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J.B Advantage Techinique Analysis
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1. The mark ① is the mouting hole for cylinder with self-lubricating bearing. It has strict
request of Geometric Tolerance. The roughness is at least Ra3.2μm
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2. The mark ② is SAE port with strict conical surface roughness request and dimensional accuracy request. It
is one of the most typical technique point for hydraulic cylinders
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3.The mark③is the bufferring port for protecting the cylinder. So the
surface roughness,hole roughness and precision are all the the typical
technique of J.B
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4.The mark④ is the connecting part or teminal part for cylinder
bottom. The request roughness is
Ra3.2μm with high request machining tolerance
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5. Besides, there is one
bufferring hole at the bottom of cylinder. Its roughness is request is at
least Ra3.2μm; The dimensional
tolerance must be not more than 0.1mm
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6.J.B
special skill for perfect de-burring
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