CNC Double Miter Cutting Band Saws

How Does the Big Stone DMA Series Optimize Structural Steel & Heavy Profile Fabrication?

The Big Stone CNC Double Miter Metal Band Saw Line (DMA Series) covers the 500DMA (600 mm / 23.6 in. hydraulic infeed), 5015DMA (1500 mm / 59.1 in. servo infeed), 5030 / 5050DMA (2500 / 4500 mm / 8.2 / 14.8 ft servo infeed), and 650DMA to 1300DMA (Heavy Dual-Column Gantry 440 × 650 mm to 700 × 1300 mm / 17.3 × 25.6 in. to 27.6 × 51.2 in.). Featuring +60° to -45° (or 90°/left 45°30°/right 45°30°) auto- swivel CNC mitering (0.1° accuracy) and direct roller infeed, the series executes continuous opposite-angle cutting with no workpiece flipping required on 6m–12m (20–40 ft) structural steel. Standard DMA machines include an infeed powered servo roller table of approx. 2300 mm / 90.6 in. (feeder) with optional modular outfeed miter auxiliary tables in 1m, 2m, 3m, and 5m lengths (passive idle roller design). All machines are CE Certified and engineered for high-volume structural steel framing, shipbuilding, and heavy fabrication plants.

📍 Built at Big Stone Hsinchu Plant (4,650 m² / 50,052 sq ft) 🛡️ CE Declaration of Conformity / ISO 14064-1 ⚡ 600mm Hyd. & 1.5m–4.5m Servo Infeed Range 📐 500mm to 1300mm (19.7 in. to 51.2 in.) Cutting Width 🏛️ Double-Column Linear Guideway Gantry Models

Watch Live Cutting: Dual-Column Gantry & Long-Stroke Infeed Demos

HD Live Demonstrations

650DMA~1300DMA Gantry: Heavy structural steel & marine profile cutting

5015DMA Series: 1500 mm (59.1 in.) extended infeed with auto miter

DMA Series Model Comparison & Selection Matrix

Official Catalog Standards (Metric & Imperial / HP)

Model	90° Cutting Capacity	Single Infeed Stroke	Main Motor Power	Best Application
500DMA	320 × 500 mm (12.6 × 19.7 in.) / Ø325 mm (Ø12.8 in.)	600 mm (23.6 in.) Hydraulic	2.25 kW (3.0 HP)	Profiles & tubes under 3 meters (10 ft)
5015DMA	320 × 500 mm (12.6 × 19.7 in.) / Ø325 mm (Ø12.8 in.)	1500 mm (59.1 in. / 4.9 ft) Servo	2.25 kW (3.0 HP)	6m (20 ft) commercial structural beams
5030 / 5050DMA	320 × 500 mm (12.6 × 19.7 in.) / Ø325 mm (Ø12.8 in.)	2500 / 4500 mm (8.2 / 14.8 ft) Servo	2.25 kW (3.0 HP)	6m–12m (20–40 ft) long heavy beams
650DMA ~ 1000DMA	440×650 to 650×1000 mm (17.3×25.6 to 25.6×39.4 in.)	2300 mm (90.6 in. / 7.5 ft) Servo	5.5 to 7.5 kW (7.5 to 10.0 HP)	Double-column gantry, heavy structural H-beams
1300DMA (Heavy Gantry)	700 × 1300 mm (27.6 × 51.2 in.) / Ø760 mm (Ø29.9 in.)	2300 mm (90.6 in. / 7.5 ft) Servo	11.0 kW (15.0 HP)	Heavy H-beams, shipbuilding plates, wind towers

DMA Series Frequently Asked Questions (FAQ)

Q: How to select between 500DMA (600mm), 5015DMA (1.5m), and 5030/5050DMA (2.5/4.5m)?

For parts under 3m (10 ft), the 500DMA (600 mm hydraulic infeed) is the most compact and economical choice. For standard 6m (20 ft) commercial beams, the 5015DMA (1.5m servo infeed) reduces indexing cycles by 60%. For continuous 6m–12m (20–40 ft) structural steel, the 5030DMA (2.5m) or 5050DMA (4.5m) finishes long-stroke infeed in just 1 to 2 strokes, boosting cutting throughput by over 3X.

Q: Pivot / Scissor-type swivel arm (500~5050DMA) vs. Double-Column Gantry frame (650DMA~1300DMA)?

The 500DMA~5050DMA series utilizes a heavy-duty pivot / scissor-type swivel arm optimized for structural profiles up to 500 mm (19.7 in.) wide (H500×320mm). The 650DMA~1300DMA series utilizes a symmetrical double-column linear guideway gantry frame engineered for extra-wide profiles from 650 mm to 1300 mm (25.6 in. to 51.2 in.) (1300DMA: 700×1300mm / 27. 6×51.2 in.), heavy shipbuilding plates, wind power flanges, and maximum vibration damping.

Q: How does the DMA series eliminate workpiece flipping on opposite angle cuts?

Automatic bidirectional swiveling (+60° to -45° or 90°/left 45°30°/right 45°30°) rotates the saw bow automatically after the initial cut while the beam advances straight along the powered feeder, eliminating workpiece flipping delays, material turnover bottlenecks, and shop floor hazards.

Q: Are infeed and outfeed roller tables included as standard on DMA series band saws?

Standard DMA machines include an infeed powered servo roller table of approx. 2300 mm / 90.6 in. (feeder). Standard DMA machines have NO outfeed roller table included by default. The outfeed miter auxiliary roller table is an optional accessory available in 1m, 2m, 3m, and 5m (3.3, 6.6, 9.8, 16.4 ft) lengths (strictly non-motorized passive idle roller design) based on customer shop layout and requirements.

Need DMA Turnkey Line Planning, Catalog Downloads, or Sample Test Cuts? Direct from Big Stone Hsinchu plant. Receive customized layout proposals and rapid factory technical consultation.

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