Realman Robotics Ultra-Lightweight Robotic Arm (RM65-B)

Most robot arms ask you to build the room around them: a bolted-down base, a cabinet, a cage. The Realman Robotics Ultra-Lightweight Robotic Arm (RM65-B) turns that around. It is an aluminum-alloy collaborative arm with a body weight of 7.2 kg, light enough that the question becomes where you want to put it, not whether the floor can take it.

The product is available through this page, by quotation.

Background

The company and the RM series

The RM65-B comes from RealMan (Beijing) Intelligent Technology Co., Ltd., and is a lightweight 6-DoF collaborative robot arm. It belongs to the RM series, which has five models: the RM65/75-B basic versions and the RM65/75-6F six-axis force versions. The RM65-B is the basic version of the 65 line, the one without the added force sensing of its 6F sibling.

A basic version is a sensible starting point for many buyers. It gives you the arm, its motion and its safety behavior without paying for capability a given task may never use. If your work later calls for force feedback, the series has a path for that, and we cover it further down.

Positioning and key technology

The RM65-B is built around three ideas: low mass, safe contact and proven endurance. The low mass comes from the aluminum-alloy construction and shows in the 7.2 kg body weight. The safe contact comes from a built-in safety module that stops operation upon contact. This is what lets people work next to the arm and lets an operator guide it by hand through drag-and-drop teaching, which makes the interaction between person and robot far more approachable.

The endurance figure is a specific one. The arm has undergone testing and certification demonstrating that it can operate continuously under a 5 kg load for over 30,000 hours without failure. For a buyer who plans to run an arm every working day, that is the figure that speaks to durability in demanding industrial settings.

Technical Specifications

Specifications as published by the manufacturer; confirmed against the datasheet at quotation.

The manufacturer has not published the packaging dimensions, the contents of the box, the operating temperature, the certifications, the joint brakes or the noise level; they are confirmed at quotation.

What makes the RM65-B different from a conventional industrial arm?

The first difference is weight. A conventional industrial arm is a fixed installation. The RM65-B, at 7.2 kg, is something a team can carry to a bench, mount on a mobile base or move between cells. That changes how a small workshop, a laboratory or a school thinks about automation, because the arm stops being a capital project and becomes a tool.

The second difference is how it treats people. The built-in safety module stops the arm on contact, so the usual assumption of fencing the robot off does not have to be the starting point of every design. Drag-and-drop teaching follows from the same idea: a person can move the arm to show it a path rather than typing every coordinate.

The third difference is the motion envelope. Six degrees of freedom with a 610 mm working radius give a compact but capable reach. Joint ranges are generous: the last joint, J6, turns ±360°, and J1 and J4 reach ±178°. Joints J3 to J6 move at up to 225°/s, and J1 and J2 at up to 180°/s. Repeatability of ±0.05 mm is what makes the arm useful for tasks where the same position must be hit again and again.

What does the six-axis force version add?

The RM series pairs each basic version with a six-axis force version. For the 65 line, that is the Realman Robotics Ultra-Lightweight Robotic Arm (RM65-6F). The split is simple: B is the basic version, 6F carries six-axis force sensing. If your work is about moving to a position, the basic version is the natural fit. If it is about how hard the arm pushes, such as polishing, insertion or careful assembly, the force version is the one to look at. Its own figures are listed on its own page and should not be read across to the RM65-B.

Who is the RM65-B for?

Research and education teams are the first group. A light arm with six degrees of freedom, hand teaching and a built-in safety module suits a laboratory where students and engineers stand close to the machine and where the setup changes from one project to the next.

Small manufacturers and workshops are the second. Where floor space is tight and a full industrial cell is out of proportion to the job, a compact collaborative arm can take on repetitive handling, loading and light assembly work beside the people already doing it.

Builders of mobile and space-constrained systems are the third. When the arm has to ride on a platform or fit inside a small machine, every kilogram counts, and 7.2 kg is a strong starting point.

Buyers who need force sensing should look at the RM65-6F instead. Those who are still comparing options can browse our Robot Arms and Cobots categories. For a more entry-level arm, the Realman Robotics GEN72-B Entry Level Affordable Robotic Arm (GEN72-B) is also listed.

What is the RM65-B used for?

1. Laboratory automation: repeatable handling of samples and equipment where a person works close by.
2. Teaching and training: hands-on robotics courses where students guide the arm and see how motion is programmed.
3. Light assembly: placing and positioning small parts at a work cell that has little room to spare.
4. Mobile manipulation: mounting the arm on a wheeled or tracked base so that it can work wherever the platform goes.
5. Prototyping: testing an automation idea quickly before committing to a larger installation.
6. Human-robot collaboration: sharing a workstation with an operator, with contact stopping the arm.

Pricing and Availability

We do not print prices on this page. Quotation is how you buy: tell us what you plan to do with the arm and we respond with an offer. Delivery, customs and support are arranged with the quotation, so you know the full picture before you commit. The Realman Robotics Ultra-Lightweight Robotic Arm (RM65-B) is available on this page.

Frequently Asked Questions

How many degrees of freedom does the RM65-B have?

It has 6 degrees of freedom. Joint ranges run from J1 ±178° to J6 ±360°.

How much does the arm weigh?

The body weight is 7.2 kg. The arm is made of aluminum alloy.

How far can it reach?

The working radius is 610 mm. Repeatability is ±0.05 mm.

Is it safe to work next to it?

The arm has a built-in safety module that stops operation upon contact. This supports human-machine collaboration and hand-guided teaching.

How reliable is it?

The arm has been tested and certified to operate continuously under a 5 kg load for over 30,000 hours without failure.

What is the difference between the RM65-B and the RM65-6F?

The RM65-B is the basic version, while the RM65-6F is the six-axis force version of the same line. Tell us your task and we will help you choose.

Where can I buy the RM65-B and what does it cost?

You can buy it through this page, by quotation. We do not publish a price here; send us your request and we respond with an offer.

Summary

The RM65-B answers a simple question: what if the arm were the easy part of the installation? At 7.2 kg, with a 610 mm working radius, ±0.05 mm repeatability, a safety module that stops on contact and a tested endurance of over 30,000 hours under a 5 kg load, it fits the laboratory, the small workshop and the mobile platform alike. If this arm fits your project, this page is the starting point.