Reversible AC Gear Motors – Heavy Duty 60 Watt 100mm

Selecting a Gearbox

Before you select an AC gear motor, you have to choose a gearbox that has the right torque and speed for your application. To help you make this determination, you need to know the following:

• Life curve – The load a gearbox can withstand based on its components’ mechanical strength.
• Efficiency curve – The efficiency at any given torque.
• Thermal capacity – The amount of heat a gearbox dissipates at the maximum (allowable) gearbox temperature; also called “heat” or “allowable dissipated energy.”
• Maximum input speed – The range of input speeds, up to the maximum speed, that a gearbox can handle.

After calculating the torque and motor speed, choose the gearbox ratio so you can determine the best motor output.

Checklist for Selecting the Right AC Gear Motor

Use the following list to help you understand the major requirements you need from a gear motor.

General Information

• Envelope size
• Overhung and side loads
• Mounting type and orientation
• Lubrication type

Environment

• Ambient/environmental temperature
• Application temperature
• IP (ingress protection) rating

Input Power Source

• Frequency in Hz
• Control type, if applicable
• Maximum current in amps
• Voltage

Gear Motor Specifications

• Life expectancy
• Size
• Weight
• Noise

Gear Motor Performance

• General speed and torque
• Start and stall torque
• Duty cycle

After Selecting the Gearbox and AC Gear Motor

• Calculate the gear motor’s outputs.
• Compare the gear ratios.
• Analyze the strength of the gearbox.
• Review the gearbox’s thermal characteristics.
• Design the mechanical interface.

Familiarity with a gear motor’s application and specifications can help you make the right decision about what components to choose – and avoid risks like overheating, reduced bearing life or reduced gear life. For help selecting the right components from a gear motor catalog, or designing a custom gear motor, contact Sinotech.

Progressive Die Stamping Process

Metal stamping begins with sheet metal that machines, or dies, can form, bend, stretch and draw. The metal must have the ability to stretch and deform without breaking.

Progressive die stamping, as well as automotive stamping, works like this:

1. A machine lubricates the sheet metal by applying a solution with a roller, drip, spray or flooding technique. In some cases, employees may lubricate the metal by hand with a brush or roller.

2. A machine feeds sheet metal through the different stations, or stamping presses, of a stamping die.

3. Each station performs a progressive operation to form the piece of metal accordingly.

4. The last machine separates the stamped part from the “scrap” metal and ejects it from the die set.

Progressive Die Stamping Benefits

• Versatility: You can create everything from micro-miniature parts to large parts that need automotive stamping. Dies can stamp a variety of materials, including aluminum, zinc, titanium, brass, copper and steel.
• Speed and efficiency: Depending on the part, a press can shape more than 800 parts per minute.
• Strength and durability: Dies made from tool steel have the ability to resist abrasions, withstand high shock loads and stay sharp.
• Precision: Stamped parts are uniform in quality, even when the metal is 0.0015 inches.

Sinotech offers all the progressive die stamping and automotive stamping capabilities mentioned above. Contact us to learn more or to order a part that needs custom metal stamping.

Sinotech Investment Castings

One of the most significant advances in investment casting is the creation of rapid drying chambers. These chambers reduce the time it takes to complete the layering process, which used to take several days. Because the new drying chambers allow the investment casting manufacturer to create layered castings more quickly, the process is more efficient, has shorter lead times and features decreased cost per casting. As technologies advance, the casting process will become even faster and more efficient.

If you need to manufacture a part or want to learn more about the steel investment casting process, contact Sinotech.

Brushless DC Motors

The Sinotech Experience

When you first contact Sinotech because you need, for example, an AC gear motor or a BLDC motor, you meet with our design consultants to determine the best type of motor for your needs. Our consultants can help you streamline your design, find ways to cut costs on components and anticipate production challenges.

Once your project is ready, our experts in China, Taiwan and Korea scout out factories to determine which best meet your requirements. After reviewing the choices available and negotiating contract details with the help of our native, bilingual staff, production begins.

