Our GLL Exhaust Groove Pin adopts innovative structural design: Perfect fusion of functionality and practicality.

Patented exhaust groove design solves industry pain points:

Traditional cylindrical pins are prone to loose assembly or seal failure due to gas stagnation under high pressure or high temperature. Our GLL Exhaust Groove Pin uses precision-machined spiral exhaust grooves to achieve dynamic gas drainage and avoid stress concentration caused by gas accumulation. This design is particularly suitable for scenarios such as hydraulic systems, engine components and mold cooling channels, significantly improving the system's sealing and operating stability.

Integrated internal thread design simplifies installation process:

GLL product has built-in high-precision internal thread holes that can be used directly with bolts or screws without the need for additional sleeves or gaskets. This design not only shortens assembly time, but also reduces the risk of failure by reducing connection nodes. The depth and pitch of the internal thread have been optimized to adapt to a variety of international standard thread specifications (such as M4-M20), meeting cross-industry universal requirements.

GLL uses aviation-grade alloy steel (such as AISI 4140 or 17-4PH stainless steel) as the base material, combined with vacuum heat treatment process, so that the product has the following characteristics:

Tensile strength ≥ 1200MPa, far exceeding ordinary carbon steel pins;

Corrosion resistance reaches 96 hours of salt spray test without rust, suitable for marine engineering and chemical equipment environment;

Operating temperature range -50℃ to 300℃, covering the stringent requirements from polar to high-temperature industrial scenes.

Through the five-axis linkage CNC machine tool and online detection system, GLL controls the cylindricity of the pin within 0.002mm and the surface roughness reaches Ra0.2μm. This level of precision can achieve "blind installation" level interchangeability and significantly reduce the debugging cost in equipment maintenance.

Stability under dynamic load: In vibration tests (frequency 20-2000Hz, acceleration 50g), the looseness rate of the GLL exhaust groove pin is less than 0.05%, which is more than 8 times higher than that of traditional pins. This feature makes it an ideal choice for high-frequency vibration scenarios such as new energy vehicle motors and industrial robot joints.

Self-cleaning and lubrication optimization: The spiral structure of GLL exhaust groove forms a microfluidic effect during rotation, which can automatically discharge impurities and carry lubricants to the contact surface, reducing wear by 60%.

FAQ

Q1: How is the exhaust groove design of GLL different from that of traditional pins?
A: Traditional pins are solid structures, which are prone to loose assembly or seal leakage due to gas stagnation. GLL's patented exhaust groove achieves dynamic gas drainage through spiral grooves, combined with high-precision internal threads, which is both functional and practical, and is especially suitable for high-pressure and high-frequency vibration scenarios.

Q2: Will the exhaust groove design affect the strength of the pin?
A: No. GLL optimizes the depth and angle of the exhaust groove through finite element analysis (FEA) to ensure that the strength of the pin body remains above the DIN standard while venting gas. Laboratory data shows that its dynamic load stability is 8 times higher than that of traditional pins.

Q3: Does the product support customization?
A: Yes. GLL provides full-link customization services.