20mm Air Impact Wrench
20mm Air Impact Wrench suppliers
20mm Air Impact Wrench factory

20mm Air Impact Wrench

● Significant noise reduction effect: The key advantage of B20A lies in its sound-absorbing design. It optimizes the exhaust airflow by adopting expansion chambers and annular silencers, significantly reducing the noise generated by high-speed exhaust. Data shows that its sound-absorbing improvements can achieve a sound energy reduction rate as high as 80%, creating a more comfortable working environment for operators.
● Strong and reliable performance: While effectively reducing noise, the tool maintains good performance in key indicators such as output torque, and may even see improvements, ensuring efficient work performance.
● Durable and easy to maintain: Heavy-duty manufacturing, industrial-grade quality, simple structure, low failure rate, and convenient for maintenance and upkeep.
● Wide range of application scenarios: As a medium-sized air impact wrench, it is particularly suitable for bolt connection operations of larger specifications. It is commonly used in the manufacturing and

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Product Introduction

Product introduction

The 20mm Air Impact Wrench is a medium-sized pneumatic tool widely used in the field of industrial bolt installation and removal. It is favored for its unique noise-reduction design and reliable torque output. The 20mm Air Impact Wrench is an impact-type pneumatic wrench that drives an internal motor with compressed air to generate rotational impact force, thereby efficiently tightening or loosening bolts. Its 'noise-reducing' design is mainly reflected in the improved exhaust structure, which effectively reduces noise during operation. The B20A type noise-reducing pneumatic impact wrench is widely applicable to the tightening and removal of screw connections in machine manufacturing. Using a pneumatic impact wrench not only significantly improves productivity but also greatly reduces labor intensity. The 20mm Air Impact Wrench is used for screw diameters of M18-M24 and is widely applicable to the tightening and removal of large numbers of threaded connections in machine manufacturing, rail vehicles, shipbuilding, bridge construction, and the automotive industry.

Product Parameter (specification)

Parameter name	unit	data
Weight	KG	7.8
Screw diameter	mm	20
Using air pressure	MPa	0.49
Idle speed	r/min	1000
Load gas consumption	L/s	25
Acceptance Torque	N·m/2s	491
Apothem	mm	42
Pivot Square Head Size	mm	19.05
Tracheal diameter	mm	Φ16
Load Noise (A)	dB(Lw)	114

*Determine using a float flowmeter

Product feature and application

Structural features:

Exhaust structure upgrade: The exhaust system has been improved based on the expansion chamber noise reduction principle. This process utilizes sudden changes in the pipe cross-section to reflect sound waves back to the sound source and cause mutual interference and cancellation of the sound waves, thereby effectively attenuating noise.
Comfortable working environment: The core sound-absorbing component, the annular sound hood, has each exhaust hole with a diameter of 2 millimeters, and the total exhaust area is approximately 106 square millimeters. Through this structural optimization, the sound energy reduction rate of 20mm Air Impact Wrench can reach 80%, and the sound pressure reduction rate also reaches 55%, creating a more comfortable working environment for operators.
Performance Optimization: Through fine-tuning of the internal structure, the optimal balance between noise and power has been achieved, with a 7% increase in torque.
Heavy Industry Quality: Heavy industrial-grade manufacturing, sturdy and durable, with quality assurance.

Application fields:

Vehicle Manufacturing and Repair: Bolt tightening on assembly lines for cars, tractors, and locomotive vehicles
Shipbuilding and Repair: Various bolt tightening and removal tasks in the shipbuilding and repair industry.
Heavy Equipment and Engineering: Bolt Tightening and Loosening Operations in Shipbuilding and Repair, Bridge Construction, and Mine Shaft Crane Installation.
In space-constrained scenarios: Thanks to its 42mm pitch, it can operate flexibly in positions where the surrounding space around bolts is relatively narrow.

Production details

Strong and efficient tightening capability: After optimization of the sound-absorbing structure, its output torque has increased by approximately 7% compared to the improved version, ensuring efficient completion of large bolt assembly tasks.

Noise Reduction Design: After the 20mm Air Impact Wrench improvement, the exhaust gas from the engine first enters an enlarged cavity (handle body muffler cover), forming an 'expansion chamber', and then is discharged through small holes in the handle body, thereby effectively attenuating noise.

Why choose us

1.Excellent sound insulation effect
Based on the expansion chamber noise reduction principle, its sound energy attenuation rate is as high as 80%, which can effectively reduce the operator's auditory fatigue and create a more comfortable working environment.

2.Outstanding reliability and durability
The core components such as cylinders and rotors have undergone material and process strengthening treatments, resulting in higher wear resistance and lower failure rate.

3.A win-win of high efficiency and low noise
While noise is significantly reduced, the output torque of the 20mm Air Impact Wrench has actually increased by approximately 7%. This means the tool is more powerful during operation and achieves higher tightening efficiency. At the same time, air consumption under load has also decreased, resulting in more energy-efficient operation.

FAQ

Q: What are the common faults of the 20mm Air Impact Wrench and their handling methods?

Fault	Reason	Exclusion method
The machine does not rotate or operates abnormally	The rotor end face is jammed against the front and rear cover planes. 2. The slide is too long, too thick, or excessively worn, or the slide has broken and is jammed. 3. The parts are not clean or the lubricating oil viscosity is too high.	1. Adjust the gap between the rotor and the front and rear covers. 2. Sharpen or replace the new slide plates to ensure they move flexibly within the rotor slots. 3. Clean the parts and select lubricating oil with appropriate viscosity.
Torque drop	1. The rotational speed is abnormal. 2. The impact claw has poor contact or severe wear. 3. The impactor spring is broken or has failed.	1. Adjust the engine. 2. Repair the impact claws or reequip them. 3. Replace the new spring.
Increased air consumption	1. The compressed air pipeline and all connection points are leaking air. 2. The slide does not meet the specified dimensions or is excessively worn. 3.The gap between the rotor and the front and rear covers is too large.	1. Inspect the pipeline and all connection points to eliminate gas leakage. 2. Replace the new slide. 3. Adjust the engine clearance.

Q: What are the precautions for using the 20mm Air Impact Wrench?

A: 1.Compressed air and hoses: The air pressure should be maintained at 0.46~0.59 megapascals. Before connecting the hose to the air ratchet, use compressed air to blow out internal moisture and debris. Ensure the hose is intact with no damage, and all connection points are secure and airtight.
2.Pneumatic Wrench Operation: Before starting, a small amount of lubricating oil should be added at the joint. First, run it at low air pressure for a few seconds. Adjust the position of the reversing valve according to the need to tighten or loosen screws. The appropriate size of pneumatic wrench should be selected for screws of different specifications. It is strictly prohibited to run the machine at high air pressure without load to prevent wearing of components.
3.Pneumatic Riveter Lubrication: The impact mechanism, ball bearings, and gear parts need to be lubricated regularly. It is recommended to add lubricant 1 to 2 times per month. Lubricant model: No. 2 Calcium-based Grease (ZG-2, GB491-87).
4.Maintenance: Proper maintenance is crucial for ensuring optimal performance of the air impact wrench. The maintenance cycle depends on the frequency of use. All parts must be thoroughly cleaned during each maintenance. Damaged components should be replaced promptly.
5.Storage: The air impact wrench should be properly protected during use. When storing in the warehouse, add lubricating oil and run it at low air pressure for several seconds to prevent rust inside the machine.

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