CHIHAI GM37-545ABHL DC Gear Motor with AB Hall Encoder, 11 Ratios
CHIHAI GM37-545ABHL DC Gear Motor with AB Hall Encoder, 11 Ratios
CHIHAI MOTOR
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Overview
The CHIHAI MOTOR CHR-GM37-545ABHL is a 37 mm DC gear motor with an AB Hall encoder, metal gearing and a rear encoder cover. Choose the actual reduction ratio for your mechanism. The 12 V or 24 V winding must be confirmed before this draft can be made available for fulfillment.
Features
- Eleven reduction ratios from 6.3:1 to 810:1.
- 6 mm D-shaft, metal gearbox and internal motor cooling fan.
- Separate motor supply and low-voltage AB feedback interface.
Specifications
| Model | CHIHAI MOTOR CHR-GM37-545ABHL / JGB37-545 |
| Construction | Brushed DC metal spur-gear reduction with AB quadrature magnetic Hall encoder and protective rear cover |
| Voltage selection | 12 V or 24 V winding must be confirmed before fulfillment; ratio selector does not identify winding voltage |
| Gearbox / motor | 37 mm gearbox diameter; 32 mm motor reference diameter; internal cooling fan |
| Shaft | 6 mm D-shaft, 5.4 mm flat; 21 mm shaft reference, 12 mm flat and 6 mm tip reference |
| Body sections | 50 mm motor section and 15 mm rear-cover reference; gearbox length depends on ratio |
| Mounting | Six M3 x 3 tapped references on 31 mm circle; check drawing and screw penetration |
| Mass | Approximately 290 g, varies with ratio; shipping weight includes packing separately |
| Encoder | AB quadrature magnetic Hall; XH2.54 six-pin connector; 3.3 V or 5 V logic supply |
| Encoder count | Green board 17 PPR or black board 11 PPR base reference; identify actual board before scaling counts |
| Output signal | Square-wave A/B channels with pull-up reference and approximately 100 kHz response reference |
| Inclusions | One motor and pictured matching six-wire lead; mounting bracket, motor driver and power supply excluded |
12 V and 24 V Performance References
These are winding-specific reference tables, not selectable voltage SKUs. Figures vary with operating conditions. Torque is kgf·cm. The 35 kgf·cm entries are gearbox maximum permitted load/test limits, not additional continuous torque ratings. Stall current is not continuous operating current.
12 V
| Ratio | no-load rpm | rated rpm | rated torque / limit | 6.3 | 900 | 760 | .6 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 10 | 570 | 480 | 1 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 18.8 | 300 | 250 | 1.8 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 30 | 190 | 160 | 3 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 50 | 112 | 95 | 4.8 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 90 | 62 | 52 | 8.5 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 150 | 38 | 32 | 14.5 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 270 | 21 | 15 | 35 max |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 450 | 12 | 10 | 35 max |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 650 | 8.8 | 7 | 35 max |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 810 | 7 | 6 | 35 max |
24 V
| Ratio | no-load rpm | rated rpm | rated torque / limit | 6.3 | 1800 | 1500 | 1 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 10 | 1150 | 950 | 1.8 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 18.8 | 610 | 510 | 3.5 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 30 | 380 | 325 | 5.5 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 50 | 225 | 195 | 9 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 90 | 125 | 105 | 16 |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 150 | 75 | 65 | 35 max |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 270 | 42 | 38 | 35 max |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 450 | 25 | 23 | 35 max |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 650 | 17 | 15 | 35 max |
| Ratio | no-load rpm | rated rpm | rated torque / limit | 810 | 14 | 13 | 35 max |
12 V reference: no-load current ≤300 mA, rated current ≤1.5 A, stall current ≤8 A, 19 W table heading. 24 V reference: no-load current ≤400 mA, rated current ≤2.3 A, stall current ≤15 A, 80 W table heading. Size the motor driver and supply for actual startup/stall demand; the high-current reference calls for a supply rated above 10 A where applicable. Do not connect motor voltage to encoder pins.
Encoder Wiring and Counts
The connector exposes motor M1/M2, encoder VCC/GND and A/B signals. Supply the encoder with 3.3 V or 5 V only. Confirm pin order on the actual connector before wiring. Green encoder PCB: 17 base pulses per motor revolution; black PCB: 11 base pulses. Output pulses depend on actual gearbox ratio and counting method. Do not confuse pulses with quadrature edge counts.
Dimensions and Installation
The gearbox length is approximately 19–29 mm across the series. Confirm the selected ratio assembly length because the grouped drawing and individual performance length rows differ. Support the load and avoid excessive radial/axial forces, blocked output and prolonged stall. Disconnect power before reversing direction or servicing. A geared encoder motor requires an external motor driver and controller for closed-loop motion.
Package Contents
One selected-ratio motor with matching lead as pictured. Bracket, power supply and motor controller are not included. Confirm the required winding voltage before fulfillment.
Applications
Robotics, balancing platforms, camera mechanisms and automation prototypes needing geared rotation with pulse feedback.
FAQ
Does the ratio identify 12 V or 24 V?
No. Confirm the required winding separately before fulfillment; the reference tables describe both families.
Is every encoder 17 PPR?
No. Inspect the green or black encoder PCB and verify the actual count before configuring feedback scaling.
Visual Details
