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12mm Diameter 21 Micro Brushed Coreless Motor With 90 Degree Shaft Gearbox

This 12mm micro brushed coreless motor uses a 90-degree gearbox to turn the output path for right-angle layouts, helping compact devices route motion around tight corners on 3V–12V power.

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  • 12mm Diameter 21 Micro Brushed Coreless Motor With 90 Degree Shaft Gearbox Featured Image
Specs

Key Features

This model is designed around right-angle output geometry. It solves packaging problems where a straight shaft would force extra space, awkward couplers, or complex linkages.

  • 90-degree shaft gearbox redirects output for compact corner layouts and stacked assemblies
  • Fixed gearbox length (10mm across ratios) keeps the mechanical envelope stable while you change performance
  • High reduction range (42–692) supports low-speed motion and higher torque in tight packaging
  • Micro brushed coreless drive keeps control simple for small DC systems without BLDC commutation
  • 18×12×10 gearbox form factor fits small housings where axial length is limited
technical Specs

Motors Specifications

Reduction ratio 42 63 80 158 242 302 346 453 692
Gearbox length mm 10 10 10 10 10 10 10 10 10
No-load speed rpm 179 119 94 47 31 25 22 17 11
Rated speed rpm 166.7 111.1 87.5 44.3 28.9 23.2 20.2 15.5 10.1
Rated torque Kg.cm 0.036 0.054 0.069 0.137 0.209 0.261 0.3 0.392 0.6
Max. momentary tolerance torque Kg.cm 0.6 0.9 1.1 2.26 3.46 4.32 4.95 6.49 9.9

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

Why Choose us

SLW Motor Highlights

  • Right-Angle Output for Corner Packaging

    The 90-degree gearbox changes how you design the mechanism. It lets you route torque sideways to fit shallow housings or offset linkages without extra transmission parts.

  • Constant Gearbox Length Across All Ratios

    Because gearbox length stays at 10mm, you can change reduction ratio without redesigning the enclosure length or mounting clearance.

  • High Reduction Range for Low-Speed Tasks

    Ratios up to 692 allow very low output speed while increasing torque, suitable for small indexing, latching, or slow-motion actuation.

  • Torque Spike Reference for Stop-and-Release Mechanisms

    Momentary tolerance torque is useful when the output hits a stop, releases a latch, or experiences brief stall-like spikes.

Custom

Beyond the Standard: Performance Customized

  • 01
    Output Direction and Linkage Routing Review
    We confirm whether the 90-degree output direction matches your linkage path so you avoid forced bends, misalignment load, or awkward coupler geometry.
  • 02
    Ratio Selection Under a Fixed-Length Constraint
    Because gearbox length is constant, we focus selection on the rated speed and torque window, helping you pick a ratio without changing enclosure depth.
  • 03
    Stop-Impact Margin for Corner Drives
    If your mechanism hits stops or drives a latch, we check your peak load against the momentary tolerance torque to reduce gear tooth shock risk.
  • 04
    Mounting Face Alignment for Right-Angle Loads
    We review your mounting reference and load direction so side loads do not amplify wear in a compact right-angle gearbox.
  • 05
    Low-Voltage Behavior in Short Harness Systems
    We align your 3V–12V supply and drive method so the motor starts consistently in compact wiring layouts and avoids unstable low-voltage startup.
  • Output Direction and Linkage Routing Review
  • Ratio Selection Under a Fixed-Length Constraint
  • Stop-Impact Margin for Corner Drives
  • Mounting Face Alignment for Right-Angle Loads
  • Low-Voltage Behavior in Short Harness Systems

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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.

When should I choose a 90-degree shaft gearbox instead of a straight gearbox?
Choose it when your enclosure is shallow or your mechanism must route motion around a corner without adding extra transmission parts.
Does changing the reduction ratio change the gearbox length?
No. The gearbox length is fixed at 10mm across all listed ratios, which helps keep your packaging constant.
How do I pick the ratio for my target motion?
Start from the rated speed row to hit your target RPM, then confirm rated torque meets your load requirement.
Is this suitable for mechanisms that hit hard end-stops?
It can be, but you should check your peak load against the maximum momentary tolerance torque to avoid shock damage.
What information helps you confirm the right configuration?
Share your available space, required output direction, target RPM, and whether the mechanism can jam or hit stops.
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