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Produces super finish surface, with bore tolerance of IT7-IT8
Bore surfaces with Ra 0.05 to 0.2 micron finishes
One-pass process and double-pass process is optional
Surface hardness is increased by approximately 50% after roller burnishing
Demonstration Video On Youtube
I. Introduction
Hydraulic and pneumatic cylinders rely on ultra-smooth surface finish tolerances for operation longevity. The skiving and roller burnishing action passes over the material with skiving knives to create a perfectly round bore. This is followed by rollers that cold-work the surface and compress remaining material left behind from skiving, which creates a residual stress coating. The result is a supremely smooth interior wall with a mirror-like finish. When this process uses reliable machines such as those developed by TechniDrill, the end product extends the life of cylinders.
II. Specification
| Description | Specification |
| Tube ID Range | Φ40mm – Φ300mm |
| Tube Length Range | 500mm – 6000mm |
| Dimension Accuracy | IT7 – IT8 |
| Surface Roughness | Ra =0.03μm – 0.2μm |
| Compatible Tool | Single Pass / Double Pass |
| Tool Driving Method | Hydraulic / Pneumatic |
| Machining Mode | Single Rotation |
III. Components List
| Description | Supplier | Place of Origin |
| CNC Controller | SIEMENS | Germany |
| Main Shaft AC Motor | SIEMENS | Germany |
| Boring Bar Drive Motor | SIEMENS | Germany |
| Pressure Head Drive Motor | SIEMENS | Germany |
| Gear Box Bearing | NSK / FAG | Japan / Germany |
| Main Shaft Bearing | NSK / FAG | Japan / Germany |
| Rotation Connector | DEUBLIN | U.S.A |
| Cutting Fluid Pump | GRUNDFOS | Denmark |
| Pressure Switch | ACT | Japan |
| Lubricator Unit | SHOWA | Japan |
| Electronical Component | OMRON / SCHNEIDER | Japan / France |
| Electric Gauge | TOYO | Japan |
| Seal | NOK | Japan |
IV. Reference
