The J 1508 is a Chinese Mechanical Industry Standard (JB/T) that specifies the technical requirements, dimensions, testing methods, and classifications for a specific type of worm drive hose clamp. In simple terms, it is the Chinese standard equivalent to what is commonly known internationally as a worm gear hose clamp or a band clamp.
W2 perforated band worm drive hose clamp is one type of J1508 hose clamps. It is a specific, high-quality type of worm gear clamp recognized and standardized internationally. The "W2" means that material is Hosing and band stainless steel 201 or 301, screw carbon steel with zinc/nickel plated. It is considered a premium, heavy-duty clamp and is one of the most common and reliable types used globally for securing hoses in high-pressure and high-vibration environments.
Key Features of J 1508 hose clamps:
Worm Drive Mechanism: This is the defining feature. The clamp consists of a perforated stainless steel band and a housing that contains a worm gear. A screw (the worm) is turned, which engages with the gear teeth on the band, allowing for:
Even Circumferential Pressure: The clamp tightens uniformly around the hose, providing a secure, leak-proof seal.
High Clamping Force: The mechanical advantage of the worm gear allows for very high clamping force to be applied.
Self-Locking: The mechanism is inherently self-locking, meaning it resists loosening under vibration, which is critical in automotive and industrial applications.
Design Advantages:
Even Pressure Distribution: The design provides a uniform 360-degree sealing pressure around the hose, preventing leaks.
Exceptional Vibration Resistance: The positive engagement between the screw and the perforated band makes it virtually impossible for the clamp to loosen under vibration, a critical feature in automotive, marine, and industrial applications.
High Clamping Force: It can achieve very high clamping forces without damaging the band or slipping, making it suitable for pressurized systems.
Reusable: It can be easily loosened, repositioned, and re-tightened multiple times without losing its clamping ability.
Production workshop of J 1508 hose clamps
