M3 8 Ton 10 Ton 12 Ton 18 Ton 20 Ton Capacity 3m Height Air Pneumaic Hoist

Product Description:

Industrial air hoists are lightweight material handling devices that operate according to pneumatic principles. They are widely used in machinery manufacturing, automotive repair, chemical storage, and other applications. They are particularly well-suited for applications involving flammable, explosive, and dusty environments, where electric equipment is unsuitable.
Powered by compressed air, they consist of a pneumatic motor, a reduction gear, a lifting chain/wire rope, and a control valve. Adjusting the air pressure allows for precise control of lifting and lowering speeds. The load capacity is up to 20 tons, and some customized models can accommodate higher loads.
Compared to traditional electric hoists, they require no complex circuitry and eliminate the risk of electrical leakage. They are compact, easy to operate, and require low maintenance. They can operate flexibly in confined spaces, providing a safe and efficient solution for short-distance, high-frequency material transfer in industrial production.

 

Pneumatic hoist, also known as a air hoist or pneumatic chain hoist, is a type of lifting device powered by compressed air. It is driven by an air motor, which, through a gear system, drives a chain or drum to raise, lower, and move loads. Due to its unique operating principle, it is an indispensable tool in many specific industrial applications.

The core of a pneumatic hoist is the pneumatic motor. When compressed air enters the motor, it pushes the blades or pistons, generating rotational force. This force is reduced in speed and increased in torque through a multi-stage gear system, ultimately transforming the high-speed, low-torque rotation into a low-speed, high-torque output, providing enough power to wind up a chain or wire rope and lift heavy objects.

Product Features:

1.Thickening material.

2.Strong bearing capacity.

3.Power mute.

4.Simplicity of operator.

 

I. Power Core: Details of the Pneumatic Motor
1. Precision Fit of the Vane Motor
Offset Rotor Design: The motor's rotor is not mounted directly in the center of the cylinder, but rather slightly eccentrically. This design ensures that the compressed air, when introduced, exerts a significant moment arm on the blades, thereby generating a powerful starting torque.
Ingenious Blade Material and Structure: The blades are typically made of specialized engineering plastics or carbon fiber composites, ensuring both wear resistance and a certain degree of self-lubrication. Under centrifugal force, they adhere tightly to the inner wall of the cylinder, forming a highly effective airtight chamber. Before starting, compressed air is even directed through a dedicated channel to the bottom of the blades, "pushing" them out and ensuring an effective seal is instantly established.
Instant Response and Zero Inertia: Unlike electric motor rotors weighing several kilograms, the rotor of a pneumatic motor is extremely lightweight. This means it has virtually no rotational inertia. Start instantly with a single command; stop instantly with a single command. This "hand-follow-your-heart" control experience is unmatched by electric hoists.

2. Exhaust Sound and Treatment
Source of Noise: The loud exhaust noise stems from the instantaneous expansion of high-pressure air. This isn't just a noise issue; in cold environments, the low-temperature exhaust air can even cause valves to freeze.
Muffler Details: The interior of a muffler isn't a simple cavity; it's filled with a labyrinth of channels and porous, sound-absorbing materials (such as sintered bronze or plastic foam). It must both reduce noise (typically by 10-20 decibels) and ensure unobstructed exhaust. Any backpressure directly impacts the motor's power and speed.

 

II. Transmission System: Gear and Clutch Details
1. The Ingenuity of the Gear Set
Multi-stage Reduction: Air motors can reach speeds of thousands of rpm, requiring two, three, or even four stages of gear reduction to convert the powerful torque of tens of rpm to the sprocket.
Gear Material and Lubrication: Gears are typically made of high-strength alloy steel (such as chromium-molybdenum steel) and undergo a carburizing and quenching treatment, resulting in an extremely hard and wear-resistant surface while maintaining a tough core. They operate throughout their life in a closed, lubricating oil bath, ensuring continuous and reliable lubrication and heat dissipation.

