{"product_id":"chihai-370-brushed-dc-motor-gold-black-mp9","title":"CHIHAI MOTOR 370 Brushed DC Motor, Gold \/ Black \/ MP9 Options","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 370 \u003ca class=\"tophitek-context-link\" href=\"https:\/\/rcdrone.top\/collections\/brushed-dc-motors\/\" style=\"font-weight:600;text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:0.15em;\"\u003ebrushed DC motor\u003c\/a\u003e range offers gold high-speed and black torque-oriented configurations, with motor-only, bevel-gear, MP9 spur-gear and plug-in lead choices. Select the exact configuration: speeds, winding, gear and connection hardware vary by option.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompact permanent-magnet brushed DC construction with ball bearings and balanced armature.\u003c\/li\u003e\n\u003cli\u003eGold and black winding alternatives for different speed and torque requirements.\u003c\/li\u003e\n\u003cli\u003eGear-equipped and locking plug-in lead versions available as listed.\u003c\/li\u003e\n\u003cli\u003eOriginal motor geometry and configuration-specific shaft details retained for mechanical comparison.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eCHIHAI MOTOR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMotor family\u003c\/th\u003e\n\u003ctd\u003e370 brushed DC; gold CHR-K370WD and black \/ MP9 configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMagnet and bearing construction\u003c\/th\u003e\n\u003ctd\u003eNdFeB permanent magnets; ball bearings; dynamically balanced armature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold reference body\u003c\/th\u003e\n\u003ctd\u003e24.4 mm diameter × approximately 31 mm length (drawing: 30.8 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold reference shaft\u003c\/th\u003e\n\u003ctd\u003e2.0 mm diameter; 1.5 mm D-flat dimension; projection 9.5 ± 0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold reference mounting\u003c\/th\u003e\n\u003ctd\u003e2 × M3 mounting holes; 17.0 mm spacing; drawing also marks 15° and 18.5 mm rear spacing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold reference length\u003c\/th\u003e\n\u003ctd\u003e41.7 mm overall; 6.45 mm front boss diameter; 1.7 mm boss projection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold reference mass\u003c\/th\u003e\n\u003ctd\u003eApproximately 52 g; other configurations and accessories differ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReference supply\u003c\/th\u003e\n\u003ctd\u003e11.1V DC; selected MP9 and wired gold references also list 7.4V operation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold selector speed\u003c\/th\u003e\n\u003ctd\u003e50,000 rpm class; wired gold artwork lists 52,000 rpm at 11.1V and 34,000 rpm at 7.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMP9 Gold speed\u003c\/th\u003e\n\u003ctd\u003e50,000 rpm at 11.1V; 33,000 rpm at 7.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMP9 Black medium-torque speed\u003c\/th\u003e\n\u003ctd\u003e33,000 rpm at 11.1V; 22,000 rpm at 7.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMP9 Black high-torque speed\u003c\/th\u003e\n\u003ctd\u003e28,000 rpm at 11.1V; 18,000 rpm at 7.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBlack bevel-gear option\u003c\/th\u003e\n\u003ctd\u003e26,000 rpm in selector; wired black bevel option lists 28,000 rpm. Keep configurations distinct.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlug-in lead versions\u003c\/th\u003e\n\u003ctd\u003e15 cm custom locking terminal leads; do not pull the latched contacts out forcibly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBevel-gear reference\u003c\/th\u003e\n\u003ctd\u003e9-tooth D-bore metal injection-molded gear where pictured; not interchangeable with MP9 spur-gear versions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMP9 construction\u003c\/th\u003e\n\u003ctd\u003eGold: N35SH sintered NdFeB; medium-torque black: bonded NdFeB; high-torque black: N35SH high-performance NdFeB. Ball bearings, metal brush assembly and balanced armature; check selected shaft\/gear fit.