During the manufacturing process, expert auditors frequently visit the factory performing the work to ensure the quality of the product and the timeliness of the project. You’ll receive frequent status reports and digital photos of the tooling process, as well as the opportunity for video conferences with Sinotech’s bilingual staff. Our tailored service gives you the legal protection of working with a U.S. company; product liability protection; and personal support on which you can count. If you like, you can even visit the factories to see the tooling and production process in person.

When you receive the finished motors, Sinotech will follow up with you to make sure the products meet the quality standards and regulatory requirements you specified.

Fully Integrated Motor Solutions

While you can order off-the-shelf motors from Sinotech, you can also order custom motors built according to your design specifications. Integration with brakes, encoders and drives is no problem. Also available are IP-rated motors for dust or water intrusion-related applications.

To learn more about having your motors built overseas without the risks that often come with outsourcing, contact Sinotech today.

Gear Motors

The following factors affect the durability, performance and efficiency of gear motors:

Environment of use. Inappropriate environmental temperatures and high humidity can shorten the life of an AC or DC gear motor. While in use, the ideal temperature range for a gear motor is generally between 10 and 60 degrees Celsius. Environmental relative humidity shouldn’t exceed 85 percent.

Load conditions and impact loads. When a load exceeds a gear’s rated torque, the wear and tear makes the part increasingly inefficient. Exceeding the permitted thrust or overhang loads can also have a negative impact on a gear motor.

The gear motor’s operation. Mode of operation, frequent starting, reversing the turning direction momentarily and long-term, continuous operation can all shorten a gear motor’s life span.

Using the output shaft for forced turning. When you do this, the motor turns into an electrical generator and speed-increasing mechanism, which can damage the gears and other internal parts of the machine.

Pulse drives. Short breaks, PWM controls and counter electromotive force affect a gear motor’s durability.

Using nonstandard voltage instead of the recommend voltage.

Storage. Store gear motors in a location whose temperature doesn’t exceed 65 degrees Celsius, with low relative humidity and no materials that generate toxins or corrosive agents.

To learn more about increasing the longevity of a DC or AC gear motor, or for help finding the right one for your needs, contact Sinotech.

As you shop for custom stamping or contract stamping services, look into the following:

Design help. A good vendor offers design assistance to ensure an economical stamping process – and to ensure the finished part performs well.

Production options. Progressive die stamping may not be the only, the best or most cost-effective, option available. Alternatives may also include water jet cutting, laser cutting or turret presses.

Tooling options. If you have to make the choice between soft tooling and hard tooling, consider the volume you need produced; the possibility of future orders; the cost of producing soft tools and redundant tools; and production alternatives that can help offset hard tooling costs. Furthermore, consider a vendor’s ability to provide maintenance for existing and future tools.

Materials available. When you need die or automotive stamping services, compare the materials a prospective vendor offers. Evaluate the end-user benefits and performance characteristics of each.

Experience with ISO/TS 16949 and Level 3 PPAPs. This TS level of quality control requires studies such as Capability Studies, Failure Modes and Effects Analysis, and Capability Studies as well as complex documentation.  Be sure your stamping vendor has done these before.

Production volumes. A vendor may offer you a special deal when you order a certain quantity. Determine whether ordering extra inventory is worth the risk; a smaller production run at a slightly higher price may be the better choice.

Coating and secondary metal processing services. If a metal stamping vendor isn’t set up to apply special coatings or secondary services to a product, it may affect the quality and price of your order.

Storage. Verify if a vendor can store, manage and ship your order as needed.

The Sinotech Advantage

Sinotech offers automotive progressive die stamping and line die stamping services that are designed to reduce your commercial risks.

Our expert staff strives for the lowest price negotiations and monitors the tooling process directly inside the factory. To further ensure quality, we inspect at every production stage and manage the production schedule to make sure you have your order within the expected timeline.

