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16mm Diameter DC Brushless Coreless Motor With Planetary Gearbox

This Φ16 brushless coreless drive supports 6–48V systems and a reduction range from 14:1 to 1621:1. Its multiple gearbox-length options and clearly separated rated and momentary torque values help engineers select a configuration by target RPM, continuous load, short-duration overload, and available axial space.

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16mm BLDC coreless planetary gear motor with wide ratio ladder
Specs

Key Features

This model is a BLDC coreless planetary gear motor built around a very wide reduction ladder and explicit “max momentary tolerance torque” limits, making selection straightforward when you must balance steady output torque and short-duration overload risk.

  • 6V–48V applied range supports broad system voltage architectures
  • Reduction ratio ladder (14 to 1621) provides step-by-step output tuning from mid-speed drive to ultra-low-speed high-torque output
  • Gearbox length steps (18 / 21.6 / 25.3 / 29.0 mm) help you control enclosure length while moving across torque classes
  • Rated torque scales from 0.45 to 51.87 Kg.cm across the ratio set, letting you select torque tier without changing the Φ16 motor platform
  • Max momentary tolerance torque is listed for every ratio, separating short overload capacity from continuous rated torque decisions

For other diameters, brushed versions, encoder-ready assemblies, or different torque ranges, browse our complete planetary geared motor collection.

technical Specs

Motors Specifications

Reduction ratio 14 19.2 29.1 52.7 84.3 157.4 197.7 369.7 741.5 850.3 1621
Gearbox length 18 18 18 21.6 21.6 21.6 25.3 25.3 29 25.3 29
No-load speed 857 625 412 228 142 76 61 32 16 14 7
Rated speed 855 625 410 227 142 76 60 32 16 14 7.4
Rated torque 0.45 0.61 0.93 1.69 2.7 5.04 6.33 11.83 23.73 27.21 51.87
Max. momentary tolerance torque 1.96 2.69 4.07 7.38 11.8 22.04 27.68 51.76 103.81 119.04 226.94

For additional customization or reference configurations, please feel free to contact us.

Why Choose us

SLW Motor Highlights

  • Wide Ratio Ladder for Output Tuning

    The ratio range from 14 to 1621 gives you a large selection window, so you can target output behavior by choosing the nearest ratio step instead of changing motor size.

  • Gearbox Length Steps That Affect Packaging

    Gearbox length changes across ratio clusters (18 / 21.6 / 25.3 / 29.0 mm). That lets you trade torque tier for axial envelope control.

  • Rated Torque vs Momentary Tolerance Torque Separation

    The table lists both rated torque and max momentary tolerance torque, which helps you plan steady load behavior separately from short-duration overload or shock events.

  • Ultra-Low-Speed Output Options

    High ratios push rated speed into single-digit rpm, which suits applications that prioritize slow motion, positioning, or holding-style output behavior.

Custom

Beyond the Standard: Performance Customized

  • 01
    Momentary Overload Boundary Planning
    We set your allowable short-duration overload first using the max momentary tolerance torque row, so shock loads do not exceed the gear train’s temporary capacity.
  • 02
    Ratio-Step Mapping by Target RPM Window
    We map your target output speed to the rated speed row first, then choose the closest ratio step so your mechanism “feels” right without overcompensating in control.
  • 03
    Gearbox-Length Lock-In by Enclosure Limit
    We lock your maximum allowable gearbox length bucket first (18 / 21.6 / 25.3 / 29.0), then shortlist ratios that stay inside the envelope.
  • 04
    Rated Torque Margin Under Continuous Load
    After ratio selection, we validate rated torque margin against your continuous load so the unit runs inside the rated zone instead of relying on momentary torque capacity.
  • 05
    SKU Strategy Across Torque Tiers Without Changing Φ16 Platform
    If you build variants, we group ratios into a small set of gearbox-length buckets so you reuse mounts and wiring while scaling output mainly by ratio step.
  • Momentary Overload Boundary Planning
  • Ratio-Step Mapping by Target RPM Window
  • Gearbox-Length Lock-In by Enclosure Limit
  • Rated Torque Margin Under Continuous Load
  • SKU Strategy Across Torque Tiers Without Changing Φ16 Platform

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FAQ

Frequently Asked Questions

If you share your available space and the driven load type, we can help narrow the most suitable configuration quickly.

How do I choose the ratio quickly?
Match the rated speed to your target RPM first, then confirm rated torque provides margin for continuous load, and finally check momentary tolerance torque for shock events.
Why does gearbox length change across ratios?
Higher reductions typically require more stages, which changes gearbox length. This table shows the length per ratio so you can plan packaging early.
What is “max momentary tolerance torque” used for?
It defines short-duration overload capacity, helping you check whether brief shocks or spikes stay within safe limits.
Which ratios are best for ultra-low-speed output?
The highest ratios produce the lowest rated speeds, which suits slow motion, positioning, or holding-style output needs.
What should I share so you can shortlist options?
Share your target output RPM, continuous load torque, peak/shock torque estimate, duty cycle, and maximum allowable gearbox length.
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