{"product_id":"chihai-chs-gm20-20by-geared-stepper-motor","title":"CHIHAI MOTOR CHS-GM20-20BY Geared Stepper Motor, 20mm","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe \u003ca href=\"https:\/\/rcdrone.top\/collections\/chihai-motor\"\u003eCHIHAI MOTOR\u003c\/a\u003e CHS-GM20-20BY is a 20 mm geared stepper with a two-phase four-wire motor and metal reduction gears. Choose one of ten ratio options and a motor-only, bracket or reciprocating-driver package. This compact \u003ca href=\"https:\/\/rcdrone.top\/collections\/electric-motors\"\u003eelectric motor\u003c\/a\u003e provides ratio-dependent output steps, speed and torque for positioning mechanisms.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMetal reduction gears in a compact cylindrical housing.\u003c\/li\u003e\n\u003cli\u003e18° input motor step with finer output increments through the gearbox.\u003c\/li\u003e\n\u003cli\u003e4 mm D-shaped output shaft with a 3.5 mm flat reference.\u003c\/li\u003e\n\u003cli\u003eFour-wire PHR-4 connection and accessible PCB wiring.\u003c\/li\u003e\n\u003cli\u003eOptional lightweight anodized mounting bracket and button-operated reciprocating driver.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand \/ model\u003c\/td\u003e\n\u003ctd\u003eCHIHAI MOTOR \/ CHS-GM20-20BY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor \/ transmission\u003c\/td\u003e\n\u003ctd\u003eTwo-phase four-wire bipolar stepper; metal reduction gears\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply range \/ test reference\u003c\/td\u003e\n\u003ctd\u003e5–12V DC operating reference; electrical tests at 12V DC with L6219 driver reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter \/ motor section\u003c\/td\u003e\n\u003ctd\u003e20 mm \/18.6 mm drawing reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGearbox length L\u003c\/td\u003e\n\u003ctd\u003e16,17.5,19 or20.5 mm, depending on ratio; drawing tolerance ±0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor input step\u003c\/td\u003e\n\u003ctd\u003e18° per step\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase resistance \/ inductance\u003c\/td\u003e\n\u003ctd\u003e20 Ω ±7% \/11 mH per phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase current \/ excitation\u003c\/td\u003e\n\u003ctd\u003e600 mA per phase at 12V reference \/two-phase excitation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput pull-out torque\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;32 gf·cm at 500 pulses\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput holding torque\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;60 gf·cm at 0 pulses\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput response \/ starting frequency\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;1200 pulses\/s response; \u0026gt;900 pulses\/s starting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePractical pulse-rate guide\u003c\/td\u003e\n\u003ctd\u003e300–1000 pulses\/s; start around 300 pulses\/s, stable-speed reference around 700 pulses\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWinding insulation \/ dielectric test\u003c\/td\u003e\n\u003ctd\u003eClass E coils \/100V AC for one second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation resistance\u003c\/td\u003e\n\u003ctd\u003e100 MΩ, tested at 500V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature reference\u003c\/td\u003e\n\u003ctd\u003e0 to+55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor weight\u003c\/td\u003e\n\u003ctd\u003eApproximately47 g; varies with reduction ratio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput shaft diameter \/ D-flat\u003c\/td\u003e\n\u003ctd\u003e4 mm, +0\/−0.03 mm \/3.5 mm, +0\/−0.