Atlas Copco LZL25-BF613-A-165 | LZL25 Vane Motor + 4-Stage Helical Gearbox — 165:1 Ratio, Type-A-Type

The Atlas Copco LZL25-BF613-A-165 is an LZL25 six-vane air motor on a 164.5:1 helical gear unit, turning 35 RPM free at the output shaft and delivering 3.2 kW (4.3 hp) with 1,769 Nm (1,305 ft-lb) at its 17 RPM max-output point. Fully reversible, foot mounted, standard keyed shaft, 77 kg (170 lb).

Performance at a Glance

Gearing of 164.5:1 brings the output shaft to 35 RPM free speed, with useful work around 17 RPM, where it makes 3.2 kW (4.3 hp). Minimum starting torque at the output shaft is 2,754 Nm (2,031 ft-lb) and stall torque is 3,538 Nm (2,609 ft-lb), so it starts under load and stalls harmlessly rather than tripping. Maximum radial load at the output shaft is 16,000 N. Suited to turning-gear, jacking and high-torque actuation duty.

Technical Specifications

Key Features

• Max Output Power: 3.2 kW (4.3 hp) at 17 RPM — rated for continuous-duty operation in fixed-plant and automation environments
• Rotation: Fully Reversible—switchable by reversing air connections, no disassembly required
• Helical Gear Unit: 164.5:1 reduction in a foot mounted housing, driven through a standard IEC interface so the motor can be replaced without disturbing gear alignment
• Not ATEX Certified — Atlas Copco publishes no ATEX certification for this gear unit build. For a classified area, specify a certified direct-drive LZL motor instead.
• 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

• Very slow positioning and turning-gear duty
• High-torque rotary valve and gate actuation
• Heavy-duty mixing requiring extreme output torque
• Slow-speed indexing and jacking drives
• Torque-intensive gear-driven machinery
• Environments where electric motors present ignition, EMI, or water ingress risks

The LZL uses Atlas Copco's six-vane direct-drive motor design, with vane sealing obtained through a combination of vane air pressure and interconnecting pins, so the vanes are seated at start-up and starting torque is repeatable cycle to cycle. Here the motor drives a helical gear unit through a standard IEC interface, so the motor can be replaced in the field without disturbing gear alignment. Atlas rates the LZL for speed regulation down to 10% and torque down to 20% of maximum, set from the air supply alone.

Air consumption at maximum output is 86 l/s (183 cfm). External parts are powder coated cast iron and aluminium.

Part Number: LZL25-BF613-A-165 | EDP: 8411181285 | Performance data at 6.3 bar (91 psi). For full performance curves and dimensional drawings, see the Atlas Copco Industrial Air Motor Catalogue.