Absolute positioning accuracy | 120 arcsec | 100 arcsec |
| Maximum output speed | 80 rpm | 40 rpm |
| Supply voltage | 10–60 V (recommended 48 V) | 10–60 V (recommended 48 V) |
| Rated power | 60 W | 72 W |
| Peak power | 190 W | 240 W |
| Communication mode | CAN 2.0B | CAN 2.0B |
| Baud rate | 1 Mbit/s | 1 Mbit/s |
| Maximum operating temperature | 80 °C | 80 °C |
| Minimum operating temperature | −40 °C | −40 °C |
| Life | 7000 h | 7000 h |
| Installation method | Face mounting | Face mounting |
| Version model | V1 | V1 |
| IP grade | IP54 | IP54 |
Dimensions, weight, and mounting details
| Parameter | Specification |
|---|---|
| Diameter | 70 mm |
| Length | 71.68 mm |
| Hollow bore diameter | 12 mm |
| Weight without brake | 0.72 kg |
| Weight with brake | 0.76 kg |
| Outer diameter tolerance | Ø70 mm, 0/−0.03 |
| Diameter tolerance | Ø54 mm, 0/−0.03 |
| Diameter tolerance | Ø30 mm, 0/−0.02 |
| Other diameters | Ø62.50 mm; Ø49 mm; Ø12 mm bore |
| Axial dimensions | 1.50 mm, 9 mm, 20.50 mm, 39.25 mm, 68.75 mm, and 71.68 mm |
| Angular dimensions | 80° and 15° |
| Threaded mounting holes | 6 × M3-6H, 10 mm deep; 8 × M2.5-6H, 10 mm deep |
| Other mounting holes | Ø2.50 mm, 11 mm deep; 4 × Ø2.500 mm, +0.012/+0.006 tolerance, 6.0 mm deep; Ø2.60 mm, 12 mm deep |
Applications
The TA-70 is specified for rotational-joint applications in humanoid robots, robotic arms, exoskeletons, quadruped robots, AGV vehicles, and ARU robots. Select the 50 or 100 ratio according to the stated torque, output-speed, and positioning-accuracy values required by the joint design.
Downloads
SITO TA70 Motor — 3D Model (STEP)
SITO TA70 Draw instalation drawing — Installation Drawing (PDF)
Visual Details
Additional Product Details

Features and Design


Specifications and Performance




Application Examples


Dimensions and Construction

