CNC Billet Cutting Saw -JBS-850

Billet Cutting saw

The CNC cutting saw JBS-850 is built for precision billet processing. Its horizontal circular cold saw is mounted on a concrete-structured frame that absorbs vibration and resists deformation. Dual horizontal guide rails and a hydraulic damping system ensure stable, accurate cutting. Automatic separation of inlet and outlet fixtures prevents blade collisions during operation.

This metal cutting saw is equipped with a SIEMENS PLC system for fast setup and intuitive control. Operators can choose between automatic, semi-automatic, and manual modes. The system stores key pipe data—such as blank diameter, current, and sawing parameters—for efficient recall and repeatable performance.

Internally, the machine features a gear-driven anti-backlash transmission and spline-connected blade flange for smooth torque delivery. Vertical clamping is handled by fixed and floating clamps with hydraulic actuation.

An AC servo motor and ball screw drive the feed system, while a chain-type conveyor removes chips efficiently. The JBS-850 performs reliably as a log cutting saw, blank cutting saw, and cnc cutting saw in high-volume, high-precision applications.


Composition of the Billet Cutting Machine

The billet cuting saw machine mainly consists of the following Parts

Cut Saw Machine

The main machine is composed of the following parts: saw tool box (including pulley), main transmission device, slide feed device, bed base, etc

Hydraulic System

The hydraulic station for the sawing machine consists of a motor, hydraulic pump, heater, water cooling and oil level indicating device, oil tank, valve stand, etc., equipped with functions such as oil temperature control, oil level monitoring and pressure alarm. The designed operating range for the hydraulic system is between +5°C to +45°C while utilizing a water cooling system to maintain the hydraulic oil temperature within 0°C to 35°C.

Air Cooling System

The main function of the air cooling system is to cool the saw blade and the cutting area. It is composed of pipe cooler, nozzle, pipe, etc.
The air is cooled through the pipeline cooler to reduce the temperature of the teeth and disk body, improve the service life of the saw blade and reduce the equipment load.

Centralized lubricating system

The central lubrication system is mainly used for intermittent and accurate oil dose lubrication of lubricating points such as guide rail, ball screw and nut pair. The nominal pressure of the lubrication pump is usually 2Mpa, the power is 0.02Kw, the flow rate is 0.15L/min, and the tank capacity is 4L

Control System

The Billet saw and table control system is operated by Siemens’ cutting-edge S7-1500 control system, which is integrated with Siemens’ state-of-the-art drive system and feed servo motor. It features a 10.4-inch touch screen with vibrant colors and high resolution, providing an advanced man-machine interface.

Auxiliary Equipment

The auxiliary equipment mainly consists of a magnetic sawdust chain, a measuring mechanism with a feeding trolley, and a saw blade changing device consisting of a cantilever hoist and an electric hoist


Specification Of JBS -850 Billet Cutting Saw

ItemsUnitSpecifications
Performance
Processed Billet Dia RangemmΦ150mm 、 Φ180mm 、 Φ200mm
Max Process Billet Lengthmm12000
Max Measuring Fixed Lengthmm-4500
Spindle
Spindle Rotating Patterncontinuous variable transmission
Overall Ratio29.859
Spindle Motor Powerkw55
Saw Blade Diamm830
Pressure Plate Flange Diamm340
Feeding (X)
X Axis Travelmm320
X Axis Ball Screw (Dia x Lead)mm63×10
X Axis Servo Motorkw1Fk7108 8kw
Fast Surface Speedmm/min6000
Clamping System
Drive PatternHydraulic
Vertical jaw travelmm320
Horizontal jaw travelmm50
Clamping ForceKN35-55 KN (2 sets)
Travel between feeding and discharging Clamp Fitsmm5
Hydraulic System
Servo Motor PowerKw22
Hydraulic Pump Flow L/min105
Working PressureBar120
Oil Tank CapacityL600
Centralized Lubricating System
SizeAMO-II-150S
Motorw20w 220v/50HZ
Hydraulic Pump FlowL/ Min0.15
Working PressureBar20
Oil Tank CapacityL4
Air Cooling System
Air FlowNM3/h300
Working PressureBar5-6 Bar
Chain Chip Conveyer System
Distance between the chip outlet and the groundmm1000
Conveying Speedm/min2.5
MotorKw0.55kw 380 v 50 Hz
Control System
NC SystemSimens Simatic S7-1500
HMITouch Screen 10.4 Inch
Note : The Specificaion on the standard basis , for steel bar cutting , if any detailed requirements , just let us know , we will send you back all the details the first tim