2. "Inching" Clutch (Select Models Only)
This is a highly ingenious detail. When extremely precise positioning is required, the operator can pull a bypass handle to trigger a built-in clutch. This clutch temporarily disconnects the motor from the gear train.
How it works: At this point, the weight of the load (heavy object) attempts to rotate the motor in the opposite direction through the chain and gears. The operator fine-tunes the intake valve, using extremely weak air pressure to "counter" this opposing force. By meticulously controlling this balance, micro-adjustments on the millimeter or even sub-millimeter scale can be achieved, which is crucial for precision assembly.

 

III. Control System: Valve and Piping Details
1. The "Feel" of the Suspended Control Valve
This is a precision pilot-operated air valve. When the operator gently pulls the handle, this does not directly force a powerful main airflow, but rather first opens a small pilot airflow. This pilot airflow then drives a larger valve diaphragm or piston, thereby opening the main air path.
The Value of Detail: This design reduces effort, making it easy for even female operators to operate with a single finger. At the same time, the pilot valve's microstroke provides extremely fine and linear control, allowing the operator to precisely control speed by feel.

2. Optimized Internal Air Path
The hoist's internal piping is designed to be smooth, minimizing sharp bends and pressure loss. High-quality hoists use galvanized steel or carbide tubing to prevent impurities from corrosion or aging from clogging the precision air motor.

IV. Safety and Protection: Overload and Braking Details
1. The Physical Nature of Overload Protection
As mentioned earlier, a motor will "stall" when overloaded. From a physical perspective, when the load torque exceeds the pneumatic motor's maximum output torque, the pressure differential within the motor can no longer drive the blades, and the rotor will stop. At this point, the compressed air simply circulates and leaks inside the motor, dissipating energy as noise and heat without damaging the mechanical structure itself.

2. Double Protection of the Braking System
Normal closed mechanical brake: This is a core safety feature. The brake pads are always "engaged" by spring force. Operating Principle: Only when compressed air is supplied in the lifting direction does a dedicated pneumatic piston overcome the spring force, actively releasing the brake and enabling the hoist to lift. If the air supply stops or any fault occurs (such as a ruptured air line), the spring force instantly resets, instantly stopping the load. This is a fail-safe design.

Braking During Lowering: During lowering, the air supply direction varies, and the brake is in a controlled, partially released state. The tension is related to the operator's depressing distance of the lowering button, enabling precise control of the lowering speed.

 

V. Environmental Adaptability Details
1. Housing and Seals
The housing is typically constructed of high-strength die-cast aluminum alloy, which is both lightweight and durable.
Multiple oil seals and airtight seals are used at all critical shaft extensions (such as the motor shaft and chain pulley shaft) to effectively prevent the intrusion of external dust and moisture while preventing internal lubricant leakage.

2. Chain Considerations
The load-bearing chain is a high-strength alloy steel chain that has undergone a special heat treatment. The blackening or galvanizing treatment of its surface is not just for aesthetics, but also for rust prevention and to increase surface lubricity, thereby reducing wear on the sprocket.

 

Model	Lift Capacity(t)	Air ptessure(bar)	Full load lifting Speed(m/min)	Empty lifting speed(m/min)	Motor output(kw)	Chain size(mm)	Fixed type Package (cm)	Trolley type Package(cm)
0.25T	0.16	4	20	37.5	0.6	7x21mm*1 1kg/m	50*42*30cm 40kg	70*65*35cm 45kg
	0.25	6		42	1
0.5T	0.32	4	10	16	0.6		50*42*30cm 42kg	70*65*35cm 48kg
	0.5	6	11	19	1
1T	0.63	4	5	10	0.6		50*42*30cm 45kg	70*65*35cm 50kg
	1	6	5.5	11	1
2T	1.25	4	2.5	5	0.6	7x21mm*1 1kg/m	50*42*30cm 55kg	70*65*35cm 60kg
	2	6	2.7	5.5	1
3T	3	4	2.5	6	1.8	13x36mm*1 3.8kg/m	65*55*30cm 65kg	75*65*42cm 68kg
	3.2	6	5	10	3.5
5T	5	4	1.2	3	1.8	13x36mm*2 3.8kg/m	65*55*30cm 66kg	80*80*60cm 70kg
		6	2.5	5	3.5
6T	6	4	1.2	3	1.8	13x36mm*2 3.8kg/m	65*55*30cm 70kg	80*80*60cm 75kg
	6.3	6	2.5	5	3.5
10T	10	4	0.8	2	1.8	16x48mm*2 6kg/m	70*65*35cm 80kg	100*80*70cm 85kg
		6	1.6	3.2	3.5

