Atlas Copco PZB15-RL-AR500-11 | PZB15 Piston Air Motor — Reversible, Stainless Steel, Standard Keyed Shaft

A stainless steel PZB15 piston air motor, the Atlas Copco PZB15-RL-AR500-11 delivers 0.12 kW (0.16 hp) at 6.3 bar (91 psi) with 3.93 Nm at 297 RPM and 7.8 Nm stall torque. Fully reversible. Standard Keyed Shaft. 3.07 kg (6.8 lb).

Performance at a Glance

This piston motor delivers 3.93 Nm at 297 RPM peak output (stall torque: 7.8 Nm). Centrifugal piston technology enables reliable high-torque starting at extremely low speeds — a performance envelope no vane motor can match below 100 RPM. Consumes 25–40% less compressed air than equivalent vane motors.

Technical Specifications

Key Features

• Max Output Power: 0.12 kW (0.16 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
• Stainless Steel Construction: Full stainless steel (316L-grade) body and motor cell resists corrosion in washdown, food-grade, and chemical environments. 100% silicon-free — safe for processes where silicone contamination is unacceptable.
• 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

• Stop-start high-cycle actuation applications
• White room and food-grade automation lines
• Precise low-speed actuation in cleanroom and automation
• Drop-in replacement for electric gearmotors in ATEX zones
• Hazardous area installations requiring ATEX Zone 1/21 certified pneumatic drives
• Environments where electric motors present ignition, EMI, or water ingress risks

The PZB piston motor's centrifugal piston design achieves high starting torque at extremely low speeds — a performance profile no vane motor can match below 100 RPM. The fully reversible pneumatic circuit enables bidirectional operation without external flow-switching valves, simplifying installation and reducing component count.

The stainless steel (RL-series) housing mates directly to standard IEC and NEMA motor flanges, making drop-in replacement of electric gearmotors straightforward — with all the inherent safety advantages of pneumatic drive in ATEX and explosion-risk zones. A built-in inductive sensor port (M5) enables easy closed-loop speed monitoring.

Part Number: PZB15-RL-AR500-11 | EDP: 8411415091 | All data at 6.3 bar (91 psi). For full performance curves and dimensional drawings, see the Atlas Copco 2026 Industrial Air Motor Catalogue.