BS400S
CNC All Servo Metal Band Saws
Why Is the BS400S CNC Full-Servo Band Saw the Best Choice for Precision Metal Cutting?
Answer: The BS400S replaces traditional hydraulic systems with full servo motor drive, delivering 400mm × 400mm cutting capacity, an ultra-short remnant of just 25mm, and fully enclosed safety protection. Designed for semiconductor components, precision molds, and structural steel fabrication, it achieves high-accuracy automated cutting without hydraulic contamination.
BS400S CNC Full-Servo Band Saw is Big Stone Machinery's flagship precision metal cutting machine. Using full servo motor drive instead of conventional hydraulics, it offers 400mm × 400mm cutting capacity, minimal remnant material, and a fully enclosed safety design — the ideal solution for semiconductor parts, precision molds, and structural steel processing.
Cutting Capacity: 400mm (W) × 400mm (H)
Technical Overview:
The BS400S CNC Servo Band Saw represents a breakthrough in precision metal cutting. The entire machine uses a full servo motor drive system instead of traditional hydraulic motors, completely eliminating the thermal drift and oil leakage common in hydraulic systems. By perfectly combining servo motors with high-precision ball screws, the BS400S achieves exceptionally accurate feed control and dramatically reduces cutting remnants, boosting material utilization. Its fully enclosed body design not only significantly reduces noise but also provides the highest level of operator safety.
How to Complete the First Automatic Cut on the BS400S in 3 Steps
Step 1 – Enter Parameters on the Touchscreen: Select material type, input cut length and quantity. The CNC system automatically recommends the optimal blade speed and feed rate.
Step 2 – Load the Workpiece and Auto-Position: Place the steel on the feed bed; the servo system drives the ball screws to position the material, and the guide arm moves automatically to the best clamping point.
Step 3 – Start the Fully Automatic Cycle: Press the start button — the BS400S sequentially feeds, clamps, cuts, and ejects the remnant, all without manual intervention.
BS400S Frequently Asked Questions
Q: What is the maximum cutting capacity of the BS400S?
A: Round Ø400mm, rectangular 400mm × 400mm, bundle height 20‑300mm.
Q: What drive system does the BS400S use?
A: It uses a full servo motor drive — no hydraulic system, no thermal drift, and no oil leaks.
Q: What is the minimum remnant length?
A: In automatic feed mode, the minimum remnant is only 25mm, significantly saving material costs.
Q: How is operator safety ensured?
A: The fully enclosed body blocks noise and spray; if the blade breaks, the machine automatically stops for protection.
Q: What are the control system highlights?
A: It features a 10‑inch CNC touchscreen that supports offline programming and automatic guide arm positioning.
Q: What are the advantages over traditional hydraulic band saws?
A: Full servo without hydraulics means higher precision, lower maintenance, and zero oil pollution — ideal for precision machining.
Features
- Down feed and material feed is by ball screws with servo motors for efficient and accurate cutting.
- The machine is fully enclosed ensuring safe, clean and quiet operation.
- Independent feed bed and vice system to provide accurate feeding of packs or bent materials.
- Both feed and main fixed vice jaws are fitted with retract on the return stroke to allow feeding of deformed or bent materials and to prevent scoring.
- The vice feeding system has been designed to reduce the size of the wastage.
- Blade material detection.
- Motion detector to shut the machine down in case of blade breakage or jam.
- The 10 inch CNC controller screen can also be programed off line.
- Hydraulic blade tension is fitted to ensure the correct tension at all times which helps to increase blade life and optimum cutting pressure.
- Variable blade speed by inverter.
- Removable coolant tank for easy cleaning.
- Automatic positioning of guide arm.
- Power drive blade brush to ensure that all chips are removed from the blade to maximize blade life.
- Auto-chip conveyor.
- LED work light.
- Top clamping. (option)
Specification
How Does the BS400S CNC Full-Servo Band Saw Achieve High Precision and Low Remnant Cutting?
Answer: The BS400S replaces hydraulics with a full servo motor drive, combined with ball screw feeding and CNC touch control, to deliver 400mm × 400mm cutting capacity, just 25mm remnant, and ±0.1° angle positioning accuracy. It is engineered for semiconductor equipment parts, precision molds, and structural steel fabrication.
BS400S CNC Full-Servo Band Saw is Big Stone Machinery's flagship precision metal cutting machine. Using full servo motor drive instead of conventional hydraulics, it offers 400mm × 400mm cutting capacity, minimal remnant material, and a fully enclosed safety design — the ideal solution for semiconductor parts, precision molds, and structural steel processing.
Cutting Capacity: 400mm (W) × 400mm (H)
Technical Overview:
The BS400S CNC Servo Band Saw represents a breakthrough in precision metal cutting. The entire machine uses a full servo motor drive system instead of traditional hydraulic motors, completely eliminating the thermal drift and oil leakage common in hydraulic systems. By perfectly combining servo motors with high-precision ball screws, the BS400S achieves exceptionally accurate feed control and dramatically reduces cutting remnants, boosting material utilization. Its fully enclosed body design not only significantly reduces noise but also provides the highest level of operator safety.
