RealMan

Introduction / Overview

RealMan Robotics solved a problem most cobot makers never noticed they had: their arms are built like machines, not like arms. A conventional collaborative manipulator in the 5 kg payload class weighs 25–30 kg and lives bolted to a bench beside a control cabinet — useless for the humanoid torsos, mobile platforms, and human-scale workspaces where robotics is actually heading. RealMan — a Beijing-headquartered national high-tech enterprise with production in Jiangsu, founded by a team building robotic arms since 2010 — styles itself the definer of the ultra-lightweight humanoid robotic arm, and the claim is dimensional: the RM series is modeled 1:1 on the actual size and weight of the human arm, joint for joint, weighing roughly one quarter of an ordinary cobot while still lifting a full 5 kg.

The numbers make the thesis concrete. The RM65-B (6-DoF) weighs just 7.2 kg with its controller fully integrated — no cabinet — yet rates 5 kg payload with a 9 kg peak across a 610 mm working radius. The RM75 (7-DoF) adds redundant kinematics for obstacle avoidance and infinite joint configurations at ±0.05 mm repeatability and up to 1.8 m/s TCP speed, with 6F force versions of both embedding a six-axis force/torque sensor (200 N / 7 N·m, ±0.5% FS) for contact-rich precision work. Around the core: the RML series long arms (the 3 kg RML63 stretching reach), the cost-effective ECO series, the entry GEN series, single- and dual-arm compound robots for mobile manipulation, and the integrated joints and actuators RealMan builds everything from — controllers, drivers, servo motors, and harmonic reducers all developed in-house behind 120+ intellectual-property assets. With built-in contact-stop safety, drag-and-drop teaching, and multi-platform interfaces, RealMan arms serve automotive parts, 3C electronics, metal processing, food packaging, medical health, new retail, education, and — decisively — the humanoid and mobile-manipulator builders for whom arm mass is the binding constraint.

Design and Features

The Ultra-Lightweight Thesis

• A quarter the weight, the full payload — 5 kg lifted by a 7.2–7.9 kg arm: a payload-to-weight ratio that redraws what platforms can carry manipulation at all.
• Human-arm anthropometry — 1:1 scaling to human arm dimensions and mass, joint-matched — meaning RealMan arms mount where human arms fit: humanoid shoulders, mobile torsos, benchtops, and cell layouts designed for people.
• Controller inside — full integration eliminates the control cabinet: one cable-light unit to mount, power, and run — the difference between an installation project and a bolt-on.

The RM Series — The Core Five

• RM65-B / RM65-6F — the 6-DoF foundation: 5 kg payload, 9 kg peak, 610–638.5 mm radius, 7.2–7.3 kg total; the 6F adding six-axis force sensing.
• RM75-B / RM75-6F — the 7-DoF humanoid-configuration arms: redundant kinematics for elbow-around-obstacle motion and unlimited pose solutions, ±0.05 mm repeatability, 1.8 m/s TCP, 7.8–7.9 kg total; the 6F's built-in 200 N / 7 N·m force/torque sensor enabling polishing, insertion, and compliant assembly.
• Safety and teachability throughout — built-in contact-stop modules for human-machine collaboration and drag teaching that programs by demonstration.

The Wider Family

• RML series — lengthened-reach variants (e.g., the 6-DoF, 3 kg RML63) trading payload for workspace.
• ECO series — the cost-effective tier (ECO65 class) preserving the lightweight architecture at accessible pricing.
• GEN series — the entry line for education and first deployments.
• Compound robots — single- and dual-arm mobile manipulators composing RealMan arms onto mobile bases: humanoid-style torsos and service platforms from one catalog.
• Joints and actuators — the integrated modules themselves, sold to builders — the same in-house drivetrain powering every arm.

The In-House Foundation

Controllers, drivers, servo motors, and harmonic reducers all self-developed: performance tuning, integration coherence, and supply-chain resilience that assembled-component competitors cannot control — codified in 120+ IP assets.

Technology and Specifications

Choosing Within the Range

Repeatability ±0.05 mm; TCP speed to 1.8 m/s (RM75 class). Confirm current datasheets before specifying — configurations vary, and datasheets are available on request.

Why Arm Mass Is the Hidden Spec

Every kilogram of arm is a kilogram the platform beneath must carry, power, and balance — which is why heavy cobots never made it onto humanoids or nimble mobile bases. RealMan's 7 kg-class arms are the reason its manipulators appear across wheeled humanoids, compound service robots, and research torsos industry-wide: in mobile manipulation, the lightest capable arm wins the socket.

Position in the Market

Against UFactory xArm and compact-cobot rivals, RealMan competes on the field's best payload-to-weight ratio, integrated control, and the 7-DoF redundancy of the RM75; against heavier industrial cobots, on redeployability and mobile compatibility — while the ECO and GEN tiers ladder pricing down to education budgets.

