| 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 RS-485 / Modbus build: the same mechanics on a differential serial bus, which is what survives long cable runs and electrically noisy cabinets. Modbus keeps it compatible with industrial PLCs and HMIs.
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 | RS-485 (Modbus) |
| 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-RS9350MB 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.
Does it speak standard Modbus?
The sheet specifies RS-485 Modbus as the command signal. Ask for the register map and the supported function codes before you write the PLC program — they are not printed on the inspection sheet.
How long can the cable be?
RS-485 is differential, so tens of metres are routine at moderate bit rates. Terminate the pair at both ends and keep the power pair separate.
Other interfaces
Downloads
- XQ-RS9350MB inspection specification (PDF, 476 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.
