{"product_id":"chihai-gm37-3429-optical-encoder-dc-gear-motor-797115592254","title":"CHIHAI CHR-GM37-3429 Optical Encoder DC Gear Motor,12 V \/24 V","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe \u003ca class=\"tophitek-context-link\" href=\"https:\/\/rcdrone.top\/collections\/chihai-motor\/\" style=\"font-weight:600;text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:0.15em;\"\u003eCHIHAI MOTOR\u003c\/a\u003e CHR-GM37-3429 \u003ca href=\"https:\/\/rcdrone.top\/collections\/dc-gear-motor\"\u003eDC gear motor\u003c\/a\u003e combines a37 mm metal reduction gearbox with an AB incremental optical encoder. Select the package,12 V or24 V motor winding, and output speed\/ratio independently from the actual available combinations.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAll-metal reduction gears, copper winding and reversible DC operation.\u003c\/li\u003e\n\u003cli\u003e6 mm D-shaped output shaft with21 mm projection and12 mm flat length.\u003c\/li\u003e\n\u003cli\u003eDual-channel optical encoder for speed and position feedback.\u003c\/li\u003e\n\u003cli\u003eFive package levels: motor, bracket, flange coupler,65 mm wheel kit or80 mm wheel kit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat's Included\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eContents\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical encoder motor\u003c\/td\u003e\n\u003ctd\u003e1 geared motor with optical encoder and connection lead\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor and bracket\u003c\/td\u003e\n\u003ctd\u003eMotor assembly plus mounting bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor bracket and flange coupler\u003c\/td\u003e\n\u003ctd\u003eMotor assembly, bracket and flange coupling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e65 mm or80 mm wheel kit\u003c\/td\u003e\n\u003ctd\u003eMotor assembly, bracket, hexagonal coupling, selected-diameter wheel and pictured fitting hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eWheel kits use a hexagonal coupling; the separate flange coupling is not substituted into them. Wheel color and tread are not independent selectable options. One motor is included per package; comparison images do not indicate a multi-motor set. A controller and power supply are not included.\u003c\/p\u003e\u003ch2\u003eMotor Specifications\u003c\/h2\u003e\u003cp\u003e12 V and24 V are separate selected windings. Their nominal no-load speeds are the same at their respective selected voltages; do not power a12 V winding at24 V. The family reference maximum output power is11 W. Gearbox maximum permitted load is30 kgf·cm (approximately3.0 N·m); stall operation is not a continuous rating.\u003c\/p\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSelected ratio \/ exact reference ratio\u003c\/th\u003e\n\u003cth\u003eNo-load rpm,12 or24 V\u003c\/th\u003e\n\u003cth\u003eRated torque kgf·cm\u003c\/th\u003e\n\u003cth\u003eRated rpm\u003c\/th\u003e\n\u003cth\u003eGearbox length mm\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6:1 \/ 6.3:1\u003c\/td\u003e\n\u003ctd\u003e1550\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e950\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10:1 \/ 10:1\u003c\/td\u003e\n\u003ctd\u003e1000\u003c\/td\u003e\n\u003ctd\u003e1.6\u003c\/td\u003e\n\u003ctd\u003e600\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e18:1 \/ 18.8:1\u003c\/td\u003e\n\u003ctd\u003e530\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e320\u003c\/td\u003e\n\u003ctd\u003e21.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30:1 \/ 30:1\u003c\/td\u003e\n\u003ctd\u003e330\u003c\/td\u003e\n\u003ctd\u003e4.8\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e21.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50:1 \/ 50:1\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e120\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e90:1 \/ 90:1\u003c\/td\u003e\n\u003ctd\u003e110\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e65\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e150:1 \/ 150:1\u003c\/td\u003e\n\u003ctd\u003e65\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e26.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e270:1 \/ 270:1\u003c\/td\u003e\n\u003ctd\u003e36\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e27\u003c\/td\u003e\n\u003ctd\u003e26.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e450:1 \/ 450:1\u003c\/td\u003e\n\u003ctd\u003e22\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e29\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical reference\u003c\/th\u003e\n\u003cth\u003e12 V winding\u003c\/th\u003e\n\u003cth\u003e24 V winding\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo-load current\u003c\/td\u003e\n\u003ctd\u003e≤300 mA\u003c\/td\u003e\n\u003ctd\u003e≤150 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated current, ratios6.3\/10\/18.8\/30\/50\/90\/150\/270\/450\u003c\/td\u003e\n\u003ctd\u003e≤2.3\/2.3\/2.3\/2.3\/2.3\/2.3\/2.1\/1.9\/1.7 A\u003c\/td\u003e\n\u003ctd\u003e≤1.8 A for all ratios\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStall current\u003c\/td\u003e\n\u003ctd\u003e≤7.0 A\u003c\/td\u003e\n\u003ctd\u003e≤4.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStall torque, ratios6.3\/10\/18.8\/30\/50\u003c\/td\u003e\n\u003ctd\u003e≥2.5\/4.0\/7.5\/12\/20 kgf·cm\u003c\/td\u003e\n\u003ctd\u003e≥2.5\/4.0\/7.5\/12\/20 kgf·cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigher ratios\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eObserve30 kgf·cm gearbox load limit rather than using a calculated stall figure above it\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eReference mass is approximately200 g for the motor assembly and varies with gearbox ratio. Dimensions and masses are not identical across all packages.\u003c\/p\u003e\u003ch2\u003eOptical Encoder and Wiring\u003c\/h2\u003e\u003cp\u003eUse a separate DC3.3 V or5.0 V encoder supply. The encoder is an AB two-phase incremental optical design with a448 CPR base marking and25–60 kHz response-frequency reference, operating over0–85°C. Output counts per gearbox revolution depend on the selected ratio and decoding convention; calibrate your counting implementation before using position as a measurement.