S2 xArm 850

Learn the xArm 850

A learning site for the robot arm at one station of IntelliMake's automated factory. It is written for four kinds of reader, from someone with no robotics background to the engineer who integrates the cell, and every fact on it links to its source. You do not need an account: every page, tier and question is open.

S2 in three sentences

The UFACTORY 850, which UFACTORY also calls the xArm 850, is a robot arm with six rotary joints and a rated maximum payload of 5 kg¹²³. This platform infers that the tool counts against that 5 kg⁴.
At IntelliMake's Phase 1 factory, which is designed to demonstrate autonomous production of personalised products, it is station S2⁵⁶.
Its job there is to pick up incoming material and move it between receiving, staging and production⁷.

Start the beginner path Choose a tier

The ten sections

01
Machine overview
What the machine is, what arms like it are used for, where it sits in its maker's range, and why it is at IntelliMake.
0 gaps · 2 contradictions recorded
02
Role in the Phase 1 production process
S2 as part of a production system: what comes before and after it, what goes in and comes out, the cameras, and why there are two arms.
10 gaps · 4 contradictions recorded
03
Major components
The parts of the system, what each one does, and how they connect.
4 gaps · 3 contradictions recorded
04
How the machine works
How the controller turns commands into joint motion, how the arm knows where its tool is, and how it senses a bump.
1 gap · 1 contradiction recorded
05
Key specifications and capabilities
The numbers that matter, where each one comes from, and which ones are disputed or missing.
7 gaps · 10 contradictions recorded
06
Basic operating sequence
S2's production cycle first, then the machine's own day: set up, power on, run, stop and shut down.
2 gaps · 2 contradictions recorded
07
Safety requirements
What can hurt you, the rules that prevent it, and the safeguards at S2 that are not yet confirmed.
25 gaps · 3 contradictions recorded
08
Control, communication and programming interfaces
How people and programs talk to the arm: Studio, the SDKs, ROS, Modbus and the controller's inputs and outputs.
6 gaps · 6 contradictions recorded
09
Limitations and open technical questions
What the machine cannot do, what nobody has published, and what is still open at S2.
47 gaps · 15 contradictions recorded
10
Manuals, videos and other useful resources
The manuals, software documentation and videos behind this site, with their caption status.
2 gaps · 0 contradictions recorded

How to read this site

Every record carries its class in words, with a shape, so colour is never the only signal. Anything that describes this project's simulation or agent design is labelled as such, and is never presented as the physical cell. The 3D model acts out the text beside it and adds no facts of its own; every page reads completely without it, and you can pause all motion from the site bar.

Confidence: Verified: A manufacturer or IntelliMake document says so, or it was observed directly. It does not mean anyone measured it at S2.
Confidence: Inferred: Reasoned from Verified facts. The reasoning is printed with the record.
Confidence: Assumed: Plausible but untested. The record says how it would be checked.
Kind: Gap: Not known. No figure or answer is given in its place.
Kind: Contradiction: Sources disagree. Both sides are shown, and the site does not pick one silently.
Kind: Recommendation: Project advice drawn from the records it cites. Not a fact about the machine and not a confidence class, so the filter never hides it.
Awaiting cell access: Awaiting cell access: could be confirmed or corrected once the physical S2 cell can be observed.
This project's simulation and agent design, not the physical cell: This project's simulation and agent design, not the physical cell.

How to read the labels, with worked examples · All sources and attribution

Provenance

References · 7

Each number in the text points here. Every entry states its confidence class in words and keeps its evidence one click away. How to read the labels.

Key to the badges

Confidence: Verified: A manufacturer or IntelliMake document says so, or it was observed directly. It does not mean anyone measured it at S2.
Confidence: Inferred: Reasoned from Verified facts. The reasoning is printed with the record.
Confidence: Assumed: Plausible but untested. The record says how it would be checked.
Kind: Gap: Not known. No figure or answer is given in its place.
Kind: Contradiction: Sources disagree. Both sides are shown, and the site does not pick one silently.
Kind: Recommendation: Project advice drawn from the records it cites. Not a fact about the machine and not a confidence class, so the filter never hides it.
Awaiting cell access: Awaiting cell access: could be confirmed or corrected once the physical S2 cell can be observed.
This project's simulation and agent design, not the physical cell: This project's simulation and agent design, not the physical cell.

