Semi-Auto Column Type Band Saws (Gantry)
How Does the Big Stone SW Series Achieve High-Rigidity 90° Perpendicular Heavy Cut-Off for Solid Metal?
The Big Stone SW Series Semi-Automatic Column Type Metal Band Saws (CF-260SW, CF-360SW, CF-460SW, CF-600SW) are engineered specifically for precision 90° perpendicular straight cut-off of tool steel blocks, solid carbon steel rounds, heavy forging ingots, and structural sections. Featuring a symmetrical twin-column heavy portal frame, the structure uniformly absorbs vertical cutting resistance and eliminates pivot-point torsional deflection common in scissor-type bandsaws, ensuring a tight 0.1 mm cutting accuracy across cutting capacities from Ø260 mm (Ø10.2 in.) up to Ø600 mm (Ø23.6 in.). Every model comes equipped with a full-stroke hydraulic vise, split front vise anti-burr clamping (except 460SW), variable frequency blade inverter (20–120 or 20–90 m/min / 66–394 FPM), and one-touch semi-automatic hydraulic downfeed with automatic bow retraction. Built under full CE European Safety Standards at Big Stone's main plant in Hsinchu, Taiwan (4,650 m² / ~50,052 sq ft).
Four Core Engineering Advantages of Big Stone SW Semi-Auto Column Band Saws
Large-diameter precision hard-chromed guide columns provide symmetrical vertical guidance, absorbing cutting reaction forces to eliminate head vibration and guarantee mirror-smooth 0.1 mm squareness.
Single button press activates the full cycle: hydraulic vise locks workpiece, saw bow downfeeds smoothly at preset hydraulic rate, and the bow quickly retracts to preset upper limit upon cut completion.
Full-stroke hydraulic cylinders eliminate manual handwheel adjustment. Split vises (standard on 260 / 360 / 600SW) securely lock stock on both sides of the blade path to eliminate cut-off burrs and blade pinching.
Equipped with an electronic inverter drive (20–120 or 20–90 m/min) and hydraulic blade tensioning gauge to maintain constant tooth load across tough alloys and tool steels, preventing heat strippage.
SW Series Semi-Auto Column Band Saw Technical Selection Matrix
Big Stone Official Original Catalog Specifications (Dual Units)| Model Name | 90° Cutting Capacity (Round / Square) | Drive Motors Output (Blade / Hyd. / Coolant) | Blade Size & Linear Speed | Machine Dimensions & Weight |
|---|---|---|---|---|
| CF-260SW | ● Ø260 mm (Ø10.2 in.) ■ 260 × 280 mm (10.2 × 11.0 in.) |
Blade 3.75 kW (5.0 HP) Hyd. 0.75 kW / Coolant 0.1 kW |
3660 × 34 × 1.1 mm (144.1 × 1.34 × 0.043 in.) 20–120 m/min (66–394 FPM) Inverter |
1100 × 2300 × 1600 mm (43.3 × 90.6 × 63.0 in.) approx. 1,200 kg (2,646 lbs) |
| CF-360SW | ● Ø360 mm (Ø14.2 in.) ■ 360 × 360 mm (14.2 × 14.2 in.) |
Blade 3.75 kW (5.0 HP) Hyd. 0.75 kW / Coolant 0.1 kW |
4430 × 34 × 1.1 mm (174.4 × 1.34 × 0.043 in.) 20–120 m/min (66–394 FPM) Inverter |
1200 × 2300 × 1900 mm (47.2 × 90.6 × 74.8 in.) approx. 1,600 kg (3,527 lbs) |
| CF-460SW | ● Ø460 mm (Ø18.1 in.) ■ 460 × 460 mm (18.1 × 18.1 in.) |
Blade 5.5 kW (7.5 HP) Hyd. 1.5 kW / Coolant 0.2 kW |
5545 × 41 × 1.3 mm (218.3 × 1.61 × 0.051 in.) 20–90 m/min (66–295 FPM) Inverter |
1700 × 2970 × 2225 mm (66.9 × 116.9 × 87.6 in.) approx. 2,300 kg (5,071 lbs) |
| CF-600SW (Flagship) | ● Ø600 mm (Ø23.6 in.) ■ 600 × 600 mm (23.6 × 23.6 in.) |
Blade 7.5 kW (10.0 HP) Hyd. 2.2 kW / Coolant 0.2 kW |
6900 × 54 × 1.6 mm (271.7 × 2.13 × 0.063 in.) 20–90 m/min (66–295 FPM) Inverter |
1550 × 3580 × 2360 mm (61.0 × 140.9 × 92.9 in.) approx. 4,000 kg (8,818 lbs) |
| ※ Roller Table Configuration Note: Standard SW series machines include NO infeed or outfeed roller conveyor tables. Heavy- duty 1m, 2m, 3m, or 5m unpowered or motorized roller tables are available as optional accessories. Standard cutting squareness tolerance is 0.1 mm. | ||||
