ZQ Reducer
- Application Industry : Lifting, mining, chemical industry, light industry, etc., supports two-way operation.
- Gear Ratio : Nine fixed speed ratios (e.g. 8.23-48.57), mainly involute or circular arc gears.
- Circumferential speed limit : Gear transmission speed ≤10m/s, high-speed shaft speed ≤1500r/min.
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Shaft end form :
Provide three types of output ends: Z type (cylindrical shaft), CA type (gear shaft), and F type (coupling).
- INTRODUCTION
- SPECIFICATION
- RELATED
- INQUIRY
ZQ Series Involute Gear Reducer Technical Specifications
1. Overview
The ZQ series hardened tooth involute gear reducer features mature design and cost-effective performance. Originally developed for crane applications ("Z"=cylindrical gear, "Q"=crane in Chinese nomenclature), it's widely used in material handling, mining, and general industry.
2. Structural Components
Housing
Material: HT250 cast iron/welded steel
Sealing: IP55 protection with labyrinth seals
Gearing System
Tooth Profile: Standard involute (ISO 7-8 grade)
Material: 20CrMnTi/45 steel (HRC58-62)
Shafts: 42CrMo alloy steel with hollow shaft option
Bearing & Lubrication
Bearings: Tapered/Cylindrical roller combinations
Lubrication: Splash system (N220/N320 oil)
3. Key Features
Cost-Effective: 30% lower cost vs premium reducers
Wide Ratio: 1.25-48.57 speed reduction
Torque Range: 5-18,000 N·m output
Easy Maintenance: Split housing design
4. Applications
Typical Uses:
Cranes: Overhead/Gantry types
Mining: Conveyors, ball mills
General Industry: Production lines
Limitations:
Ambient temp: -10℃~40℃
Not for heavy shock loads
5. Compliance & Maintenance
Standards
JB/T 8853-2001 (Cylindrical Gear Reducers)
GB/T 10095-2008 (Gear Accuracy)
Maintenance Protocol
Break-in: 2hr no-load test + 500hr oil change
Regular Checks:
Oil level monitoring
Bearing temp ≤80℃
Tooth wear ≤10% thickness
6. Summary
The ZQ series offers reliable power transmission for medium-duty applications. Ideal for projects requiring proven technology and budget control. For heavy-impact or low-noise applications, consider upgrading to JC series double-circular-arc gear reducers.
| Model Code | Center Distance (mm) | Nominal Ratio | Actual Ratio | Power Range (kW) | Max Input Speed (rpm) | Gear Circumferential Speed (m/s) |
|---|---|---|---|---|---|---|
| ZQ-250 | 250 | 8.23 | 8.23 | 0.8-22 | 1500 | 12 |
| ZQ-500 | 500 | 40 | 40.17 | 30-110 | 1500 | 10 |
| ZQ-750 | 750 | 23.34 | 23.34 | 55-175 | 1500 | 10 |
Key Specifications:
Standard Ratios: 8.23, 10.35, 12.64, 15.75, 20.49, 23.34, 31.5, 40.17, 48.57
Mounting Configurations: 9 assembly types (I-IX) with 3 output shaft types:
Z-type: Cylindrical shaft end
C/CA-type: Gear-type shaft end
F-type: Cross coupling shaft end
Temperature Range: -40℃ to +40℃ operation
Efficiency: ≥94% with involute tooth profile
Safety Compliance: Meets GB/T 15112-2007 standards