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eGold CHR-K370WD Performance Reference\u003c\/h2\u003e\u003cp\u003eThe following 11.1V test points apply to the gold CHR-K370WD reference, not every black or MP9 winding. The 61,000 rpm no-load test point differs from the 50,000 rpm option designation and 52,000 rpm product reference. Use the selected winding and its operating point for matching; these figures do not establish a continuous-duty rating.\u003c\/p\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTest voltage\u003c\/th\u003e\n\u003ctd\u003e11.1V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNo-load speed \/ current\u003c\/th\u003e\n\u003ctd\u003e61,000 rpm \/ 2.9 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum-efficiency point\u003c\/th\u003e\n\u003ctd\u003e147 W; 52,800 rpm; 270 g·cm torque; 18.7 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum-power point\u003c\/th\u003e\n\u003ctd\u003e317 W; 32,000 rpm; 1,010 g·cm torque; 58.55 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStall torque \/ current\u003c\/th\u003e\n\u003ctd\u003e2,020 g·cm \/ 120 A; do not operate stalled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eConfiguration Guide\u003c\/h2\u003e\u003cp\u003eGold 50000 rpm - Motor Only; Titanium Black 28000 rpm - Motor Only; Gold 50000 rpm + Bevel Gear; Black 26000 rpm + Bevel Gear; Black 28000 rpm + Plug-in Leads; Gold + Plug-in Leads; Black 28000 rpm + Bevel Gear + Leads; Gold + Bevel Gear + Leads; MP9 Gold 50000 rpm + Spur Gear + Leads; MP9 Black 33000 rpm + Spur Gear + Leads; MP9 Black 28000 rpm + Spur Gear + Leads; MP9 Gold 50000 rpm - No Gear; MP9 Black 33000 rpm - No Gear; MP9 Black 28000 rpm - No Gear.\u003c\/p\u003e\u003cp\u003eMP9 spur-gear and standard bevel-gear configurations are different mechanical arrangements. The standard bevel-gear configuration is not an MP9 spur-gear substitute. Check shaft, gear mesh, clearance and electrical requirements before fitting. Gold options without an explicit selector speed are shown with a 52,000 rpm reference in their configuration artwork.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eFor compatible compact hobby mechanisms requiring a 370-format brushed DC motor. Match the selected winding, shaft, gearing and supply to the mechanism; motor size alone does not establish fit or operating suitability.\u003c\/p\u003e\u003ch2\u003eWhat's Included\u003c\/h2\u003e\u003cp\u003eOne selected motor. A bevel gear, MP9 spur gear and\/or lead pair is included only when named in the selected configuration. Motor-only and no-gear versions do not include a gear. Comparison images show alternatives, not a multi-motor package. Power supply, controller and complete mechanism are not included.\u003c\/p\u003e\u003ch2\u003eInstallation and Operation\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUse a DC supply matched to the selected winding. Do not treat a general motor-family voltage range as this motor's rating.\u003c\/li\u003e\n\u003cli\u003eAvoid overload and stall; speed decreases as load rises. Stall figures are transient reference values, not an operating condition.\u003c\/li\u003e\n\u003cli\u003eHigh-speed gold and MP9 versions can run hot; assess current demand and cooling for the actual duty cycle.\u003c\/li\u003e\n\u003cli\u003eLocking plug-in terminal leads resist withdrawal. Do not force them out; perform any required soldering on the free wire ends and avoid overheating the motor terminals.\u003c\/li\u003e\n\u003cli\u003eCheck torque requirements before reducing speed; audible motor noise varies with speed and load.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003ch3\u003eDoes every option include a gear and wires?\u003c\/h3\u003e\u003cp\u003eNo. Only configurations explicitly naming a gear or leads include those items.\u003c\/p\u003e\u003ch3\u003eDo all versions run at 50,000 rpm?\u003c\/h3\u003e\u003cp\u003eNo. Black, gold and MP9 windings have different speed references; select the listed configuration and supply voltage.\u003c\/p\u003e\u003ch3\u003eCan I use the stall current as a normal operating current?\u003c\/h3\u003e\u003cp\u003eNo. Avoid stalled operation and overload. The stall figures are reference limits, not continuous-duty ratings.\u003c\/p\u003e\u003ch3\u003eCan I swap the bevel and MP9 spur gears directly?\u003c\/h3\u003e\u003cp\u003eThey are different configurations. Check the required shaft, gear mesh and mechanical fit before selecting.