Contact Sinotech to learn more about the metal stamping services we offer.

A controller employs integrated-gate bipolar transistors (IGBTs) or field-effect transistors (FETs) to power a motor’s coils. To switch the current between a BLDC motor controller’s different phases, it uses electronic commutation drive coils. To ensure the motor serves its intended purpose, you’ll need to determine which functions you seek from the motor controller.  Sinotech’s motor consultancy services can make motor selection customization easy.

Features of BLDC Motor Controllers

• Automation: Allows for use with external control circuits.
• Construction:  Uses a heat sink to dissipate power from the IGBT’s and FET’s.  The PCBs of some controllers at potted in epoxy to prevent damage due to vibration or moisture.
• Sensors:  The output of the motor’s Hall effect sensors provide the feedback to the BLDC controller to assure constant speed or torque as needed.  Some controllers are designed to operate BLDC motors that do not have Hall effect sensors yet still control speed, but not with the same precise control.
• Speed control: The controller may have inputs for applying linear voltage control as well as  inputs for using Pulse Width Modulation (PWM) for controlling BLDC motor speed.
• Efficiency: A well designed controller plus a high efficiency BLDC motor can result in overall system efficiency of 95% or more.

Check out Sinotech’s DC motor catalog for a full list of options, features and specifications.

Sinotech’s Process

At Sinotech, we aim to deliver the highest-quality services and products. Because we work with factories in Asia that manufacture parts such as BLDC motors, Sinotech employs bilingual staff members who are control and quality assurance experts. Our on-site engineers supervise, inspect and audit the factory during production to ensure that you have a positive, professional experience.

As the factory completes your order, we hold quality assurance meetings, generate PPAP documents (if you’re in the automotive industry) and follow up with you to make sure your products meet your regulatory and quality guidelines.

Contact Sinotech today and learn more about how our production process can help your business succeed.

120 Watt 90mm AC Gearmotors

Basic Parameters

When choosing an AC gear motor, it’s important to know the basic specifications you need. Before you begin your search, know your specification requirements for the following parameters:

• Horsepower
• Speed
• Efficiency
• Maintenance
• Product life
• Starting torque
• Noise
• Speed regulation
• Other product-specific requirements

Package Size

As you design an AC gear motor, use the motor size and speed requirements to come up with the optimal output power. By comparing the general performance and desired torque with the application requirements, you can determine the best frame size for your gear motor.

Gearbox Options

There are four basic configurations an AC gear motor can have: planetary, parallel shaft, right angle bevel and right angle worm. There are also gearing components to consider: worm, spur, bevel and helical. The right combination helps ensure the gearbox’s overall performance.

Reducer Matrix

Just as you must consider the basic parameters you need, you’ll need to determine the key reducer parameters, such as:

• Noise
• Duty cycle
• Maximum input speed
• Efficiency
• Noise
• Back drivability
• Maximum torque

It’s important to keep in mind that the efficiency of an AC gear motor depends on the quality of the gears, ratio, lubrication, gear type, bearing type and side loading.

As you decide on the gearbox attributes you seek, don’t forget to weigh the limitations of each. The most common limitations are thermal (heat) and mechanical (wear).

Applications

In addition to the cost, torque and speed of an AC gearbox, it’s helpful to pick an AC gear motor based on your primary constraints. As you design the gearbox, make sure you know the desired:

• General requirements – Envelope size, lubrication selection, side loads, overhung loads and mounting type and orientation
• Input power source – Voltage, maximum current, frequency and control type
• Gear motor specifications – Noise, maintenance, life expectancy, size and weight
• Gear motor performance – Starting/stall torque, speed, torque and duty cycle
• Environment – Ambient temperature, application temperature and ingress protection rating

With so many things to think about when choosing an AC gear motor, one of the best ways to go about the task is with the help of a motor consultant. After going through our gear motor catalog, note the items of interest and talk with a consultant about how Sinotech can create a product based on your needs.

(Click to view image at full size)