Contact Us
Motors
Accessory
Home Products Coreless DC Motors

12mm Diameter Micro Brushed Coreless Motor With Planetary Gearbox

This 12mm micro brushed coreless planetary gear motor is designed for 3–12V systems where you select output through four distinct speed–torque options, while keeping the same Φ12 gearbox envelope and a fixed 12V test baseline.

Get a Quote
  • 12mm Diameter Micro Brushed Coreless Motor With Planetary Gearbox Featured Image
Specs

Key Features

This model is a Φ12 micro brushed coreless planetary gear motor platform defined by a constant mechanical envelope and four electrical/output variants (BLC1221-01 to -04), making selection straightforward when you need different torque tiers without changing installation space.

  • 3V–12V applied range supports compact low-voltage architectures while the table anchors performance at 12V
  • Planetary gearbox keeps the same Φ12×L14.3 gearbox size while output tiers change by configuration
  • Four variants create a clear speed–torque staircase (from 1280 r/min class down to 10 r/min class) for direct output matching
  • No-load current stays listed as 20 mA across variants, helping baseline loss planning stay consistent
  • Rated current stays listed as 120 mA across variants, making driver sizing more stable while torque level changes
technical Specs

Motors Specifications

Motor Model Rated voltage No-load speed No-load current Rated speed Rated torque Rated current Stall torque
　 VDC r/min mA r/min g. cm mA g. cm
BLC1221-01 12 2000 20 1280 3.7 120 80
BLC1221-02 12 400 20 260 150 120 360
BLC1221-03 12 80 20 52 700 120 1500
BLC1221-04 12 16 20 10 3000 120 7500

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

Why Choose us

SLW Motor Highlights

  • Four Output Tiers in the Same Φ12 Gearbox Envelope

    The BLC1221-01 to -04 options let you move from high-speed/low-torque to ultra-low-speed/high-torque while staying inside the same Φ12×L14.3 gearbox size.

  • Speed–Torque Staircase That Matches Use Modes

    The rated-speed steps (1280 → 260 → 52 → 10 r/min) support different behaviors—fast actuation, controlled motion, slow positioning, and holding-style output.

  • Current Planning Stays Stable Across Variants

    No-load current (20 mA) and rated current (120 mA) stay consistent in the table, so driver sizing stays stable while you pick torque tier by variant.

  • Stall Torque Grows Aggressively at the Low-Speed End

    Stall torque increases from 80 g.cm up to 7500 g.cm, which helps when the mechanism must resist back-driving or survive brief jams, but it also raises mechanical risk if hard stops exist.

Custom

Beyond the Standard: Performance Customized

  • 01
    Output Tier Lock-In by Motion Mode
    We shortlist BLC1221-01/02/03/04 by how the mechanism behaves—fast actuation, controlled travel, slow positioning, or holding—so you select by motion intent, not by guessing torque.
  • 02
    Back-Drive Risk Planning at High Stall Torque Levels
    When you choose the high-torque variants (especially -03/-04), we verify whether the mechanism can tolerate high reaction torque at end-stops and whether back-driving must be prevented.
  • 03
    Micro-Planetary Envelope Control (Φ12×L14.3)
    We lock the gearbox envelope first, then only vary the internal output tier so the mechanical installation stays unchanged across product variants.
  • 04
    Current Budget Under Jam or Hard-Stop Events
    Even if rated current is fixed in the table, we define how you handle jam events so the system does not sit in a stalled condition that overheats the motor or damages the gear train.
  • 05
    Variant Strategy for Multi-SKU Lines Using One Mount
    If you plan multiple SKUs, we map your product line to the four tiers so you reuse the same mount and housing while differentiating performance mainly by output tier.
  • Output Tier Lock-In by Motion Mode
  • Back-Drive Risk Planning at High Stall Torque Levels
  • Micro-Planetary Envelope Control (Φ12×L14.3)
  • Current Budget Under Jam or Hard-Stop Events
  • Variant Strategy for Multi-SKU Lines Using One Mount

Custom Now

Related

Explore Our Motor

View All Products

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 between BLC1221-01 to -04 quickly?
Start with rated speed to match your target output behavior, then confirm rated torque meets your load, and finally check stall torque against your end-stop and jam risk.
Why do all variants show the same rated current?
The table keeps electrical planning consistent so you choose output primarily by speed and torque tier while staying within a stable current budget.
Which variant is best for slow positioning or holding behavior?
The lowest rated-speed options provide the strongest torque tiers and are typically used when the mechanism prioritizes controlled motion and resistance to back-driving.
What should I share so you can shortlist the best option?
Share your target output speed, load torque estimate, duty cycle, available space, and whether your mechanism hits hard stops or sees frequent jams.
Is it suitable for repeat production across variants?
Yes. You can standardize the Φ12 mechanical platform and expand variants by selecting one of the four output tiers.
Contact Us

Tell us about your project or application, and our team will get back to you with technical support, product recommendations, or a customized motor solution.

    Get Started

    Accelerate Your Project with Precision Motors