DSSERVO BLS4355 55 kg·cm Low-Profile Brushless Servo

Description

DSSERVO BLS4355 Servo: Low-Profile Brushless Design

The BLS4355 servo is a low-profile brushless digital servo listed for robotics and RC applications. Supplier-provided images identify it as a 55 kg·cm-class, all-metal servo and show an IP67 protection rating. Its compact body measures 54.5 × 20.2 × 29.5 mm, according to the supplied dimension drawing. Use the values below as supplier-listed specifications and confirm the exact version and configuration before ordering.

Supplier-listed electrical and performance specifications

Operating voltage: 4.8–8.4 V, at the listed test points above. Torque and current values are supplier-provided figures; actual results can depend on operating conditions.

Control, travel, and dimensions

• Control signal: PWM
• Pulse width: 500–2500 μs; neutral: 1500 μs
• Travel options shown by the supplier: 180° or 270° across the stated pulse range; availability is configuration-dependent
• Dead band: 2 μs; listed control frequency: 50–330 Hz
• Rotation direction shown in the supplier data: counterclockwise over the specified pulse range
• Body dimensions shown on the drawing: 54.5 × 20.2 × 29.5 mm
• Protection: IP67 marking appears in the supplier artwork; verify the rating for the exact purchased version

Applications shown in the product materials

The supplied application graphic lists RC racing and crawler cars, fixed-wing aircraft and helicopters, compact robot joints, industrial automation actuators, drone or security gimbals, and precision instruments. These are application categories presented by the supplier, not independently verified customer deployments. Check the required torque, speed, travel, mounting space, power supply, and control signal for your design.

Wiring and version selection

The supplier wiring diagram shows a three-wire connection. For the 180° version, it labels brown as negative, red as positive, and yellow as the PWM signal. For the 270° version, it labels black as negative, red as positive, and white as the PWM signal. Match the wiring to the exact servo version and controller documentation before powering the unit.

State whether you need the 180° or 270° version. Confirm its wiring colors, controller requirements and availability when requesting a quote.

What is included

Product gallery images show the servo, horn/accessory hardware, dimension drawing, electrical specification table, and wiring information. Confirm the final package contents, lead length, connector, and accessories for the specific order before purchase, as the gallery illustrates product information and may not define every shipment configuration.

Selection notes for the BLS4355 servo

Use the published voltage columns as comparison points for your operating condition. The no-load speed values describe rotation without an applied load; the supplier images do not provide a continuous-duty torque rating, thermal limits, or a service-life figure. Stall torque is a maximum test value and should not be treated as a recommended continuous working load. Size the servo for the actual mechanism, load, and lever arm, then confirm the operating margin with the supplier.

Allow space for the horn, cable, mounting hardware and full movement. Rated working torque, duty cycle, current under load, protection test conditions, connector, cable length and package contents are not specified in the supplied images. Confirm these details for the selected BLS4355 version before ordering.