 

 

Product Details:

1.Avant-garde design,compact structure:increased power, extreme reliability,higher ascent and descent speeds,and low-volume transmission.

2.Dustproof sprocket bearings:sprocket bearings are dust-proof ball bearings.

3.G80 manganese steel chain:the chain and hook are made of high-quality quenched and tempered steel.The safety factor is 5 times the standard pulling force.

 

Key Features：

1. Intrinsically safe and explosion-proof is the most prominent feature of pneumatic hoists. Their power source is compressed air, ensuring spark-free operation: pneumatic motors lack electrical components like commutators and windings, eliminating the possibility of sparks. No risk of overheating: Even under high load or stalled conditions, pneumatic motors, due to their operating principle and air cooling, will not overheat like electric motors. This fundamentally eliminates ignition sources, making them ideal for flammable and explosive environments, such as refineries and tank farms in the oil, gas, and chemical industries, and dusty environments like flour mills, wood processing plants, metal polishing plants, and spray painting plants, where the air is filled with flammable paint and solvent vapors.

 

2. Stepless speed regulation and precise control: Using a control handle (a precision air valve), the operator can smoothly and linearly adjust the air intake, much like controlling the accelerator in a car. The speed is continuously adjustable from zero to maximum, enabling extremely slow "creeping" and precise "jogging," as well as fast operation. Fast Response and Instant Start and Stop: Pneumatic transmissions respond quickly, eliminating the rotational inertia issues of electric motors. Starts and stops are very crisp, with virtually no lag.
In the automotive and aerospace industries, they are used for docking and mounting large, precision components such as engines and wings, enabling millimeter-level fine-tuning.
Sensitive Cargo Handling: When handling fragile items, precision instruments, or finished products, smooth takeoffs and landings and precise positioning effectively prevent bumps and damage.

 

3. Inherent Overload Protection: Pneumatic motors have a natural characteristic known as "stall." When the load exceeds their maximum output torque, the motor stops rotating but does not burn out. Once the overload cause is resolved (e.g., by reducing the load), normal operation resumes immediately without waiting for cooling or resetting. This is often used for equipment protection, preventing serious failures such as motor burnout and gear chipping caused by misoperation or unknown loads. This significantly extends equipment life and provides an additional safety barrier for the entire lifting system, preventing accidents such as chain breakage and falls caused by overload.

 

4. Excellent environmental and high-temperature resistance: Compressed air even absorbs heat during expansion, enabling long-term, stable operation in high-temperature workshops (such as foundries and heat treatment plants).

Moisture and corrosion resistance: No electrical components are sensitive to moisture, and compressed air can carry away moisture and impurities during its flow. It performs exceptionally well in humid, salt-fog environments such as ship repair and cleaning stations.

Dust resistance: The relatively enclosed internal structure and inherent self-cleaning properties of the exhaust process make it less susceptible to failure due to dust accumulation. Pneumatic hoists broaden the application scope of lifting equipment, enabling reliable operation in many "harsh" yet production-critical environments.

