CHIHAI CHP-36GP-555 Planetary DC Gear Motor

Overview

The CHIHAI MOTOR CHP-36GP-555 combines a brushed DC motor with an all-metal planetary gearbox and 8 mm D-shaft. Select 12V or 24V,nominal reduction ratio,and an encoder or non-encoder configuration. Bracket packages add the illustrated36GP mounting bracket. This DC gear motor family supports compatible robot drives and automated mechanisms.

Features

Metal planetary gearing and ball-bearing-supported shaft construction.
Optional AB quadrature Hall encoder with 17PPR motor-shaft reference.
Encoder electronics supplied separately at 3.3V or 5V.
Distinct motor-only and mounting-bracket packages.
Reversible brushed DC motor construction.

Specifications

Specification	Value / scope
Family	CHIHAI MOTOR CHP-36GP-555 planetary brushed DC gearmotor
Encoder version reference	CHP-36GP-555ABHL with AB quadrature Hall encoder and protective cap
Non-encoder versions	Separate motor-only or motor-with-bracket selections;no Hall board/cap/encoder lead promised
Selected winding	12V DC or 24V DC
Selected nominal ratios	3.7:1,5.2:1,14:1,19:1,27:1,51:1,71:1,100:1,139:1,264:1
Gear construction	All-metal planetary reduction gears
Shaft/bearing construction	8 mm D-shaft with ball-bearing support
Encoder drawing shaft	20±0.5 mm projection;15 mm flat-length reference;7 mm flat reference;8 mm diameter(+0/−0.03)
Front mounting	Four M3 mounting holes on28 mm pitch-circle reference;maximum screw penetration6 mm
Encoder drawing registers	22 mm front register(+0/−0.05);2 mm shoulder reference
Encoder motor dimensions	36±0.2 mm gearbox diameter;motor envelope37.5 mm maximum;rear section57±0.3 mm;rear cap15.5 mm reference;32 mm cap diameter;34 mm can reference
Overall-length scope	36×114 mm shared encoder assembly reference excluding shaft/terminals;actual length varies with ratio and configuration
Encoder motor weight	Approximately480 g;ratio-dependent. No separate non-encoder weight is specified
Encoder connector	XH2.54-6PIN with corresponding lead assembly
Encoder supply	3.3V DC or 5.0V DC,independent of12V/24V motor power
Encoder output	AB quadrature square waves,17PPR at motor shaft;17×reduction ratio output-shaft pulse reference
Encoder electronics	Onboard pull-ups/signal conditioning;100kHz response reference
Magnetic ring	34 poles,17 pole pairs
Optional bracket	36GP L-bracket,50 mm upright,43 mm base,3 mm thickness;weight not specified
Bracket interfaces	28 mm front-hole spacing;22 mm center aperture(+0.10/+0.05);3.2 mm front holes;four M3 andsix3.1 mm base holes;30/43/13/10/20 mm base references;R20 top radius
Additional shaft/drawing tolerances	7 mm flat(+0/−0.10);gearbox length L±0.5 mm
External flange-coupler drawing reference,not included	8 mm bore;32 mm flange diameter;16 mm hub diameter;24 mm hole-pattern reference;four4 mm holes;13 mm length;3 mm flange thickness;8.3 mm shoulder reference;opposed M4 set screws

Performance References

The tables below are voltage-specific encoder-motor family references. Match the selected winding and ratio. The71:1 selection has no matching column,so no performance,gearbox length or output-PPR value is inferred for it. The515:1 column is a family reference and is not selectable here. Non-encoder packages do not acquire encoder functions from these tables.

24V reference

Maximum power reference 120W;no-load current ≤600mA. Maximum power describes a separate operating point,not continuous output at every ratio.

Table ratio	No-load rpm	Rated torque(kgf·cm)	Rated torque(N·m)	Rated rpm	Rated current(A)	Stall current(A)	Stall torque(kgf·cm)
3.7:1	3200	3	0.3	2400	≤2.7	≤21	≥8.0
5.2:1	2300	5	0.5	1750	≤2.7	≤21	≥10.0
14:1	850	10	1	650	≤2.7	≤21	≥25.0
19:1	630	15	1.5	500	≤2.7	≤21	≥30.0
27:1	440	25	2.5	350	≤2.7	≤21	≥35.0
51:1	230	35	3.5	190	≤2.7	≤21	≥50.0
100:1	120	50	5	90	≤2.7	≤21	≥50.0
139:1	85	50	5	65	≤2.7	≤21	≥50.0
264:1	45	50	5	35	≤2.7	≤21	≥60.0
515:1	23	60	6	18	≤2.7	≤21	≥60.0

12V reference

Maximum power reference 30W;no-load current ≤400mA. Maximum power describes a separate operating point,not continuous output at every ratio.