\u003c\/p\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eWire color\u003c\/th\u003e\n\u003cth\u003eSignal\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003ctd\u003eEncoder B output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003ctd\u003eEncoder A output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGreen\u003c\/td\u003e\n\u003ctd\u003eEncoder GND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003ctd\u003eEncoder VCC,3.3\/5.0 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003ctd\u003eMotor positive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003ctd\u003eMotor negative\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eThe encoder connector is PH2.0-6PIN; the connection lead may terminate in Dupont or XH2.54 style connectors. Confirm actual pin labels before connection; wire colors above apply to the illustrated optical assembly. Never connect motor12\/24 V power to encoder VCC, reverse encoder VCC\/GND or exceed5 V. Use a microcontroller with a suitable hardware quadrature encoder input, such as STM32. Direct Arduino\/8051 decoding is not supported by this configuration guidance.\u003c\/p\u003e\u003ch2\u003e6 V Series Reference\u003c\/h2\u003e\u003cp\u003eThe following lower-voltage series table is for reference and does not add a6 V winding to the selectable12\/24 V options. Reference maximum output is2.6 W, no-load current≤200 mA, rated current≤1.4 A and stall current≤3.5 A.\u003c\/p\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eRatio\u003c\/th\u003e\n\u003cth\u003eNo-load rpm at6 V\u003c\/th\u003e\n\u003cth\u003eRated kgf·cm\u003c\/th\u003e\n\u003cth\u003eRated rpm\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6.3:1\u003c\/td\u003e\n\u003ctd\u003e775\u003c\/td\u003e\n\u003ctd\u003e0.5\u003c\/td\u003e\n\u003ctd\u003e470\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10:1\u003c\/td\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003ctd\u003e0.8\u003c\/td\u003e\n\u003ctd\u003e300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e18.8:1\u003c\/td\u003e\n\u003ctd\u003e265\u003c\/td\u003e\n\u003ctd\u003e1.5\u003c\/td\u003e\n\u003ctd\u003e160\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30:1\u003c\/td\u003e\n\u003ctd\u003e165\u003c\/td\u003e\n\u003ctd\u003e2.4\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50:1\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e90:1\u003c\/td\u003e\n\u003ctd\u003e55\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e150:1\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e270:1\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e450:1\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e6.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eAt6 V, stall-torque references for ratios6.3\/10\/18.8\/30\/50\/90 are≥1.2\/2.0\/3.7\/6.0\/10\/18 kgf·cm; for higher ratios observe the30 kgf·cm gearbox limit.\u003c\/p\u003e\u003ch2\u003eApplications and Installation\u003c\/h2\u003e\u003cp\u003eSuitable for appropriately designed self-balancing vehicles, tracking robots, small mobile platforms, smart appliances, robot mechanisms, pan\/tilt mechanisms and electric model assemblies. Match the shaft, mounting pattern, wheel coupling and torque requirement before assembly. Disconnect power before rewiring; avoid continuous stall, overload and unsupported radial loads.\u003c\/p\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003ch3\u003eIs this a Hall encoder motor?\u003c\/h3\u003e\u003cp\u003eThese selectable packages use an AB incremental optical encoder. Use the optical encoder supply and wiring table above.\u003c\/p\u003e\u003ch3\u003eWhy does the ratio list show6:1 and the reference table6.3:1?\u003c\/h3\u003e\u003cp\u003eThe short selection uses nominal ratio labels; the performance table retains the more precise6.3:1 and18.8:1 references for those two entries.\u003c\/p\u003e\u003ch2\u003eVisual Details\u003c\/h2\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-gears.webp?v=1792806218\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"All-metal reduction gears on CHR-GM37-3429\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-gears.webp?v=1792806218\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eAll-metal reduction gears on CHR-GM37-3429\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-rotor.webp?v=1792806221\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"Copper armature winding on CHR-GM37-3429\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-rotor.webp?v=1792806221\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eCopper armature winding on CHR-GM37-3429\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-encoder_df781e3f-e6bc-48a1-ad69-251878d16c20.webp?v=1792806225\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"AB incremental optical encoder on CHR-GM37-3429\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-encoder_df781e3f-e6bc-48a1-ad69-251878d16c20.webp?v=1792806225\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eAB incremental optical encoder on CHR-GM37-3429\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-parts.webp?v=1792806229\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"Optical encoder components - reference view on CHR-GM37-3429\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-parts.webp?v=1792806229\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eOptical encoder components - reference view on CHR-GM37-3429\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-dimensions_890145c2-a3ed-437a-ad94-0e0ba38c4b07.webp?v=1792806233\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"CHR-GM37-3429 original mechanical drawing:6 mm D shaft,21 mm projection,12 mm flat; gearbox length varies\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-dimensions_890145c2-a3ed-437a-ad94-0e0ba38c4b07.webp?v=1792806233\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eCHR-GM37-3429 original mechanical drawing:6 mm D shaft,21 mm projection,12 mm flat; gearbox length varies\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-bracket-dimensions.webp?v=1792806236\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"GM37 bracket engineering dimensions and motor mounting reference\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-gm37-3429-bracket-dimensions.webp?v=1792806236\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eGM37 bracket engineering dimensions and motor mounting reference\u003c\/figcaption\u003e\u003c\/figure\u003e","brand":"CHIHAI MOTOR","offers":[{"title":"Optical encoder motor \/ 12V \/ 1550 rpm \/ 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