BS400S CNC Servo Band Saw — Full Servo Drive and Ultimate Precision Cutting Solution
Full Servo Drive: Precision Control and Eco Efficiency
Unlike traditional band saws that use hydraulic motors, the BS400S is fully servo motor controlled. This technical advantage means machine movements receive more direct, precise feedback and positioning:
- Extreme Accuracy: The servo feed system with ball screws guarantees consistent cut length every time.
- Low Remnant Design: Optimized servo feed logic dramatically shortens the end remnant, saving expensive steel costs.
- No Hydraulic Pollution: No hydraulic oil changes, no leakage risk, keeping the shop clean and reducing maintenance.
High-Efficiency Automatic Metal Cutting
The BS400S is designed for steel, stainless steel, and aluminum alloys, with a cutting range of 400mm × 400mm. Its blade material detection function automatically adjusts servo cutting parameters based on material hardness, extending blade life and ensuring a flat, smooth cut surface.
Fully Enclosed Structure and Intelligent Control System
Safety and ease of operation are central to the BS400S. Equipped with a 10‑inch CNC touchscreen, it supports intuitive programming and automatic guide arm positioning, drastically shortening changeover times.
- 360° Safety Protection: The enclosed body structure effectively blocks cutting noise and spray, ensuring operator safety.
- Automatic Protection: If the blade breaks or a foreign object is detected, the servo system immediately triggers a shutdown to prevent damage.
- Versatile Clamping: An optional top vise provides stable clamping for bundled materials, preventing slippage during cutting.
| Model | BS400S | |
| Cutting Capacity (mm) | ●90° Round | Ø400 |
| ■90° Rectangular | 400 × 400 (H×W) | |
| Bundle Cutting Range (mm) | Height | 20 - 300 |
| Width | 150 - 300 | |
| Min. Auto-Feed Cutting Length (mm) | 10 | |
| Min. Auto-Feed Remnant Length (mm) | 25 | |
| Min. Cutting Diameter (mm) | 5 | |
| Motor | Blade Motor | 5.75 kW |
| Hydraulic Motor | 1.5 kW | |
| Coolant Motor | 0.2 kW | |
| Blade Size (mm) | 5300 × 41 × 1.3 | |
| Blade Speed (m/min) | 20 - 150 | |
| Single Feed Stroke (mm) | 600 | |
| Working Height (mm) | 750 | |
| Machine Dimensions (mm) | Length | 1750 |
| Width | 3000 | |
| Height | 1920 | |
| Net Weight (kg) | 3000 | |
Product Features at a Glance
- Ball screw and servo motor control for automatic material feeding and high-precision cutting.
- Fully enclosed structure for safety, noise reduction, and easy cleaning.
- Independent feed bed and clamping module for stable processing of irregular or bent materials.
- Cushioned vice and clamp design prevents scratches and material deformation.
- Optimized clamping system reduces waste and increases material utilization.
- Automatic blade material detection enhances cut consistency and blade life.
- Built-in blade protection automatically stops the machine in case of blade anomaly.
- 10‑inch CNC touchscreen with offline programming and auto guide arm positioning.
- Intuitive, user-friendly interface for quick setup and production flexibility.
- Optional top vice clamp for stronger gripping and wider application range.
BS400S Application Industries
BS400S CNC Full-Servo Band Saw — FAQ
BS400S Quick Setup Guide in 3 Steps
Set Cutting Parameters
On the 10‑inch CNC touchscreen, input material type, dimensions, and cut length. The system automatically suggests the best blade speed and feed rate.
Load Workpiece and Auto-Position
Place the steel on the feed bed; the servo system drives the ball screws to position the workpiece, and the guide arm moves to the optimal clamping position.
Start Fully Automatic Cycle
Press the start button — the BS400S will automatically complete feeding, clamping, cutting, and remnant ejection without any manual intervention.
Customer Reviews
Excellent Value, Perfect for SMEs
Initially worried about budget, but after purchase productivity jumped 35%. Simple maintenance and Big Stone's tech support responds within 24 hours. Highly recommended!
Full Servo Accuracy is Impressive
Replaced a 10‑year‑old hydraulic machine. The BS400S servo feed precision is on a completely different level — remnant dropped from 80mm to 25mm. Paid for itself in six months.
Enclosed Design Is the Biggest Highlight
The fully enclosed body drastically reduced shop noise and improved safety. Only suggestion: initial setup takes some familiarization, but engineers provide on‑site guidance.
Trade Information
- Country of Origin : Taiwan
- Main Export Markets : all over the world
- Payment Details :
- Payment Terms : T/T
-
Minimum Order : 1 Units
Order Quantity Limit : 1 Units - Others : bandsaw machine
- Delivery Details :
- Lead Time : 60 Days
- FOB Port : TWKEE
