permanent magnet motor laminations

Get more power from your motors with Sino laminations. Our parts help your motors run cooler, last longer, and use less energy. There is a constant push for electric motors to have more power, be more efficient, and be more reliable. This is especially true for tough jobs like powering electric vehicles (EVs). Because of this, we need to completely rethink how the motor’s magnetic core is made.

No Products found

DC Gear Motor Solutions for Industrial & Commercial Applications

Engineered for precise speed control and torque multiplication in compact envelopes.

Istar designs and manufactures robust dc gear motor assemblies that integrate brushed or brushless motors with optimized gear trains. We focus on delivering predictable performance for OEMs requiring reliable motion in tight spaces, without the constraints of off-the-shelf standard parts.

01
1
Torque-Optimized
Gear ratios from 3:1 to 3000:1 to match your load requirements.
02
2
Space-Efficient
Diameters ranging from 6mm micro drives to 60mm industrial units.
03
3
Configurable
Shafts, flanges, voltages, and encoders tailored to your housing.
04
4
Consistent
Automated winding and gear hobbing ensure batch-to-batch uniformity.

Explore Our Series

Select the architecture that fits your specific torque, noise, and space constraints.

Micro DC Gear Motor

Precision planetary systems for
restricted spaces.

Diameter: 6mm – 16mm.
Focus: High precision, low weight, miniature footprint.
Ideal for: Medical devices, electronic locks, optical equipment.

Small Geared DC Motor

Versatile power for general automation and commercial devices.

Diameter: 20mm – 37mm.
Focus: Balance of cost, noise performance, and durability.
Ideal for: Vending machines, automated curtains, home appliances.

High Torque DC Motor with Gearbox

Robust transmission for heavy loads and
industrial duty.

Diameter: 42mm – 60mm+.
Focus: Shock resistance, high radial load capacity, continuous duty.
Ideal for: AGVs, conveyers, heavy-duty actuators.

Small Geared DC Motor 2

Robust transmission for heavy loads and
industrial duty.

Diameter: 42mm – 60mm+.
Focus: Shock resistance, high radial load capacity, continuous duty.
Ideal for: AGVs, conveyers, heavy-duty actuators.

Featured Solutions

Representative configurations to demonstrate customization capabilities. (Note: These are platform examples. We manufacture to your specific torque and speed curves.)

10mm Micro Planetary

Best for: Intelligent security locks and insulin pumps.
Customizable options: Gear material (plastic/metal mix for noise reduction), shaft D-cut.
Who it’s for: Medical and security device engineers needing sub-12mm widths.

16mm Coreless Integration

Best for: Robotics grippers requiring fast response and low inertia.
Customizable options: Coreless motor winding, precious metal commutation.
Who it’s for: Robotics OEMs prioritizing efficiency and battery life.

25mm Spur Geared Unit

Best for: Valve actuators and paper feeders.
Customizable options: Off-center output shaft, voltage (12V/24V), suppression capacitors.
Who it’s for: Automation designers looking for cost-effective torque.

42mm Heavy Duty Planetary

Best for: Industrial winches and robotics chassis.
Customizable options: Ball bearings on output, hardened steel gears, IP54 sealing.
Who it’s for: Industrial equipment manufacturers needing high shock load resistance.

Right-Angle Worm Drive (Series W)

Best for: Conveyor belts and applications requiring self-locking.
Customizable options: Dual output shaft, 90-degree orientation.
Who it’s for: Engineers with strict lengthwise space constraints.

Applications

Proven integration across demanding industries.
We supply the geared dc motor technology behind critical movement in automation and daily life.

Medical Technology

Peristaltic pumps, surgical tools, and drug delivery systems requiring precise dosing.

Industrial Automation

Conveyor diverters, AGV wheel drives, and robotic end-effectors.

Smart Home & Security

Electronic deadbolts, motorized furniture, and automated window treatments.

Automotive

Seat adjustment mechanisms, trunk latches, and HVAC actuators.

Banking & Retail

ATM cash dispensers, receipt printers, and vending mechanisms.

Why Choose Istar

Technical partnership that goes beyond the catalog.

As a specialized dc gear motor manufacturer, Istar bridges the gap between low-cost components and high-end custom engineering.

Engineering Depth

We verify gear strength calculations and motor curves before prototyping.

Supply Chain Stability

Reliable sourcing of magnets, copper, and steel ensures we remain a consistent dc gear motor supplier even during market fluctuations.

Quality Control

100% end-of-line testing for current, speed, and noise; gearboxes are audited for backlash and grease distribution.

Direct Communication

You speak directly with technical sales who understand inductance, gear efficiency, and duty cycles.

How We Work

A transparent process to move from concept to mass production.

Analysis

Send us your required torque, speed, voltage, and space envelope.

Proposal

We select the optimal motor-gearbox combination and provide a theoretical curve.

Prototyping

We build samples (usually within 7-10 days) for your bench testing.

Validation

You test the sample; we iterate on winding or gear ratio if necessary.

Pilot Run

Small batch production to verify process stability and consistency.

Mass Production

Full manufacturing with agreed QA standards and logistics scheduling.

