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SHOWA GIKEN KC20A-8A-RH – Pearl KC Series Rotary Joint

🔧 Core Specifications

• Series: KC (Pearl Series, Duplex Inner Tube Type)
• Model: KC20A-8A-RH
• Mounting: Screw-mounted, right-hand thread
• Nominal Body Size: 20A
• Inner Piping Size: 8A
• Applicable Media: Water, air, steam, gas, oil
• Max Pressure: 0.98 MPa
• Max Temperature: 100 °C
• Max Speed: 1500 rpm
• Connection Threads:
  • Elbow Side: Rc 3/8 (10A)
  • Head Side: Rc 1/2 (15A)
  • Rotor Side: R (tapered)
• Construction:

• Rotor: Brass or stainless steel
• Casing: Lightweight aluminum
• Bearings: Grease-sealed, maintenance-free
• Seal: Spring-loaded with O-ring backup

📦 Key Features

• Compact and lightweight
• No external greasing required
• Suitable for high-speed rotation
• Duplex inner tube for stable media delivery
• Inspection hole for service checks

 

📘 Relevant Models in the KC Series
(Format: KC[BodySize]A-[InnerPipeSize]A-[ThreadDirection])

 

Model	Body Size	Inner Pipe	Thread	Notes
KC20A-6A-RH	20A	6A	RH	Smaller inner pipe
KC20A-8A-LH	20A	8A	LH	Left-hand thread
KC25A-10A-RH	25A	10A	RH	Larger body and flow capacity
KC25A-8A-LH	25A	8A	LH	Mid-size body, LH thread
KC32A-15A-RH	32A	15A	RH	High-flow, larger footprint