 

 

Industrial air hoists, with their explosion-proof and dust-resistant properties, play a key role in a wide range of applications. For example, in machine manufacturing workshops, they precisely lift machine tool parts to aid equipment assembly; during vehicle maintenance, they safely lift heavy components such as engines and transmissions; in chemical storage, they are suitable for short-distance transport of raw material barrels and reaction tanks in flammable and explosive environments; and in mining and shipbuilding, they are often used to perform equipment maintenance and material handling in confined spaces, ensuring safe and efficient operations.

 

1. Petroleum, Chemical, and Natural Gas Industries: The "Lifeline" of Safety and Explosion Prevention
Equipment Maintenance and Installation: Regular inspection, disassembly, and installation of large equipment such as reactors, towers, pumps, and compressors in refineries and chemical plants.
Valve and Pipeline Maintenance: Replacing large valves or pipeline components in pipe corridors and equipment areas where flammable and explosive gases are present.
Tank Farm Operations: Sampling, measuring, and maintenance work performed on top of storage tanks.

 

2. Automotive Manufacturing and Aerospace: The "Robot Hand" of Precision Assembly
Powertrain Assembly: Precision lifting of engines and transmissions on the automotive production line, and their smooth and accurate placement into the vehicle body.
Body-in-White Positioning: Fine-tuning the positioning of large body panels on jigs.
Aircraft Component Assembly: Lifting and precise positioning of wings, tailplanes, landing gear, and aircraft engines on the aircraft final assembly line.

 

3. Food, Pharmaceutical, and Grain Processing: Guardians of Cleanliness and Explosion-Proofing
Large Equipment Maintenance: Lifting and cleaning the top covers or internal impellers of mixing tanks, fermentation tanks, and drying towers.
Production Line Component Replacement: Replacing heavy components of large filling and packaging machines.

 

4. Metallurgy and Foundry: A "Tough Guy" in High-Temperature Environments
Furnace Maintenance: Opening furnace covers, replacing electrodes, or repairing linings at electric steelmaking and aluminum melting furnaces.
Mold Handling and Closing: Lifting and closing high-temperature steel ingot molds and metal molds in the foundry.
Casting Cleaning and Post-Processing: Handling high-temperature castings to workstations such as sand cleaning and shot blasting.

 

5. Shipbuilding and Repair: A "Sailor" in Humid Environments
Hull Section Assembly: Precisely positioning massive hull sections in the dock.
Main Engine and Shafting Installation: Lifting and precisely aligning ship main engines (diesel engines), propellers, and drive shafting weighing tens of tons. In-cabin equipment maintenance: Equipment replacement work is performed in humid, salt-spray-filled cabins.

 

6.Woodworking and Plastics Industries: Dusty Environment Cleaners
Production Line Maintenance: Replacing heavy tools and molds or maintaining large equipment in wood crushing, grinding, and sanding workshops, or plastic pelletizing workshops.

 

 

 

Routine inspection and maintenance of pneumatic hoist

Pneumatic hoist is a product used in mining. As time goes by, the loss and wear of pneumatic hoist also increase accordingly. Routine maintenance and upkeep can not only increase the service life of pneumatic hoist, but also increase the safety during operation. Therefore, daily inspection of pneumatic hoists is essential. So, what steps are needed to inspect pneumatic hoists? The editor of Makita Hoisting Equipment Manufacturing Co., Ltd. will tell you.

1. Check the operating handle

The inspection of the operating handle is mainly to check the buttons to see whether the lifting function can be used normally. The other is to check the response of various buttons, such as whether the buttons such as limiters are normal.

2. Brake system inspection

The inspection of the brake system is mainly to check the use of the brake system under rated load. In addition, it is necessary to cut off the total air source under load to test the normal use of the brake system. By the way, it can also test whether other protection devices can operate normally.

3. Chain inspection

The inspection of the chain mainly depends on the wear and tear of its use. According to the relevant standards for chain use, if the wear of the chain exceeds 10%, it is necessary to replace the new chain in time and stop using the old chain.

4. Overall inspection

Inspect the entire pneumatic hoist, such as whether the air source, handle, and air inlet pipe are worn, and whether the hook of the pneumatic hoist is deformed.