Mechanical Introduction of the Billet Cutting Saw

billet Cutting Saw Box

Circular  Saw Box

The Billet Cutting Saw is a high performance circular saw machine designed for accurate and efficient metal cutting. It handles steel billets, bars, pipes, and rods with ease, making it an essential cold cutting tool for modern manufacturing. This equipment is widely used in the metallurgical industry and steel pipe production.

The machine adopts a horizontal cutting method with carbide circular saw blades, ensuring smooth and precise cuts. Its robust concrete structure absorbs vibration and resists deformation, while double horizontal guideways enhance cutting stability and accuracy.

Powered by a variable frequency motor and belt gear transmission, the Billet Cutting Saw delivers consistent performance and energy efficiency. A Siemens control system ensures easy operation and high productivity. As a result, manufacturers achieve faster production cycles and reduced costs.

Beyond billet cutting, this circular saw machine also serves as a bar cutting machine and pipe cutting machine, offering a versatile solution for multiple metal-cutting applications. Whether you need to process billets, bars, or pipes, our Billet Cutting Saw provides reliability, precision, and efficiency for high-volume production.


The guide mechanism of the cutting saw

Guide Mechanism of Circular saw

The guide mechanism combines a carriage, preloaded roller linear guides, and an auxiliary pressure unit to ensure smooth cutting under heavy loads. The roller guides provide high rigidity and accurate linear motion. The auxiliary unit, with a hydraulic cylinder and wedge block, applies pressure during cutting and retracts during idle to reduce stress and save energy.

Its optimized design aligns the auxiliary rail with the largest saw blade for efficient force transfer and protection. This structure delivers high accuracy, reduces wear, and extends service life. Automatic unloading further lowers energy use and maintenance needs.


The Main Transmission System of the cutting saw

The machine is equipped with a powerful variable frequency motor. Through a combination of belt and gear transmission, the spindle motor drives both the spindle and saw blade at high speed, ensuring stable torque and efficient cutting performance.


Slide feed device

Billet cutting saw Feeding Syste

The servo motor transmits power through a precision reducer, driving the ball screw to move the saw box smoothly along the bed’s guide rail for accurate forward and backward motion.


The servo motor is slowed down by the precision reducer and connected with the ball screw to drive the saw box to move forward and backward along the guide rail of the bed.

(5) The Machine Base

The bed base is the base component of the machine and is of thick plate welded construction and filled with concrete to increase rigidity. After aging treatment, it has high stability and is not easy to deform. The bed is equipped with two rolling guides to guide the movement of the saw box, thus providing good stability.

(6) The Saw blade guide/shock absorber

The machine is equipped with three sets of guiding/damping devices, which are installed on both sides of the saw blade to ensure that there is no vibration when the blade enters and exits during sawing, and to prevent bending vibration during high-speed rotation. The friction plate is used as the liner.

(7) The Clamping Device

Each saw blade is equipped with a set of clamps on both sides, including horizontal and vertical clamps and a clamp base for fastening the tube billet. These clamps are hydraulically fastened and also have an automatic separation function for quick exit of the saw blade, with a separation distance of 5mm.

(8) The Lift roller table at exit

At the discharge position near the edge of the saw, an adjustable height lifting roll of 140°V is provided and hydraulically controlled to ensure that the tube billet can pass through the clamping device without colliding with it.

(9) The Chip cleaning device

A micro-motor drives a brush to clean the sawtooth surface.

(10) The Chip Conveyor Chain (optional )

The chip is discharged from the sawing area through the magnetic structure

(11) The Fixed Measuring Device (optional)

The feeding trolley is installed on the base, and is driven by the servo reduction motor through the rack and pinion to move forward and backward on the base rail. The billet is clamped by the hydraulic clamping arm of the feeding trolley,In order to avoid the collision between the billet and the fixture when the car is fed, the base has the lifting function

(12) The Saw blade replacement device (Optional )

The saw blade replacement is placed next to the saw machine and consists of a cantilever hoist and electric hoist.

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