Brown SN 420 SA Semi-Automatic Band Saw
SEMI-AUTOMATIC BAND SAW - VARIABLE SPEED CONTROL
The Pedrazzoli Brown SN 420 SA is a semi-automatic horizontal band saw for accurate cutting 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.
With round capacity up to 11 inches at 90°, hydraulic clamping and automatic bow return, the SN 420 SA is built for shops that make repeated cuts while still positioning stock manually. For an overview of operating styles and fit, see our semi-automatic band saw guide.
The machine operates in either manual or semi-automatic mode and miters in both directions—up to 60° left and 45° right.
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.
Brown SN 420 SA Cutting Capacities
| 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. |
These capacities are taken from the current Brown SN 420 SA catalog. The existing capacity graphic remains a visual reference; this table makes the specifications searchable.
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
- 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
SN 420 SA Catalog
How Semi-Automatic Operation Helps
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.
The Brown SN 420 SA is a strong fit when a shop makes repeated cuts but does not need automatic stock feeding. It provides a simpler, more economical option for varied lengths, changing profiles and lower-volume production than a fully automatic saw.
Brown SN 420 SA FAQs
The operator positions the material and starts the cycle. 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.
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.