The ZB76MC Air Screwdriver is a robust, high-performance pneumatic fastening tool engineered for speed, durability, and consistent torque delivery in demanding industrial assembly operations. Featuring a Mechanical Clutch (MC) drive system, it delivers direct torque transmission for fast and stable screw-tightening performance — ideal for production lines where power and precision must work hand in hand. Built with proven air motor technology and precision-machined internal components, the ZB76MC ensures smooth operation, long service life, and reduced maintenance requirements. Its lightweight yet durable construction, balanced design, and ergonomic handling make it an excellent choice for professional users seeking efficiency, control, and reliability in continuous assembly processes.
Key Features
Mechanical Clutch (MC) System – Provides instant torque transfer and strong tightening capability for fast, consistent fastening.
High-Speed Air Motor – Enables rapid screw-driving cycles to maximize production output.
Durable Industrial Construction – Reinforced aluminum housing and hardened steel gears enhance service life in demanding applications.
Ergonomic and Balanced Design – Reduces operator fatigue and improves precision handling during repetitive operations.
Low Vibration and Noise – Smooth-running pneumatic system enhances comfort and minimizes strain during continuous work.
Quick Bit Change Mechanism – Simplifies operation and speeds up bit replacement for flexible assembly applications.
Energy-Efficient Air Motor – Delivers high torque output with low air consumption for reduced operational cost.
Low Maintenance Structure – Modular internal design allows for quick and easy service access.
Applications
The ZB76MC Air Screwdriver is designed for a wide range of industrial assembly and production applications, including:
Automotive and motorcycle component assembly
Machinery and equipment manufacturing
Metal fabrication and enclosure assembly
Furniture and cabinet production
OEM and general manufacturing require firm and consistent fastening torque
Performance Advantages
Robust and Reliable – Mechanical clutch system ensures immediate torque response for stable and high-strength fastening.
High Efficiency – Fast cycling speed enhances production efficiency and shortens assembly times.
Operator Comfort – Lightweight and balanced structure minimizes vibration and fatigue for extended use.
Durable and Long-Lasting – Industrial-grade components ensure dependable performance in continuous operations.
Low Operating Cost – Efficient air consumption and reduced maintenance lower the total cost of ownership.
Smooth and Stable Operation – Direct torque transmission ensures precise and uniform fastening results.
Technical Benefits
Adjustable torque output for versatile assembly requirements.
Forward/reverse switch for quick directional changes.
Compact and ergonomic design ideal for overhead or confined workspaces.
Built-in air regulator maintains consistent torque under varying pressure conditions.
Designed for manual and semi-automated production systems.
Why Choose ZB76MC
The ZB76MC Air Screwdriver is the perfect solution for manufacturers who demand speed, strength, and precision in their fastening processes. Its mechanical clutch design ensures direct torque transfer and responsive power for stable, repeatable tightening across a variety of materials and fastener types. Engineered to deliver outstanding reliability and performance, the ZB76MC embodies our core principles of Power, Precision, and Productivity. It is the ideal tool for assembly operations requiring consistent results, ergonomic comfort, and long-lasting durability under industrial production conditions.
- Torque fix system
- Wide torque range & low vibration
- Patented clutch mechanism
- Patented high-output motor
- One-hand operation for forward and reverse
Motor Comparison
Patented motor
Traditional motor
Torque schematic diagram
Patented torque control system
Traditional torque control system
Specification:
- Free Speed: 300 rpm.
- Net Weight: 840 g
- O.A.L: 245 mm
- Dia.: 39 mm
- Air Pressure: 6 Kg/cm3
- Min. air hose bore: 8 mm
- Air Consumption: 0.55 m3/min
- Torque range: 30-180 Kgf-cm
- Standard Deviation: ±3 %
- Fastening Capacity/Machine Screw Dia.: M5.0-M9.3
- Fastening Capacity/Tapping Screw Dia.: M4.0-M7.2
| Model | Free Speed rpm | Weight g | O.A.L mm | Dia. mm | Air Pressure kg/cm³ | Min. air hose bore mm | Air Consumption m³/min | Torque range kgf-cm | Standard Deviation % | Fastening Capacity | |
| Machine Screw Dia. | Tapping Screw Dia | ||||||||||
| ZB21MC | 1000 | 520 | 210 | 31 | 6.0 | 5.0 | 0.20 | 0.5-2 | ±3 | M1.0-M2.2 | M1.1-M1.7 |
| ZB31MC | 1000 | 520 | 210 | 31 | 6.0 | 5.0 | 0.20 | 1-8 | ±3 | M1.7-M3.3 | M1.3-M2.7 |
| ZB41MC | 1800 | 520 | 210 | 31 | 6.0 | 5.0 | 0.28 | 3-17 | ±3 | M2.2-M4.2 | M1.7-M3.2 |
| ZB46MC | 2200 | 520 | 210 | 31 | 6.0 | 5.0 | 0.28 | 3-20 | ±3 | M2.2-M4.5 | M1.7-M3.5 |
| ZB49MC | 1800 | 520 | 210 | 31 | 6.0 | 5.0 | 0.28 | 3-25 | ±3 | M2.2-M4.7 | M1.7-M3.8 |
| ZB51MC | 1000 | 520 | 210 | 31 | 6.0 | 5.0 | 0.28 | 5-30 | ±3 | M2.8-M5.0 | M2.3-M4.0 |
| ZB56MC | 800 | 520 | 210 | 31 | 6.0 | 5.0 | 0.3 | 8-40 | ±3 | M3.3-M5.7 | M2.7-M4.4 |
| ZB59MC | 1700 | 820 | 245 | 39 | 6.0 | 8.0 | 0.55 | 5-45 | ±3 | M2.8-M5.8 | M2.2-M4.7 |
| ZB61MC | 1400 | 820 | 245 | 39 | 6.0 | 8.0 | 0.55 | 7-50 | ±3 | M2.9-M6.0 | M2.6-M4.9 |
| ZB66MC | 1000 | 820 | 245 | 39 | 6.0 | 8.0 | 0.55 | 7-65 | ±3 | M2.9-M6.4 | M2.6-M5.4 |
| ZB71MC | 550 | 820 | 245 | 39 | 6.0 | 8.0 | 0.55 | 15-95 | ±3 | M4.1-M7.0 | M3.1-M6.0 |
| ZB76MC | 300 | 840 | 245 | 39 | 6.0 | 8.0 | 0.55 | 30-180 | ±3 | M5.0-M9.3 | M4.0-M7.2 |
| ZB79MC | 250 | 840 | 245 | 39 | 6.0 | 8.0 | 0.55 | 50-280 | ±3 | M6.0-M11.0 | M4.9-M8.7 |