\u003c\/p\u003e\u003ch2\u003eVisual Details\u003c\/h2\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-370-dimensions.webp?v=1792660796\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"Gold CHR-K370WD - dimensions in mm\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-370-dimensions.webp?v=1792660796\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eGold CHR-K370WD - dimensions in mm\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-370-construction.webp?v=1792660801\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"370 motor construction\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-370-construction.webp?v=1792660801\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003e370 motor construction\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-370-performance.webp?v=1792660808\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"Gold CHR-K370WD - 11.1V test reference\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-370-performance.webp?v=1792660808\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eGold CHR-K370WD - 11.1V test reference\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-370-configuration.webp?v=1792660816\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"Configuration and connection reference\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-370-configuration.webp?v=1792660816\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eConfiguration and connection reference\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cfigure\u003e\u003ca href=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-370-operation.webp?v=1792660822\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"Motor operation\" loading=\"lazy\" src=\"https:\/\/rcdrone.top\/cdn\/shop\/files\/chihai-370-operation.webp?v=1792660822\" style=\"max-width:100%;height:auto\"\u003e\u003c\/a\u003e\u003cfigcaption\u003eMotor operation\u003c\/figcaption\u003e\u003c\/figure\u003e","brand":"CHIHAI MOTOR","offers":[{"title":"Gold 50000 rpm - Motor Only","offer_id":68091239727328,"sku":"CHIHAI-370-6862-01","price":31.92,"currency_code":"USD","in_stock":true},{"title":"Titanium Black 28000 rpm - Motor Only","offer_id":68091239760096,"sku":"CHIHAI-370-6862-02","price":31.92,"currency_code":"USD","in_stock":true},{"title":"Gold 50000 rpm + Bevel Gear","offer_id":68091239792864,"sku":"CHIHAI-370-6862-03","price":35.31,"currency_code":"USD","in_stock":true},{"title":"Black 26000 rpm + Bevel Gear","offer_id":68091239825632,"sku":"CHIHAI-370-6862-04","price":35.31,"currency_code":"USD","in_stock":true},{"title":"Black 28000 rpm + Plug-in Leads","offer_id":68091239858400,"sku":"CHIHAI-370-6862-05","price":32.54,"currency_code":"USD","in_stock":true},{"title":"Gold + Plug-in Leads","offer_id":68091239891168,"sku":"CHIHAI-370-6862-06","price":32.54,"currency_code":"USD","in_stock":true},{"title":"Black 28000 rpm + Bevel Gear + Leads","offer_id":68091239923936,"sku":"CHIHAI-370-6862-07","price":36.23,"currency_code":"USD","in_stock":true},{"title":"Gold + Bevel Gear + Leads","offer_id":68091239956704,"sku":"CHIHAI-370-6862-08","price":36.23,"currency_code":"USD","in_stock":true},{"title":"MP9 Gold 50000 rpm + Spur Gear + Leads","offer_id":68091239989472,"sku":"CHIHAI-370-6862-09","price":36.85,"currency_code":"USD","in_stock":true},{"title":"MP9 Black 33000 rpm + Spur Gear + Leads","offer_id":68091240022240,"sku":"CHIHAI-370-6862-10","price":25.15,"currency_code":"USD","in_stock":true},{"title":"MP9 Black 28000 rpm + Spur Gear + Leads","offer_id":68091240055008,"sku":"CHIHAI-370-6862-11","price":31.92,"currency_code":"USD","in_stock":true},{"title":"MP9 Gold 50000 rpm - No Gear","offer_id":68091240087776,"sku":"CHIHAI-370-6862-12","price":35.31,"currency_code":"USD","in_stock":true},{"title":"MP9 Black 33000 rpm - No Gear","offer_id":68091240120544,"sku":"CHIHAI-370-6862-13","price":23.62,"currency_code":"USD","in_stock":true},{"title":"MP9 Black 28000 rpm - No Gear","offer_id":68091240153312,"sku":"CHIHAI-370-6862-14","price":30.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3210\/3904\/files\/chihai-370-g1.jpg?v=1792660850","url":"https:\/\/rcdrone.top\/pl\/products\/chihai-370-brushed-dc-motor-gold-black-mp9","provider":"RCDrone","version":"1.0","type":"link"}