Atlas Copco LZL15-BF322-A-018 | LZL15 Vane Motor + 2-Stage Helical Gearbox — 18.2:1 Ratio, Type-A-Type

An 18.2:1 two-stage helical gearbox sits on the LZL15 six-vane motor cell in the Atlas Copco LZL15-BF322-A-018, taking 13 Nm of motor stall torque out to 237 Nm at the gearbox shaft. Rated 3.2 kW (4.29 hp) at 6.3 bar (91 psi), fully reversible, 20.51 kg (45.2 lb).

Performance at a Glance

The integrated 2-Stage Helical Gearbox delivers a 18.2:1 reduction ratio, converting the motor's high-speed vane output into controlled low-speed, high-torque shaft power. At this ratio, the unit targets viscous mixing, stirring, valve actuation, and tension control. Helical gear stages deliver high mechanical efficiency with smooth, low-noise power transmission.

Technical Specifications

Key Features

• Max Output Power: 3.2 kW (4.29 hp) at 6.3 bar (91 psi) — 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 Zone 1/21 Certified — Approved for hazardous gas and dust atmospheres up to +40°C (104°F) in fixture-mounted use (EU Directive 2014/34/EU). 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

• High-ratio positioning and actuation systems
• Heavy-duty mixing requiring extreme output torque
• Long-run low-speed process drives
• Torque-intensive gear-driven machinery
• Hazardous area installations requiring ATEX Zone 1/21 certified pneumatic drives
• Environments where electric motors present ignition, EMI, or water ingress risks

The LZL15 vane motor connects to the 2-Stage Helical Gearbox via a standard IEC interface, enabling field-swappable motor replacement without disturbing gear unit alignment. The helical gear stages deliver high efficiency and smooth, quiet power delivery — no efficiency losses from chain or belt reduction. Both the motor and gearbox are lubrication-free in their vane cell and sealed for long service intervals.

Speed can be regulated down to 10% of free speed, and torque down to 20% — giving process engineers precise control over mixing intensity, conveyor rate, or positioning force from the air supply alone, without complex electronic speed drives.

Part Number: LZL15-BF322-A-018 | EDP: 8411181087 | All data at 6.3 bar (91 psi). For full performance curves and dimensional drawings, see the Atlas Copco 2026 Industrial Air Motor Catalogue.