ZLYJ Series Gearbox: An In-Depth Look at the Power Behind Efficient Plastic Machinery

If you're specifying components for plastic machinery, the ZLYJ model is likely a recurring option. But what makes it a preferred choice for manufacturers worldwide? This article provides a detailed exploration of the ZLYJ series' technical advantages and application value.

Core Technical Advantages of the ZLYJ Series Gearbox

1.Hardened & Precision-Ground Gears

Technology: Gears are made from 20CrMnTi alloy steel, carburized and quenched to a surface hardness of HRC 58-62.

Benefit: This extreme hardness provides outstanding resistance to pitting and wear, dramatically extending service life.

Process: Core gears are finished on high-precision grinding machines, consistently achieving AGMA Grade 10 (or ISO 1328 Class 6) accuracy.

Benefit: Higher precision ensures smoother meshing, significantly lower noise, and unparalleled operational reliability.

2.Optimized Housing & Thermal Management

Technology: The housing is made from high-strength cast iron, offering superior rigidity. Strategically placed cooling fins maximize surface area for heat dissipation.

Benefit: Effectively controls temperature rise, ensuring stable lubricant performance and preventing unplanned shutdowns in 24/7 applications like extrusion.

3.High Load Capacity & Transmission Efficiency

Technology: Utilizes multi-stage gear transmission for a wide torque range. Advanced gear profile modification minimizes meshing impact and friction.

Benefit: Transmission efficiency is consistently above 96%, leading to substantial energy savings. The high load capacity ensures absolute safety during the high-torque startup and peak loads common in plastic machinery.

ZLYJ Series in Action: Application Case Studies

1.In Injection Molding Machines:

Role: Drives the screw for plastication.

Requirement: Handles frequent start-stop cycles and cyclic shock loads.

ZLYJ Performance: The high-rigidity housing and hardened gears excel at absorbing shock loads, while smooth operation ensures consistent shot weight and product repeatability.

2.In Single/Twin-Screw Extruders:

Role: Serves as the main drive, providing powerful and steady torque to the screw.

Requirement: Demands constant high torque, low speed, and non-stop operation.

ZLYJ Performance: Superior thermal management and long-life design guarantee production continuity, drastically reducing unplanned downtime.

Competitive Comparison: ZLYJ Series vs. The Market

The Verdict: The ZLYJ series demonstrates clear advantages in the most critical performance, efficiency, and longevity metrics, offering a superior total cost of ownership.

How to Select the Right ZLYJ Gearbox for Your Application

Choosing the correct model depends on your specific operating parameters:

Required Output Torque (Nm or lb-ft)

Output Speed (RPM)

Motor Power and Speed (kW/HP, RPM)

Daily Operating Hours & Load Type (e.g., uniform, moderate shock)

Desired Mounting Configuration (Foot-mounted, Flange-mounted, etc.)

Our engineering team is ready to assist you with a free, no-obligation selection to ensure optimal performance for your machinery.