ZSY Series Hardened Cylindrical Gear Reducer parallel-shaft, single-stage, hardened helical gear

1. Product Introduction

The ZSY series is a parallel-shaft, single-stage, hardened helical gear reducer. It is classified as a medium-duty industrial gearbox, designed and manufactured in China according to the standard JB/T8853-2001. Renowned for its high load capacity, high transmission efficiency, and reliable operation, this series is a core component in numerous industrial drive systems.

The name "ZSY" has specific meanings:

• Z: Stands for "Zhu" (Cylindrical) Gear.

• S: Stands for "San" (Three-Stage). (Note: While the name implies three-stage, ZSY typically refers to single-stage units. The naming convention is historical and often associated with the center distance group).

• Y: Stands for "Ying" (Hardened) Tooth Surface.

The gears are made from high-quality alloy steel through carburizing, quenching, and grinding processes. This results in a high tooth surface hardness (HRC58-62) and high precision (Grade 6 per GB/T10095), achieving a compact size, light weight, and high torque output.

2. Key Advantages & Features

• High Load Capacity: The hardened and ground gears, combined with a high-strength cast iron housing, enable it to withstand heavy loads and shock loads.

• High Transmission Efficiency: Single-stage efficiency can reach over 98%, offering significant energy savings.

• Long Service Life: Precision gear machining and high-quality bearings ensure a longer operational life and lower failure rates.

• Smooth Operation & Low Noise: The helical gear design and grinding process guarantee smooth transmission with minimal vibration and noise.

• High Versatility & Easy Maintenance: Standardized design simplifies selection and interchangeability. Compact structure, multiple mounting options (foot-mounted, flange-mounted, etc.), and easy access facilitate maintenance.

• Excellent Sealing Performance: Advanced sealing structures and high-performance seals effectively prevent oil leakage.

3. Main Technical Parameters

• Center Distance (a): Standard sizes range from 160mm to 800mm (e.g., 160, 180, 200, 224, 250, 280, 315, 355, 400, 450, 500, 560, 630, 710, 800).

• Ratio (i): Nominal ratio range for a single stage is approximately 1.25 ~ 6.3. The actual available range depends on the manufacturer's catalog.

• Power (P): Covers a very wide range, from a few kilowatts to several thousand kilowatts (e.g., up to 5000kW or more, depending on center distance and ratio).

• Output Torque (T): Ranges from several kilo Newton-meters to hundreds of kilo Newton-meters (e.g., up to 800 kNm or higher).

• Mounting Configurations: Primarily Foot-mounted (ZDZ type), Flange-mounted (ZDF type), and Torque arm mounted (ZDS type).

(Note: The above parameters are typical ranges. Exact values must be confirmed with the official selection guide from the manufacturer.)

4. Typical Applications

The ZSY series is a "workhorse" in heavy industries, widely used in:

• Conveying Equipment: Belt conveyors, bucket elevators, scraper conveyors.

• Metallurgical Machinery: Rolling mills, straightening machines, wire rod mills.

• Mining Machinery: Crushers, ball mills, coal mills.

• Chemical Equipment: Large agitators, reactors.

• Building Material Industry: Cement mills, rotary kilns.

• Port Machinery: Ship unloaders, stackers and reclaimers.

• Water Conservancy Projects: Hoists and gate lifts.