Table ratio	No-load rpm	Rated torque(kgf·cm)	Rated torque(N·m)	Rated rpm	Rated current(A)	Stall current(A)	Stall torque(kgf·cm)
3.7:1	1600	1.5	0.15	1200	≤2.0	≤10	≥4.0
5.2:1	1150	2.5	0.25	850	≤2.0	≤10	≥7.0
14:1	420	5	0.5	320	≤2.0	≤10	≥15.0
19:1	310	7.5	0.75	250	≤2.0	≤10	≥22.0
27:1	220	12.5	1.25	170	≤2.0	≤10	≥25.0
51:1	115	17	1.7	95	≤2.0	≤10	≥35.0
100:1	60	30	3	45	≤2.0	≤10	≥50.0
139:1	42	40	4	32	≤2.0	≤10	≥50.0
264:1	22	50	5	18	≤2.0	≤10	≥60.0
515:1	11.5	60	6	10	≤2.0	≤10	≥60.0

Gearbox Length and Encoder Pulse References

Table ratio	Gearbox L(mm)	Output-shaft pulses/revolution reference
3.7:1	26.5	62.9
5.2:1	26.5	88.4
14:1	34.5	238
19:1	34.5	323
27:1	34.5	459
51:1	42.5	867
100:1	42.5	1700
139:1	42.5	2363
264:1	50.5	4488
515:1	50.5	8755

Pulse references use17PPR multiplied by the nominal table ratio. Quadrature edge counting depends on the host's counting method and is not the same as this single-channel pulse reference. Stall values are limiting references;avoid stalled or overloaded operation.

Encoder Wiring

The following six-pin mapping applies only to encoder versions. Identify connector orientation against the complete dimensioned drawing and wire colors. Motor power and encoder power use separate pins. Never connect12V or 24V motor power to encoder VCC.

Pin	Signal	Wire color	Function
1	M2	White	Motor supply−
2	VCC	Blue	Encoder supply+3.3V/5V
3	C2	Green	Encoder phase B
4	C1	Yellow	Encoder phase A
5	GND	Black	Encoder supply−
6	M1	Red	Motor supply+

The encoder provides A/B square waves with onboard pull-ups and signal conditioning. Match the host's logic voltage,ground reference and input capability. The simple illustration is presented with the same C2/B and C1/A mapping as the six-pin table.

Mechanical Installation

Check output-shaft fit,front register,28 mm mounting pattern and ratio-dependent gearbox length. Maximum M3 screw penetration is 6 mm. The encoder drawing includes the rear Hall assembly and protective cap;non-encoder versions have a different rear assembly. Do not transfer the encoder assembly's total length to a non-encoder motor.

The bracket drawing shows a 50 mm upright,a 43 mm base and 3 mm thickness,with a 22 mm central aperture and multiple mounting holes. The8 mm bore flange-coupler illustration is an external fit reference only;a flange coupler is not included in the selectable packages. Smaller-bore couplers must not be assumed to fit the 8 mm shaft.

Applications

Compatible self-balancing vehicles,small smart vehicles,robotic mechanisms,grippers and motorized film-cutting mechanisms where the selected speed,torque,supply and mounting fit the application. Encoder feedback is available only on encoder selections.

What's Included

Selected configuration	Contents
Encoder Motor	1 encoder-equipped gearmotor and corresponding six-wire lead assembly
Encoder Motor + Mounting Bracket	1 encoder-equipped gearmotor,corresponding lead assembly and 1 mounting bracket
Non-Encoder Motor	1 non-encoder gearmotor
Non-Encoder Motor + Bracket	1 non-encoder gearmotor and 1 mounting bracket

A motor driver,power supply,host controller and flange coupler are not included. Non-encoder versions do not include the Hall encoder,protective cap or encoder lead assembly.

FAQ

Can the encoder be powered from the 12V or 24V motor supply?

No. Encoder VCC requires 3.3V or 5V. Motor power uses the separate M1/M2 pins.

Is17PPR measured at the gearbox output?

It is the motor-shaft base pulse reference. The output reference is 17 multiplied by the reduction ratio;the host's quadrature counting method is separate.