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShaft projection \/ flat length\u003c\/td\u003e\n\u003ctd\u003e10.5 ±0.5 mm drawing reference (10 mm nominal in product table) \/7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront mounting\u003c\/td\u003e\n\u003ctd\u003eTwo ISO M2.5 ×2 tapped holes;15 mm spacing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther drawing references\u003c\/td\u003e\n\u003ctd\u003e7 mm front register diameter;3 mm front offset;1 mm rear offset;6 mm rear shaft\/bearing reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector \/ wire length\u003c\/td\u003e\n\u003ctd\u003ePHR-4 \/140 ±5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin order \/ coil pairs\u003c\/td\u003e\n\u003ctd\u003ePin1 yellow and pin2 red: phase A; pin3 black and pin4 blue: phase B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGearbox maximum instantaneous load\u003c\/td\u003e\n\u003ctd\u003e6.0 kgf·cm; do not exceed, and do not treat as continuous torque rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eRatio Selection and Performance\u003c\/h2\u003e\u003cp\u003eThree selectors use rounded nominal ratio names: 12 corresponds to 12.5:1, 31 to 31.25:1 and 62 to 62.5:1. The remaining selectable nominal labels are 25,50,78,100,125,195 and 250. The selector includes these nominal-to-precise mappings.\u003c\/p\u003e\u003cp\u003eThe following 12V table uses 700 input pulses\/s. Additional ratios 156, 312.5,390 and 488 are series references and are not current selectable configurations. L is the gearbox-length reference. No-load speed, holding torque and pull-out torque are separate operating conditions.\u003c\/p\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePrecise ratio\u003c\/th\u003e\n\u003cth\u003eSelectable nominal \/ scope\u003c\/th\u003e\n\u003cth\u003eL (mm)\u003c\/th\u003e\n\u003cth\u003eOutput step (°)\u003c\/th\u003e\n\u003cth\u003eNo-load rpm at 700 pulses\/s\u003c\/th\u003e\n\u003cth\u003eHolding torque (kgf·cm)\u003c\/th\u003e\n\u003cth\u003ePull-out torque (kgf·cm)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e12.5:1\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e1.44\u003c\/td\u003e\n\u003ctd\u003e168\u003c\/td\u003e\n\u003ctd\u003e≥0.5\u003c\/td\u003e\n\u003ctd\u003e≥0.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25:1\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e0.72\u003c\/td\u003e\n\u003ctd\u003e84\u003c\/td\u003e\n\u003ctd\u003e≥1.2\u003c\/td\u003e\n\u003ctd\u003e≥0.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e31.25:1\u003c\/td\u003e\n\u003ctd\u003e31\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e0.576\u003c\/td\u003e\n\u003ctd\u003e67\u003c\/td\u003e\n\u003ctd\u003e≥1.5\u003c\/td\u003e\n\u003ctd\u003e≥0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50:1\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e17.5\u003c\/td\u003e\n\u003ctd\u003e0.36\u003c\/td\u003e\n\u003ctd\u003e42\u003c\/td\u003e\n\u003ctd\u003e≥2.5\u003c\/td\u003e\n\u003ctd\u003e≥1.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e62.5:1\u003c\/td\u003e\n\u003ctd\u003e62\u003c\/td\u003e\n\u003ctd\u003e17.5\u003c\/td\u003e\n\u003ctd\u003e0.288\u003c\/td\u003e\n\u003ctd\u003e33\u003c\/td\u003e\n\u003ctd\u003e≥3.0\u003c\/td\u003e\n\u003ctd\u003e≥1.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e78:1\u003c\/td\u003e\n\u003ctd\u003e78\u003c\/td\u003e\n\u003ctd\u003e17.5\u003c\/td\u003e\n\u003ctd\u003e0.23\u003c\/td\u003e\n\u003ctd\u003e27\u003c\/td\u003e\n\u003ctd\u003e≥3.8\u003c\/td\u003e\n\u003ctd\u003e≥1.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100:1\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e0.18\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003ctd\u003e≥5.0\u003c\/td\u003e\n\u003ctd\u003e≥2.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e125:1\u003c\/td\u003e\n\u003ctd\u003e125\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e0.144\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003ctd\u003e≥3.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e156:1\u003c\/td\u003e\n\u003ctd\u003eSeries reference only\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e0.115\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003ctd\u003e≥4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e195:1\u003c\/td\u003e\n\u003ctd\u003e195\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e0.092\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003ctd\u003e≥6.