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Yuejia Lingdong

YJ30

A quadruped robot from China.

Sources retrieved: 25 August 2026 (A)

Status
In production
Applications
InspectionSecurity and surveillanceResearch and developmentDefence and emergency response
Intended use, per the manufacturer
YJ30。 Industry and security inspection Police patrolThe first quote is the YJ30's own product description (same page). Translated: (education/research) points to research and development; (patrol/inspection) to inspection; (emergency response/rescue) to defense and emergency response. The other two quotes are from the page's shared section (the same three cards appear on all four YJ30-series product pages): (police patrol) points to security and surveillance. The third card, (power-line inspection), only repeats inspection.
Indicative price
11,608USD

Next to a 'buy now' button on the manufacturer's own page.

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100150200 cm4060 in46.218.2
Yuejia Lingdong YJ30, walking quadruped robot without wheels, studio photo on a light background
  1. Person
    175 cm68.9 in
  2. 68.2 cm26.9 inHeight
    46.2 cm18.2 in

Manufacturer's own photo.

Drawn at one scale next to a 175 cm person, from the figures the maker states: height 46.2 cm and length 68.2 cm.Drawn at one scale next to a 68.9 in person, from the figures the maker states, converted to inches: height 18.2 in and length 26.9 in.

Specifications

12/33 specifications disclosed 21 not stated

Not statedThe manufacturer states nothing about this field.NoStated: the robot does not have this.A marker with an asterisk (*) also carries a caveat.

Select a source marker for source details and notes.

Physical9/14 disclosed

Weight17.5kg38.6lbOur conversion from 17.5 kg. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.
Length68.2cm26.9inOur conversion from 682 mm. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.
Width35.4cm13.9inOur conversion from 354 mm. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.
Height46.2cm18.2inOur conversion from 462 mm. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.
Degrees of freedomNot stated
Payload, walking10kg22lbOur conversion from 10 kg. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.
Payload, standingNot stated
Max speed10.8km/h6.71mphOur conversion from 3 m/s. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.
Max slope50°
Max obstacle heightNot stated
Max stair height, continuous20cm7.87inOur conversion from 20 cm. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.
IP ratingIP54
Operating temperature, lowNot stated
Operating temperature, highNot stated

Power1/5 disclosed

BatteryNot stated
Runtime90–120minNote: load condition not stated
Hot-swap batteryNot stated
Charge timeNot stated
Docking stationNot stated

Sensing and autonomy1/6 disclosed

LiDARNot stated
CamerasNot stated
Onboard computeNot stated
ROS 2Not stated
SDK languagesNot stated
Autonomy featuresWiFi (yes); 4G/5G (yes); Image transmission (yes); Voice recognition (yes); Autonomous following (yes); Navigation (yes)

Payload and expansion0/3 disclosed

Mounting interfaceNot stated
Power outNot stated
Data portsNot stated

Commercial1/1 disclosed

Indicative price11,608USD78,000CNY

Compliance & certifications0/4 disclosed

CENot stated
FCCNot stated
ULNot stated
CCCNot stated

Against the field

Each strip holds every robot of this type in the guide that states the figure, one bar per group of values. Further right means a larger figure, not a better robot.

Height

46.2cm18.2inOur conversion from 462 mm. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

89 quadrupeds state a height

YJ30

65 state a higher figure, 19 a lower one.

Weight

17.5kg38.6lbOur conversion from 17.5 kg. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

124 quadrupeds state a weight

YJ30

85 state a higher figure, 35 a lower one. Log scale: each step along the axis multiplies the value.

Runtime

90–120minNote: load condition not stated

104 quadrupeds state a runtime

YJ30

YJ30 states a range, not one figure, so it is shown as a band and not ranked against the others.

Indicative price

11,608USD

16 quadrupeds state a public price

YJ30

7 state a higher figure, 7 a lower one. Log scale: each step along the axis multiplies the value.

Max speed

10.8km/h6.71mphOur conversion from 3 m/s. The manufacturer does not state an imperial figure itself, so the conversion has no source of its own.

113 quadrupeds state a top speed

YJ30

44 state a higher figure, 35 a lower one. 10 more state exactly the same figure.

Notes

The manufacturer's own table has a typo in this model's dimensions, missing a letter from the unit, on both the Chinese and English pages. Read as millimetres, not metres.

The manufacturer's table merges “climb angle” and “degrees of freedom” under one heading but gives only one value, with a degree sign — so degrees of freedom is left unstated.

The manufacturer's own table gives two runtime figures in the same cell: 1.5-2 hours standard, and 3 hours with an optional second battery. The figure given is the standard one.

The manufacturer's marketing text hints at a laser/vision sensor system, but the specification table has no LiDAR row.

Sources

One line per source, not per figure: a source has one retrieval date.

  1. Ayuejialingdong.com/index.php/yuejiasizuxilie/56.htmlMain source. Retrieved 25 August 2026
  2. Becb.europa.eu/stats/eurofxref/eurofxref-daily.xmlRate: European Central Bank, Euro foreign exchange reference rates, 2026-08-31.. Retrieved 1 September 2026

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