• Steel-frame N20VA gear motor
  • Steel-frame gear motor structure
  • Copper rotor windings
  • D-shaped output shaft
  • Angled motor view
  • Motor side view
  • Motor detail view
1 7

CHIHAI CHF-GM12-N20VA Steel-Frame DC Gear Motor, 3V/6V/12V

CHIHAI CHF-GM12-N20VA Steel-Frame DC Gear Motor, 3V/6V/12V

CHIHAI MOTOR

$18.08 USD
$18.08 USD
FörsÀljning SlutsÄld
Skatter ingÄr. Frakt berÀknas vid utcheckningen.
Package
Reduction Ratio
Voltage and Winding
  • PayPal
  • Visa
  • Mastercard
  • American Express
  • JCB
  • Discover
  • Diners Club
  • Google Pay
  • Apple Pay
Se alla detaljer

Overview

The CHIHAI MOTOR CHF-GM12-N20VA DC gear motor uses a compact steel-plate gear frame, metal gears and a D-shaped output shaft. Choose the package, reduction ratio and exact voltage/winding version independently. The available options contain only real supplied configurations.

Features

  • Steel frame supports the reduction gear axles for compact mechanisms.
  • Copper-wound rotor and metal gear train.
  • 3 mm D shaft for couplings and pulleys.
  • Motor-only, plastic mounting bracket and mini PWM speed-controller packages.
  • K100 carbon-brush versions offer distinct speed/load points and can be noisier than the other windings.

Specifications

Model CHIHAI MOTOR CHF-GM12-N20VA steel-plate-frame permanent-magnet brushed DC gear motor
Selection 3V, 6V or 12V with exact winding designator; 45, 26, 35, 05 and K100 are motor versions, not voltages
Output shaft 3 mm diameter D shaft, 2.5 mm flat; standard drawing projection 10 mm
100:1 selection Special source designation Shaft 10.4 D6.5 retained; check selected shaft fit rather than assuming the standard drawing
Mechanical drawing Gear section 9 mm, motor section 16 mm, shaft shoulder 0.7 mm, rear reference 1.0 mm; motor body Ø12.1 mm MAX
Mounting Two M1.6 holes; front plate 12 mm, 9 mm hole-reference spacing; front boss Ø4 mm, lower-view Ø5.0 / 7.7 mm references
Mass Approximately 10 g motor net reference; shipping weights are separate estimates
Construction Steel-plate gear frame, metal gears and copper rotor windings
Controller option DC 2.2–12.0V supply, 1.8–12V adjustable reference; current must remain below 2A
Controller features RV097NS switched potentiometer, 7 mm panel opening, 2A resettable fuse, LED indicator and screw terminals
Bracket option Plastic N20 bracket with pictured two screws and two nuts; verify mounting dimensions

Voltage and Winding Performance

Each table is a separate motor version. Match voltage, winding and ratio together. Ratios 210:1 and 1000:1 appear as family references only and are not offered as extra SKU combinations. No-load speed, rated speed, rated torque and stall values have different meanings. Values below retain the reference table, including non-monotonic points; they are not interpolated or silently corrected.

3V / 45

Motor input power 0.5 W; no-load current ≀45 mA; rated current ≀0.27 A; stall current ≀0.65 A.

Ratio :1 No-load rpm Rated g.cm Rated mN.m Rated rpm Stall kg.cm
10 1200 40 3.9 780 0.1
20 600 80 7.8 390 0.2
30 400 120 11.8 260 0.3
50 240 200 19.6 150 0.5
100 120 400 39.2 80 1
150 80 600 58.8 52 1.5
210 57 800 78.4 37 2
298 40 1200 117.6 26 3
380 32 1600 156.9 20 3.5
1000 12 1600 156.9 10 3.5

3V / 26

Motor input power 0.2 W; no-load current ≀45 mA; rated current ≀0.14 A; stall current ≀0.35 A.

Ratio :1 No-load rpm Rated g.cm Rated mN.m Rated rpm Stall kg.cm
10 810 25 2.5 460 0.06
20 405 100 9.8 240 0.12
30 270 75 7.4 160 0.15
50 162 120 11.8 90 0.4
100 81 250 24.5 47 0.8
150 54 350 34.3 32 1
210 38 500 49 23 1.3
298 27 1000 98 16 1.8
380 21 1200 117.6 12 2
1000 8 1600 156.9 5 3.5

6V / 26

Motor input power 0.6 W; no-load current ≀45 mA; rated current ≀0.23 A; stall current ≀0.55 A.

Ratio :1 No-load rpm Rated g.cm Rated mN.m Rated rpm Stall kg.cm
10 1650 50 4.9 980 0.11
20 825 100 9.8 490 0.22
30 550 150 14.7 326 0.35
50 330 250 24.5 193 0.6
100 165 500 49 98 1.1
150 110 750 73.5 65 1.8
210 78 1000 98 46 2.5
298 54 1500 147.1 32 2.5
380 43 1900 186.3 25 2.5
1000 16 2500 245.1 10 2.5

6V / 35

Motor input power 0.4 W; no-load current ≀40 mA; rated current ≀0.1 A; stall current ≀0.3 A.

Ratio :1 No-load rpm Rated g.cm Rated mN.m Rated rpm Stall kg.cm
10 1050 20 2 750 0.1
20 525 40 3.9 375 0.16
30 350 60 5.9 250 0.24
50 210 100 9.8 150 0.4
100 105 200 19.6 75 0.8
150 70 300 29.4 50 1.2
210 50 400 39.2 35 1.6
298 35 600 58.8 25 2.3
380 28 750 73.5 20 3
1000 10 2000 196.1 7 3.5

12V / 05

Motor input power 0.6 W; no-load current ≀30 mA; rated current ≀0.07 A; stall current ≀0.3 A.