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250:1\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e20.5\u003c\/td\u003e\n\u003ctd\u003e0.072\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e312.5:1\u003c\/td\u003e\n\u003ctd\u003eSeries reference only\u003c\/td\u003e\n\u003ctd\u003e20.5\u003c\/td\u003e\n\u003ctd\u003e0.0576\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e390:1\u003c\/td\u003e\n\u003ctd\u003eSeries reference only\u003c\/td\u003e\n\u003ctd\u003e20.5\u003c\/td\u003e\n\u003ctd\u003e0.0462\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e488:1\u003c\/td\u003e\n\u003ctd\u003eSeries reference only\u003c\/td\u003e\n\u003ctd\u003e20.5\u003c\/td\u003e\n\u003ctd\u003e0.037\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003ctd\u003eMaximum 6.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cp\u003eThe cells marked Maximum give permissible limits, not guaranteed minimum torque. The gearbox's maximum instantaneous load is 6.0 kgf·cm; exceeding it can damage the gearbox and motor. It does not establish a continuous-duty rating.\u003c\/p\u003e\u003cp\u003eOutput speed in rpm = output step angle in degrees ×input pulse rate per second ×60 ÷360. There are 60 seconds per minute and 360 degrees per revolution. Speed depends on pulse rate and load; begin at a suitable starting frequency rather than assuming the highest no-load speed is available under load.\u003c\/p\u003e\u003ch2\u003eWiring and Control\u003c\/h2\u003e\u003cp\u003eUse a compatible two-phase bipolar stepper driver. Connector pin order is 1 yellow,2 red,3 black,4 blue. Yellow\/red form phase A and black\/blue form phase B. Identify each coil pair and confirm direction with the actual driver before integrating the mechanism. The drawing shows the excitation sequence viewed from the flange side.\u003c\/p\u003e\u003cp\u003eThe motor requires a sequenced stepper drive rather than a direct two-wire DC connection. The recommended 300-pulse\/s starting point and roughly 700-pulse\/s stable-speed reference are application guides; the separate input-motor frequency specifications are test references. Actual starting and load capability depend on the driver, ratio, supply and mechanism.\u003c\/p\u003e\u003cp\u003eThe reciprocating-driver packages include the displayed button-operated board. Check its actual power and control terminal markings before connection; the motor's supply range does not establish all controller input limits or external signal compatibility.\u003c\/p\u003e\u003ch2\u003eMechanical Installation\u003c\/h2\u003e\u003cp\u003eSelect the ratio before designing the mounting envelope: gearbox length changes from 16 to 20.5 mm across the reference family. Check the shaft projection, D-flat, tapped mounting holes and wire clearance against the mechanism. Avoid forcing the shaft, stalling or applying an impact load.\u003c\/p\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOptional mounting bracket\u003c\/th\u003e\n\u003cth\u003eSpecification \/ scope\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction \/ mass\u003c\/td\u003e\n\u003ctd\u003eAnodized aluminum alloy;3 mm thick; approximately 6.5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall drawing references\u003c\/td\u003e\n\u003ctd\u003e31 mm high ×23 mm base depth;16 mm front flat width\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor face hole pattern\u003c\/td\u003e\n\u003ctd\u003e17 mm horizontal and 15 mm vertical references;18.5 mm lower offset;7.1 mm center aperture;two 3.1 mm hole references\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase attachment\u003c\/td\u003e\n\u003ctd\u003eTwo M5 threaded holes;23 ×16 mm base reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase hole offsets\u003c\/td\u003e\n\u003ctd\u003e5 mm from first edge,10 mm hole spacing,8 mm to opposite edge;8 mm transverse offset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting example scope\u003c\/td\u003e\n\u003ctd\u003eThe illustrated CHR-GM20\/25-style DC motor is a bracket-fit example; it is not a second included motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eFor compatible small positioning mechanisms, hobby robotics, model equipment and automation assemblies when the required resolution, torque, pulse drive and mechanical dimensions match the selected configuration.