36mm Brushless DC motor with Planetary Gearbox

♦ Basic Info:

This page is for teams looking at a Ø36mm brushless gearmotor with a planetary gearbox—typically when a direct‑drive BLDC is too fast and doesn’t have enough torque at the output.

  • Model: IND-36GMB3650
  • Diameter: 36mm
  • Motor length: 50mm
  • Supply range: 22–26V DC
  • Gearbox: planetary, multi‑stage options

 

♦ Applications:

We see this size used in compact mechanisms where the load is not “micro” anymore, but the space is still limited—examples include smart home / security actuators, medical devices, and some power tool subassemblies. Whether it’s a good fit depends on the duty cycle and the required torque margin.

Outline drawing

 

Customizable items: 1. Length and shape of the shaft; 2. Voltage, output speed, torque, etc. ; 3. Adding connectors, lead wires; 4. Adding gears to shaft; 5. Adding encoder.

The basic parameters are for reference

 

Ratio MPN Voltage No Load On Load Stall
Operating                                  Range (V) Rated Voltage(V) Current (mA) Speed                  (rpm) Current (mA) Speed                       (rpm) Torque                    (g.cm) Current (A) Torque                    (g.cm)
4 IND-36GMB3650-4 22.0-26.0 24 200 1600 1000 1300 500 2 2000
100 IND-36GMB3650-100 22.0-26.0 24 160 65 600 120 500 2 6000

Gearbox sheet

Gear box length/L(mm) Number of stage Gear Ratios
26.5 1 1/4
38.5 2 1/19
48.5 3 1/51 1/100 1/139
55.5 4 1/189 1/264 1/369 1/516 1/720

*Note: Inter-rotor BLDC motor, sensor

 

Choosing the ratio (how we normally size it)

Gear ratio selection is straightforward in principle:

Ratio moves you toward the target output RPM
It also changes torque margin and efficiency (and can affect noise/backlash)

If you send the basics below, we’ll propose a ratio/stage combination and confirm a working point:

target output RPM under load
continuous torque & peak torque
duty cycle (run time, starts/hour, any end‑stops or jams)
ambient temperature and any airflow/heat sinking assumptions
shaft/mounting drawing (recommended)

Integration items we can align early

Most delays happen because the mechanical interface is decided late. If you already know them, share:

  • shaft style/length, tolerance notes
  • connector type and cable exit direction
  • any encoder requirement (if your control loop needs feedback)

 

Engineering files (available on request)

For integration and validation work, we can provide:

  • motor curve / torque–speed curve (with current reference under stated conditions)
  • 3D STEP + 2D outline drawing
  • lifetime estimation based on your duty cycle and load profile (assumptions stated)

 

FAQs

 

Q1: 4:1 vs 100:1—how do I pick a ratio?

Start from the output requirement: RPM under load and torque (continuous/peak). If you share those two numbers plus the duty cycle, we can recommend the ratio/stage option and check current/thermal margin.

Q2: What information do you need to avoid a wrong sample selection?

Output RPM under load, continuous/peak torque, duty cycle, end‑stop/stall events (if any), voltage range, and the mechanical interface drawing.

Q3: Can this run continuously?

It depends on the working point and thermal path. Continuous duty is possible, but we need your load and ambient conditions to confirm temperature rise and expected life.

Q4: What should I send for a fast quotation?

Voltage range, target output RPM (under load), continuous/peak torque, duty cycle, space limit (OD/length), and a shaft/mounting drawing if available.

Q5: Can you provide motor curves and CAD?

Yes. Motor curve data and STEP/2D drawings are available on request for engineering review.

Q6: Do you provide lifetime estimation?

Yes—based on duty cycle and load profile, with assumptions stated so your team can use it in validation planning.

Motor Customization Guide

Please provide your detailed requirements, and our engineers will offer you the optimal solution tailored to your specific application.

Contact Us

You need our support, and we are ready to provide assistance.

Motor products pose complexities in understanding, specifying, and integrating, with no industry standards. We offer expertise to mitigate design, manufacturing, and supply risks.

Contact our team now.

You can easily upload your 2D/3D CAD design files, and our sales engineering team will provide you with a quote within 8 hours.

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Contact Us

You need our support, and we are ready to provide assistance.

You can easily upload your 2D/3D CAD design files, and our sales engineering team will provide you with a quote within 24 hours.

Contact Us

You need our support, and we are ready to provide assistance.

Motor products pose complexities in understanding, specifying, and integrating, with no industry standards. We offer expertise to mitigate design, manufacturing, and supply risks.

Contact our team now.

You can easily upload your 2D/3D CAD design files, and our sales engineering team will provide you with a quote within 24 hours.