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● Four-wheel-steer robot chassis

LUCHS A

BUILT FOR ROBOTS.
STEERS EVERY WHEEL.

A compact, open mobile base: up to 100 kg on board, four drive configurations

from skid-steer to full four-wheel steering, and the same CAN interface as the

rest of the Luchs family.

Chassis by RJ Tech Limited / Autonomy by TerraAgent Robotics (TAR)

Luchs A

Overview

A compact, open mobile base for robots that need to get around.

Luchs A gives your robot a reliable pair of legs. It carries up to 100 kg, steers all four wheels, and talks to your computer over standard industrial interfaces. Mount your sensors and payload on the top rails, plug into the expansion bay, and start building the application instead of the drivetrain.

Four drive configurations, one platform. Skid-steer, front Ackermann, dual Ackermann or full four-wheel steering. The main body is shared; only the drive module changes. The line-up above shows all four builds.

Open by design. CAN, RS-485 and RS-232 control, a published protocol, and ROS 2 software with an SDK, robot model and simulator in the box.

Power for your payload. 48 V / 10 A and 12 V / 8 A outputs, each with over-current, short-circuit and over-temperature protection.

Safety you don't have to add later. Dual emergency stops, ultrasonic collision stop, power-on self-test and a monitored battery.

Two ways to buy. Take Luchs A as an open chassis for your own robot software, or with the TAR navigation kit and autonomy already on board. One platform, two starting points: you choose how much we deliver.

100 kg

Maximum payload

11.6 km/h

Top speed

0 m

Turning radius: pivots

on the spot

12 h

Runtime,

unloaded

48 V

LiFePO4,

30 Ah

15 °

Maximum gradient

Advanced Features

Engineered for autonomy, indoors and out

Intelligent VCU

Speed, yaw-rate and steering commands over CAN 1 Mbit/s or RS-485 / RS-232, with odometry-grade feedback. ROS 2 and ROS 1 drivers and a C++ SDK.

Independent Suspension

Double wishbone front and rear on the A-DF, A-FA and A-DA builds; independent swing arms on the four-wheel-steer A-4WS.

Distributed Electric Drive

Four 250 W servo hub motors, one per wheel. On the A-4WS, four 140 W steering servos turn every wheel.

Strong Lightweight Structure

Carbon steel and aluminium alloy frame. 65 kg chassis on an 800 × 580 mm footprint, carrying up to 100 kg.

Energy Management System

48 V 30 Ah LiFePO4 battery with BMS: up to 12 h unloaded on one charge. Drive is disabled while the charger is connected.

Payload Rails and Power

Two 2040 aluminium rails, 700 mm long at 200 mm centres, plus 48 V / 10 A and 12 V / 8 A outputs for your sensors and computer.

Technical Specifications

Precision-engineered for demanding applications — Choose your variant

Top

Side

Front

Currently displaying: Luchs A

Parameters

Luchs A

Luchs B

Luchs C (custom)

External Dimensions

800×580×372 mm (A-4WS)

1990×1150×800 mm

Customizable

Weight

65 kg

237 kg

Customizable

Working Payload

—

125 kg

Customizable

Max. Payload

100 kg

250 kg

Customizable

Max. Climb Grade

15°

30°

30°

Ground Clearance

136 mm (A-4WS) / 77 mm

300 mm

Customizable

Off-road Tire Size

206 mm wheels

Customizable

Customizable

Driving Mode

Skid-steer, Ackermann, dual Ackermann or four-wheel steer

4WD with All-Wheel Steering (Front & Rear)

4WD with All-Wheel Steering

Max. Speed

11.6 km/h

40 km/h

55 km/h

Peak Torque

4 × 250 W hub motors

130 Nm×4 / 330 Nm×4

260 Nm×4 / 330 Nm×4

Battery

LiFePO₄, 48 V 30 Ah

LiFePO₄, 72V60Ah / 73V127.4Ah

LiFePO₄, 72V60Ah / 73V127.4Ah / 96V130Ah

E-Range

Up to 12 h (no load)

≥60 km (up to 300 km)

≥60 km (up to 300 km)

With Range Extender

IP Rating

IP33 (IP54 build available)

IP67

IP67

Control Interface

CAN 1 Mbit/s · RS-485 / RS-232, ROS 2 · ROS 1

CAN 2.0A/B, 500 kbps

ROS 2

CAN 2.0A/B, 500 kbps / CAN FD

ROS 2

Configuration Packages

The preconfigured sensor packages offer everything needed to get started quickly. Additional hardware can be added or substituted upon request. Prefer to integrate your own sensors? Luchs A is also supplied as a bare chassis, with the published CAN protocol, SDK and simulator.

