Atlas Copco TZB25-L-AV0008-14 | TZB25 Turbine Air Motor — Low Speed, Counter-Clockwise, ¾″ Shaft

Precision-engineered for maximum uptime in continuous-duty cycles, the Atlas Copco TZB25-L-AV0008-14 is a TZB25 turbine air motor delivering 2.8 kW (3.75 hp) with an integrated speed governor for constant-speed, high-torque output. Counter-Clockwise rotation. ¾" (19 mm) output shaft.

Performance at a Glance

At this speed setting, the motor delivers 70 RPM at maximum output, with 370 Nm shaft torque at that point and a stall torque of 700 Nm. The built-in centrifugal governor maintains this speed under varying loads — eliminating the speed droop that plagues ungoverned vane motors in torque-critical applications.

Technical Specifications

Key Features

• Max Output Power: 2.8 kW (3.75 hp) at 6.3 bar (91 psi) — rated for continuous-duty operation in fixed-plant and automation environments
• Rotation: Counter-Clockwise—factory-set for consistent directional performance
• Lubrication-Free Vane Design: Lubrication-free vane material eliminates in-line air oilers and prevents lubricant contamination of your process or product — ideal for food, pharma, and clean manufacturing environments.
• ATEX Zone 1/21 Certified — Approved for hazardous gas and dust atmospheres up to +60°C (140°F) in fixture-mounted use (EU Directive 2014/34/EU). Safe for use in classified areas where electric motors are prohibited.
• Output Shaft — ¾" Keyed Shaft: Direct integration into existing drive trains, couplings, sprockets, and IEC/NEMA 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
• Atlas Copco Quality: Designed and manufactured to ISO 9001 standards; global spare parts and service network with application engineering support

Ideal Applications

• Explosion-risk environments requiring ATEX-rated constant-speed drives
• Large ball valve and butterfly valve actuation
• Space-constrained installations needing maximum torque density
• High-torque constant-speed process drives
• Hazardous area installations requiring ATEX Zone 1/21 certified pneumatic drives
• Environments where electric motors present ignition, EMI, or water ingress risks

The TZB25 turbine motor is 40% more energy-efficient than traditional vane motors — delivering the same shaft power from significantly less compressed air. The built-in centrifugal governor continuously trims airflow to hold set speed under load, eliminating the speed droop that causes quality issues in process and mixing applications.

The ¾" (19 mm) output shaft connects directly to standard industrial couplings, sprockets, and drive elements. IP69 wash-down rating ensures long service life in wet or high-pressure cleaning environments. Total motor weight of 3.5–5.6 kg makes it far lighter than electric or hydraulic alternatives of equivalent torque output.

Part Number: TZB25-L-AV0008-14  |  EDP: 8411310057  |  All data at 6.3 bar (91 psi). For full performance curves and dimensional drawings, see the Atlas Copco 2026 Industrial Air Motor Catalogue.