CF-650DMS
Semi-Auto Double miter cutting metal band saw
The Big Stone CF-650DMS Semi-Automatic Double Miter Band Saw (Double-Column Linear Guideway Gantry Type) is engineered and manufactured at Big Stone's main manufacturing plant in Hsinchu, Taiwan (4,650 m² / ~50,052 sq ft / 1,406 坪). Featuring a large cutting capacity of 440 × 650 mm (17.3" × 25.6") for structural shapes and Ø450 mm (Ø17.7") for solid round stock, it supports bidirectional cutting from Left 90°–30° to Right 90°–45°. Built with a rigid double- column linear guideway elevation system, 0.1° digital angle readout, and 5° blade inclination geometry, it enables heavy 6m to 12m structural H-beams and thick tubing to be mitered with no material turning and no workpiece flipping, eliminating overhead crane turning labor and enhancing shop safety.
Why Do Structural Steel Fabricators Specify CF-650DMS for Bi-Directional H-Beam Mitering?
Twin-Column Linear Guideway Rigidity: The heavy-duty dual columns paired with precision linear guideways dampen cutting harmonics and eliminate downfeed deflection, delivering perpendicular cuts and ripple-free surfaces for zero-gap welding assembly.
Constant Fixed Vise Pivot Datum: The saw bow swivels around a pivot aligned precisely with the fixed vise jaw and cutting line intersection. The workpiece zero reference point remains constant whether mitering Left 30°, 45°, or Right 45°, eliminating repetitive length compensation and cutting calculation errors.
Features
What Core Engineering Features Allow the CF-650DMS to Solve Heavy Structural Sawing Bottlenecks?
Built for structural steel engineering, bridge fabricators, and heavy tube processing, the CF-650DMS integrates heavy cast rigidity with digital precision:
Bi-Directional Wide-Angle Mitering
Supports swiveling from Left 90°–30° to Right 90°–45°. Long 6m to 12m structural steel beams pass straight through with zero material turning or workpiece flipping, streamlining complex truss fabrication.
0.1° Real-Time Digital Angle Readout
Equipped with an industrial rotary encoder and digital display, providing instant 0.1° readings to eliminate manual scale parallax errors and ensure repeatable miter cuts.
Fixed Vise Jaw Pivot Datum
The rotation pivot aligns with the fixed vise datum line. Swiveling angles does not alter the material stop length, completely eliminating repetitive tool realignment.
5° Blade Inclination Geometry
The 5° initial blade tilt allows gradual tooth entry across wide H-beam flanges and flat bars, reducing initial tooth shock load and extending blade life by over 35%.
Double-Column Linear Guideway Gantry
Heavy steel twin columns guided by precision linear rails provide rigid, vibration-free downfeed, ensuring superior squareness without wavy cut surfaces.
Semi-Auto Cut & Auto Bow Return
Upon cut completion, the microswitch triggers the hydraulic circuit to automatically stop the blade and rapid-elevate the saw bow to preset clearance height.
CF-650DMS Technical Specifications Matrix (Dual Units)
Official Big Stone factory catalog standards. All machines undergo 100% geometric alignment and load cutting verification prior to shipment:
| Specification Parameter | CF-650DMS (Double-Column Semi-Auto Double Miter Band Saw) | |
|---|---|---|
| Cutting Capacity (Dual Units) |
● 90° Solid Round Bar | Ø450 mm (Ø17.7") |
| ■ 90° Rectangular / H-Beam (H × W) | 440 × 650 mm (17.3" × 25.6") | |
| ◢ 45° Left Miter (H × W) | 440 × 420 mm (17.3" × 16.5") | |
| ◢ 30° Left Miter (H × W) | 340 × 270 mm (13.4" × 10.6") | |
| ◣ 45° Right Miter (H × W) | 440 × 420 mm (17.3" × 16.5") | |
| ◣ 30° Right Miter (H × W) | 440 × 270 mm (17.3" × 10.6") | |
| Motor Output (kW / HP) |
Main Blade Motor | 3.75 kW (5.0 HP) Inverter Variable Drive |
| Hydraulic System Motor | 0.75 kW (1.0 HP) | |
| Coolant Pump Motor | 0.1 kW (0.13 HP) | |
| Wire Chip Brush Motor | 0.1 kW (0.13 HP) | |
| Blade Dimensions (L × W × T) | 5400 × 41 × 1.3 mm (212.6" × 1.61" × 0.051") | |
| Blade Speed Range (Variable) | 20–90 m/min (66–295 FPM) Inverter Drive | |
| Hydraulic Vise Clamping Range | 60–670 mm (2.4"–26.4") Full-Stroke Hydraulic | |
| Work Table Bed Height | 730 mm (28.7") | |
| Machine Dimensions (L × W × H) |
Length | 1550 mm (61.0") |
| Width | 2900 mm (114.2") | |
| Height | 2200 mm (86.6") | |
| Net Machine Weight | approx. 2,200 kg (4,850 lbs) Heavy Cast Gantry Base | |
| Roller Table Configuration | Standard DMS machines include NO infeed and NO outfeed roller tables. Miter auxiliary roller tables are optional accessories (modular 1m, 2m, 3m, 5m non-motorized passive idle roller design). | |
