01 · Screen the duty
Match torque and speed over time
Compare rated and peak values with the actual motion profile, including peak duration, repetition, acceleration, and thermal conditions. Do not size from peak torque alone.
Available direction
Planetary integrated joint actuator
300 Nm peak planetary joint actuator, 18:1 ratio: MGA-PJ-100-20-18
Model 1 lists 60 Nm rated torque, 300 Nm under the source’s “Peak torque (>3 s)” label, an 18:1 ratio, and 106 rpm peak speed. The source says a brake can be customized and the standard configuration has no through-bore. Treat the brake as a project option requiring confirmation, not as included hardware.
Is a brake required, and what are the resulting interface, mass, and operating limits for that option?
Model 1 summary
Start with the published torque, speed, mass, and ratio
Summary values are transcribed from the catalogue strip and checked against the Model 1 table. They are not a substitute for an application duty-cycle review.
- Peak torque (>3 s)
- 300 Nm
- Peak speed
- 106 RPM
- Weight
- 1675 g
- Reduction ratio
- 18
Verified fact
What this catalogue record confirms
MGA-PJ-100-20-18 is identified in the supplied product literature as a planetary integrated joint actuator. The specification tables below retain the source's Model 1 and Model 2 labels and every listed field.
- The standard configuration has no through-bore; brake customization is supported.
- Standard communication supports CAN bus; EtherCAT/CAN FD can be customized.
- Other KV versions may be available; confirm the exact configuration and lead time with sales before ordering.
- The standard configuration has no water-resistance protection. Contact sales before ordering if needed.
Confirm for your project
Selection questions that still need an application answer
A catalogue value narrows the comparison. It does not establish fit for a mechanism without the load profile, mounting stack, controller, and operating environment.
- Required continuous torque, peak torque, peak duration, and repetition rate
- Output speed, acceleration, reversal, impact, and duty cycle
- Mounting face, bolt pattern, shaft/bore, cable route, and external loads
- Supply voltage, control mode, communication, feedback, brake, and protection requirements
MGA-PJ-100-20-18 technical specifications
The catalogue labels its columns Model 1 and Model 2 but does not define the difference between them. Both labels are retained as published. A source dash or unpopulated cell is presented as “Not specified in source.”
| Parameter | Unit | Model 1 | Model 2 |
|---|---|---|---|
| Operating voltage | V | 12-72 | 12-72 |
| Rated voltage | V | 48 | 48 |
| Rated torque | Nm | 60 | 41 |
| Rated speed | RPM | 60 | 80 |
| Rated current | A(rms) | 17 | 20 |
| Peak torque (>3 s) | Nm | 300 | 180 |
| Peak speed | RPM | 106 | 156 |
| Peak current | A(rms) | 100 | 100 |
| Torque constant | Nm/A | 3.3 | 2.0 |
| Back-EMF constant | Vrms/Krpm | Not specified in source | Not specified in source |
| Speed constant | rpm/V | 40 | 60 |
| Motor constant | Nm/√W | Not specified in source | Not specified in source |
| Electromechanical time constant | ms | Not specified in source | Not specified in source |
| Electrical time constant | ms | Not specified in source | Not specified in source |
| Pole pairs | — | 21 | 21 |
| Winding connection | — | Star | Delta |
| Phase resistance | Ω | 0.208 | 0.07 |
| Phase inductance | mH | 0.34 | 0.06 |
| Parameter | Unit | Model 1 | Model 2 |
|---|---|---|---|
| Reduction ratio | — | 18 | 18 |
| Reducer backlash | Arcmin | 10 | 10 |
| Output bearing | — | Crossed-roller bearing | Crossed-roller bearing |
| Backdrive torque | Nm | 1.2 | 1.2 |
| Rotational inertia | g.cm² | Not specified in source | Not specified in source |
| Weight | g | 1675 | 1675 |
| Axial load | kN | 5.9 | 5.9 |
| Radial load | kN | 2.6 | 2.6 |
| Parameter | Unit | Model 1 | Model 2 |
|---|---|---|---|
| Control bandwidth | Hz | 2000 | 2000 |
| Communication | — | CAN | CAN |
| Encoder type | — | Mechanical dual encoder | Mechanical dual encoder |
| Encoder resolution | bit | 14 | 14 |
| CAN interface | — | XT30(2+2)PB-M | XT30(2+2)PB-M |
| USB interface | — | SH1.0-4P | SH1.0-4P |
| Power interface | — | XT30(2+2)PB-M | XT30(2+2)PB-M |
| Control modes | — | Servo mode; Speed mode; Torque mode; Force-position hybrid mode | Servo mode; Speed mode; Torque mode; Force-position hybrid mode |
| Protection functions | — | Overvoltage protection; Overcurrent protection; Overtemperature protection | Overvoltage protection; Overcurrent protection; Overtemperature protection |
| Parameter | Unit | Model 1 | Model 2 |
|---|---|---|---|
| Duty type | — | S2 | S2 |
| Ingress protection | — | IP40 | IP40 |
| Cooling method | — | IC410 | IC410 |
| Ambient operating temperature | — | -20℃~50℃ | -20℃~50℃ |
| Insulation class | — | F | F |
| Dielectric strength | — | 500V 1kHz 1A 1ms | 500V 1kHz 1A 1ms |
| Insulation resistance | — | 100MΩ 20℃ | 100MΩ 20℃ |
| Noise | — | 60dB/1.0m | 60dB/1.0m |
| Temperature sensor | — | NTC MF52B 103F3950 | NTC MF52B 103F3950 |
All data are provided for U= 48 V and T= 25°C, unless otherwise specified. Specifications for different voltage levels or other operating limits, and corresponding simulation models, are available upon request.
