Atlas Copco LZB33-L-A0004-11 | LZB33 Vane Air Motor — Very Low Speed, Clockwise, Lube-Free

The Atlas Copco LZB33-L-A0004-11 is a lubrication-free LZB33 vane air motor with a 38 RPM free speed, delivering 0.36 kW (0.48 hp) and 195 Nm (144 ft-lb) at its 18 RPM max-output point. Clockwise, standard keyed shaft, 5 kg (11.1 lb).

Performance at a Glance

This speed code tops out at 38 RPM free and does its useful work around 18 RPM, where it makes 0.36 kW (0.48 hp). Minimum starting torque is 360 Nm (266 ft-lb) and stall torque is 390 Nm (288 ft-lb), so it starts under load and stalls harmlessly rather than tripping. Suited to gate and valve operators, rotary tables, extruder feeds and clamping drives.

Technical Specifications

Key Features

• Max Output Power: 0.36 kW (0.48 hp) at 18 RPM — rated for continuous-duty operation in fixed-plant and automation environments
• Rotation: 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 Certified — Ex II 2 G Ex h IIC T6 Gb (gas) and Ex II 2 D Ex h IIIC T85°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
• 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

• Torque-critical valve and gate operators
• High-torque indexing and rotary tables
• Extruder feed and screw-drive systems
• Load-holding and clamping systems
• Hazardous area installations requiring ATEX certified pneumatic drives
• Environments where electric motors present ignition, EMI, or water ingress risks

The LZB33 uses Atlas Copco's zero-clearance vane motor design in a compact hardened steel and aluminium housing, giving a 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 8.1 l/s (17.2 cfm). External parts are hardened steel and aluminium. Inlet and outlet hose size 0.4 in.

Part Number: LZB33-L-A0004-11 | EDP: 8411032264 | Performance data at 6.3 bar (91 psi). For full performance curves and dimensional drawings, see the Atlas Copco Industrial Air Motor Catalogue.