Atlas Copco LZB66-L-AR020-11 | LZB66 Vane Air Motor — Medium Speed, Fully Reversible, Lube-Free

The Atlas Copco LZB66-L-AR020-11 is a lubrication-free LZB66 vane air motor with a 2,400 RPM free speed, delivering 1.46 kW (1.96 hp) and 10.5 Nm (7.7 ft-lb) at its 1,320 RPM max-output point. Fully reversible, standard keyed shaft, 2.80 kg (6.2 lb).

Performance at a Glance

This speed code tops out at 2,400 RPM free and does its useful work around 1,320 RPM, where it makes 1.46 kW (1.96 hp). Minimum starting torque is 13.5 Nm (10 ft-lb) and stall torque is 21 Nm (15.5 ft-lb), so it starts under load and stalls harmlessly rather than tripping. Suited to process pumps and agitators, batch filling, mixing and blending, and transfer conveyors.

Technical Specifications

Key Features

• Max Output Power: 1.46 kW (1.96 hp) at 1,320 RPM — rated for continuous-duty operation in fixed-plant and automation environments
• Rotation: Fully Reversible—switchable by reversing air connections, no disassembly required
• 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 Certified — Ex II 2 G Ex h IIC T4 Gb (gas) and Ex II 2 D Ex h IIIC T110°C Db (dust), to EU Directive 2014/34/EU, for ambient temperatures up to +40°C (104°F). Safe for use in classified areas where electric motors are prohibited.
• Output Shaft — Standard 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

• Process industry pumps and agitators
• Batch processing and precision filling lines
• Mixing and blending equipment for liquids and pastes
• Material handling and transfer conveyors
• Hazardous area installations requiring ATEX certified pneumatic drives
• Environments where electric motors present ignition, EMI, or water ingress risks

The LZB66 uses Atlas Copco's zero-clearance vane motor design in a hardened steel and aluminium housing, giving a long, slim profile that drops into tight machine layouts without a redesign. Speed is infinitely variable by adjusting inlet pressure or flow, without mechanical governors or electronic drives, and the linear torque-speed curve makes control predictable and repeatable across the working range.

Air consumption at maximum output is 31 l/s (66 cfm). External parts are hardened steel and aluminium. Inlet hose size 0.5 in, outlet hose size 0.8 in.

Part Number: LZB66-L-AR020-11 | EDP: 8411060317 | Performance data at 6.3 bar (91 psi). For full performance curves and dimensional drawings, see the Atlas Copco Industrial Air Motor Catalogue.