SR vs Welding Positioners
Side-by-side comparison of SR (DAIHEN) and Welding Positioners (Sankyo Automation) — specs, pricing, Robo Index, and verified deployments. Updated daily.
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Optimized for Hospitality & F&B buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- SRJapan
- Welding PositionersUnited States
Year First Available
- SR1983
- Welding Positioners—
Verified Deployments
- SR0 Deployments
- Welding Positioners0 Deployments
Layer 2: Operational
Availability Status
- SRACTIVE
- Welding PositionersACTIVE
Arm Mechanics
Payload
- SR—
- Welding Positioners3,600 kg
Robot Weight
- SR—
- Welding Positioners780 kg
Reach
- SR—
- Welding Positioners900 mm
Degrees of Freedom
- SR6
- Welding Positioners2
Repeatability
- SR—
- Welding Positioners±0.05 mm
Path Accuracy
- SR—
- Welding Positioners±0.1 mm
IP Rating (Arm)
- SR—
- Welding PositionersIP67
IP Rating (Wrist)
- SR—
- Welding PositionersIP67
Performance
Cycle Time (25/305/25)
- SR—
- Welding Positioners0.9 s
MTBF
- SR—
- Welding Positioners80,000 hrs
Duty Cycle
- SR—
- Welding Positionerscontinuous 24 7
Vibration Damping
- SR—
- Welding Positionersactive model based
Safety
Safety Category
- SR—
- Welding PositionersCat.3 PLd
Dual Check Safety
- SR—
- Welding PositionersYes
Safety I/O Pairs
- SR—
- Welding Positioners4
E-Stop Response
- SR—
- Welding Positioners20 ms
Safe Zone Count
- SR—
- Welding Positioners4
Controller & Programming
Controller Model
- SRAX series controller (co-developed with Nachi-Fujikoshi)
- Welding PositionersKR C4 KRC
Programming Languages
- SR—
- Welding PositionersKRL
Teach Pendant Type
- SRwired button
- Welding Positionerswired button
Offline Programming
- SR—
- Welding PositionersKUKA.Sim Pro
Digital Twin Support
- SR—
- Welding PositionersNo
Connectivity
ROS-Industrial Support
- SR—
- Welding Positionersnone
IoT / Cloud Platform
- SR—
- Welding PositionersKUKA Connect
Cybersecurity Certs
- SR—
- Welding PositionersIEC 62443 SL1
Predictive Maintenance
- SR—
- Welding Positionersthreshold based
End-Effector
Tool Flange Standard
- SR—
- Welding PositionersISO 9409-1
Tool Changer (ISO)
- SR—
- Welding Positionersproprietary
Internal Cable Routing
- SR—
- Welding Positionersexternal only
Pneumatic Lines
- SR—
- Welding Positioners2
Electrical Lines
- SR—
- Welding Positioners10
Commercial
Warranty
- SR—
- Welding Positioners1 yrs
Service Network
- SRglobal
- Welding Positionersglobal
Spare Parts Lead Time
- SR—
- Welding Positioners14 days
Expected Service Life
- SR—
- Welding Positioners10 yrs
| ||
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Japan | United States |
| Year First Available (values differ) | 1983 | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Payload (priority for Hospitality & F&B buyers) (values differ) | — | 3,600 kg |
| Robot Weight (priority for Hospitality & F&B buyers) (values differ) | — | 780 kg |
| Reach (values differ) | — | 900 mm |
| Degrees of Freedom (values differ) | 6 | 2 |
| Repeatability (values differ) | — | ±0.05 mm |
| Path Accuracy (values differ) | — | ±0.1 mm |
| IP Rating (Arm) (values differ) | — | IP67 |
| IP Rating (Wrist) (values differ) | — | IP67 |
| Performance | ||
| Cycle Time (25/305/25) (values differ) | — | 0.9 s |
| MTBF (values differ) | — | 80,000 hrs |
| Duty Cycle (values differ) | — | continuous 24 7 |
| Vibration Damping (values differ) | — | active model based |
| Safety | ||
| Safety Category (values differ) | — | Cat.3 PLd |
| Dual Check Safety (values differ) | — | Yes |
| Safety I/O Pairs (values differ) | — | 4 |
| E-Stop Response (values differ) | — | 20 ms |
| Safe Zone Count (values differ) | — | 4 |
| Controller & Programming | ||
| Controller Model (values differ) | AX series controller (co-developed with Nachi-Fujikoshi) | KR C4 KRC |
| Programming Languages (values differ) | — | KRL |
| Teach Pendant Type | wired button | wired button |
| Offline Programming (values differ) | — | KUKA.Sim Pro |
| Digital Twin Support (values differ) | — | No |
| Connectivity | ||
| ROS-Industrial Support (values differ) | — | none |
| IoT / Cloud Platform (values differ) | — | KUKA Connect |
| Cybersecurity Certs (values differ) | — | IEC 62443 SL1 |
| Predictive Maintenance (values differ) | — | threshold based |
| End-Effector | ||
| Tool Flange Standard (values differ) | — | ISO 9409-1 |
| Tool Changer (ISO) (values differ) | — | proprietary |
| Internal Cable Routing (values differ) | — | external only |
| Pneumatic Lines (values differ) | — | 2 |
| Electrical Lines (values differ) | — | 10 |
| Commercial | ||
| Warranty (values differ) | — | 1 yrs |
| Service Network | global | global |
| Spare Parts Lead Time (values differ) | — | 14 days |
| Expected Service Life (values differ) | — | 10 yrs |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Price Range (USD), Battery / Shift Runtime, Max TCP Speed, Communication Protocols, Price (USD)
best in categoryweakest in categoryvalues differ
Trade-offs at a glance
Frequently asked
Who makes SR and Welding Positioners?
SR is made by DAIHEN, based in JP. Welding Positioners is made by Sankyo Automation, based in US.
How do SR and Welding Positioners compare on the Robo Index?
SR grades AA on the Robo Index. Welding Positioners grades BBB. The Robo Index is a credibility grade (AAA … C) that blends commercial maturity, verified deployments, company standing, and independent coverage — see methodology for the full breakdown.
Are SR and Welding Positioners in the same category?
Both robots are classified as Industrial Arm on Robolist. Filters and ranking treat them as direct alternatives.
What is the realistic total cost of ownership for Industrial Arm robots?
Hardware cost is one input. Industrial Arm TCO also includes integration, training, downtime, and end-of-life. Our breakdown: TCO of a 6-Axis Arm Cell: Hardware, EOAT, Integration, Programming.
What should a buyer ask vendors when choosing between SR and Welding Positioners?
Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: Industrial Arm Vendor Selection: Capability Matrices and Proof Points.
Going deeper — picking the right robot
TCO of a 6-Axis Arm Cell: Hardware, EOAT, Integration, Programming
7 min readIndustrial Arms
Industrial Arm Vendor Selection: Capability Matrices and Proof Points
9 min readIndustrial Arms
Programming Approaches: Teach Pendant, Offline, AI-Assisted — What Each Costs You
8 min readIndustrial Arms
Build vs buy vs lease: which model fits a first deployment
8 min readChoosing Your First Robot
The hidden specs vendors hope you'll miss
10 min readReading the Spec Sheet
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About this comparison
SR vs Welding Positioners compares two robots in the industrial-arm category. All data is sourced from manufacturer spec sheets, verified deployments, and third-party filings; see our methodology for how the Robo Index is calculated.