Applications and Use Cases

Humanoid and Mobile-Manipulator Arms

The defining market: RM-series arms as the manipulation layer of wheeled humanoids, compound robots, and research torsos — where anthropometric scale and low mass are prerequisites.

Light Industry

Automotive parts, 3C electronics, metal processing, and food packaging cells exploiting fast redeployment and drag-teach programming.

Medical Health and New Retail

Human-proximate applications — assistance, dispensing, service counters — built on contact-stop safety and human-scale geometry.

Research and Education

7-DoF redundancy studies, force-control research, and teaching fleets across the ECO/GEN accessibility ladder.

Contact-Rich Automation

The 6F variants' embedded force/torque sensing serving polishing, insertion, testing, and compliant-assembly tasks.

Advantages / Benefits

• The payload-to-weight crown — 5 kg from a 7.2 kg arm: the ratio that defines the ultra-lightweight class.
• Anthropometric by design — human-arm dimensions making humanoid and human-space integration native, not adapted.
• Cabinet-free deployment — integrated controllers collapsing installation to a bracket and a cable.
• 7-DoF intelligence — RM75 redundancy navigating cluttered workspaces rigid 6-axis arms cannot.
• Force sensing built in — 6F variants shipping contact capability without external sensor engineering.
• Full-stack in-house — motors to reducers to controllers under one roof, with 120+ IP assets and a component business open to builders.

For buyers researching where to buy RealMan arms, or comparing RM65, RM75, RML63, and ECO65 prices and costs against xArm and other lightweight manipulators, the evaluation should weigh payload-to-weight ratio, kinematic redundancy, force options, integration simplicity, and tier fit — the dimensions where RealMan's definitional focus leads.

FAQ

What is RealMan Robotics?

RealMan Robotics is a Beijing-headquartered national high-tech enterprise — its founding team building robotic arms since 2010 — that defines the ultra-lightweight humanoid robotic arm category: the RM, RML, ECO, and GEN series plus compound mobile manipulators and in-house joints, all built on self-developed controllers, motors, and harmonic reducers.

What is the RealMan RM65?

The RM65 is RealMan's 6-DoF foundation arm: 5 kg payload with 9 kg peak across a 610–638.5 mm working radius, weighing just 7.2–7.3 kg with its controller fully integrated — available in Basic and six-axis-force (6F) versions.

What is the RealMan RM75?

The RM75 is the 7-DoF humanoid-configuration arm: redundant kinematics enabling obstacle avoidance and unlimited joint configurations, ±0.05 mm repeatability, TCP speeds to 1.8 m/s, and 7.8–7.9 kg total mass — with the RM75-6F embedding a 200 N / 7 N·m six-axis force/torque sensor for precision contact tasks.

Why are RealMan arms called "humanoid" robotic arms?

Because they are modeled 1:1 on the human arm — matching its size, weight, and joint arrangement — at roughly a quarter of a conventional cobot's mass, letting them mount on humanoid torsos, mobile robots, and human-scale workspaces directly.

What is the difference between the B and 6F versions?

B (Basic) versions provide the core arm; 6F versions integrate a six-axis force/torque sensor at the wrist, enabling force-controlled applications like polishing, insertion, and compliant assembly without external sensing hardware.

Does RealMan make complete robots?

Yes — compound robots composing single or dual RealMan arms onto mobile platforms for service and manipulation applications, plus the integrated joint modules and actuators sold to robot builders directly.

Why is RealMan important?

RealMan defined and leads the ultra-lightweight arm category — the payload-to-weight ratio, integrated control, and anthropometric design that made capable manipulation portable enough for the humanoid and mobile-robot era.

How much do RealMan arms cost?

The range tiers deliberately: GEN and ECO series at education-accessible levels, the RM series in the professional lightweight-cobot class, and compound robots quoted by configuration. Contact a distributor for current pricing, model guidance, datasheets, and delivery timelines for your region.

Summary

RealMan built the arm the robotics era actually needed: human in size, human in weight, and light enough — 7.2 kilograms, controller included — to lift five kilograms from the shoulder of a humanoid or the deck of a mobile base where thirty-kilogram cobots could never go. From the redundant 7-DoF RM75 threading cluttered workspaces at ±0.05 mm to force-sensing 6F variants, long-reach RML arms, value ECO and GEN tiers, dual-arm compound robots, and the in-house joints beneath them all, RealMan's catalog is the ultra-lightweight category it defined. For anyone looking to buy a RealMan RM65, RM75, RML63, or ECO65, compare their costs against xArm and other lightweight manipulators, or plan a humanoid, mobile-manipulation, industrial, or research integration, this guide provides the essential foundation.