The above is the inspection of the pneumatic hoist. If there is anything unclear, you can read the pneumatic hoist instruction manual and strive to conduct daily inspections to ensure the safety of the pneumatic hoist.

 

Install：

Before installation,unpack and carefully check whether the pneumatic hoist is damaged during transportation.The pneumatic hoist has been fully lubricated before leaving the factory.Responding to gas when first lifting Check and maintain the moving hoist and load chain.

 

Pneumatic hoist
1. Ensure that the pneumatic hoist is installed correctly. Spend more time and energy on prevention,Accidents,access to high-quality services has a great effect.
2. Ensure that the support frame for hanging the pneumatic hoist has sufficient strength to support receiving 1.5 times the weight of the sum of the pneumatic hoist and the maximum lifting load.
3.If the pneumatic hoist is suspended by a hook,it should be completely in the hook saddle.

 

Installation of hook type pneumatic hoist
Place the hook on the mounting structure.Make sure that the hook lock is closed.

 

Trolley type pneumatic hoist installation
1. When installing the trolley on the beam,the edge of the I-beam should be measured to determine the actual distribution and gasket arrangement.The distance between the flanges should be greater than the distance between the flanges large 4mm to 6mm.The number of spacers between the side panel of the trolley and the mounting lug must be equal same to ensure that the pneumatic hoist is in the center under the I-beam.
2.When installing the pneumatic hoist and trolley on the beam,make sure that the side panels are parallel and vertical. After installation,use the rated load (10-50cm)from the ground inthe entire Runthe test cart above the beam.

 

Gas supply system
The air source of the air supply system should be clean and dry.The lifting motor needs at least 0.55~0.7MPa air supply pressure to complete the rated load lifting.
Air pipe The diameter of the air supply pipe should not be less than φ25mm within the range of 15m between the air source and the pneumatic hoist.The diameter of the hose cannot be less than φ16mm.If the distance exceeds 15m,the diameter of the air supply pipe should be appropriately increased.Before the final connection,all air supply lines should be cleaned before connecting the equipment. When the installation conditions permit,the gas supply pipeline should be arranged as straight and short as possible.Long-distance pipe routing and excessive installation parts,elbows,three-way valves,ball valves,etc.,will cause the pressure to drop.If a quick connector is used at the equipment interface,there must be a φ 15mm air channel,and small diameter pipes will reduce performance.
Explain: Air hoist must use air filter and lubricator.

 

Air line lubrication device
The air hoist must use an airline lubricator.Use size at least lubricator of the same size as the air supply port of the lift motor.Lubricate the air line Install the slider as close as possible to the pneumatic hoist.

 

Air line filter
It is recommended that the pipeline air filter should be connected as far as possible if conditions permit. Install near the air hoist to prevent dust from entering the motor filter, It should be able to provide a filter capacity of 10 microns and be equipped with a moisture trap.Should Clean the filter once a month to maintain its effectiveness.

 

Wet air supply pipe
The moisture entering the air motor through the air supply pipe determines the product overhaul room. The main reason for the interval.Ensure that the compressed air is filtered and dried For drying treatment,an airtank can be used to air to maintain pressure,or install freeze-dried after the air source provided by the compressorDryer, which can ensure the drying of the air source.

 

Adjustment of rising and falling speed
In order to maximize the performance of the equipment and implement optimal control, press the following Step adjustment:
Adjust the main air valve knob of the air filter combination to achieve When the speed is satisfied.
Adjust the bleed screw in the gas valve to achieve the The specific steps are as follows:
·Open the end cover of the gas valve and loosen the lock nut on the adjusting screw ·Unscrewthe adjusting screw to speed up the fine adjustment of the lifting speed.
·Screw in the adjusting screw to slowdown the fine adjustment of the lifting speed.
·When reaching the ideal lifting speed,please tighten the adjusting screw Lock nut on the top.

 

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