SOCO 6B Series Heavy Duty CNC Tube Benders
Six-axis CNC tube and pipe benders up to 168 mm (6.6") OD for automotive, truck and bus, boiler, shipbuilding and other heavy industries.

Power and Accuracy for Large-Diameter Tube
The SOCO 6B Series is SOCO's heavy-duty CNC tube bender line, replacing the earlier 5B Series. Every model has six individually programmable axes, built-in seats for the wiper, pressure and clamp dies, and single or multi-stack tooling, so large-diameter, thick-wall parts are bent with the same repeatability as small tube.
Models range from 76.2 mm to 168 mm OD, including two 127 mm machines that add a dedicated roll-bending stack for large radii.
Key Features
- 6 individually programmable CNC axes
- Capacity up to 168 mm (6.6") OD
- Programmable two-speed early mandrel extraction
- Each axis can be programmed independently during arm return
- Built-in wiper die, pressure die and clamp die seats
- Individually controllable pressure-die assist on each tooling stack
- Single-stack and multi-stack models
- Automatic mandrel lubrication and centralized greasing of all sliding surfaces, standard
- Options: digital hydraulic temperature control, LAN connection, and SOCO bending simulation with collision detection
6B Series Models
| Model | Max OD | CNC axes | Tooling stacks |
|---|---|---|---|
| SB-76X6B-1S / 2S / 3S | 76.2 mm (3") | 6 | 1, 2 or 3 |
| SB-90X6B-1S / 2S / 3S | 88.9 mm (3.5") | 6 | 1, 2 or 3 |
| SB-110X6B-1S / 2S | 110 mm (4.33") | 6 | 1 or 2 |
| SB-127X6B-1S / 2S | 127 mm (5") | 6 | 1 or 2 |
| SB-127X6B-3SV | 127 mm (5") | 6 | 3 (one roll-bending stack) |
| SB-127X6B-3SV-HD | 127 mm (5"), heavy duty | 6 | 3 (one roll-bending stack) |
| SB-168X6B-1S / 2S | 168 mm (6.6") | 6 | 1 or 2 |
Wall-thickness capacity depends on material and centerline radius. Contact us with your part details for a capacity check and full spec sheet.
SOCO i2 Controls
- Automatic springback compensation and short-length recapturing
- XYZ to YBC coordinate conversion, 3D part display, rotation and mirroring
- Bending interference and collision simulator, plus SOCO CAD Reader
- CMM connection with automatic compensation
- Variable Radius Measuring (VRM) system
- Internet remote monitoring and troubleshooting from a PC, tablet or phone
- Built-in maintenance scheduling with customizable alarms
- Self-diagnostics and error messages with I/O tables
Learn more about SOCO i2 software.

Typical Applications
- Truck, bus and off-highway exhaust and structural tubing
- Boiler and heat-exchanger tubes
- Shipbuilding and marine piping
- Heavy equipment frames, hydraulic and fluid lines
- Large-diameter automotive components
Supported by Tube Form Solutions
We spec the right 6B model and tooling for your parts, supply bend dies, mandrels and wipers through our tooling division, and handle installation, operator training and preventive maintenance. Compare other heavy benders on our heavy duty CNC tube benders page, or ask about leasing.
Frequently Asked Questions
What replaced the SOCO 5B Series?
The 6B Series is SOCO's current heavy-duty CNC bender line, with six programmable axes and capacities from 76.2 mm to 168 mm OD.
Can a 6B bender do roll bending?
Yes. The SB-127X6B-3SV and 3SV-HD include a dedicated roll-bending stack alongside draw-bending stacks for large radii.
Can I monitor the machine remotely?
Yes. SOCO i2 controls support live internet monitoring and remote troubleshooting from a computer, tablet or phone.