CHIHAI MOTOR CHP-6GP-L610 Coreless Planetary Gear Motor, 6 mm, 1.5V / 3V
CHIHAI MOTOR CHP-6GP-L610 Coreless Planetary Gear Motor, 6 mm, 1.5V / 3V
CHIHAI MOTOR
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Overview
CHIHAI CHP-6GP-L610 is a 6 mm diameter coreless DC motor with a plastic planetary gearbox, built for mechanisms where even a few grams of motor mass matter: micro camera gimbals, instrument drives, miniature appliances and small robotics. The rotor has no iron core, so it spins up and stops quickly and does not cog at low speed; the motor uses NdFeB magnets.
Four ratios from 1:5 to 1:699 are available on both the 1.5V and 3V windings, giving no-load speeds from 6400 rpm down to 23 rpm in the same Ø6 mm body.
Features
- Coreless rotor. No iron core in the winding, which cuts inertia and cogging, so the motor starts, stops and changes speed quickly.
- Plastic planetary gearbox. High transmission efficiency and low running noise, with the load shared across several planet gears.
- NdFeB magnets. A compact neodymium magnet system.
- Ø2 mm D-cut shaft. 3.6 mm long with a 1.5 mm flat, so small pinions and couplings grip without slipping.
- Ø6 mm body. Fits inside pencil-thin mechanisms; the gearbox adds 5.8 to 11.75 mm depending on stage count.
- Reversible. Swap the red and black leads to reverse rotation.
Configuration Guide
Voltage
Two windings are sold. The 3V version runs at roughly twice the speed of the 1.5V version at every ratio (6400 rpm against 3200 rpm at 1:5). Pick the winding that matches your supply rather than the speed: running the 1.5V winding at 3V over-speeds and heats it, and the 3V winding at 1.5V will not reach its rated torque.
Gear ratio and stage count
The ratio also sets the gearbox length, because each extra stage adds length: 1:5 is a single stage at 5.8 mm, 1:26 is two stages at 7.05 mm, 1:136 is three at 9.4 mm, and 1:699 is four at 11.75 mm. Check the space you have before choosing the slowest ratio.
Each option below states voltage, ratio and no-load speed, so the variant name alone tells you the speed you are buying.
Specifications
| Model | CHP-6GP-L610 |
|---|---|
| Brand | CHIHAI MOTOR |
| Motor type | Coreless (ironless) DC, brushed, plastic planetary gearbox |
| Gearbox diameter | Ø6 mm (±0.1) |
| Motor body length | 9.3 mm |
| Gearbox length L | 5.8 / 7.05 / 9.4 / 11.75 mm for 1 / 2 / 3 / 4 stages |
| Output shaft | Ø2 mm, 3.6 mm long, D-flat 1.5 mm, D-flat length 2.5 mm |
| Supply voltage | DC 1.5–3.0V, fixed by the variant |
| Gear ratios | 1:5, 1:26, 1:136, 1:699 |
| Magnet | NdFeB (neodymium) |
| Winding | Pure copper, coreless rotor |
| Rotation | Reversible by swapping supply polarity |
| Lead length | approx. 50 mm (±2), red + and black − |
| Weight | approx. 1.5 g |
Performance by Winding
Rated and stall figures describe different conditions; stall values are not continuous load ratings. A continuous-duty operating cycle is not specified. Torque is published in gf·cm.
3V winding
Max power 0.5 W · 1 to 4 stage gearbox
| Parameter | 1:5 | 1:26 | 1:136 | 1:699 |
|---|---|---|---|---|
| No-load current | ≤60 mA | ≤60 mA | ≤60 mA | ≤60 mA |
| No-load speed | 6400 rpm | 1200 rpm | 240 rpm | 47 rpm |
| Rated torque | 5.0 gf·cm | 28.0 gf·cm | 140.0 gf·cm | 220.0 gf·cm |
| Rated speed | 3800 rpm | 720 rpm | 145 rpm | 28 rpm |
| Rated current | ≤0.15 A | ≤0.15 A | ≤0.15 A | ≤0.15 A |
| Stall torque | ≥14.0 gf·cm | ≥70 gf·cm | ≥300 gf·cm | ≥300 gf·cm |
| Gear stages | 1 stage | 2 stages | 3 stages | 4 stages |
| Gearbox length L | 5.8 mm | 7.05 mm | 9.4 mm | 11.75 mm |
1.5V winding
Max power 0.2 W · 1 to 4 stage gearbox
| Parameter | 1:5 | 1:26 | 1:136 | 1:699 |
|---|---|---|---|---|
| No-load current | ≤35 mA | ≤35 mA | ≤35 mA | ≤35 mA |
| No-load speed | 3200 rpm | 600 rpm | 120 rpm | 23 rpm |
| Rated torque | 2.5 gf·cm | 14.0 gf·cm | 70.0 gf·cm | 110.0 gf·cm |
| Rated speed | 1900 rpm | 360 rpm | 72 rpm | 14 rpm |
| Rated current | ≤0.07 A | ≤0.07 A | ≤0.07 A | ≤0.07 A |
| Stall torque | ≥7.0 gf·cm | ≥35 gf·cm | ≥150 gf·cm | ≥300 gf·cm |
| Gear stages | 1 stage | 2 stages | 3 stages | 4 stages |
| Gearbox length L | 5.8 mm | 7.05 mm | 9.4 mm | 11.75 mm |
Mechanical Dimensions
The gearbox is Ø6 mm; the motor body is 9.3 mm long; the gearbox adds 5.8 / 7.05 / 9.4 / 11.75 mm for one to four stages. The output shaft is Ø2 mm, 3.6 mm long, with a 1.5 mm D-flat over 2.5 mm. Leads are about 50 mm long, red positive and black negative. Whole unit weighs about 1.5 g.
The drawing in Visual Details carries every dimension needed to design a mount. There are no threaded mounting holes on this body — it is held by a clamp or a press-fit bore, so plan the housing around the Ø6 mm diameter.
Applications
- Micro camera gimbals and pan-tilt heads
- Precision instruments and dial drives
- Miniature smart appliances and dispensers
- Small robotics joints and model mechanisms
What's Included
- 1 × CHP-6GP-L610 coreless planetary gear motor with approx. 50 mm red and black leads
One motor per order, in the voltage and ratio you select. No pinion, coupling, connector or mounting bracket is included.
FAQ
What is the difference between the 1.5V and 3V options?
The gearbox is the same; the winding differs. At any ratio the 3V version turns about twice as fast, for example 6400 rpm against 3200 rpm at 1:5.
Why do the slower ratios have a longer body?
Each reduction stage adds a gear stage to the gearbox. 1:5 uses one stage and adds 5.8 mm; 1:699 uses four stages and adds 11.75 mm.
Is this really coreless?
Yes. The rotor winding has no iron core, which is why the motor accelerates quickly and runs without cogging at low speed.
Can I reverse the rotation?
Yes. Swap the red and black leads, or reverse the supply polarity.
Which ratio should I choose?
Start from the output speed your mechanism needs and read it off the variant name; then check the rated torque for that ratio in the tables before committing.
Visual Details
