Metric Compression Union Cross - Centralized Grease Line Fittings

Our Metric Compression Union Cross is the industry standard for distributing lubricants safely through high-frequency automatic lubrication and centralized grease systems. Engineered with a perfectly symmetric 4-way configuration, this equal cross union connects four separate metric lines of the identical outer diameter. By routing fluid uniformly along a single plane, it eliminates structural fluid restrictions, prevents pressure drops, and coordinates grease delivery to progressive distribution blocks.

As a high-volume B2B manufacturer and global OEM supplier, we construct our grease line compression fittings on automated multi-axis precision lathes to guarantee flawless internal boring and exact multi-directional alignment across all four entry ports. Every production lot is subject to rigorous quality control auditing to ensure structural stability under the severe, pulsing pressures common in automated lubrication networks.

Core Technical Blueprint & Symmetric Engineering

• Optimized for LL Series Networks: Purpose-built for the Extra Light (LL) Series footprint, this 4-way union handles operating thresholds up to 100 bar, aligning seamlessly with the pressure boundaries of commercial grease lines (machined for small-diameter tubing from 4mm to 12mm). Its minimized mass and compact profile ensure easy installation inside crowded machinery panels and chassis channels.

• Symmetric Equal Cross Design: All four entry points feature identical 24° internal cone tube seats machined to the same metric specifications. This complete symmetry eliminates the need for expensive adapters or mixed connectors, allowing engineers to split fluid lines uniformly with a single, standardized component.

  • Identical Metric Connections: Integrates directly with standard metric lubrication tubing loops globally, ensuring an exact, localized fit without line modification.

Application & Compliance Standards

• Quadruple Bite Sealing Integrity: Tightening the four compression nuts drives the specialized cutting rings forward into the body seats, forcing them to bite cleanly into the exterior surface of the copper, steel, or high-pressure nylon tubing. This balanced mechanical connection creates an unyielding seal that easily withstands high industrial vibrations, continuous machine cycling, and pressure shocks.

• Global Interchangeability: Manufactured in strict conformity with ISO 8434-1 and DIN 2353 extra-light guidelines. These 4-way cross unions offer complete, drop-in compatibility with leading international fluid-handling brands. They serve as the trusted default choice for commercial vehicle chassis, wind turbine bearings, progressive distribution blocks, heavy mining machinery, and automated industrial assembly systems.