Cixi Poolke Hydraulic Pneumatic Co., Ltd. is one of the leading manufacturers and suppliers of qzb male hydraulic quick couplings in China. We are committed to providing high quality customized service to global clients. Please feel free to wholesale the newest qzb male hydraulic quick couplings from our factory.
Male Type Hydraulic Quick Couplings – Q/ZB275 Series
The QZB Male Hydraulic Quick Couplings from the POOLKE Q/ZB275 Series are designed for reliable hydraulic connection in industrial equipment and mobile hydraulic systems requiring secure locking, durability and efficient fluid transfer. Featuring an external threaded connection design, this series provides a practical solution for hydraulic applications where compact installation and stable performance are required.
The Q/ZB275 Series is manufactured with black oxide coated steel components and hardened coupling parts to improve wear resistance and mechanical strength. With a durable ball-locking mechanism, precision-machined construction and reliable sealing performance, the QZB Male Hydraulic Quick Couplings provide long service life and dependable operation in demanding hydraulic environments.
Key Features
Male Thread Connection Design
The external thread configuration provides convenient installation and is suitable for hydraulic systems requiring compact and secure threaded connections.
Durable Ball Locking Mechanism
The precision ball-locking structure ensures reliable connection between coupling and nipple, improving safety during hydraulic operation.
Hardened Components for Enhanced Durability
Both sleeve and nipple are hardened to improve resistance against brinelling, mechanical shock and repeated connection cycles.
Reliable Plain Washer Sealing
The plain washer seal structure provides stable sealing performance and helps reduce hydraulic leakage during operation.
Precision Machined Construction
The coupling and nipple are precision machined from solid bar stock to ensure consistent dimensions, strength and reliable performance.
Standardized Hydraulic Connection
Designed according to JB/ZQ4078-97-A requirements, providing reliable compatibility for industrial hydraulic applications.
Applications
The QZB Male Hydraulic Quick Couplings are suitable for:
- Industrial hydraulic systems
- Construction machinery
- Agricultural equipment
- Hydraulic power units
- Mobile hydraulic equipment
- General hydraulic applications
Technical Overview
| Series | Q/ZB275 | Nipple Material | Black Oxide Coated Steel |
| Standard | JB/ZQ4078-97-A | Connection Type | Male Thread |
| Type | Male Type Hydraulic Quick Coupling | Seal Material | NBR |
| Locking Type | Ball Locking | Rated Pressure | 10–34.5 MPa (depending on size) |
| Sealing Type | Plain Washer Seal | Rated Flow | 6.3–630 L/min |
| Material | Black Oxide Coated Steel | Temperature Range | -20°C to +100°C (depending on seal material) |
Interchangeability
Cross-reference examples include:
- JB/ZQ4078-97-A Standard Type
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