CHIHAI CHR-GM16-050S DC Gear Motor, 3V-24V Winding and Bracket Options
CHIHAI CHR-GM16-050S DC Gear Motor, 3V-24V Winding and Bracket Options
CHIHAI MOTOR
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Overview
The CHIHAI MOTOR CHR-GM16-050S is a miniature DC gear motor with metal reduction gearing and a D-shaped output shaft. Choose the motor or motor-and-bracket package, gear ratio and voltage/winding combination for compact mechanisms requiring reduced speed and increased shaft torque.
Features
- Metal reduction gears and copper-wound motor armature.
- Reversible brushed DC operation; speed depends on voltage and mechanical load.
- Eight voltage/winding choices across 3V, 6V, 12V and24V.
- Motor-only or motor-and-bracket packages.
Specifications
| Item | Specification |
|---|---|
| Model family | CHR-GM16-050S / CHR-GM16-050PA brushed permanent-magnet DC gear motor |
| Mechanism | All-metal gear train, copper-wound armature, reversible rotation |
| Selectable windings | 3V:11/16;6V:11/13/16;12V:11/34;24V:34 |
| Nominal ratios | 10:1, 20:1, 35:1, 63:1, 86:1, 115:1, 150:1 /7D, 150:1 /10D, 250:1, 360:1 |
| Output shaft reference | 3.0 mm D-shaft, 2.50 mm flat dimension;10.0 ±0.3 mm projection in the shown drawing |
| Mechanical drawing | 15.5 mm round motor/gearhead reference;26.9 mm motor can;11.0 mm gear section;1.9 ±0.2 mm rear projection |
| Mounting | 2 xM2.0 x0.4 tapped holes, 9.0 mm marked offset; verify drawing and configuration |
| Other dimensions | 4.0 mm front boss;1.5 mm collar;4.7 mm rear boss;0.3 mm rear feature;12.1 mm rear reference |
| Motor mass | Approximately25 g, ratio/configuration dependent |
| Gearbox load ceiling | Do not exceed3.0 kgf.cm output torque; avoid stalled operation |
Configuration Guide
Select the rated voltage and winding together:the 11, 13, 16 and34 winding versions have different speed/current characteristics. A general6-12V family label does not override the 3V or24V selections. The 150:1 options retain the 7D and10D identifiers as distinct configurations; verify the actual shaft and mounting envelope before machining. The 10 mm shaft drawing is a reference, not a dimensional promise for every suffix.
Performance by Voltage and Winding
Load and no-load speed are different operating conditions. Load torque references are not payload ratings. Units gf.cm and kgf.cm are gram-force-centimetre and kilogram-force-centimetre torque. Every table uses its named winding; do not apply one voltage row to another version. Ratio150:1 is the common performance reference for both150 suffix choices.
3V / Winding11
Unreduced motor reference:4150rpm /11170. No-load current ≤50 mA; load current ≤100 mA. Stall current ≤600 mA.
| Ratio | No-load rpm | Load torque(gf.cm) | Load rpm | Stall torque reference(kgf.cm) |
|---|---|---|---|---|
| 10:1 | 415 | 23 | 365 | ≥0.2 |
| 20:1 | 208 | 46 | 182 | ≥0.4 |
| 35:1 | 119 | 80 | 100 | ≥0.7 |
| 63:1 | 66 | 144 | 57 | ≥1.2 |
| 86:1 | 48 | 197 | 42 | ≥1.7 |
| 115:1 | 36 | 264 | 21 | ≥2.3 |
| 150:1 | 28 | 345 | 24 | Not specified;3.0 kgf.cm ceiling |
| 250:1 | 17 | 575 | 14 | Not specified;3.0 kgf.cm ceiling |
| 360:1 | 12 | 828 | 10 | Not specified;3.0 kgf.cm ceiling |
3V / Winding16
Unreduced motor reference:10000rpm /1672. No-load current ≤90 mA; load current ≤450 mA. A verified stall-current limit is not established for this winding; use appropriate current limiting.
| Ratio | No-load rpm | Load torque(kgf.cm) | Load rpm | Stall torque reference(kgf.cm) |
|---|---|---|---|---|
| 10:1 | 1000 | 0.06 | 600 | 0.2 |
| 20:1 | 500 | 0.11 | 300 | 0.4 |
| 35:1 | 285 | 0.2 | 200 | 0.7 |
| 63:1 | 159 | 0.35 | 110 | 1.2 |
| 86:1 | 115 | 0.5 | 80 | 1.7 |
| 115:1 | 87 | 0.6 | 60 | 2.4 |
| 150:1 | 67 | 0.8 | 45 | Not specified;3.0 kgf.cm ceiling |
| 250:1 | 40 | 1.25 | 27 | Not specified;3.0 kgf.cm ceiling |
| 360:1 | 28 | 1.25 | 21 | Not specified;3.0 kgf.cm ceiling |
6V / Winding11
Unreduced motor reference:8300rpm /11170. No-load current ≤60 mA; load current ≤150 mA. Stall current ≤900 mA.