\u003c\/p\u003e\u003ch2\u003eWhat's Included\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSelected package\u003c\/th\u003e\n\u003cth\u003eContents\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Only\u003c\/td\u003e\n\u003ctd\u003e1 × selected geared stepper motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor + Mounting Bracket\u003c\/td\u003e\n\u003ctd\u003e1 × motor and 1 × blue mounting bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor + Reciprocating Driver\u003c\/td\u003e\n\u003ctd\u003e1 × motor and 1 × button-operated reciprocating driver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor + Bracket + Reciprocating Driver\u003c\/td\u003e\n\u003ctd\u003e1 × motor,1 × bracket and 1 × reciprocating driver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cp\u003eEach configuration includes one motor at the chosen ratio. A bracket and driver are included only when named in the package. A power supply, host controller and the DC motor shown in the bracket mounting example are not included.\u003c\/p\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003ch3\u003eWhy does the 12 ratio option show 12.5:1?\u003c\/h3\u003e\u003cp\u003e12 is the nominal selector label; its precise performance-table ratio is 12.5:1. The same distinction applies to 31\/31.25 and 62\/62.5.\u003c\/p\u003e\u003ch3\u003eAre all ratios the same length?\u003c\/h3\u003e\u003cp\u003eNo. The gearbox-length reference varies with ratio. Check the L column and complete dimensional drawing before mounting.\u003c\/p\u003e\u003ch3\u003eCan this motor connect directly to a DC supply?\u003c\/h3\u003e\u003cp\u003eIt needs a compatible two-phase bipolar stepper driver to sequence the coils. Choose a driver package if one is required.\u003c\/p\u003e\u003ch3\u003eDoes 6 kgf·cm mean the motor can run continuously at that torque?\u003c\/h3\u003e\u003cp\u003eNo. It is a maximum instantaneous gearbox-load limit. The table also distinguishes minimum test values from maximum permissible limits.\u003c\/p\u003e\u003ch3\u003eDoes the bracket picture include another motor?\u003c\/h3\u003e\u003cp\u003eNo. The DC motor in the bracket drawing is a mounting example; each current package contains one selected geared stepper motor.\u003c\/p\u003e\u003ch2\u003eVisual Details\u003c\/h2\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d5.webp?v=1792613273\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d5.webp?v=1792613273\" alt=\"CHS-GM20-20BY motor dimensions, connector pins, coil pairing and excitation sequence\" loading=\"lazy\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eCHS-GM20-20BY motor dimensions, connector pins, coil pairing and excitation sequence\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d6.webp?v=1792613278\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d6.webp?v=1792613278\" alt=\"CHS-GM20-20BY dimensional, electrical, pulse-rate and weight specifications\" loading=\"lazy\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eCHS-GM20-20BY dimensional, electrical, pulse-rate and weight specifications\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d7.webp?v=1792613283\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d7.webp?v=1792613283\" alt=\"Metal reduction gear construction and opened gearbox reference\" loading=\"lazy\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eMetal reduction gear construction and opened gearbox reference\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d8.webp?v=1792613288\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d8.webp?v=1792613288\" alt=\"Two-phase four-wire stepper motor and PCB wiring detail\" loading=\"lazy\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eTwo-phase