Tiger TAH21 Pneumatic Air Hoist – 1.5t-3t WLL

Description

Tiger TAH21 Pneumatic Air Hoist

The Tiger TAH21 Pneumatic Air Hoist is designed for demanding industrial lifting applications where high lifting performance, reliable load control and continuous operation are required. Powered by compressed air, the TAH21 provides a practical alternative to electric chain hoists, particularly where electrical power is unavailable or where equipment needs to operate for extended periods.

Available in capacities from 1.5 tonnes to 3 tonnes WLL, the TAH21 is designed for heavy-duty lifting across a wide range of industrial environments. Typical applications include mining, shipyards, offshore construction, power stations, automotive manufacturing, foundries, heat treatment plants and general engineering.

The hoist operates from a compressed air supply of 4–6 bar and is designed for rapid lifting speeds and continuous use. Its 100% duty cycle means the hoist can remain in operation while the compressed air supply is available, without the duty-cycle limitations commonly associated with many electric hoists.

The Tiger TAH21 complies with the requirements of ASME B30.16 and EN 14492-2, with manufacturing carried out at an ISO 9001 certified facility.

Advantages of a Pneumatic Air Hoist

Compressed-air lifting equipment can offer significant advantages in demanding industrial environments. The TAH21 is particularly suited to applications where loads need to be lifted repeatedly or where continuous operation is required.

Unlike an electric hoist with a limited duty cycle, the TAH21 can remain in use until the lifting operation is complete, provided a suitable compressed air supply is maintained. This makes it suitable for production lines, maintenance operations, heavy engineering and other repetitive lifting applications.

Air-powered operation is also useful in locations where electrical power is unavailable or where compressed air is already available as part of the site’s infrastructure.

100% Duty Cycle

The Tiger TAH21 is designed for continuous-duty operation, providing a 100% duty cycle for applications involving frequent or prolonged lifting.

This makes the pneumatic hoist particularly suitable for demanding industrial environments where an electric hoist’s duty-cycle limitations could restrict productivity.

Integral Load Limiter

An integral differential pressure load limiting valve automatically prevents the operator from lifting a load exceeding 125% of the working load limit.

The load limiter is designed to provide repeatable operation across the hoist’s working pressure range without generating damaging heat or experiencing wear during normal operation.

This provides additional protection against excessive loading during lifting operations.

Fail-Safe Disc Brake

The TAH21 is fitted with a non-asbestos, self-adjusting fail-safe disc brake.

The brake is automatically applied when the compressed air supply to the hoist is shut off and is designed to remain self-adjusting throughout its service life. It can hold loads exceeding 125% of the working load limit, helping maintain control of the suspended load if the air supply is interrupted.

Precise Load Control

Accurate and precise load positioning is a key feature of the Tiger TAH21.

Both toggle and pendant control configurations are available, allowing the hoist to be specified according to the requirements of the lifting application. Pendant-controlled models are supplied with a mains emergency stop valve that shuts off the main air supply when activated.

Optional pendant configurations include aluminium hard-anodised controls, nickel-plated SG iron controls, twist-grip pendants, dual-hoist pendants and remote control.

Fleeting, Cross Hauling and Oblique Pulling

The TAH21 can be used for certain fleeting, cross-hauling and oblique pulling applications where the load deviates from the vertical position.

According to the manufacturer’s stated application conditions, Tiger air hoists can be used for fleeting and oblique pulling operations without derating the hoist.

Cross hauling can be carried out using a single hoist, two independently operated hoists or two hoists controlled from a single dual-hoist pendant.

Suitability should always be confirmed for the specific lifting arrangement and application before use.

High-Performance Pneumatic Motor

The TAH21 uses an assisted vane lifting motor designed to provide high starting torque when starting under load.

This makes the hoist well suited to applications involving frequent starts and stops, as well as lifting operations where the hoist needs to start while carrying a load.

Sealed Planetary Gearbox

A sealed planetary gearbox provides a protected drive system designed to withstand demanding duty cycles.

The gearbox uses heat-treated gears mounted on high-strength, low-friction bearings, helping provide reliable operation in demanding industrial environments.

The gearbox housing also incorporates an integral exhaust air silencer, limiting operating noise to below 85 dB(A).

Grade 8 Load Chain

The TAH21 uses Grade 8 load chain designed for the high-speed duty cycles associated with pneumatic lifting.

The load chain is manufactured in accordance with the requirements of EN 818-7 Appendix B, providing a robust lifting medium for demanding industrial applications.

Easy Maintenance

The modular construction of the Tiger TAH21 provides access to key internal components including the pneumatic motor, gearbox, brake and load limiter.

