| 390KG·CM STALL | 0.160S/60° NO-LOAD | 30V RATED |
| 690G WEIGHT | SteelGEARTRAIN | 360°TRAVELCustomizable |
Overview
The 9350 is the heaviest servo in the range: 390 kg·cm at 30 V, 690 g, in a 68 × 35 × 120 mm body machined from 7075 aluminium. Everything structural is 7075 including the output horn, which is a step up from the 6061-class cases used lower in the range.
Six ball bearings support a steel geartrain on a 25T-φ11.8 mm spline. The case has four M6 through-holes on a 68 mm spacing and a 8 mm thick mounting flange — the drawing in Downloads gives the full pattern, because this is a part you design a bracket around, not a part you bolt to a standard tray.
This page covers the TTL build: the same mechanics, commanded over a serial bus so several servos can share one signal line and be addressed individually. Useful when the actuator count outgrows the PWM channels available.
Performance at each supply voltage
| Supply | No-load speed | Peak stall torque | Idle current | Stall current |
|---|---|---|---|---|
| 24 V | 0.280 s/60° (214 °/s) | 320 kg·cm (31.39 N·m / 4444 oz·in) | 200 mA | 5 A |
| 28 V | 0.200 s/60° (300 °/s) | 360 kg·cm (35.32 N·m / 4999 oz·in) | 300 mA | 6.5 A |
| 30 V | 0.160 s/60° (375 °/s) | 390 kg·cm (38.26 N·m / 5416 oz·in) | 400 mA | 7 A |
Control specification
| Item | Specification |
|---|---|
| Command signal | TTL serial |
| Amplifier | Digital controller |
| Dead band | 3 µs |
| Rotating direction | CCW (1000–2000 µs), customizable |
| Travel | 360°, customizable |
Mechanical specification
| Item | Specification | Item | Specification |
|---|---|---|---|
| Dimensions | 68 × 35 × 120 mm | Case material | 7075 aluminium, CNC |
| Weight | 690 g | Geartrain | Steel |
| Bearings | 6 × ball bearing | Motor | Brushless |
| Output spline | 25T-φ11.8 mm | Horn | 7075 aluminium, CNC |
| Lead / connector | Socket, cable sold separately | Mechanical limit | No limit |
| Operating temperature | −30 °C to 65 °C | Storage temperature | −30 °C to 70 °C |
| Ingress protection | Splash resistant (customizable) | Travel | 360°, customizable |
What’s in the box
- 1 × XQ-S9350TTL servo
- 1 × 7075 aluminium horn
- 1 × mounting screw pack
How to size it
At 390 kg·cm the reaction torque on the mounting bracket is the real design constraint. Four M6 bolts on a 68 mm spacing carry it, but the bracket has to be stiff — a flexing plate will show up as lost travel at the output, not as a servo fault.
The 390 kg·cm figure needs 30 V. On 24 V it is 320 kg·cm at 0.28 s/60°, and stall current is only 5 A. If your supply sags under load, size the linkage at the sagged voltage, not at the label.
FAQ
What is the difference between the 9200 and the 9350?
Torque and size: the 9350 is 390 kg·cm in a 68 × 35 × 120 mm, 690 g 7075 case; the 9200 is 250 kg·cm in a 64 × 33 × 88.5 mm, 405 g case. Both run 24–30 V.
Is the cable included?
No. Both models end in a socket, and the mating cable is a separate item so you can order the length and connector the machine needs.
Is the pulse width table valid for this unit?
No. The microsecond window printed on the inspection sheet belongs to the PWM build of the same servo. This unit is commanded over the serial bus — ask for the command set and register map before writing firmware.
How many can share one bus?
The limit is the address space and the current budget of the shared supply, not the signal pair. Keep the bus ground common with the power ground at a single point.
Other interfaces
Downloads
- XQ-S9350TTL inspection specification (PDF, 483 KB)
Torque, speed and current at each supply voltage, mechanical data, control specification, mounting dimensions. - 2D dimension drawing (image)
Mounting hole positions, case depth and overall height; the same drawing is inside the datasheet.