Full Autonomous Package

Sensor & Perception

Communication & Control

Design
Size parameters
Included Sensors & Software
Example Applications

•

Edge AI computer, 16 GB, 157 TOPS

•

1 × multi-line 3D main LiDAR on the mast

•

2 × multi-line blind-spot LiDAR

•

2 × single-line LiDAR at bumper height

•

RTK GNSS with two antennas

•

6 × ultrasonic sensors on the chassis

•

Router and switch on board

•

Auto-charging dock, 600 W charger

•

Navigation kit, Pro: 3D LiDAR + RTK GNSS

3D mapping · localisation · goal-point navigation · real-time re-planning · return to dock

•

Indoors: offices, labs, factories and warehouses

•

Car parks and shopping centres

•

Outdoors: pavements, bike lanes and plazas

•

Campuses and industrial parks

•

Your own payload on the chassis rails

Pipeline
Coverage
Sensors
Perception Software

•

Edge AI computer, 16 GB, 157 TOPS

•

1 × multi-line 3D main LiDAR on the mast

•

2 × multi-line blind-spot LiDAR

•

2 × single-line LiDAR at bumper height

•

RTK GNSS with two antennas

•

6 × ultrasonic sensors, collision stop

•

Router and switch on board

•

Standard kit: depth camera instead of blind-spot LiDAR

•

Navigation kit, Pro: 3D LiDAR + RTK GNSS

3D mapping · localisation · goal-point navigation · real-time re-planning · return to dock

•

3D mapping: drive the route once

•

Localisation on the 3D LiDAR map, RTK GNSS outdoors

•

3D obstacle detection around the robot

•

Goal-point navigation, real-time re-planning

•

Return to the charging dock on low battery

Topology
Control & Safety
Interfaces
Safety and Modes

•

CAN 2.0B, 1 Mbit/s, big-endian

•

RS-485 and RS-232 serial

•

Luchs A CAN protocol v1.1, DBC files

•

ROS 2 (Humble, Jazzy), ROS 1 (Noetic)

•

C++ SDK, robot model and simulator

•

Commands: speed, yaw rate, steering

•

Feedback: odometry, status, faults

•

Router and switch for the on-board network

•

Cloud platform, on your own cloud account

Remote view and control, 4 monitoring cameras, phone app

•

Two emergency-stop buttons, left and right

•

Emergency stop from the remote control

•

Ultrasonic collision stop

•

Drive disabled while the charger is connected

•

Modes: remote control, automatic, maintenance

Indoor Navigation

Drive it around once to build a 3D LiDAR map, then pick any point on the map as a goal. It re-plans around new obstacles.

City Streets

Gives way to people, passes bollards, waits for traffic and red lights, and crosses at zebra crossings.

Campuses and Plazas

RTK GNSS keeps the position accurate on open ground. It drives to its goal and parks among the scooters.

Have a unique application? Let's discuss your custom requirements.

Gallery

Luchs A at work: stills from our test and product videos. Pivoting on the spot and slipping through scooter traffic is where four-wheel steering earns its place. Available as a bare chassis or with the TAR navigation kit.

01
02
03
04
Video still. Driving past parked scooters
Video still. Crossing among scooter traffic
Video still. Side profile outdoors
Video still. Turning on the spot

Media

Fixed-axle bases need room to turn; Luchs A does not. All four wheels steer: it crabs sideways, pivots on the spot and carries your payload, with CAN, RS-485, RS-232 and 48 V / 12 V power ready. Available as an open chassis, or with TAR autonomy on board.

Luchs A Chassis by RJ Tech / Autonomy by TerraAgent Robotics (TAR)

File Download

Everything you need to evaluate and integrate the chassis

Technical

White Paper

Consult Now

Luchs A Technical Data Sheet

Luchs A Manual

Luchs 3D CAD
Model

CAN & ROS Development Resources

Request a Custom Quote

Our team will work with you to configure the perfect chassis for your autonomous vehicle application.

Submit Your Requirements

Tell us about your application and specifications

Technical Consultation

Our engineers will discuss the best configuration

Customized Proposal

Receive a detailed quote and timeline

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Access Technical Documents

· Technical White Paper – In-depth analysis of vehicle engineering and reliability
· Test Reports – Detailed performance and endurance test data
· Battery Specifications – Certified battery specs and compliance details

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