Grinding
CNC grinding uses highly controlled abrasive motion to remove microscopic material, achieving ultra-tight tolerances, smooth finishes, and precise geometries with exceptional repeatability.
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30i/31i/32i-MODEL B Series
31i-B5
Controlled Axes / Path
34/16
Feed Axes / Path
26/12
Spindle Axes / Path
8/4
Max Controlled Paths
6
The FANUC 31i‑B5 CNC is purpose-built for advanced 5‑axis machining, delivering precision control for milling, turning, and grinding applications. Designed for flexibility, it supports a wide range of operator interfaces, including iHMI-enabled panels and PC front-end systems, improving usability and shop-floor efficiency.
With integrated 5‑axis capabilities such as Tool Center Point Control and Tilted Working Plane, combined with AI Contour Control and nano-level technologies, the 31i‑B5 ensures outstanding accuracy and surface quality. Advanced safety, control, and PMC functionality make it a powerful solution for complex, high-performance manufacturing.
Specifications
Technical Details
Essential technical details and valuable information about our products to help you make the right decisions and get the most out of your FANUC products.
- Controlled Axes per Path
- 34/16
- Max Feed Axes Total per Path
- 26/12
- Max Spindle Axes Total per Path
- 8/4
- Max Axes per Path
- 5
- Max Controlled Paths
- 6
- LCD Version
- Stand Alone Version
- LCD Panel
- LCD Panel for iHMI
- PC Front End
- PC Front End iHMI
- Touch Systems
- Handheld Control Unit
- Machine Operators Panel
- Max I/O
- 4096
- Max I/O Link
- 3
- Max PMC Channels
- 5
- Max Steps
- 300000
- Block Function
- Yes
- 3D Interference Check
- Dual Check Safety
- Smart Machine Control
- Program Restart
- Quick Program Restart
- Nano Interpolation
- Nano Smoothing
- Fine Surface Technology
- AI Contour Control
- Macro Executor
- C Executor
- FANUC Picture
- FOCAS
- Tool Functions
- Tool Management System
- Tilted Working Plane
- Tool Center Point Control
- Smooth Simultaneous 5-Axis Machining
- Error Compensation
- Volumetric Error Compensation
Downloads
Download for More Information
Access essential technical specifications and valuable information about our products through our downloadable documents, supporting your decision-making process and maximizing your use of FANUC products.
Explore the Full Lineup
The 30i/31i/32i-MODEL B Series
30i/31i/32i‑MODEL B CNCs deliver multi-axis, high-speed precision machining, with Plus versions adding advanced hardware and superior surface quality.
Applications
The Perfect Fit for Your Application
Milling
Versatile CNC milling machines and CNC machining centers from FANUC offer the highest surface quality and flexibility. Watch our solutions in action.
Turning
CNC turning solutions from FANUC America will cut costs by increasing productivity. Learn all about high speed CNC turning with feature rich CNC.