| Ratio | No-load rpm | Load torque(gf.cm) | Load rpm | Stall torque reference(kgf.cm) |
|---|---|---|---|---|
| 10:1 | 840 | 45 | 725 | ≥0.4 |
| 20:1 | 420 | 90 | 363 | ≥0.8 |
| 35:1 | 240 | 158 | 207 | ≥1.4 |
| 63:1 | 133 | 284 | 115 | Not specified;3.0 kgf.cm ceiling |
| 86:1 | 98 | 387 | 84 | Not specified;3.0 kgf.cm ceiling |
| 115:1 | 73 | 518 | 63 | Not specified;3.0 kgf.cm ceiling |
| 150:1 | 56 | 675 | 48 | Not specified;3.0 kgf.cm ceiling |
| 250:1 | 34 | 1125 | 29 | Not specified;3.0 kgf.cm ceiling |
| 360:1 | 24 | 1620 | 20 | Not specified;3.0 kgf.cm ceiling |
6V / Winding13
Unreduced motor reference:12000rpm /13120. No-load current ≤90 mA; load current ≤300 mA. Stall current ≤1000 mA.
| Ratio | No-load rpm | Load torque(kgf.cm) | Load rpm | Stall torque reference(kgf.cm) |
|---|---|---|---|---|
| 10:1 | 1200 | 0.05 | 730 | ≥0.2 |
| 20:1 | 600 | 0.1 | 360 | ≥0.45 |
| 35:1 | 375 | 0.17 | 210 | ≥0.7 |
| 63:1 | 190 | 0.3 | 115 | ≥1.5 |
| 86:1 | 139 | 0.4 | 85 | ≥2.0 |
| 115:1 | 105 | 0.55 | 60 | ≥2.3 |
| 150:1 | 80 | 0.75 | 48 | Not specified;3.0 kgf.cm ceiling |
| 250:1 | 48 | 1.2 | 29 | Not specified;3.0 kgf.cm ceiling |
| 360:1 | 33 | 1.8 | 20 | Not specified;3.0 kgf.cm ceiling |
6V / Winding16
Unreduced motor reference:20000rpm /1672. No-load current ≤170 mA; load current ≤900 mA. A verified stall-current limit is not established for this winding; use appropriate current limiting.
| Ratio | No-load rpm | Load torque(kgf.cm) | Load rpm | Stall torque reference(kgf.cm) |
|---|---|---|---|---|
| 10:1 | 2000 | 0.11 | 1200 | 0.4 |
| 20:1 | 1000 | 0.22 | 600 | 0.85 |
| 35:1 | 570 | 0.4 | 400 | 1.5 |
| 63:1 | 317 | 0.7 | 220 | 2.5 |
| 86:1 | 230 | 1.0 | 160 | Not specified;3.0 kgf.cm ceiling |
| 115:1 | 173 | 1.2 | 120 | Not specified;3.0 kgf.cm ceiling |
| 150:1 | 133 | 1.6 | 90 | Not specified;3.0 kgf.cm ceiling |
| 250:1 | 80 | 2.5 | 54 | Not specified;3.0 kgf.cm ceiling |
| 360:1 | 55 | 2.5 | 42 | Not specified;3.0 kgf.cm ceiling |
12V / Winding34
Unreduced motor reference:8000rpm /07340. No-load current ≤50 mA; load current ≤180 mA. Stall current ≤360 mA.
| Ratio | No-load rpm | Load torque(gf.cm) | Load rpm | Stall torque reference(kgf.cm) |
|---|---|---|---|---|
| 10:1 | 800 | 60 | 600 | ≥0.25 |
| 20:1 | 400 | 120 | 300 | ≥0.5 |
| 35:1 | 228 | 200 | 170 | ≥0.9 |
| 63:1 | 126 | 380 | 90 | ≥1.5 |
| 86:1 | 93 | 500 | 65 | ≥2.2 |
| 115:1 | 69 | 700 | 50 | Not specified;3.0 kgf.cm ceiling |
| 150:1 | 53 | 900 | 40 | Not specified;3.0 kgf.cm ceiling |
| 250:1 | 32 | 1500 | 24 | Not specified;3.0 kgf.cm ceiling |
| 360:1 | 22 | 2160 | 15 | Not specified;3.0 kgf.cm ceiling |
12V / Winding11
Unreduced motor reference:16800rpm /11170. No-load current ≤90 mA; load current ≤250 mA. Stall current ≤1450 mA.