Have a torque-speed profile or mounting drawing?
Send it with the duty cycle and controller requirements for a model-specific engineering review.
02 · Check interfaces
Resolve the mechanical and electrical stack
Compare the original drawing with the mating parts, loads, cable route, connectors, supply, communication protocol, and feedback requirements.
03 · Confirm the build
Request configuration-specific evidence
Confirm the selected Model 1/Model 2 configuration, current drawing revision, option content, test conditions, and validation evidence before freezing a design.
Original drawing and motor performance map
The drawing is reproduced from the supplied source image unchanged, including any visible source mark. The performance-map image is also used unchanged. Its graphic identifies torque, speed, power, current, and efficiency axes, but does not identify curve names or a Model 1/Model 2 configuration.
Nearby catalogue records to compare
These links help compare published data within the same product set. Similar headline values do not make actuators interchangeable.
Planetary · Model 1
MGA-PJ-100-20-10
40 Nm rated torque · 170 Nm peak torque · 10:1 ratio
Compare source dataPlanetary · Model 1
MGA-PJ-105-27-18
80 Nm rated torque · 400 Nm peak torque · 18:1 ratio
Compare source dataHarmonic · Model 1
MGA-HJ-80-100
108 Nm rated torque · 304 Nm peak torque · 100:1 ratio
Compare source dataFor engineering and sourcing teams
Make the first review specific
Include the project inputs that let an engineer compare the source data with your mechanism. Unknown requirements can stay open; they should not be replaced with assumed operating limits.
- Target continuous and peak output torque, including duration and cycle rate
- Required output speed, acceleration, reversals, and duty type
- Mounting drawing, mating parts, bore/shaft, cable path, and external loads
- Supply voltage, drive/controller, protocol, encoder, brake, and protection needs
- Ambient temperature, contamination, shock, noise, and service-life targets
- Prototype or production stage, quantity range, destination, and validation plan
MGA-PJ-100-20-18 frequently asked questions
What torque and speed does MGA-PJ-100-20-18 list?
Model 1 lists 60 Nm rated torque and 300 Nm under the source label “Peak torque (>3 s),” with 60 RPM rated speed and 106 RPM peak speed. The catalogue operating-condition note below applies unless a field is specified otherwise.
What do Model 1 and Model 2 mean?
The catalogue labels its columns Model 1 and Model 2 but does not define the configuration difference. This page preserves both columns as printed. Confirm the intended build before choosing a configuration.
Are the listed values a complete duty-cycle guarantee?
No. Use the table as a source-backed screening record. Confirm the required torque-speed profile, peak duration and repetition, duty cycle, thermal limits, mounting loads, controls, and operating environment before design release.
Which motor-performance-map curves apply to each configuration?
The supplied map shows axes for torque, speed, power, current, and efficiency but does not label the curves or identify a Model 1/Model 2 configuration. Confirm the applicable configuration and test conditions before using the map for controller or thermal sizing.
Review MGA-PJ-100-20-18 against your load, interface, and operating envelope
Share the torque-speed profile, peak duration, mounting drawing, power and control requirements, quantity range, and target validation. An initial review identifies missing inputs and next steps; it does not confirm performance, price, stock, or delivery timing.
An initial review identifies missing inputs and next steps. It does not by itself confirm feasibility, performance, price, or delivery timing.