FAQ

Start with the application and the work the servo must do. Include the load, required motion, speed, available space, supply voltage, control method, and estimated quantity. If you already have a model in mind, send its full model number and the specifications that matter to your project.

Compare these requirements with the data for the exact model. Mark any unknown details so they can be reviewed.

Check the voltage, units, and test conditions stated with each torque value. Also check how the supplier defines the figure. A headline torque value alone does not confirm that a servo is suitable for your application.

For a review, include the load, distance from the output shaft to the load, motion range, operating speed, and how often the motion repeats. Use the data sheet for the exact model. Do not treat an unconfirmed maximum or stall figure as a continuous operating rating.

Check the operating voltage and current requirements for the exact servo. Include the power supply or battery details, the number of servos, and whether they will move at the same time. Do not assume that a supply is suitable only because its voltage matches one published value.

Send the relevant product data, wiring information, and expected operating conditions with your request. If the required current or connection details are missing, ask for confirmation before you select the supply or connect the servo.

Compare the servo’s control method with the signals and connections supported by your controller. Check the control protocol, signal range, connector, pin assignments, and supply requirements. The same connector shape does not confirm electrical or control compatibility.

Send the exact servo and controller model numbers. Include the relevant wiring diagram or interface specifications if available. Identify any limits on travel or required feedback so the review covers the intended operation, not only the physical connection.

Compare the replacement with the original servo’s electrical, control, and mechanical requirements. Check the body dimensions, mounting holes, output shaft, arm connection, connector, travel range, and required performance. A similar appearance or torque label is not enough to confirm a replacement.

Send the original model number, its specifications, installation dimensions, and clear photos of the mounting and connections. State which parts must remain unchanged. If a required detail cannot be verified, keep it open for confirmation before ordering.

Use the Product Quote page or one of the contact channels shown there. Include the full model number or component type, estimated quantity, destination country or region, and the main technical requirements. Add a contact method for the reply.

For a custom part, arrange how to share the drawing or design details through the selected contact channel. Identify any requirements that are still open.

Yes. Describe the application and the task the component must perform. Include the available space, load, motion, power supply, control method, and estimated quantity where known. A reference model or photo can help explain what you need, but it does not replace confirmed specifications.

If you do not know a requirement, mark it as unknown. Any suggested model or supply option must be checked against the final requirements before you place an order.

State the exact model or part requirements and the quantity needed for evaluation. Explain what you plan to check, such as fit, control compatibility, or performance in your application. Ask for the available quantity, sample price, and delivery conditions for that specific request.

Sample availability and minimum order quantities must be confirmed for the selected item. Do not assume that a sample is free or that the same terms apply to every model. Keep evaluation requirements separate from any later production quantity.

Request confirmation for the exact model or approved part specification and the quantity you need. For custom parts, include the material, dimensions, tolerances, and finish requirements. Changes to these details can require a revised quote.

Before agreeing to an order, confirm the currency, included items, minimum quantity, availability, lead time, and any delivery charges or other agreed costs. Keep the confirmed quote as the reference. A catalog listing alone does not confirm current stock or the terms of your order.

City of Machinery develops and manufactures servos and related parts for educational robots, intelligent robots, and RC models. Our applications include biped robots, quadruped robots and robotic arms. Share your project application and key requirements so the team can review the relevant product information.

City of Machinery designs and develops servos in-house. Our facilities include 10 production lines, 30 CNC machines, more than 100 inspection and test units, and a 400 m² laboratory.

City of Machinery develops customized servo solutions for OEM and ODM projects. Send the application, required size, torque, control interface, and expected quantity. The team can then discuss development, samples, and production for the specific project. Project scope and terms are confirmed individually.

Each request is reviewed against the stated application and requirements. Mark any open details so they can be confirmed before ordering. For custom CNC parts, share the drawing and the details that affect the part. Confirm the final specification, price, availability, and lead time for the exact request in writing.

Prepare the drawing or CAD model, part quantity, material requirement, dimensions, tolerances, and surface finish. Identify critical features such as mating surfaces, holes, and threads. Include the intended use where it affects the requirements.

Use the Product Quote page to arrange how to share your files. Confirm the supported file format through that contact channel. If the material or a tolerance is not final, label it as open instead of leaving the reviewer to assume a value.

List the requirements that are confirmed and identify each open decision. Explain the function of the part, its operating conditions, and the surfaces or dimensions that affect fit. State whether appearance, weight, or another project requirement limits the options.

Ask for the available options to be reviewed before the quote is finalized. Mark any undecided material or tolerance as open. The final material, tolerances, and finish must be agreed for the specific part before production is arranged.

Check that the drawing and model refer to the same part revision. State the units, quantity, material, and finish requirements. Make critical dimensions, hole positions, threads, and mating features clear. Identify any dimensions that must be checked before assembly.

If the files contain conflicting or incomplete details, point these out in your message. Include the revision identifier in later changes so the quote can be matched to the correct design.

Prepare the 3D model or drawing, quantity, dimensions, and intended use. State whether the part is for a visual model, a fit check, or a functional application. Include any known material, tolerance, surface, and appearance requirements.

Use the Product Quote page to arrange how to share the design and confirm the supported file format. If a requirement is not final, explain what the part must achieve.

Describe the conditions the printed part must meet. Include the expected load, temperature, environment, assembly method, and appearance requirements where relevant. If you have already selected a material or printing process, state it clearly and explain any limits on alternatives.

If you have not selected a material, mark that decision as open. Ask which available options can be reviewed against your requirements. Do not assume that every material or process is available, or that a visual prototype is suitable for a functional application.

Identify the dimensions and surfaces that affect assembly or function. Include the parts that must fit together, the required clearances or tolerances, and any visible surfaces with finish requirements. State the units and refer to the correct model revision.

Discuss these requirements before confirming the quote. If an evaluation part is needed, ask about its feasibility, cost, and timing for the selected design. Confirm the acceptance requirements before production instead of assuming that the model alone defines every fit or finish detail.

Include the exact product or approved part specification, quantity, destination country or region, and required arrival date. Provide the delivery location details needed for a shipping quote through your selected contact channel.

Ask for the production or preparation time, shipping method, estimated transit time, delivery charges, and agreed responsibilities for any additional costs. Keep preparation time separate from transit time. Availability and delivery estimates must be confirmed for the specific request before you plan around them.

Request the documents needed to check your application. For a servo, these may include the model data sheet, dimension drawing, control information, and connector or wiring details. For a custom part, confirm the drawing revision and the agreed material, dimensions, tolerances, and finish.

Document availability must be confirmed for the exact item. Check that the model number and revision match your quote. Raise missing or conflicting information before ordering.

Include the order reference, full model number or part identifier, and a clear description of the issue. Add photos of the product label, relevant connections, or the affected feature. For an operating issue, include the supply voltage, controller, settings, and the steps that produced the symptom.

Contact the team through the Product Quote and contact page. Include the agreed specifications and order reference. We will review the details and discuss the next steps.