| Ratio | No-load rpm | Load torque(gf.cm) | Load rpm | Stall torque reference(kgf.cm) |
|---|---|---|---|---|
| 10:1 | 1680 | 90 | 1450 | ≥0.8 |
| 20:1 | 840 | 180 | 725 | ≥1.6 |
| 35:1 | 480 | 315 | 414 | ≥2.8 |
| 63:1 | 266 | 567 | 230 | Not specified;3.0 kgf.cm ceiling |
| 86:1 | 195 | 774 | 168 | Not specified;3.0 kgf.cm ceiling |
| 115:1 | 146 | 1035 | 126 | Not specified;3.0 kgf.cm ceiling |
| 150:1 | 112 | 1350 | 96 | Not specified;3.0 kgf.cm ceiling |
| 250:1 | 67 | 2250 | 58 | Not specified;3.0 kgf.cm ceiling |
| 360:1 | 47 | 3240 | 40 | Not specified;3.0 kgf.cm ceiling |
24V / Winding34
Unreduced motor reference:16000rpm /07340. No-load current ≤75 mA; load current ≤200 mA. Stall current ≤500 mA.
| Ratio | No-load rpm | Load torque(kgf.cm) | Load rpm | Stall torque reference(kgf.cm) |
|---|---|---|---|---|
| 10:1 | 1600 | 0.09 | 1200 | ≥0.4 |
| 20:1 | 800 | 0.18 | 600 | ≥0.8 |
| 35:1 | 456 | 0.32 | 340 | ≥1.3 |
| 63:1 | 252 | 0.55 | 180 | ≥2.5 |
| 86:1 | 185 | 0.75 | 130 | Not specified;3.0 kgf.cm ceiling |
| 115:1 | 138 | 1.0 | 100 | Not specified;3.0 kgf.cm ceiling |
| 150:1 | 106 | 1.35 | 80 | Not specified;3.0 kgf.cm ceiling |
| 250:1 | 64 | 2.0 | 58 | Not specified;3.0 kgf.cm ceiling |
| 360:1 | 44 | 2.0 | 30 | Not specified;3.0 kgf.cm ceiling |
Keep output torque at or below 3.0 kgf.cm. The 12V/winding11, 360:1 load reference is3240 gf.cm(3.24 kgf.cm), above that mechanical ceiling; the 3.0 kgf.cm gearbox limit takes precedence. Do not use the higher reference as a permissible operating load. Blank individual stall values are not a promised3 kgf.cm stall torque. Avoid continuous stall and allow for cooling and duty cycle.
Mechanical Dimensions and Mounting
All dimensions are millimetres. Confirm the chosen ratio/suffix against the shaft projection, mounting holes and rear-terminal clearance. The optional GM13/GM16 bracket drawing shows25 mm width, 19 mm height, 11.5 mm centre-height reference, 1.2 mm thickness, 4 mm centre hole and2.2 mm screw holes. Base-slot details include6.5 mm/2.2 mm references, 3.85 mm/3.4 mm/1.8 mm references, 2.3 mm offset andR1.5 corners.
Speed Control and Wiring
Use the selected motor voltage. Reversing DC polarity reverses rotation; the rear drawing marks the positive terminal with a red mark. A DC speed controller may be used only within its own voltage/current limits and the motor rating. The illustrated optional controller is a family reference, not included in either package:input current below 2A, 2.2-12V supply and1.8-12V adjustable output are its illustration references. It is not appropriate to assume this controller supports the 24V motor option. Never connect a DC motor speed controller directly to 220V AC.
Applications
Use the motor for small feed mechanisms, compact locking/positioning devices and hobby or instrument automation. Choose the winding and ratio against the actual load, speed and duty cycle.
What's Included
One selected GM16-050 geared motor. The Motor + Bracket package adds one mounting bracket and the two photographed screws. A speed controller, power supply, wiring harness and complete application mechanism are not included. Construction images show internal parts for reference, not additional loose components.
Operation
Check the mounting and electrical supply before power-up. Start with a light load and increase gradually. Keep shaft loads within the motor limits, avoid strong impact and do not force the output shaft. Voltage, speed, load and operating time affect heat; use suitable ventilation and current protection.
FAQ
Can every winding use12V?
No. Select and supply the named3V, 6V, 12V or24V winding; their performance tables are different.
Does the bracket package include a speed controller?
No. It includes the motor, bracket and two screws only.
Are7D and10D interchangeable dimensions?
They are separate 150:1 configuration identifiers. Confirm the actual shaft and mounting detail before fitting either one.
Can the 12V/11 winding360:1 reference be used above 3 kgf.cm?
No. The gearbox mechanical limit remains3.0 kgf.cm even where a performance reference is higher.
Visual Details
