ZB61MC Air Screwdriver
The ZB61MC Air Screwdriver is a compact and reliable pneumatic fastening tool designed for precision, speed, and long-term durability. Featuring a Mechanical Clutch (MC) drive system, it delivers direct torque transmission with immediate response, ensuring consistent tightening accuracy and dependable fastening performance. Built with an industrial-grade air motor and precision-engineered components, the ZB61MC offers smooth operation, low vibration, and high efficiency. Its lightweight construction, balanced design, and ergonomic grip make it ideal for continuous assembly work where productivity, consistency, and operator comfort are essential.
Key Features
Mechanical Clutch (MC) System – Provides direct torque delivery for stable and repeatable fastening results.
High-Speed Air Motor – Ensures fast screw-driving cycles and smooth torque transmission for efficient assembly operations.
Durable Aluminum Alloy Housing – Lightweight yet rugged construction provides long service life under demanding industrial use.
Ergonomic and Balanced Design – Reduces vibration and operator fatigue during extended production shifts.
Low Noise and Smooth Operation – The advanced pneumatic motor system minimizes vibration and noise, providing a comfortable work environment.
Quick Bit Change Mechanism – Enables rapid tool setup and bit replacement for enhanced workflow efficiency.
Energy-Efficient Pneumatic Circuit – Maximizes torque performance while reducing air consumption and operating costs.
Low Maintenance Requirements – Modular internal layout simplifies servicing and ensures easy upkeep.
Applications
The ZB61MC Air Screwdriver is well-suited for a variety of precision assembly and industrial applications, including:
Electronics and small appliance manufacturing
Automotive and motorcycle component assembly
Machinery and metal fabrication lines
Furniture and cabinet production
OEM and general industrial assembly requiring accurate torque control
Performance Advantages
Immediate Torque Response – Direct torque transfer provides powerful, consistent fastening performance.
High Productivity – Rapid cycling and fast torque delivery increase production efficiency and reduce assembly time.
Operator Comfort – Lightweight and low-vibration design minimizes fatigue during continuous operation.
Durability and Longevity – Reinforced internal components and heavy-duty construction ensure reliability under continuous use.
Cost Efficiency – Reduced air consumption and low maintenance minimize overall operating costs.
Consistent Fastening Quality – Delivers precise and repeatable torque output for improved assembly accuracy.
Technical Benefits
Adjustable torque range supports various fastening tasks and material types.
The forward/reverse lever enables quick directional changes.
Compact size and lightweight construction make it ideal for tight or overhead work areas.
The built-in air regulator maintains stable torque under varying air pressure conditions.
Suitable for both manual assembly and semi-automated production systems.
Why Choose ZB61MC
The ZB61MC Air Screwdriver offers the perfect balance of power, speed, and precision for professional assembly environments. Its mechanical clutch system ensures direct torque delivery with instant response, making it ideal for repetitive, accuracy-critical fastening applications. Designed for long service life, smooth performance, and user comfort, the ZB61MC upholds our commitment to Power, Precision, and Productivity. It is a dependable choice for manufacturers seeking consistent torque accuracy, efficient operation, and low-maintenance reliability in their production lines.

- 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: 1400 rpm.
- Net Weight: 820 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: 7-50 Kgf-cm
- Standard Deviation: ±3 %
- Fastening Capacity/Machine Screw Dia.: M2.9-M6.0
- Fastening Capacity/Tapping Screw Dia.: M2.6-M4.9
| 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 |

