ZB51MC Air Screwdriver

 

 

The ZB51MC Air Screwdriver is a precision-engineered pneumatic fastening tool designed for accuracy, durability, and efficiency in high-volume production environments. Equipped with a Mechanical Clutch (MC) drive system, it delivers direct torque transmission for immediate, stable, and repeatable screw-tightening performance — ensuring consistent quality in every fastening cycle. Built with our advanced air motor technology and precision-machined internal components, the ZB51MC offers powerful torque output, smooth operation, and excellent energy efficiency. Its compact and ergonomic design reduces operator fatigue, making it ideal for light to medium-duty assembly applications where speed, precision, and reliability are essential.

 

 

Key Features

 

 

• Mechanical Clutch (MC) System – Provides direct torque delivery for consistent tightening and repeatable torque accuracy.

• High-Speed Air Motor – Ensures fast screw-driving cycles for improved workflow and higher productivity.

• Lightweight and Durable Aluminum Body – Designed for strength, balance, and easy handling during continuous operation.

• Ergonomic Grip and Balanced Structure – Reduces vibration and operator fatigue, enhancing comfort and control.

• Low Noise and Vibration – Smooth pneumatic drive minimizes operator strain and improves workplace safety.

• Quick Bit Change Mechanism – Allows rapid bit replacement for seamless operation and shorter downtime.

• Energy-Efficient Air Circuit – Delivers strong torque performance with low air consumption to reduce running costs.

• Easy Maintenance – Modular internal design enables quick service and long-lasting reliability.

 

 

Applications

 

 

The ZB51MC Air Screwdriver is suitable for a wide range of precision fastening and industrial assembly operations, including:

 

 

• Electronics and small appliance manufacturing

• Automotive and motorcycle component assembly

• Machinery and metal fabrication lines

• Furniture and cabinet production

• OEM and industrial assembly applications requiring stable torque performance

 

 

Performance Advantages

 

 

• Consistent Torque Output – Mechanical clutch ensures direct, uniform torque delivery for accuracy-critical applications.

• High Productivity – Rapid cycling speed and reliable clutch engagement boost assembly line efficiency.

• Operator Comfort – Lightweight and low-vibration design minimizes fatigue during extended use.

• Durable and Reliable – Hardened internal components and industrial construction ensure long-term performance.

• Energy Savings – Optimized air motor achieves high torque output with reduced air consumption.

• Stable Operation – Smooth torque control prevents over-tightening and ensures repeatable fastening results.

 

 

Technical Benefits

 

 

• Adjustable torque range for multiple fastening requirements.

• Forward/reverse control for quick directional change.

• Compact body for confined or overhead assembly work.

• Built-in air regulator ensures torque stability under fluctuating air pressure.

• Designed for both manual and semi-automated production systems.

 

 

Why Choose ZB51MC

 

 

The ZB51MC Air Screwdriver provides professional-grade fastening performance in a compact and ergonomic form. Its mechanical clutch system ensures accurate, consistent torque delivery, while its balanced and energy-efficient design enhances operator comfort and overall productivity. Engineered with our dedication to Power, Precision, and Productivity, the ZB51MC is a reliable and cost-effective solution for manufacturers who demand consistent torque accuracy, long service life, and smooth operation in continuous assembly environments.

• 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: 1000 rpm.
• Net Weight: 520 g
• O.A.L: 210 mm
• Dia.: 31 mm
• Air Pressure: 6 Kg/cm³
• Min. air hose bore: 5 mm
• Air Consumption: 0.28 m³/min
• Torque range: 5-30 Kgf-cm
• Standard Deviation: ±3 %
• Fastening Capacity/Machine Screw Dia.: M2.8-M5.0
• Fastening Capacity/Tapping Screw Dia.: M2.3-M4.0

 

 

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