PRODUCTS
Nitto Style Quick Coupling and Plug Connector | 8523 Q series
8521-8524 Series: Nitto Style Quick Coupling and Plug Connector
- Embout rapide
- Szybkie złącze
- Schnellverbinder/ Schnellkupplungen
- Conectores rápidos/ Cngate rápido
- Cople Rapido/Acople Rapido
- موصل سريع
- ตัวเชื่อมต่อด่วน
- 快速接頭
- Quick Disconnect Coupling/ Quick Release Coupler (QRC)/ Quick Disconnecto
- Engate rápido para ar comprimido
- Druckluftkupplungen
- Stecknippel
- Stecktüllen
- Schnellverschluss-Kupplungen
- Фитинг Муфта/ Фитинг Штуцер
- Connettore aria ad attacco rapido
- Raccordi per aria compressa
- Raccords rapides
- Raccords et embouts
- Trykluft koblinger og nipler
- Snabbkopplingar och nipple
- أداة تقرن / مقرنة /カプラー / カプラ / ハイカプラ / 空气用快速接头/相容接頭
Nitto Style Quick Coupling and Plug Connector (8521-8524 Series) provides the most reliable connection for Japanese-standard (Regular) pneumatic profiles. This series is optimized for high-speed tool changes and consistent torque delivery in automotive and assembly environments.
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Nitto Interchangeability: Seamlessly fits regular Japanese-profile plugs, preventing pressure drops and expensive air leaks.
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Industrial Integrity: Forged to handle 1.5MPa (15kgf/cm²), making it ideal for high-impact pneumatic tools.
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Rugged Durability: Designed for high-cycle industrial use with an operational temperature range of -20°C to +80°C.
Available Item Numbers:
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Couplers (Q): 8521-2Q, 8521-25Q, 8521-3Q, 8521-4Q | 8522-2Q, 8522-3Q, 8522-4Q | 8523-2Q, 8523-3Q, 8523-4Q | 8524-2Q, 8524-3Q, 8524-4Q
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Plugs (P): 8521-2P, 8521-25P, 8521-3P, 8521-4P | 8522-2P, 8522-3P, 8522-4P | 8523-2P, 8523-3P, 8523-4P | 8524-2P, 8524-3P, 8524-4P
| ITEM NO. | SIZE |  g |  |  |
|---|---|---|---|---|
| 8521-2Q | ¼" HOSE | 94 | 5 | 200 |
| 8521-25Q | ⁵ᐟ₁₆" HOSE | 98 | 5 | 200 |
| 8521-3Q | ⅜" HOSE | 99 | 5 | 200 |
| 8521-4Q | ½" HOSE | 106 | 5 | 200 |
| 8522-2Q | ¼" G | 96 | 5 | 200 |
| 8522-3Q | ⅜" G | 97 | 5 | 200 |
| 8522-4Q | ½" G | 104 | 5 | 200 |
| 8523-2Q | ¼" PT | 94 | 5 | 200 |
| 8523-3Q | ⅜" PT | 98 | 5 | 200 |
| 8523-4Q | ½" PT | 114 | 5 | 200 |
| 8524-2Q |  5x8mm | 101 | 5 | 200 |
| 8524-3Q | 6.5x10mm | 104 | 5 | 200 |
| 8524-4Q | 8x12mm | 119 | 5 | 200 |
| MAXIMUM PRESSURE 15kgf/cm2 (1.5MPa) | TEMPERATURE -20℃~+80℃ | |||
| ITEM NO. | SIZE | g | | |
|---|---|---|---|---|
| 8521-2P | ¼" HOSE | 25 | 10 | 400 |
| 8521-25P | ⁵ᐟ₁₆" HOSE | 30 | 10 | 400 |
| 8521-3P | ⅜" HOSE | 33 | 10 | 400 |
| 8521-4P | ½" HOSE | 36 | 10 | 400 |
| 8522-2P | ¼" G | 31 | 10 | 400 |
| 8522-3P | ⅜" G | 40 | 10 | 400 |
| 8522-4P | ½" G | 51 | 10 | 400 |
| 8523-2P | ¼" PT | 38 | 10 | 400 |
| 8523-3P | ⅜" PT | 42 | 10 | 400 |
| 8523-4P | ½" PT | 55 | 10 | 400 |
| 8524-2P | 5x8mm | 32 | 10 | 400 |
| 8524-3P | 6.5x10mm | 33 | 10 | 400 |
| 8524-4P | 8x12mm | 54 | 10 | 400 |
| MAXIMUM PRESSURE 15kgf/cm2 (1.5MPa) | TEMPERATURE -20℃~+80℃ | |||
Feature
High-Flow Efficiency & One-Handed Operation
The Quick Coupling and Plug Connector is built for maximum workshop productivity:
- Precision Ball-Locking Mechanism: The Quick Coupling and Plug Connector features a multi-ball locking system that provides a 360° secure grip on the plug. This prevents accidental disconnection while allowing the hose to rotate freely, reducing hose kinking and technician fatigue.
- Optimized Internal Airflow: Engineered with high-flow internal valves, the Quick Coupling and Plug Connector minimizes pressure drops between the compressor and the tool. This ensures that impact wrenches and spray guns operate at peak factory-rated performance.
- Corrosion-Resistant Industrial Finish: Every Quick Coupling and Plug Connector is treated with a specialized chrome or zinc coating, providing superior protection against the moisture and oil-rich environments typical of industrial air lines.
B2B Procurement & System Standardization
- Universal Interchangeability: The Quick Coupling and Plug Connector series is designed to be compatible with major industrial profiles (Nitto, ISO, or Universal types), allowing for seamless integration into existing plant setups without replacing all current fittings.
- Leak-Free Seal Integrity: Featuring high-grade Nitrile (NBR) or Viton seals, the Quick Coupling and Plug Connector prevents costly air leaks, significantly reducing energy consumption and compressor wear-and-tear.
- Heavy-Duty Construction: Forged from hardened steel or solid brass, these connectors resist the crushing and impact damage common in heavy-duty automotive bays and construction sites.
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