Confidence: Verifiedspec-088
The record says
UFACTORY itself uses the name 'xArm 850' for the 850: its V2.7.0 release note refers to 'xArm 850 arms' in the firmware changes and to 'xArm 850' in the UFACTORY Studio changes.
Evidence · 2 citations
Added compatibility for xArm XX1305-series and xArm 850 arms whose serial number has an "E" as the third character from the end.
UFACTORY Release Note v2.7.0 · UFACTORY · v2.7.0, 'Firmware V2.7.0' list
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21
Open the source
for xArm 850, manual mode now uses its own equivalent-mass parameter (M).
UFACTORY Release Note v2.7.0 · UFACTORY · v2.7.0, 'Studio V2.7.0' list
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21
Open the source
Confidence: Verifiedspec-001
The record says
The UFACTORY 850 has 6 degrees of freedom (six rotary joints).
Evidence · 2 citations
Degrees of freedom 6
UFACTORY 850 product page · UFACTORY · Tech Specs > Comparison table, 'Degrees of freedom' row, UFactory 850 column (page names the machine 'UFACTORY 850'; spec tables say 'UFactory 850')
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21
Open the source
Degrees of Freedom 6
UFACTORY 850 User Manual V2.3.0 (PDF, older edition) · UFACTORY · Appendix 2, 1.2 850 Specifications, p.174 (manual names the machine '850' / 'UFactory 850')
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21
Open the source
Confidence: Verifiedspec-002
The record says
The UFACTORY 850 has a rated maximum payload of 5 kg.
Evidence · 3 citations
Max Payload 5 kg
UFACTORY 850 product page · UFACTORY · Products menu entry for the 850 (page names the machine 'UFACTORY 850'; spec tables say 'UFactory 850')
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21
Open the source
Maximum Payload 5kg
UFACTORY 850 Hardware Manual (online), 8. Technical Specifications · UFACTORY · Table 'UFACTORY 850', 'Maximum Payload' row (docs site 'UFACTORY 850 硬件手册', English version; names the machine 'UFACTORY 850')
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21
Open the source
Payload 5 kg
UFACTORY 850 User Manual V2.3.0 (PDF, older edition) · UFACTORY · Appendix 2, 1.2 850 Specifications, p.174 (manual names the machine '850' / 'UFactory 850')
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21
Open the source
Confidence: Inferredlim-001
The record says
The 850's maximum payload is 5 kg, which covers the end-of-arm tool and the part it holds.
Why we infer this: Verified: UFACTORY's specification table gives the 850 a maximum payload of 5 kg (spec-002), but does not say whether the end-of-arm tool counts toward it. Verified: the UFACTORY Studio glossary, which applies to the 850 (iface-145), defines the TCP payload setting as the actual weight of the 'end tool & other object'. No UFACTORY source joins the two in one statement. This platform infers that the 5 kg rating is read against the same total the controller models, tool plus part, so the tool's weight leaves less for the part. Until UFACTORY states it, treat that as an inference, not a rating.
Evidence · 2 citations
Maximum Payload
5kg
UFACTORY 850 Hardware Manual (online), 8. Technical Specifications · UFACTORY · Technical Specifications table, 'Maximum Payload' row
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21
Open the source
The payload weight refers to the actual(end tool &other object) weight in kg
UFACTORY Studio User Manual (online), 2. Glossary · UFACTORY · Glossary, 'TCP Payload'
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21
Open the source
Confidence: Verifiedint-001
The record says
The IntelliMake Phase 1 Factory is designed to demonstrate autonomous production of high-mix, low-volume personalized products.
Evidence · 1 citation
Designed to demonstrate autonomous production of high-mix, low-volume personalized products.
IntelliMake Phase 1 Factory: Autonomous Production Demonstrator (infographic) · IntelliMake.org · Header paragraph
© IntelliMake.org. Used with permission; redrawn for this platform. · Cleared for use by its owner · retrieved 2026-09-21
Project copy; not published on this site.
Confidence: Verifiedint-003
The record says
Station S2 of the Phase 1 factory is the UFactory xArm 850 cobot.
Evidence · 2 citations
S2 UFactory xArm 850 Cobot
IntelliMake Phase 1 Factory: Autonomous Production Demonstrator (infographic) · IntelliMake.org · S2 station label
© IntelliMake.org. Used with permission; redrawn for this platform. · Cleared for use by its owner · retrieved 2026-09-21
Project copy; not published on this site.
UFactory xArm 850 | S2
IntelliMake Phase 1 Factory: Autonomous Production Demonstrator (infographic) · IntelliMake.org · HW2 SME topic mapping table
© IntelliMake.org. Used with permission; redrawn for this platform. · Cleared for use by its owner · retrieved 2026-09-21
Project copy; not published on this site.
Confidence: Verifiedint-004
The record says
S2 picks and transfers incoming material between receiving, staging and production.
Evidence · 1 citation
Picks and transfers incoming material between receiving, staging, and production.
IntelliMake Phase 1 Factory: Autonomous Production Demonstrator (infographic) · IntelliMake.org · S2 station description
© IntelliMake.org. Used with permission; redrawn for this platform. · Cleared for use by its owner · retrieved 2026-09-21
Project copy; not published on this site.

Sources for this page

IntelliMake Phase 1 Factory: Autonomous Production Demonstrator (infographic) · IntelliMake.org (IntelliMake)
© IntelliMake.org. Used with permission; redrawn for this platform. · Cleared for use by its owner · retrieved 2026-09-21 · cited by 3 records here · Project copy; not published on this site.
UFACTORY 850 Hardware Manual (online), 8. Technical Specifications · UFACTORY (manufacturer)
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21 · cited by 2 records here · Open the source
UFACTORY 850 User Manual V2.3.0 (PDF, older edition) · UFACTORY (manufacturer)
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21 · cited by 2 records here · Open the source
UFACTORY Studio User Manual (online), 2. Glossary · UFACTORY (manufacturer)
© UFACTORY · All rights reserved; quoted briefly as evidence · retrieved 2026-09-21 · cited by 1 record here · Open the source

All sources and attribution