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12mm Brushed Coreless Parallel Shaft Gear Motor

This 12mm parallel shaft gear motor pairs a coreless-rotor brushed DC motor with an inline gearbox, so the output shaft sits on the same axis as the motor instead of turning power through a right angle.The coreless winding cuts rotor mass compared with an iron-core motor of the same size, which shows up as quicker start/stop response and smoother low-speed running — useful wherever a compact assembly needs repeated direction changes without electrical noise spikes.

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12mm brushed coreless motor with parallel output shaft gearbox
technical Specs

Motors Specifications

Reduction ratio No-Load Rated Load Stall
Rated Voltage (V) Speed (RPM±10%) Current (A) Speed (RPM±10%) Current (A) Torque (Kg.cm) Power (W) Torque (Kg.cm) Current (A)
18 12 1055 21 9000 65 16 0.80 110 340
42 12 452 21 385 65 38 0.80 257 340
63 12 301 21 257 65 57 0.80 385 340
80 12 237 21 202 65 72 0.80 490 340
102 12 186 21 158 65 92 0.80 624 340
105 12 180 21 154 65 95 0.80 642 340
115 12 165 21 140 65 104 0.80 703 340
121 12 157 21 103 65 109 0.80 740 340
127 12 149 21 108 65 114 0.80 777 340
157 12 121 21 103 65 141 0.80 960 340
244 12 77 21 66 65 220 0.80 1493 340
298 12 63 21 54 65 268 0.80 1823 340
302 12 62 21 53 65 272 0.80 1848 340
311 12 61 21 52 65 280 0.80 1903 340
345 12 55 21 46 65 310 0.80 2111 340
604 12 31 21 26 65 543 0.80 3696 340
898 12 21 21 18 65 808 0.80 5459 340
992 12 19 21 16 65 992 0.80 6071 340
1032 12 18 21 15 65 928 0.80 6315 340
1576 12 12 21 10 65 1418 0.80 9645 340

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

Advantages

Why a Coreless Rotor for Parallel-Shaft Drive

  • Lower Rotating Mass

    A coreless rotor has no iron core to magnetize, so it carries far less rotating mass than a conventional wound-iron armature of the same diameter.

  • Faster Acceleration

    Lower rotor inertia lets the motor accelerate and decelerate faster for a given drive signal, and it settles into steady speed with less cogging.

  • Smoother Through the Gear Train

    In a parallel shaft gear motor, that smoothness carries straight through the inline gear train instead of being masked by a direction change.

  • Built for Start-Stop Duty

    A coreless rotor has no iron core, so it carries far less rotating mass and accelerates faster with less cogging. That smoothness carries straight through the inline gear train.

Inline

Parallel (Inline) Gearbox Configuration

"Parallel shaft" means the reduction stage keeps the output shaft on the same centerline as the motor shaft, so power goes straight through rather than turning 90°.

  • Same Centerline: Output shaft stays in line with the motor shaft
  • Straight-Through Power: No 90° turn in the reduction stage
  • Predictable Length: Overall assembly length stays easy to plan
  • Simple Coupling: No offset to account for downstream
  • Redirected Output: An 18mm Worm Gearbox & Reducer or 10mm Spur Gearbox & Reducer
Options

Customization Options

Beyond ratio selection, this parallel shaft gear motor can be adjusted around output shaft, housing and gear material, value-added integration, and voltage matching.

  • Output Shaft

    Length, diameter, and end style such as flat, hex, or D-cut are matched to a gear, pulley, or direct coupling.

  • Housing & Gear Material

    Brass, stainless steel, engineering-grade plastic, or powder-metallurgy alloy, matched to load and operating environment.

  • Value-Added Integration

    Encoder feedback, PCB soldering, or wire harness assembly can be built onto the base unit.

  • Voltage Matching

    Configured within the 3V–12V system range to fit existing low-voltage electronics.

Two related options fit adjacent needs: the 12mm Coreless Motor with Parallel Shaft Gearbox for a lighter, smaller-envelope coreless unit, and the 12mm Micro Brushed Motor M4 Screw Shaft Gearbox for a threaded screw interface instead of a rotary shaft. For open-loop step positioning rather than continuous DC drive, the 8mm 08 Stepper Motor with Parallel-Shaft Gearbox keeps the same inline geometry with indexed motion instead.

Solutions

Application Duty Cycles

Three examples show how the ratio table maps to real duty cycles, from slow dosing to rapid open and close cycles.

  • Medical Infusion Dosing

    A syringe-pump module runs the 105:1 ratio at 12V, giving the slow, steady rotation dosing needs while keeping fast response between dispensing cycles.

    • Ratio: 105:1 at 12V for steady dosing
    • Response: Fast between dispensing cycles
    • Duty: Slow, steady rotation

  • Robotic Gripper Actuation

    A pick-and-place gripper runs the 18:1 ratio at 12V, favoring quick acceleration over top speed for rapid open and close cycles.

    • Ratio: 18:1 at 12V for rapid cycles
    • Priority: Quick acceleration over top speed
    • Motion: Fast open and close cycles

  • Precision Positioning Stages

    An automation or optical test fixture runs the 604:1 ratio at 12V for fine, low-speed movement without overshoot.

    • Ratio: 604:1 at 12V for fine movement
    • Motion: Low-speed without overshoot
    • Use: Automation or optical test fixtures
Quality

Manufacturing & Quality

SLW Motor runs a 2,400 m² manufacturing facility in Shenzhen with 56+ staff and 15+ years of motor and gearbox R&D experience, including projects for Japanese manufacturing clients.

  • Direct-manufacturer customization: sample runs through bulk orders.
  • OEM/ODM engineering support: tailored to your application.
  • Prompt inquiry replies: fast response instead of a fixed frame-size catalog.
  • Competitive edge: this factory competes on customization, not frame-size breadth.
  • Quality assurance: ISO 9001:2015 certified and RoHS compliant.
Variants

Compare Parallel Shaft Motor Variants

Three motor types share this inline shaft geometry; picking the right one depends on duty cycle and control method:

VariantBest fit
Coreless brushed motorFrequent start/stop, low-inertia response, smooth low-speed running
12mm N20 Brushed Motor with Parallel Shaft GearboxSteady-speed duty where lower cost matters more than acceleration
8mm Stepper Motor with Parallel Output Shaft GearboxOpen-loop indexing and positioning rather than continuous rotation

Before choosing a parallel shaft gear motor, weigh duty cycle against control method: coreless brushed suits frequent starts; N20 brushed favors steady speed.

Get a Quote

Custom Request

For ratio, shaft, material, or encoder changes on this 12mm coreless parallel shaft gear motor, send your target speed, torque, and voltage to SLW Motor's engineering team.

Sample customization and stable bulk delivery run through the same OEM/ODM process. Get a Quote for quotation feedback on your configuration.

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FAQ

FAQ

A parallel shaft gearbox keeps the output shaft on the same centerline as the motor shaft, so power transmits straight through.

What is a parallel shaft gearbox?
It's a gear reduction stage where the output shaft stays on the same centerline as the motor shaft, so power transmits straight through rather than turning 90°, keeping alignment simple and the cross-section compact.
What duty cycle is this motor best suited for?
It suits intermittent start/stop work and low-speed positioning rather than continuous full-torque running, since the coreless winding has less thermal mass. For continuous duty, the iron-core parallel shaft variant handles heat better at lower cost. Request the full datasheet through Get a Quote.
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Tell us your project or application requirements, and our team will get back to you with technical support, product recommendations, or a customized motor solution.

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