Standard Factory Equipment
- Variable Frequency Blade Inverter (20–90 m/min / 66–295 FPM)
- Hydraulic Automatic Blade Tension Control System
- High-Precision 0.1° Digital Angle Display Unit
- Precision Laser Line Alignment Projector
- Hydraulic Vise Pressure Relief Valve (Thin-Wall Tube Protection)
- High-Volume Flood Coolant System
- 1x Bi-Metal Blade (5400 × 41 × 1.3 mm) & Toolkit
Optional Upgrades & Accessories
- Micro-Mist MQL Clean Lubrication Unit (Hydraulic Spray Mist)
- Hydraulic Top Nesting Clamps (Bundle / Angle Iron Sawing)
- Extended Height Vise Jaws (Tall Material Stacks)
- 1m / 2m / 3m / 5m Heavy-Duty Idle Roller Tables (Non-Motorized)
- Digital Length Stop Stopper & Passive Auxiliary Stands
How to Operate the CF-650DMS for Rapid H-Beam Dual-Miter Sawing in 3 Steps
Standard shop operational procedure on the CF-650DMS utilizing digital angle setting, hydraulic clamping, and semi-auto cycling:
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1
Step 1 – Set Miter Angle via 0.1° Digital Display
Release the hydraulic angle locking lever, rotate the saw bow to the target angle (Left 90°–30° or Right 90°–45°), observe the 0.1° digital readout, and relock the lever.
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2
Step 2 – Position Workpiece & Clamp Hydraulic Vise
Advance the H-beam against the fixed vise jaw datum (cutting origin remains fixed), verify cut length with laser projector, and engage full-stroke hydraulic clamping.
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3
Step 3 – Set Blade Speed & Initiate Semi-Auto Cycle
Adjust blade speed (20–90 m/min / 66–295 FPM) according to steel alloy and press Cycle Start. The saw bow descends, severs the material, stops, and rapid-elevates to preset clearance height.
Specification
CF-650DMS Live Demonstration Video & Bi-Directional Swiveling Operation
Watch the CF-650DMS demonstrate 0.1° digital angle positioning, dual-miter flexibility, and vibration-free H-beam sawing.
How to Perform 4-Phase Preventive Maintenance on the CF-650DMS for 10-Year Precision
Big Stone official four-phase preventive maintenance protocol for dual-column bandsaws:
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1
Daily Routine
Verify hydraulic blade tension gauge rests in the green zone before startup, inspect tungsten carbide blade guides and wire chip brush, and replenish coolant levels.
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2
Weekly Inspection
Clear metal chips from linear guideway surfaces and turntable grooves, inspect central lubrication oil reservoir, and refill slideway lubricant as needed.
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3
Monthly Calibration
Verify 0.1° digital angle readout accuracy against master angle blocks at 0° and 45°, inspect vise gib clearance, and apply fresh grease.
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4
Quarterly Maintenance
Replace hydraulic fluid, clean coolant reservoir filtration screens, and inspect drive belt tension and electrical terminal tightness.
Verified Field Customer Reviews
Bi-Directional Mitering with No Workpiece Flipping Saves Massive Labor
"Our plant cuts dozens of 500mm H-beams daily. Previously, mitering opposite ends required turning 12m beams with overhead cranes. With Big Stone's CF-650DMS, the saw bow swivels effortlessly, 0.1° digital readout is pinpoint accurate, and cuts are completely square for instant welding assembly without grinding."
Twin-Column Linear Guideway Frame Delivers Exceptional Vibration Dampening
"The dual-column construction is rock solid. When cutting 400mm thick-wall seamless tubing, downfeed is smooth without the resonance of older scissor saws. Inverter speed control and 5° blade tilt extended blade life by 40%. The ROI on this machine has been extraordinary."
Original Factory Manufacturing & Quality Standards: Big Stone Machinery Co., Ltd. is founded
and based in Hsinchu, Taiwan (Plant area: 4,650 m² / ~50,052 sq ft / 1,406 坪). All metal band saws comply with CE European
Safety Standards, verified by ISO 14064-1:2018 greenhouse gas inventory standards, official Member of the Taiwan
Association of Machinery Industry (TAMI), with 17 consecutive editions of TIMTOS exhibition authority. Machines support ASTM A36/A572, JIS SS400/SM490,
and EN10025 S235/S355 structural steel sawing.
• Direct Factory Contact: +886-3-5931688 | Email: info@bigstone.com.tw |
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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
