Air motorsFor top performance in demanding applications i ' ’!*/( H .V

2 | Atlas Copco Air Motors

Air motor values and characteristics • Air motors are compact and lightweight. An air motor weighs only a quarter as much and occupies only one sixth of the space of an electric motor of equivalent output power. Air motors develop far more power relative to size and weight than most other motor types. Air motors can be stalled indefinitely without overheating or sustaining any other damage. They can be started and stopped repeatedly to an unlimited extent. Torque, speed and direction of rotation can be changed easily using simple control methods. Output inherently adjusts to match the applied...

Select the right motor and download 3D drawings Download the dimensional drawings in 2D or 3D available at https://webbox.atlascopco.com/webbox/dimdrw/index.html Available formats: PDF - DXF - IGS - STP Selecting the right motor has never been easier! Just enter the required working point for the application and the most suitable motor will automatically be selected. For the selection use the Atlas Copco selection tool. Air motor selection program, available at www.atlascopco.com./en-uk/itba/industry-solutions/airmotors/air-motor-selection-tool 4 | Atlas Copco Air Motors

Choosing your motor 07 Installing your air motor 10 Methods of modifying LZB - LZL motor output 12 Introduction to Air Drive Units 13 • Introduction to LZB Vane motors • Shaft loading • Hose dimensions • LZB Vane motors: data, specification and performance curves • Introduction to LZL Vane motors • Shaft loading • Hose dimensions • LZL Vane motors: data, specification and performance curves • LZL Vane motor/gear unit combinations • LZL Air motors: with helical gear units data, specification and performance curves • Introduction to TZB Turbine motors • TZB Turbine motors: data, specification and...

Using the catalogue Motor data, specification and performance curves Understanding the performance curves For each Atlas Copco motor/gear unit combination the following information is presented in this catalogue. The output of an air motor is most clearly seen from its performance curves, Figure 8. For each motor/gear unit the power, torque and air consumption are shown as a function of speed. 1. Tabular data – summary of main performance parameters. The diagrams shown apply to an inlet pressure of 6.3 bar, to calculate performance at other pressures refer to page 7 in this catalogue. 2. Dimensional...

Choosing your motor The working point When selecting an air motor for a certain application, the first step is to establish what is called the “working point”. This is the point described by the desired operating speed for the motor and the torque required at that speed. The wide operating range of the air motor makes it probable that a number of motors could run with the same working point. However as it is most efficient to run an air motor at the speed at maximum output, the motor that produces maximum power nearest to the working point should probably be selected. Other criteria that can...

Hostile environments The noise generated by an air motor is mainly caused by the exhaust air of the motor. The noise level increases with speed and is greatest at the free speed. Atlas Copco air motors are found in use in many hostile environments, often with little or no modification. These environments are typified as being: Acidic – Explosive – Radioactive – High temperature – Moist – Dusty – Intense electric fields – Underwater – High humidity. It is also possible to power an air motor with many types of compressed gas, for example nitrogen or natural gas. However, to ensure safe and reliable...

The air motor is one of the toughest and most versatile power units available to today’s design engineer. It is easy to control over a wide speed range, and it produces maximum torque where it is often most needed – at start up. The performance of an air motor is dependent on the inlet pressure. At a constant inlet pressure, ungoverned air motors exhibit the characteristic linear output torque/speed relationship. Figure 1. point is often referred to as ”torque at maximum output.” The performance curves for an ungoverned air motor operating at a constant air pressure are illustrated in Figure...

Installing your The recommended dimensions of air lines are given in the introductory section to each motor type. Note that exhaust hose is larger than inlet hose. The recommendations are valid for hose lengths of up to 3 meters. For distances between 3 and 15 meters select a hose diameter one size up, and for distances between 15 and 50 meters select a hose diameter two sizes up. It is important to note that the output of the motor will be reduced if these guidelines are not followed. Because of the compact dimensions of Atlas Copco vane motors, special hose connectors are available with small...

Directional control valves 3/2 valve These valves are used to start or stop a motor, or to change its direction of rotation. It is most usual to use what is termed a 5/3 valve to control a reversible motor, and a 3/2 valve to control a Non-reversible motor. The valve designations refer to the number of connection ports and the number of operating positions the valve provides, for a 5/3 valve this is 5-connection ports and 3 positions. When selecting any control valve it is important to ensure that it has a sufficient flow capacity to supply the requirements of the motor. 5/3 valve Figure 6 The...

Methods of modifying LZB – LZL motor output Pressure regulation A throttle is usually fitted into the motor´s inlet, although it can also be complemented with some throttling at the exhaust. You should never create a back pressure above 1 bar at the exhaust. When using a pressure regulator it is mostly fitted into the motor´s inlet hose. The use of pressure regulation is ideal when control of the stall torque is required and a high starting torque is not so important, Figure 6. Operating pressure Velocidad [r/min] Speed r/min Pressure regulation Sometimes the motor operates at other supply pressures...