CNC Deep Hole Skiving & Roller Burnishing Machine – Precision, Efficiency, Versatility

CNC Deep Hole Skiving & Roller Burnishing Machine Description

The CNC deep hole skiving and roller burnishing machine is the ideal solution for finishing deep hole components. Designed for compound machining, it integrates boring, skiving, and roller burnishing in one machine. Perfect for hydraulic cylinders, spindle bores, cylinder bores, and cooling channels.

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Key Specifications

Parameter	Value
Machined hole diameter	Φ38 – Φ250 mm
Maximum machining depth	3000 mm
Workpiece OD range	Φ48 – Φ350 mm
Workpiece length range	200 – 3000 mm
Headstock speed range	20 – 200 r/min
Boring bar box speed range	40 – 1200 r/min
Headstock motor power	30 kW
Boring bar box motor power	45 kW
Total rated power	approx. 125 kW
Machine load capacity	3 tons
Cooling max pressure	16 bar
Cooling flow range	300 – 900 L/min
Filtration accuracy	50 μm
Hydraulic max pressure	100 bar

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CNC Deep Hole Skiving & Roller Burnishing Machining Precision

Aperture accuracy: IT7 – IT9

Surface roughness after rolling: Ra0.05 – 0.4 μm

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CNC Deep Hole Skiving & Roller Burnishing Key Features

Box-type cast iron construction – FEA optimized for rigidity

Double normalizing treatment – long-term accuracy stability

Three processing modes – workpiece/tool rotation combinations

Single-pass skiving & roller burnishing – reduces cycle time

Ball screw Z1 drive – smooth, high-efficiency feed

Trapezoidal screw Z2 with self-lock – secure clamping

Servo self-centering clamping – adjustable force and speed

Three-stage cooling filtration – 50μm final filtration

Siemens 828D CNC control – reliable and user-friendly

Independent lubrication for gears and bearings

Mechanical spindle locks with electrical interlocks

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CNC Deep Hole Skiving & Roller Burnishing Processing Technology

Workpiece Type	Diameter Range	Tool Method
Hot-rolled steel pipe	Φ80 – Φ250 mm	Hydraulic boring, skiving & rolling in one pass
Cold-drawn steel pipe	Φ38 – Φ250 mm	Pneumatic or hydraulic skiving & rolling in one pass

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CNC Deep Hole Skiving & Roller Burnishing Main Components

Component	Description
Bed	Split structure, rectangular quenched guideways, ball screw Z1, trapezoidal screw Z2
Headstock	30kW motor, 20-200rpm, cone disk clamping, mechanical lock, chip discharge
Workpiece Clamping	Servo-driven, self-centering, interchangeable modules for rotation/fixed modes
Workpiece Carrier	Manual adjustment via handwheel, auxiliary support
Oil Feeder	Core component, 60° cone disk, servo-driven movement
Boring Bar Box	45kW motor, 40-1200rpm, precision gears, independent lubrication, mechanical lock
Boring Bar Bracket	Hook-type, impact-absorbing support sleeve
Cooling System	Above-ground tank, 3-stage filtration, 300-900L/min, 16 bar
Hydraulic System	100 bar, for clamping and tool expansion
Control System	Siemens 828D with cooling-equipped electrical cabinet

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Why Choose CNC Deep Hole Skiving & Roller Burnishing Machine ?

Benefit	Reason
Superior bore finish	Ra0.05–0.4μm after rolling
High accuracy	IT7-IT9 bore tolerance
One-pass finishing	Skiving & rolling combined – reduces cycle time
Versatile processing	Three machining modes
Long-term stability	Double normalizing treatment
High rigidity	Box-type FEA-optimized castings
Smooth feed	Ball screw Z1 drive
Secure clamping	Self-locking trapezoidal screw Z2
Reliable control	Siemens 828D system
Clean operation	50μm three-stage filtration
High power	45kW boring bar box, 30kW headstock

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Typical Applications

Hydraulic cylinder tubes

Spindle bores

Cylinder bores

Cooling channels

Actuator barrels

Precision deep hole components

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