Atlas Copco TZB25-L-AV0053-14 | TZB25 Turbine Air Motor — High Speed, Counter-Clockwise, ¾″ Shaft

The Atlas Copco TZB25-L-AV0053-14 is a TZB25 turbine air motor with a maximum speed of 530 RPM, delivering 2.8 kW (3.8 hp) and 60 Nm (45 ft-lb) at its 470 RPM max-output point. Counter-Clockwise rotation, keyed 19.05 mm (¾ in) shaft, 3.5 kg (7.7 lb).

Performance at a Glance

This speed code reaches 530 RPM maximum and does its useful work at 470 RPM, where it makes 2.8 kW (3.8 hp) and 60 Nm (45 ft-lb). Minimum starting torque is 100 Nm (75 ft-lb) and stall torque is 105 Nm (75 ft-lb), so it starts under load and stalls harmlessly rather than tripping. Air consumption at maximum output is 40 l/s (85 cfm). Suited to continuous conveyor drives, centrifugal pumps and fans, and low-viscosity mixing.

Technical Specifications

Key Features

• Max Output Power: 2.8 kW (3.8 hp) at 470 RPM — rated for continuous-duty operation in fixed-plant and automation environments
• Rotation: Counter-Clockwise—factory-set for consistent directional performance
• Turbine Drive: Air consumption at maximum output is 40 l/s (85 cfm), the same figure Atlas Copco publishes for every TZB25 speed code; the speed code is what sets how the motor's output is divided between shaft speed and torque.
• ATEX Certified — Ex II 2 G Ex h IIC T4 Gb X (gas) and Ex II 2 D Ex h IIIC T135°C Db X (dust), to EU Directive 2014/34/EU. Safe for use in classified areas where electric motors are prohibited.
• Output Shaft — Keyed, 19.05 mm (¾ in), loading code d: Direct integration into existing drive trains, couplings, sprockets, and machine interfaces
• Overload Safe: Stalls harmlessly under overload; self-starts when load is removed — no thermal protection, burnout risk, or electronic fault recovery needed
• Infinitely Variable Speed: Regulate output speed and torque via inlet pressure or flow control valve — no electronic drives or VFDs required
• IP66 Rated: Sealed against dust ingress and powerful water jets for washdown and outdoor installations
• Atlas Copco Quality: Designed and manufactured to ISO 9001 standards; global spare parts and service network with application engineering support

Ideal Applications

• Continuous conveyor and belt drive sections
• Centrifugal pump and fan drives
• Mixer and blender drives for low-viscosity media
• General rotating equipment needing sustained mid-range speed
• Hazardous area installations requiring ATEX certified pneumatic drives
• Environments where electric motors present ignition, EMI, or water ingress risks

The TZB25 is a turbine air motor in a hardened steel and aluminium housing, sealed to IP66 and ATEX certified for both gas and dust atmospheres. Atlas Copco publishes the same 40 l/s (85 cfm) air consumption and the same 7 bar (101 psi) maximum working pressure across the whole TZB25 range, so on a given build it is the speed code that sets the balance between shaft speed and torque. This unit ships without a speed sensor.

Air consumption at maximum output is 40 l/s (85 cfm). External parts are hardened steel and aluminium. Inlet hose size 0.6 in (16 mm). Atlas Copco does not publish an outlet hose size for this family.

Part Number: TZB25-L-AV0053-14 | EDP: 8411310081 | Maximum working pressure 7 bar (101 psi). For full performance curves and dimensional drawings, see the Atlas Copco Industrial Air Motor Catalogue.