four-wire stepper motor and PCB wiring detail\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d9.webp?v=1792613293\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d9.webp?v=1792613293\" alt=\"D-shaped output shaft detail\" loading=\"lazy\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eD-shaped output shaft detail\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d10.webp?v=1792613298\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d10.webp?v=1792613298\" alt=\"CHS-GM20-20BY input motor electrical specifications and test conditions\" loading=\"lazy\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eCHS-GM20-20BY input motor electrical specifications and test conditions\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d11.webp?v=1792613303\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d11.webp?v=1792613303\" alt=\"12V, 700-pulse-per-second ratio performance — selectable and series-reference models identified\" loading=\"lazy\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003e12V, 700-pulse-per-second ratio performance — selectable and series-reference models identified\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d19.webp?v=1792613308\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-d19.webp?v=1792613308\" alt=\"Optional anodized aluminum bracket dimensions; illustrated DC motor is a mounting example\" loading=\"lazy\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eOptional anodized aluminum bracket dimensions; illustrated DC motor is a mounting example\u003c\/figcaption\u003e\u003c\/figure\u003e","brand":"CHIHAI MOTOR","offers":[{"title":"Motor Only \/ 12.5:1 (Nominal 12)","offer_id":68073594650848,"sku":"CHS-GM20-20BY-0001","price":21.02,"currency_code":"USD","in_stock":true},{"title":"Motor Only \/ 25:1","offer_id":68073594683616,"sku":"CHS-GM20-20BY-0002","price":21.02,"currency_code":"USD","in_stock":true},{"title":"Motor Only \/ 31.25:1 (Nominal 31)","offer_id":68073594716384,"sku":"CHS-GM20-20BY-0003","price":21.02,"currency_code":"USD","in_stock":true},{"title":"Motor Only \/ 50:1","offer_id":68073594749152,"sku":"CHS-GM20-20BY-0004","price":21.02,"currency_code":"USD","in_stock":true},{"title":"Motor Only \/ 62.5:1 (Nominal 62)","offer_id":68073594781920,"sku":"CHS-GM20-20BY-0005","price":21.02,"currency_code":"USD","in_stock":true},{"title":"Motor Only \/ 78:1","offer_id":68073594814688,"sku":"CHS-GM20-20BY-0006","price":21.02,"currency_code":"USD","in_stock":true},{"title":"Motor Only \/ 100:1","offer_id":68073594847456,"sku":"CHS-GM20-20BY-0007","price":21.02,"currency_code":"USD","in_stock":true},{"title":"Motor Only \/ 125:1","offer_id":68073594880224,"sku":"CHS-GM20-20BY-0008","price":21.02,"currency_code":"USD","in_stock":true},{"title":"Motor Only \/ 195:1","offer_id":68073594912992,"sku":"CHS-GM20-20BY-0009","price":21.02,"currency_code":"USD","in_stock":true},{"title":"Motor Only \/ 250:1","offer_id":68073594945760,"sku":"CHS-GM20-20BY-0010","price":21.02,"currency_code":"USD","in_stock":true},{"title":"Motor + Mounting Bracket \/ 12.5:1 (Nominal 12)","offer_id":68073594978528,"sku":"CHS-GM20-20BY-0011","price":22.07,"currency_code":"USD","in_stock":true},{"title":"Motor + Mounting Bracket \/ 25:1","offer_id":68073595011296,"sku":"CHS-GM20-20BY-0012","price":22.07,"currency_code":"USD","in_stock":true},{"title":"Motor + Mounting Bracket \/ 31.25:1 (Nominal 31)","offer_id":68073595044064,"sku":"CHS-GM20-20BY-0013","price":22.07,"currency_code":"USD","in_stock":true},{"title":"Motor + Mounting Bracket \/ 50:1","offer_id":68073595076832,"sku":"CHS-GM20-20BY-0014","price":22.07,"currency_code":"USD","in_stock":true},{"title":"Motor + Mounting Bracket \/ 62.5:1 (Nominal 62)","offer_id":68073595109600,"sku":"CHS-GM20-20BY-0015","price":22.07,"currency_code":"USD","in_stock":true},{"title":"Motor + Mounting Bracket \/ 78:1","offer_id":68073595142368,"sku":"CHS-GM20-20BY-0016","price":22.07,"currency_code":"USD","in_stock":true},{"title":"Motor + Mounting Bracket \/ 