ZB76MC Air Screwdriver

 

 

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