Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | FEC / DDK |
| Model | NFT-401RM1A-S |
| Product Family | AFC1500 |
| Tool Type | Straight electric nutrunner |
| Drive Type | DC servo/electric |
| Maximum Torque | 39.2 Nm |
| Torque Range | 0–39 Nm |
| Maximum Speed | 250 rpm |
| Weight | 2.1 kg |
| Compatible Controller | SAN4-24 |
| Application | Automated fastening |
| System Status | End of Production |
| Configuration | RM1A-S |
FEC’s published AFC1500 table places the NFT-401RM1A-S alongside the NFT-401RM1-S, with both rated at 39.2 Nm and 250 rpm and both using the SAN4-24 controller.
Product Introduction
DDK NFT-401RM1A-S AFC1500 Nutrunner
The NFT-401RM1A-S is a straight-format electric nutrunner from the AFC1500 family. It was designed for automated fastening applications where torque and rotational speed need to be controlled through the associated SAN4-24 controller. Its rated capacity is approximately 39 Nm, with a maximum speed of 250 rpm.
This is a tool rather than a standalone PLC or servo amplifier. The controller, cable, tool feedback, fastening program and mechanical joint all form part of the working system. Replacing only the nutrunner without checking the controller and parameter configuration can result in an apparently functional tool that does not produce the required tightening result.
NFT-401RM1A-S
Application Scenarios & Field Pitfalls
Engineering Pain Point
The most common mistake with legacy tightening equipment is treating maximum torque as the only selection criterion.
The NFT-401RM1A-S is rated at 39.2 Nm, but its suitability depends on the controller, speed requirement, tool geometry and fastening strategy. FEC specifically pairs this model with the SAN4-24 controller.
Typical Applications
- Automotive assembly: Controlled tightening of brackets, housings and mechanical joints.
- Component assembly: Repetitive fastening where torque consistency matters.
- Production fixtures: Multi-tool automated stations using AFC1500 control architecture.
- Legacy assembly equipment: Replacement of an existing NFT-401RM1A-S on AFC1500-based machinery.
Technical Pitfalls to Avoid
- Do not substitute the NFT-401RM1-S solely because the torque rating matches.
Both models are listed at 39.2 Nm and 250 rpm, but the model suffix represents a specific tool configuration. Verify the original machine BOM and tool identification before substitution. - Verify the controller before connecting the tool.
The documented controller for is SAN4-24. Using the wrong controller family can create electrical, feedback, or parameterization problems. - Check the actual tightening process, not just free-running speed.
A 250 rpm specification describes the tool’s maximum speed. Joint stiffness, rundown characteristics, torque strategy and programmed speed can materially change the real production cycle. - Inspect the tool cable and feedback circuit during troubleshooting.
Intermittent tightening faults can originate in the cable, connector or feedback path rather than the motor itself. For an older installation, cable condition should be checked before condemning an expensive tool. - Treat this as legacy equipment.
FEC lists the series as End of Production. Spare-tool condition, controller compatibility and availability of repair components should therefore be considered when planning continued operation.
Related Products
- NFT-401RM1-S — Straight nutrunner with the same published 39.2 Nm / 250 rpm rating and SAN4-24 controller pairing. Verify exact mechanical and electrical configuration before substitution.
- NFT-201RM1A-S — Smaller straight nutrunner rated at 19.61 Nm and 500 rpm. Better suited to lower-torque applications; not a torque-equivalent replacement.
- NFT-301RM2A-S — 29.42 Nm / 600 rpm nutrunner. Higher speed but lower maximum torque than .
- NFT-401RM3A-S — 39.2 Nm / 790 rpm version. Same nominal maximum torque but a substantially different speed and controller configuration; it uses SAN4-40, not .
- NFT-601RM3-S — 58.8 Nm / 790 rpm model for higher-torque applications, using SAN4-40.
- — Associated controller for the . The controller/tool pairing should be treated as a system rather than independent components.
- SAN4-40 — Higher-capacity controller used with several RM3 tools. It is not the documented controller for .
Procurement note: Specify DDK/FEC , , 39.2 Nm, 250 rpm, . For a production replacement, provide the existing controller model, tool cable/connector information, tool serial number, and required torque range. The and pairing should be verified together, particularly on an older installation.
