Atlas Copco TZB25-L-A0008-14 | TZB25 Turbine Air Motor — Low Speed, Clockwise, ¾″ Shaft

The Atlas Copco TZB25-L-A0008-14 is a TZB25 turbine air motor with a maximum speed of 80 RPM, delivering 2.7 kW (3.6 hp) and 370 Nm (270 ft-lb) at its 70 RPM max-output point. Clockwise rotation, keyed 19.05 mm (¾ in) shaft, 5.3 kg (11.7 lb).

Performance at a Glance

This speed code reaches 80 RPM maximum and does its useful work at 70 RPM, where it makes 2.7 kW (3.6 hp) and 370 Nm (270 ft-lb). Minimum starting torque is 680 Nm (500 ft-lb) and stall torque is 700 Nm (510 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 heavy agitation, slow-speed feed drives and large valve actuation.

Technical Specifications

Key Features

• Max Output Power: 2.7 kW (3.6 hp) at 70 RPM — rated for continuous-duty operation in fixed-plant and automation environments
• Rotation: 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 h: 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

• Heavy agitator and paddle mixer drives in process vessels
• Slow-speed screw, auger and feeder drives
• Large-bore valve, damper and gate actuation
• Rotary table, turntable and positioner drives
• 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-A0008-14 | EDP: 8411310016 | Maximum working pressure 7 bar (101 psi). For full performance curves and dimensional drawings, see the Atlas Copco Industrial Air Motor Catalogue.