Atlas Copco Air Motors

More documents

Recommendations

Info

Contents • Introducing the air motor .................................. 6 • Methods of modifying motor output ................. 7 – Throttling – Pressure regulation • Using the catalogue .......................................... 7 – Motor data, specification and performance curves – Understanding the performance – Curves – Installation – Motor selection • Introduction to Atlas Copco air motors and gear units .................................................... 8 • LZB vane motors introduction ......................... 10 – Shaft loading – Mounting – Connection – Hose dimensions • LZB vane motors: data, specification and performance curves .................................. 14 – LZB 14........................................................................... 14 – LZB 14R......................................................................... 16 – LZB 22.......................................................................... 18 – LZB 22R ....................................................................... 20 – LZB 22LR ..................................................................... 21 – LZB 33.......................................................................... 22 – LZB 34R ....................................................................... 24 – LZB 33LR, LZB 34R LR................................................ 25 – LZB 33 high torque ...................................................... 26 – LZB 33/34R with brake ................................................ 28 – LZB 42.......................................................................... 30 – LZB 46.......................................................................... 34 – LZB 54.......................................................................... 38 – LZB 66........................................................................... 42 – LZB 77........................................................................... 44 • Accessories for LZB motors ............................ 46 • LZL vane motors introduction ......................... 48 – Shaft loading – Mounting – Connection – Hose dimensions • LZL vane motors: data, specification and performance curves .................................. 52 – LZL 03 – LZL 05 – LZL 15 – LZL 25 – LZL 35 • LZL vane motor/gear unit combinations .......... 54 – Helical gear units type HG – Worm gear units type BS – Shaft loading – Calculating sprocket or gearwheel dimensions – Operating speed – Mounting – Temperature • LZL air motors: with helical gear units data, specification and performance curves ... 56 – LZL 05 .......................................................................... 56 – LZL 15 .......................................................................... 58 – LZL 25 .......................................................................... 60 – LZL 35 ........................................................................... 62 • LZL air motors: with worm gear units data, spec i fi ca tion and performance curves ... 66 – LZL 05 .......................................................................... 66 – LZL 15 .......................................................................... 68 – LZL 25 .......................................................................... 66 • Accessories for LZL motors ........................... 73 • Choosing your motor ...................................... 74 – The Working Point – Atlas Copco airmotor selection guide – Starting torque and stall torque – Accelerating a load to speed – Shaft loading – Silencing – Temperature – Hostile environments – Atlas Copco air motor selection program • Installing your air motor .................................. 76 – Airlines – Recommended hose connectors – Air preparation – Lubrication – Control valves for air motors – Installation examples AT L A S C O P C O A I R M O T O R S 5
Par [100%] 100 Introducing the air motor 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 dependant on the inlet pressure. At a constant inlet pressure, ungoverned air motors exhibit the characteristic linear output torque/speed relationship. Figure 1. However, by simply regulating the air supply, using the techniques of throttling or pressure regulation, the output of an air motor can be easily modified. The free speed and torque can be regulated down to 50% for an LZB air motor. The free speed for an LZL can be regulated down to 10% and the torque can be regulated down to 20%. The shaded areas in figure 2 illustrate this. 50 Par [Nm] 50 100 Velocidad [100%] Par [100%] 100 Velocidad [r/min] 10 50 100 Velocidad [100%] LZB LZL 6 AT L A S C O P C O A I R M O T O R S 50 20 Figure 1 Figure 2 It should be noted that all vane air motors produce a variable starting torque, due to the position of the vanes in the motor when it is started. The variation differs between motor types and must be checked on an individual basis. The power that an air motor produces is a function of torque and speed. All ungoverned air motors produce the same characteristic power curve, with maximum power occurring at around 50% of the free speed. The torque produced at this 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 3. Par [Nm] Par de ahogo Par de arranque mín. The use of gear units Par Potencia Velocidad [r/min] Figure 3 Air motors operate at high speed and, although they can be controlled over a wide speed range, the output characteristics are not always suitable for the application. To achieve the required output an appropriate gear unit can be selected. The ability to change the output by use of a gear unit is illustrated in figure 4. Par [Nm] 4:1 2:1 The planetary and helical gear units used by Atlas Copco have a high level of efficiency that can be assumed to be 100%. The power output remains virtually unchanged also when gears are used. Note. The above does not apply to worm drive gear units, which can have high frictional losses and, therefore, loss of power output. 1:1 Par Potencia 1:1, 2:1, 4:1 = relaciones de engrane Velocidad [r/min] Figure 4
Page 1 and 2: Atlas Copco Air Motors
Page 3 and 4: Special motors Atlas Copco is a pre
Page 5: Additional information about air mo
Page 9 and 10: Introduction to Atlas Copco air mot
Page 11 and 12: 1 0 AT L A S C O P C O A I R M O T
Page 13 and 14: LZB Vane motors Introduction LZB va
Page 15 and 16: Vane motors LZB 14 Lubrication free
Page 17 and 18: Vane motors LZB 14R Lubrication fre
Page 21 and 22: Stainless steel vane motors LZB 22R
Page 25 and 26: Stainless steel vane motors LZB 34R
Page 27 and 28: High torque LZB 33 vane motors Lubr
Page 29 and 30: Vane motors LZB 33 LB, LZB 34RLB wi
Page 31 and 32: Vane motors LZB 42 0.50 - 0.65 kW 0
Page 33 and 34: kW 0.7 0.6 0.5 0.4 0.3 0.2 0.1 kW 0
Page 37 and 38: kW 1.0 0.8 0.6 0.4 0.2 kW 1.0 0.8 0
Page 41 and 42: kW 1.4 1.2 1.0 0.8 0.6 0.4 0.2 kW 1
Page 45 and 46: 2 25.4 j6 57 48.675 +0.05 6.35 0 21
Page 47 and 48: Accessories for LZB air motors Key
Page 49 and 50: 4 8 AT L A S C O P C O A I R M O T
Page 51 and 52: LZL Vane motors Introduction LZL va
Page 53 and 54: LZL Vane motors 1.05 - 6.5 kW 1.4 -
Page 55 and 56: LZL Vane motor/gear unit combinatio
Page 57 and 58:
Air motors LZL 05 with helical gear
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Dimensions LZL with helical gear un
Page 67 and 68:
Air motors LZL 05 with worm gear un
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Dimensions LZL with worm gear units
Page 75 and 76:
Choosing your motor The working poi
Page 77 and 78:
Installing your air motor Airlines
Page 79 and 80:
For LZL air motors it is important
show all

Atlas Copco Air Motors

Create successful ePaper yourself

Delete template?

Save as template?