100:1","offer_id":68073595175136,"sku":"CHS-GM20-20BY-0017","price":22.07,"currency_code":"USD","in_stock":true},{"title":"Motor + Mounting Bracket \/ 125:1","offer_id":68073595207904,"sku":"CHS-GM20-20BY-0018","price":22.07,"currency_code":"USD","in_stock":true},{"title":"Motor + Mounting Bracket \/ 195:1","offer_id":68073595240672,"sku":"CHS-GM20-20BY-0019","price":22.07,"currency_code":"USD","in_stock":true},{"title":"Motor + Mounting Bracket \/ 250:1","offer_id":68073595273440,"sku":"CHS-GM20-20BY-0020","price":22.07,"currency_code":"USD","in_stock":true},{"title":"Motor + Reciprocating Driver \/ 12.5:1 (Nominal 12)","offer_id":68073595306208,"sku":"CHS-GM20-20BY-0021","price":36.86,"currency_code":"USD","in_stock":true},{"title":"Motor + Reciprocating Driver \/ 25:1","offer_id":68073595338976,"sku":"CHS-GM20-20BY-0022","price":36.86,"currency_code":"USD","in_stock":true},{"title":"Motor + Reciprocating Driver \/ 31.25:1 (Nominal 31)","offer_id":68073595371744,"sku":"CHS-GM20-20BY-0023","price":36.86,"currency_code":"USD","in_stock":true},{"title":"Motor + Reciprocating Driver \/ 50:1","offer_id":68073595404512,"sku":"CHS-GM20-20BY-0024","price":36.86,"currency_code":"USD","in_stock":true},{"title":"Motor + Reciprocating Driver \/ 62.5:1 (Nominal 62)","offer_id":68073595437280,"sku":"CHS-GM20-20BY-0025","price":36.86,"currency_code":"USD","in_stock":true},{"title":"Motor + Reciprocating Driver \/ 78:1","offer_id":68073595470048,"sku":"CHS-GM20-20BY-0026","price":36.86,"currency_code":"USD","in_stock":true},{"title":"Motor + Reciprocating Driver \/ 100:1","offer_id":68073595502816,"sku":"CHS-GM20-20BY-0027","price":36.86,"currency_code":"USD","in_stock":true},{"title":"Motor + Reciprocating Driver \/ 125:1","offer_id":68073595535584,"sku":"CHS-GM20-20BY-0028","price":36.86,"currency_code":"USD","in_stock":true},{"title":"Motor + Reciprocating Driver \/ 195:1","offer_id":68073595568352,"sku":"CHS-GM20-20BY-0029","price":36.86,"currency_code":"USD","in_stock":true},{"title":"Motor + Reciprocating Driver \/ 250:1","offer_id":68073595601120,"sku":"CHS-GM20-20BY-0030","price":36.86,"currency_code":"USD","in_stock":true},{"title":"Motor + Bracket + Reciprocating Driver \/ 12.5:1 (Nominal 12)","offer_id":68073595633888,"sku":"CHS-GM20-20BY-0031","price":37.61,"currency_code":"USD","in_stock":true},{"title":"Motor + Bracket + Reciprocating Driver \/ 25:1","offer_id":68073595666656,"sku":"CHS-GM20-20BY-0032","price":37.61,"currency_code":"USD","in_stock":true},{"title":"Motor + Bracket + Reciprocating Driver \/ 31.25:1 (Nominal 31)","offer_id":68073595699424,"sku":"CHS-GM20-20BY-0033","price":37.61,"currency_code":"USD","in_stock":true},{"title":"Motor + Bracket + Reciprocating Driver \/ 50:1","offer_id":68073595732192,"sku":"CHS-GM20-20BY-0034","price":37.61,"currency_code":"USD","in_stock":true},{"title":"Motor + Bracket + Reciprocating Driver \/ 62.5:1 (Nominal 62)","offer_id":68073595764960,"sku":"CHS-GM20-20BY-0035","price":37.61,"currency_code":"USD","in_stock":true},{"title":"Motor + Bracket + Reciprocating Driver \/ 78:1","offer_id":68073595797728,"sku":"CHS-GM20-20BY-0036","price":37.61,"currency_code":"USD","in_stock":true},{"title":"Motor + Bracket + Reciprocating Driver \/ 100:1","offer_id":68073595830496,"sku":"CHS-GM20-20BY-0037","price":37.61,"currency_code":"USD","in_stock":true},{"title":"Motor + Bracket + Reciprocating Driver \/ 125:1","offer_id":68073595863264,"sku":"CHS-GM20-20BY-0038","price":37.61,"currency_code":"USD","in_stock":true},{"title":"Motor + Bracket + Reciprocating Driver \/ 195:1","offer_id":68073595896032,"sku":"CHS-GM20-20BY-0039","price":37.61,"currency_code":"USD","in_stock":true},{"title":"Motor + Bracket + Reciprocating Driver \/ 250:1","offer_id":68073595928800,"sku":"CHS-GM20-20BY-0040","price":37.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/chihai-chs-gm20-20by-geared-stepper-motor-strict-v1.webp?v=1792613239","url":"https:\/\/rcdrone.top\/zh\/products\/chihai-chs-gm20-20by-geared-stepper-motor","provider":"RCDrone","version":"1.0","type":"link"}