XQ-S9450F 700kg·cm 30V Side-Mount Brushless Servo

XQ-S9450F brushless servo with PWM input, 100 × 50 × 97 mm (122.7 mm overall with side flanges) and 895 g, rated 700 kg·cm (68.67 N·m / 9721 oz·in) at 30 V with 0.210 s/60° no-load speed. Steel geartrain on 8 × ball bearing, 25T-φ11.98 mm spline, 360° customizable travel.

SKU: XQ-S9450F Category:
product
700KG·CM STALL 0.210S/60° NO-LOAD 30V RATED
895G WEIGHT SteelGEARTRAIN 360°TRAVELCustomizable

Overview

The 9450F is the same 700 kg·cm drivetrain as the 9450D, built in the side-mounted configuration: the mounting flange moves to the sides of the case and the output carries a machined lever arm instead of a bare spline. Same 100 × 50 × 97 mm body, 895 g, 24–30 V.

The point of the F layout is the load path. A side-mounted flange takes the reaction torque across a longer bolted face, and the lever arm puts the push-pull rod in line with the load instead of hanging a linkage off a spline. On a 700 kg·cm actuator that difference is what keeps the bracket from flexing.

This page covers the PWM build: a standard 50–333 Hz pulse input, 1500 µs neutral and a 3–4 µs dead band. It is the version to pick when the servo hangs off a receiver or a flight controller and you want nothing between the two. This build is the side-mounted F configuration.

Performance at each supply voltage

Supply No-load speed Peak stall torque Idle current Stall current
24 V 0.300 s/60° (200 °/s) 560 kg·cm (54.94 N·m / 7777 oz·in) 400 mA 18 A
28 V 0.250 s/60° (240 °/s) 650 kg·cm (63.77 N·m / 9027 oz·in) 430 mA 21 A
30 V 0.210 s/60° (286 °/s) 700 kg·cm (68.67 N·m / 9721 oz·in) 450 mA 22.5 A
Specifications scale with supply voltage. When comparing against another servo, compare at the same rail — 700 kg·cm at 30 V and 560 kg·cm at 24 V are not the same machine.

Control specification

Item Specification
Command signal PWM, 50–333 Hz
Amplifier Digital controller
Pulse width range 500–2500 µs, customizable
Neutral position 1500 µs, customizable
Dead band 3 µs
Rotating direction CCW (1000–2000 µs), customizable
Travel 360°, customizable

Mechanical specification

Item Specification Item Specification
Dimensions 100 × 50 × 97 mm (122.7 mm overall with side flanges) Case material Aluminium, CNC
Weight 895 g Geartrain Steel
Bearings 8 × ball bearing Motor Brushless
Output spline 25T-φ11.98 mm Horn Metal lever arm
Lead / connector J30J-15TJL connector, sold separately Mechanical limit No limit
Operating temperature −30 °C to 60 °C Storage temperature −30 °C to 70 °C
Ingress protection Splash resistant (customizable) Travel 360°, customizable

What’s in the box

  • 1 × XQ-S9450F servo
  • 1 × 7075 aluminium horn
  • 1 × mounting screw pack

The J30J-9TJL mating cable is not included; it is ordered separately to suit your harness.

How to size it

The side flange bolts to a face, not to a tray, so the bracket has to be flat and stiff over the full 122.7 mm width. Shim it rather than preloading one corner — a twisted flange shows up as current ripple at the output, not as a servo fault.

Same current budget as the D: 22.5 A stall at 30 V, 450 mA idle. The lever arm also means the load is applied off-axis from the shaft centre, so check the side load against the bearing rating before extending the arm.

FAQ

How is the 9450F different from the 9450D?

Mounting and output: the F is side-mounted with a lever arm, the D has the standard ear-mount case with a bare 25T spline. Drivetrain, torque and current ratings are the same.

What connector does it use?

The PWM, TTL and CAN builds end in a J30J-15TJL connector, supplied separately. The Modbus build ends in a socket, also with the cable ordered separately.

What pulse range does it accept?

The inspection sheet specifies a 500–2500 µs window (800–2200 µs on the 9130/9150) with 1500 µs neutral, both customizable at order. Feeding it outside that window is out of spec.

Can I drive it from a normal receiver?

Signal-wise yes, but check the supply. This servo wants 8.4–16.8 V, not a 6 V receiver pack, so the power rail has to be separate from the receiver’s.

Other interfaces

Same servo, TTL serial: XQ-S9450FTTL
Same servo, CAN bus: XQ-S9450FC
Same servo, RS-485 Modbus: XQ-RS9450FMB

Downloads

Weight 0.895 kg
Dimensions 10 × 5 × 9.7 cm
Interface

PWM

Stall torque

700 kg·cm

No-load speed

0.210 s/60°

Rated voltage

30 V

Weight

895 g

Geartrain

Steel

Case material

Aluminium, CNC

Output spline

25T-φ11.98 mm

Ingress protection

Splash resistant (customizable)

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