Common components are used throughout the Tiger air hoist range, helping simplify maintenance and servicing requirements.

ATEX Pneumatic Air Hoist Options

The Tiger TAH21 is available in an ATEX configuration for suitable hazardous area lifting applications.

The Category 3 configuration is manufactured in accordance with ATEX Directive 2014/34/EU and Machinery Directive 2006/42/EC.

ATEX marking:

Ex II 3 GD c IIB T4 IIIB T135°C

The Category 3 configuration is suitable for:

• Zone 2 gas hazardous areas
• Zone 22 dust hazardous areas

An ATEX Category 2 configuration for higher-safety applications is also available. Please contact our sales team to confirm the correct configuration for a specific hazardous area, atmosphere and application.

Air Line Filter Regulator Lubricator (FRL)

A suitable Filter Regulator Lubricator (FRL) unit must be used with Tiger pneumatic hoists and winches.

The FRL performs three important functions:

• Filters water and contaminants from the compressed air supply
• Regulates air pressure
• Lubricates the air supply

The FRL should have inlet and outlet ports at least as large as the inlet on the hoist motor. The pressure regulator helps maintain consistent pendant control sensitivity and hoist performance.

The airline lubricator should be installed as close as possible to the hoist motor air inlet and no more than 3 metres from the hoist. It should deliver approximately 1-3 drops of lubricant per minute when the hoist is running at full speed.

Tiger recommends a light oil such as ISO VG10. Automotive detergent oils should not be used, as they can damage or delaminate the pneumatic motor vanes.

A 10-micron airline filter should be installed as close to the hoist as possible. The filter should be emptied and cleaned regularly to help prevent excessive pressure drops caused by contamination.

Optional Stainless Steel Chain Carrier

A stainless steel chain bucket is available as an optional accessory for applications requiring additional load chain storage.

The chain carrier holds the required length of loose load chain and helps prevent the chain from becoming snagged during lifting and lowering operations. It also helps protect loose chain during transportation between operating locations.

Temperature Range

The standard ambient operating temperature range for the Tiger TAH21 is -20°C to +70°C.

For applications outside this temperature range, suitability should be confirmed with Tiger before ordering.

Typical Applications

The Tiger TAH21 Pneumatic Air Hoist is suitable for a wide range of demanding industrial lifting applications, including:

• Industrial lifting
• Heavy engineering
• Manufacturing
• Automotive plants
• Foundries
• Mining
• Shipyards
• Offshore construction
• Power stations
• Heat treatment plants
• Industrial maintenance
• General engineering
• Repetitive production lifting
• Continuous-duty lifting
• Fleeting and oblique pulling applications
• Hazardous area lifting with the appropriate ATEX configuration

Technical Specifications

Product: Tiger TAH21 Pneumatic Air Hoist
Product Number: TAH21
Capacity Range: 1.5t – 3t WLL
Operating Air Pressure: 4-6 bar
Duty Cycle: 100%
Working Temperature Range: -20°C to +70°C
Load Limiter: Integral differential pressure load limiting valve
Load Limiter Setting: Prevents lifting above 125% WLL
Brake: Non-asbestos, self-adjusting fail-safe disc brake
Brake Holding Capacity: More than 125% WLL
Load Chain: Grade 8
Load Chain Standard: EN 818-7 Appendix B
Motor: Assisted vane pneumatic motor
Gearbox: Sealed planetary gearbox
Noise Level: Below 85 dB(A)
Control Options: Toggle, pendant, twist grip, dual-hoist and remote control
Standards: ASME B30.16 and EN 14492-2
Manufacturing: ISO 9001 certified facility

ATEX Specifications

• ATEX Directive 2014/34/EU
• Machinery Directive 2006/42/EC
• Standard ATEX Category 3
• ATEX Marking Ex II 3 GD c IIB T4 IIIB T135°C
• Gas Hazardous Area Zone 2
• Dust Hazardous Area Zone 22
• ATEX Category 2 Available on request

ATEX suitability must be confirmed for the specific hazardous area, atmosphere, temperature classification and lifting application before ordering.

Weight Information

The stated TAH21 model weight includes a 3m lift and 2m toggle control.

For longer lifts, additional weight should be allowed for the extra load chain:

• AH-015 and AH-021: add 2.2kg per metre of additional lift
• AH-032: add 4.4kg per metre of additional lift
• Pendant control: add 0.4kg
• E/Stop pendant: add 2.1kg

Weights, dimensions and specifications may change as part of Tiger’s continual product development programme. Please confirm current specifications with our sales team when ordering.