Weigao ZQ Cylindrical Gear Decelerators: Involute Tooth & Shaft-Mounted Integration Solution

I. Product Overview

Weigao ZQ Cylindrical Gear Decelerators are classic universal heavy-duty transmission devices integrating optimized involute tooth profile and shaft-mounted integrated structure. As the foundational model of cylindrical gear reducers, this line covers single-stage, two-stage and three-stage configurations with standardized center distances, tailored for general industrial heavy-load scenarios such as belt conveyors, mixers, and mining equipment. It overcomes the shortcomings of traditional reducers such as complex installation, poor heat dissipation, and unstable meshing. Compliant with GB/T 10095-2018 and ISO 6336 standards, with IP54/IP65 graded protection, it features 40CrNiMoA involute gears, integral cast iron housing, and circulation-type lubrication system. Boasting advantages of stable involute meshing, convenient shaft-mounted installation, efficient heat dissipation, and cost-effectiveness, it operates stably at -15℃ to +100℃, serving as a core component for general industrial transmission worldwide.

II. Core Advantages

1. Optimized Involute Tooth Profile, Stable Meshing Transmission

Adopting precision-optimized involute tooth profile design, the ZQ series realizes stable point-to-line contact meshing, balancing transmission efficiency and load capacity. Gears undergo quenching and tempering, precision hobbing, and tooth end chamfering treatment, with tooth surface hardness up to HRC 56-60 and roughness ≤Ra 0.05μm. The involute profile is optimized for backlash control, reducing meshing impact and noise while ensuring smooth power transmission. Single-stage transmission efficiency reaches 93%-95%, two-stage efficiency 91%-93%, and three-stage efficiency 89%-91%, with torque density up to 14Nm/cm³. The multi-tooth meshing design (simultaneous contact ratio ≥25%) enables the units to withstand 3.5 times rated load instantaneous impact, suitable for continuous heavy-load operation in general industrial scenarios.

2. Shaft-Mounted Integrated Design, Convenient Installation

The series features shaft-mounted integrated structure, eliminating the need for complex external brackets and simplifying installation procedures. It covers standardized center distances (160mm-500mm) to match diverse needs: single-stage models (ratio 3:1-10:1) cover power 4kW-90kW and rated torque 1000Nm-18000Nm, suitable for high-speed heavy-load scenarios; two-stage models (ratio 12:1-100:1) cover power 5.5kW-132kW and torque 2500Nm-30000Nm, for medium-speed applications; three-stage models (ratio 120:1-1000:1) cover power 11kW-160kW and torque 6000Nm-45000Nm, for ultra-low-speed tasks. It supports shaft-mounted, foot-mounted and flange-mounted modes, with a quick-connection structure that reduces installation time by 40% compared with traditional models. The cast iron housing with reinforced ribs enhances torsional rigidity, ensuring stable operation under vibration.

3. Efficient Heat Dissipation Layout, Stable Long-Term Operation

Targeting continuous operation needs, the series adopts optimized heat dissipation layout to solve overheating problems. Standard models adopt IP54 protection (multi-lip oil seal + labyrinth structure) to resist dust and light moisture intrusion, while enhanced models upgrade to IP65 with corrosion-resistant coating for humid environments. The housing is designed with external radiating fins and internal oil guide grooves, increasing heat dissipation area by 50% and reducing operating temperature rise by 35%. The optimized gear meshing design controls operating noise within ≤63dB (single-stage) and ≤66dB (multi-stage) at 1m, meeting general industrial noise standards. Low-temperature resistant lubrication ensures stable operation at -15℃ to +100℃, and the overall service life reaches over 45000 hours under normal working conditions.

4. Circulation Lubrication System, Cost-Effective Maintenance

The lubrication system adopts ISO VG 220 extreme pressure gear oil with circulation lubrication design, equipped with oil sight glass and temperature indicator for convenient status monitoring. Small-power models use oil bath lubrication, while medium and large-power models are equipped with oil pumps to ensure uniform lubrication of all gear pairs. The first oil change is recommended after 300 hours of initial operation, and subsequent oil changes every 6000 hours under rated load. The standardized structure allows quick replacement of gears and bearings, with universal accessories reducing maintenance costs by 30%. The sealed design prevents oil leakage, avoiding environmental pollution and additional maintenance workload.

III. Typical Application Fields

• Mining Industry: Belt conveyors, ore crushers, shaft-mounted design adapting to narrow installation spaces and heavy-load conditions
• Construction Machinery: Concrete mixers, brick-making equipment, stable meshing and efficient heat dissipation matching continuous operation
• Agricultural Machinery: Grain dryers, fertilizer mixers, cost-effective and easy maintenance adapting to outdoor work environments
• Metallurgy Auxiliary: Ore screening equipment, slag conveyors, strong impact resistance adapting to dusty working conditions
• Textile Industry: Cloth rolling machines, dyeing equipment, low noise and reliable operation ensuring production stability

IV. Key Technical Parameters

V. Installation & Maintenance

Select models based on center distance, transmission ratio, and installation mode (refer to the specification table). Ensure coaxiality error ≤0.025mm during installation, fasten bolts with specified torque (70-130N·m for single-stage, 100-180N·m for multi-stage) in diagonal sequence. For shaft-mounted installation, ensure tight connection between the reducer and drive shaft to avoid vibration. Regularly inspect oil level, sealing performance, and gear wear, clean the radiating fins monthly to maintain heat dissipation efficiency. Avoid overload operation exceeding 3.5 times rated torque, and entrust complex maintenance to professional technicians.

Weigao ZQ Cylindrical Gear Decelerators adhere to the philosophy of "pragmatic reliability, convenient installation, and cost-effectiveness". Its optimized involute tooth profile and shaft-mounted integrated design break through traditional reducers' installation and efficiency limitations, ensuring reliable operation in general industrial scenarios. Backed by strict quality control and professional after-sales service, it provides economical and efficient transmission solutions for mining, construction, and agricultural industries, establishing itself as a trusted global partner in general industrial transmission.

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