Semi-Automatic Band Saws for Metal Cutting
BROWN SN 420 SA
Pedrazzoli semi-automatic band saws give fabrication shops more consistent cuts with less operator handling. The Brown SN 420 SA combines a hydraulic vise, controlled bow movement, automatic bow return and dual-direction mitering in a heavy cast-iron machine built for tube, pipe, profiles and other metal-cutting work.
With round capacity up to 11 inches at 90°, the SN 420 SA bridges the gap between a manual gravity-feed saw and a fully automatic production machine. The operator positions the material and starts the cycle; the saw controls the cutting movement and returns the bow to its starting position while the vise remains closed.
Pedrazzoli machines are sold and supported in the United States by CML USA in Davenport, Iowa. Customers can see machines under power, obtain replacement blades and parts, and work with factory-trained service technicians.
Brown SN 420 SA Semi-Automatic Horizontal Band Saw
The Brown SN 420 SA is designed for accurate sawing of ferrous and nonferrous tube, pipe and structural profiles. Its heavy cast-iron base helps reduce vibration during the cut, supporting better squareness, longer blade life and a smoother finish.
The machine can operate in either manual or semi-automatic mode. In semi-automatic operation, a flow regulator controls bow descent speed, the hydraulic vise secures the workpiece, and the bow returns to the start position after the cut. The foot pedal starts the semi-automatic cycle so the operator can keep both hands available for material handling.
For frame, tube and fabrication work, the saw head miters in both directions—up to 60° left and 45° right. A large circular table rotates with the bow so the workpiece remains well supported through miter cuts.
Watch the Brown SN 420 SA Run
See the Brown SN 420 SA semi-automatic band saw in operation, including the cutting cycle and machine controls.
Cutting Capacities
These capacities are published as searchable text. The catalog graphic remains a useful visual reference.
| Cut angle | Round | Square | Rectangle |
|---|---|---|---|
| 45° right | 6.7 in. | 5.9 in. | 9.4 × 3.5 in. |
| 90° / 0° | 11 in. | 10.6 in. | 16.5 × 7.5 in. |
| 45° left | 9.1 in. | 8.7 in. | 9.1 × 5.9 in. |
| 60° left | 5.9 in. | 5.9 in. | 3.1 × 2.8 in. |
Brown SN 420 SA Specifications
| Specification | Brown SN 420 SA |
|---|---|
| Operating modes | Manual and semi-automatic |
| Miter range | 60° left to 45° right |
| Blade motor | 1.6 / 2.0 kW |
| Blade speed | 35 / 70 m/min; variable control |
| Blade size | 124 × 1.0625 × 0.035 in. |
| Machine weight | 1,342 lb. |
| Approximate dimensions | 56 × 74 × 83 in., including length stop |
| Work height | 37.5 in. |
| Vise | Adjustable semi-automatic hydraulic vise |
| Cycle start | Foot pedal |
Key Features for Production Metal Cutting
- Manual and semi-automatic operating modes for flexible shop use
- Hydraulic vise and controlled bow movement for a repeatable cutting cycle
- Saw head positions to 60° left and 45° right for dual-direction miter work
- Variable blade-speed adjustment for different metals and profiles
- Heavy cast-iron base designed to reduce cutting vibration
- Large circular miter table that rotates with the bow
- Laser indicator to help align the cutting position
- Adjustable carbide blade guides
- Electronic sensor that stops band motion if the blade breaks
- Coolant reservoir with removable electric pump for easier cleaning
- Programmable piece counter and digital display
- Forklift-ready machine base for easier placement
When Should You Choose a Semi-Automatic Band Saw?
A semi-automatic band saw is a strong fit when a shop makes repeated cuts but does not need automatic stock feeding. Compared with a manual saw, it reduces the number of actions the operator performs during every cut. Compared with a fully automatic saw, it offers a simpler and more economical solution for varied lengths, changing profiles and lower-volume production.
Typical users include structural fabricators, tube and pipe shops, weld shops, maintenance departments, machine builders and job shops. The Brown SN 420 SA is particularly useful when the work includes both straight cutoff and mitered parts.
Manual, Semi-Automatic or Fully Automatic?
| Saw type | Best for | Operator involvement | Pedrazzoli option |
|---|---|---|---|
| Manual / gravity feed | Occasional cuts, maintenance and lower-volume work | Operator positions and resets the saw for each cut | SN 300 Newton |
| Semi-automatic | Repeated cuts, varied lengths and miter work | Operator positions stock; the machine controls the cutting cycle and bow return | Brown SN 420 SA |
| Fully automatic | Long production runs of repeated parts | Machine feeds stock and repeats programmed cuts | Ask CML USA about the appropriate production cutting system |
Semi-Automatic Band Saw or Circular Cold Saw?
Choose a band saw when you need flexibility across larger sections, solids and mixed profiles, or when material size exceeds the practical capacity of a cold saw. Choose a circular cold saw when fast cycle time and a burr-free, weld-ready finish are the highest priorities on tube and profiles.
Many fabrication shops use both: a semi-automatic horizontal band saw for large or changing sections and a cold saw for fast, finished cutoff work. CML USA can review the material, wall thickness, cut angle and production volume before recommending the best process.
U.S. Parts, Blades, Demonstrations and Service
Pedrazzoli band saws are sold and serviced in the Americas by CML USA, Inc. in Davenport, Iowa. Machines can be demonstrated under power, and customers have a U.S. source for blades, spare parts and technical support.
Buying an industrial saw is not only a comparison of capacity and price. Local application help, replacement parts and service support affect the machine’s useful life and the cost of every cut.
Semi-Automatic Band Saw FAQs
The operator positions the material and starts the cycle. On the Brown SN 420 SA, the hydraulic vise secures the work, controlled bow movement completes the cut, and the bow returns to the starting position while the vise remains closed.
At 90°, the machine cuts round material up to 11 inches, square material up to 10.6 inches, and rectangular material up to 16.5 × 7.5 inches.
Yes. The saw head positions to fixed stops up to 60° left and 45° right, making it suitable for straight and dual-direction miter cutting.
Yes. The Brown SN 420 SA supports both manual and semi-automatic operating modes.
Yes. CML USA in Davenport, Iowa supplies blades and parts and provides technical support and factory-trained service.
Contact CML USA to arrange a demonstration and confirm current machine availability.
Request a Brown SN 420 SA Quote
Tell us what material you cut, your largest section, required miter angles and expected production volume. We will help confirm whether the Brown SN 420 SA is the right semi-automatic band saw for your application.
Sold and serviced in the USA — CML USA, Inc., Davenport, Iowa. Machines under power for demonstration, spare parts and blades in stock, and factory-trained technicians serving fabricators across North and South America.