How We Work

A transparent process to move from concept to mass production.

Analysis

Send us your required torque, speed, voltage, and space envelope.

Proposal

We select the optimal motor-gearbox combination and provide a theoretical curve.

Prototyping

We build samples (usually within 7-10 days) for your bench testing.

Validation

You test the sample; we iterate on winding or gear ratio if necessary.

Pilot Run

Small batch production to verify process stability and consistency.

Mass Production

Full manufacturing with agreed QA standards and logistics scheduling.

Selection Guide: Specifying Your DC Gear Motor

Critical factors to consider to avoid over-engineering or premature failure.

01
1
Defining Torque and Speed
Calculate the working point, not just the stall torque.
Identify the continuous torque required for normal operation.
Ensure the peak torque (startup/acceleration) does not exceed the gearbox safety limit.
Common Pitfall: Selecting a motor based on No-Load Speed without accounting for the speed drop under load (typically 10-20% for brushed motors).
02
2
Gearbox Architecture Selection
Choose the transmission type that aligns with your noise and efficiency goals.
Planetary: High torque density, coaxial, good efficiency (70-90%).
Spur: Cost-effective, offset shaft, slightly lower torque capacity.
Worm: Self-locking capability, 90-degree output, lower efficiency.
Boundary: Do not use simple spur gears if the application requires high shock resistance.
03
3
Voltage and Current Limitations
Match the motor winding to your power supply capabilities.
Standard windings often target 12V or 24V, but we customize for 6V to 48V.
Check your power supply’s max current; the motor’s stall current must not trip your system protection.
Note: Higher voltage does not automatically mean more torque; torque is primarily determined by current and gear ratio.
04
4
Duty Cycle and Thermal Management
Heat is the enemy of DC motors.
Continuous Duty: Requires a larger motor frame or lower current density to dissipate heat.
Intermittent Duty: Allows for smaller motors to be overdriven for short periods.
Pitfall: Using a sealed, plastic-geared motor for continuous high-load running will lead to thermal deformation of gears.
05
5
Environmental Factors & Noise
Where will the motor live?
Noise: Helical gears and plastic first-stages reduce dB levels significantly.
Environment: Dust and moisture require IP ratings (IP54/IP65) and sealed bearings.
Boundary: Standard brushed motors create sparks; avoid them in explosive environments unless using brushless alternatives.

Frequently Asked Questions

Q1. What information do you need to provide an accurate quotation?

To provide a comprehensive quote, we ideally need a 2D drawing (PDF) and a 3D model (STEP/IGES) of your stator/rotor design. Please also include material specifications, required tolerances, annual production volume, and any specific assembly or testing requirements. The more detail you provide, the more accurate our quote will be.

Q2. Can you modify the output shaft dimensions?

Yes. As a flexible dc gear motor manufacturer, we frequently customize output shafts. Options include D-cut, keyway, cross-drilled holes, threaded shafts, or specific lengths to interface with your mechanics.

Q3. What is the typical life span of a brushed geared dc moto

Life span depends on load and speed. A typical brushed motor with metal gears may last 2,000 to 4,000 hours under rated load. For applications requiring 10,000+ hours, we recommend a brushless (BLDC) solution.

Q4. Do you manufacture the gearboxes in-house?

Yes, we produce our gear trains to control quality and cost. This makes us a competitive dc gear motor supplier for OEMs who need specific gear ratios that aren't available in standard catalogs.

Q5.What is the advantage of a planetary vs. spur gearbox?

A dc gear motor with a planetary gearbox shares the load across multiple planet gears, providing higher torque capacity and better durability in a smaller package compared to spur gears. However, spur gears are generally quieter and more cost-effective for low-torque applications.

Q6.Is it safe to source a high-quality dc gear motor in China?

Absolutely. China is the global hub for precision motor manufacturing. We utilize imported Swiss and Japanese gear hobbing machines to ensure our tolerances match Western standards, offering a high performance-to-cost ratio.

Q7.Can you add encoders or brakes to the motors?

Yes. We can integrate magnetic or optical encoders for speed/position feedback. Electromagnetic brakes can also be added for "power-off" holding torque applications.

Q8.What is your MOQ (Minimum Order Quantity)?

For standard configurable models, our MOQ is low (typically 50-100 units). For highly custom tooling or non-standard windings, the MOQ may start at 500-1,000 units.

Q9.How do you handle gear backlash?

Standard industrial gearboxes have some backlash (1-3 degrees). For precision positioning applications, we can assemble "reduced backlash" versions using tighter tolerance gears, though this may impact cost.

Q10.Can I run a 12V motor at 24V?

Technically yes, but it will run twice as fast and may overheat or exceed the gearbox's speed limit. It is better to request a 24V winding modification so the small geared dc motor operates efficiently at your supply voltage.

Q11.Do you offer low-noise options for medical devices?

Yes. We use varying gear materials (combining engineering plastics with metal) and specialized grease to dampen vibration, making them suitable for patient-environment medical devices.

Request Your Engineeering Proposal

Get a reliable drive solution tailored to your product’s specific load and life requirements.