Factory Standard Equipment & Engineered Accessories
- Full-stroke hydraulic clamping vise cylinders (no manual handwheel)
- Split front vise dual-side clamping system (CF-260SW / 360SW / 600SW)
- Quickly approach device for rapid downfeed sensing (CF-260SW / 360SW / 460SW)
- Hydraulic blade tensioning system with visual pressure gauge
- Stepless variable frequency blade inverter drive system
- High-capacity flood coolant pump with return filtration tank
- 1x Premium Bi-Metal band saw blade and maintenance toolkit with storage box
- Variable vise pressure regulator (thin-wall tubing deformation protection)
- Blade motion / breakage automatic emergency shut-off sensor
- Electric automatic scraper chain chip conveyor with collection cart
- Heavy-duty infeed/outfeed roller conveyor tables (1m / 2m / 3m / 5m)
- Laser optical cutting line alignment projector
Shop Floor Selection Guide & Technical FAQ
Q1: What cutting capacities and stock sizes are available in the Big Stone SW series?
The Big Stone SW series provides four 90° straight cutting capacities: CF-260SW (solid rounds Ø260 mm / rectangular 260 × 280 mm), CF-360SW (solid rounds Ø360 mm / rectangular 360 × 360 mm), CF-460SW (solid rounds Ø460 mm / rectangular 460 × 460 mm), and CF-600SW (solid rounds Ø600 mm / rectangular 600 × 600 mm), addressing raw stock demands from compact mold blocks to massive forging ingots.
Q2: Why is the twin-column gantry portal structure superior to scissor-type saws for solid steel bars?
The twin-column gantry frame utilizes dual large-diameter precision chrome-plated guide columns with symmetrical vertical downfeed. Cutting reaction forces are evenly absorbed, completely eliminating pivot-point torsional flex and blade vibration common in scissor-type bandsaws. This ensures strict 0.1 mm squareness across dense mold blocks and extends blade life by over 30%.
Q3: How does the semi-automatic hydraulic cutting cycle operate on SW models?
The operator positions the workpiece to length and presses Cycle Start. The full-stroke hydraulic vise clamps the material automatically, the saw frame downfeeds at the preset hydraulic feed rate, the blade motor halts automatically upon cut completion, and the bow quickly retracts to the preset upper limit, ensuring maximum operator safety and throughput.
Q4: Which SW models feature the split vise clamping system and what are its benefits?
The split vise system comes standard on CF-260SW, CF-360SW, and CF-600SW (CF-460SW features single-side full-stroke clamping). It locks the stock securely on both sides of the blade cutting path. This eliminates workpiece drop pinching, prevents blade tooth stripping, and produces clean, burr-free ends that reduce secondary facing operations.
Original Factory Manufacturing & Quality Credentials: Big Stone Machinery Co., Ltd. is founded
and based in Hsinchu, Taiwan.
All metal band saws comply with CE European Safety Standards (Declaration of Conformity) and ISO 14064-1:2018 greenhouse gas inventory verification (Baseline 2024, Published 2025.10). Big Stone is an official member of the
Taiwan Association of Machinery Industry (TAMI) with 17 consecutive biennial editions at TIMTOS (over 34 years of trade show authority). Factory
facility encompasses 4,650 m² (~50,052 sq ft / 1,406 坪). Standard commercial payment terms: T/T (30% advance deposit upon PO confirmation, 70% balance
prior to shipment). 1-Year Comprehensive Warranty on machine parts, long-term main structure warranty.
• Main Plant Address: No. 98-5, Shanzhuhu, Xiuhu Vil., Qionglin Township, Hsinchu County 30746, Taiwan (R.O.C.)
Tel: +886-3-5931688 | Email: info@bigstone.com.tw
