Side-by-side comparison of PD400UR (Nitto Seiko America) and SPR-801R (DAIHEN) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Manufacturing buyers. Priority specs lifted to the top and marked with a target.
Year First Available


Verified Deployments


Availability Status


Payload


Robot Weight


Controller Model


Teach Pendant Type


Tool Flange Standard


Service Network


![]() | ||
|---|---|---|
| Layer 1: Identity & Trust | ||
| Year First Available (values differ) | 2021 | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Arm Mechanics | ||
| Payload (priority for Manufacturing buyers) (values differ) | — | 3 kg |
| Robot Weight (values differ) | — | 80 kg |
| Controller & Programming | ||
| Controller Model (values differ) | SD600T Series NX Driver | — |
| Teach Pendant Type (values differ) | wired touch | — |
| End-Effector | ||
| Tool Flange Standard (values differ) | ISO 9409-1-50-4-M6 | — |
| Commercial | ||
| Service Network (values differ) | regional | — |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Manufacturer Country, Price Range (USD), Battery / Shift Runtime, Reach, Degrees of Freedom, Repeatability, Path Accuracy, Max TCP Speed, IP Rating (Arm), IP Rating (Wrist), Cycle Time (25/305/25), MTBF, Duty Cycle, Vibration Damping, Safety Category, Dual Check Safety, Safety I/O Pairs, E-Stop Response, Safe Zone Count, Programming Languages, Offline Programming, Digital Twin Support, Communication Protocols, ROS-Industrial Support, IoT / Cloud Platform, Cybersecurity Certs, Predictive Maintenance, Tool Changer (ISO), Internal Cable Routing, Pneumatic Lines, Electrical Lines, Price (USD), Warranty, Spare Parts Lead Time, Expected Service Life
Frequently asked
PD400UR is made by Nitto Seiko America. SPR-801R is made by DAIHEN.
PD400UR scores 19/100. SPR-801R scores 28/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
Both robots are classified as Industrial Arm on Robolist. Filters and ranking treat them as direct alternatives.
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.
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
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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
PD400UR vs SPR-801R 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 Robolist Product Score is calculated.