Ratio :1 No-load rpm Rated g.cm Rated mN.m Rated rpm Stall kg.cm
10 1500 20 2 1200 0.1
20 750 40 3.9 600 0.16
30 500 60 5.9 400 0.24
50 300 100 9.8 240 0.4
100 150 200 19.6 120 0.8
150 100 300 29.4 80 1.2
210 71 400 39.2 57 1.6
298 50 600 58.8 40 2.3
380 39 750 73.5 31 3
1000 15 2000 196.1 12 3.5

12V / 35

Motor input power 1.4 W; no-load current ≀55 mA; rated current ≀0.2 A; stall current ≀0.5 A.

Ratio :1 No-load rpm Rated g.cm Rated mN.m Rated rpm Stall kg.cm
10 2150 50 4.9 1450 0.13
20 1075 100 9.8 720 0.26
30 717 150 14.7 480 0.39
50 430 250 24.5 290 0.7
100 215 500 49 145 1.3
150 143 750 73.5 95 2
210 102 1000 98 70 2.7
298 72 1500 147.1 48 3
380 57 1900 186.3 38 3
1000 21 3000 294.1 14 3.5

3V / K100 Carbon Brush

Motor input power 0.5 W; no-load current ≀150 mA; rated current ≀0.45 A; stall current ≀1 A.

Ratio :1 No-load rpm Rated g.cm Rated mN.m Rated rpm Stall kg.cm
10 1500 40 3.9 780 0.1
20 750 80 7.8 390 0.2
30 400 120 11.8 260 0.3
50 310 200 19.6 150 0.5
100 155 400 39.2 80 1
150 105 600 58.8 52 1.5
210 74 800 78.4 37 2
298 50 1200 117.6 26 3
380 40 1600 156.9 20 3.5
1000 15.5 1600 156.9 10 3.5

6V / K100 Carbon Brush

Motor input power 1.7 W; no-load current ≀200 mA; rated current ≀0.9 A; stall current ≀2 A.

Ratio :1 No-load rpm Rated g.cm Rated mN.m Rated rpm Stall kg.cm
10 3200 80 7.8 1580 0.2
20 1600 160 15.6 780 0.4
30 1050 240 23.6 530 0.6
50 640 400 39.2 310 1
100 320 800 78.4 170 2
150 210 1200 117.6 110 ≄3.0*
210 150 1600 156.9 78 ≄3.0*
298 105 2400 235.3 56 ≄3.0*
380 84 3000 294.1 45 ≄3.0*
1000 32 3000 294.1 25 ≄3.0*

* For the 6V K100 high-ratio columns, the stall-torque reference is ≄3.0 kg.cm, but the gearbox must not be used above 3.0 kg.cm or held stalled. Stall figures are not continuous operating ratings. The K100 carbon-brush end-cap design is intended for brush life and uses a silicon-steel core; no quantified life or temperature guarantee is provided.

Mechanical Fit and Package Accessories

The original engineering drawing below retains its geometry, hole locations and numeric references. Its standard 10 mm shaft view does not replace the special 100:1 selector designation. Check actual shaft projection and flat engagement before selecting a coupling. Steel-frame construction supports the gear axles against movement under load; comparison photos of a copper-frame alternative do not add that alternative to this listing.

The optional plastic bracket references 10 mm opening, 14.5 mm upper feature, 11.3 mm side feature, 12 mm lower feature, 25 mm overall width and 18.5 mm mounting-spacing reference. Use the pictured screws/nuts and verify clearance before installation.

Controller and Connection

The mini controller is a DC PWM speed-control accessory with DC 2.2–12.0V supply and a 1.8–12V adjustable reference. Keep current below 2A and within the selected motor rating; the 2A resettable fuse is protection, not a continuous motor rating. The RV097NS potentiometer includes an on/off switch and uses a 7 mm panel opening. An LED indicates power; screw terminals provide connections. Follow the board markings for supply and motor terminals. Supply DC only, and do not connect mains directly. This package does not promise an electronic reversing switch; reverse a bare motor by reversing its motor supply polarity after stopping.

What's Included

  • Motor Only: one selected steel-frame gear motor.
  • Motor + Mounting Bracket: one selected motor and one pictured plastic bracket.
  • Motor + Mini PWM Controller: one selected motor and one mini PWM controller.
  • Motor + Bracket + Mini PWM Controller: one selected motor, one bracket and one mini controller.

The bracket accessory illustration shows two screws and two nuts. Package images show alternatives, not four motors in one purchase. A power supply, encoder, chassis, coupling and complete machine are not included.

Applications

Small robotic mechanisms, motorized curtains, balancing-vehicle development, smart locks and compact motion projects where the selected speed, load and mechanical fit are suitable.

Installation and Operation

Match the exact voltage/winding to the power supply and controller. Avoid overload, frequent loaded starts, frequent rapid reversals and stalled operation. Do not force the output shaft to turn while unpowered; back-driving can damage the reduction gears. Gear noise and speed vary with winding, ratio and load.

FAQ

Does 45, 26 or 35 mean the supply voltage?

No. These are motor-version designators. Select the explicit 3V, 6V or 12V supply rating.

Are all performance-table ratios available?

No. Only the ratios in the product selector are purchasable.

Is the controller included with every motor?

No. Choose a package that explicitly includes the Mini PWM Controller.

Visual Details

Original N20VA engineering drawing - millimetres
Original N20VA engineering drawing - millimetres
N20VA specifications
N20VA specifications
Mini PWM controller and mounting bracket
Mini PWM controller and mounting bracket
Package, winding and safe operation
Package, winding and safe operation

Relaterade samlingar