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Bimba Manufacturing Company

Bimba Manufacturing isaforward-thinIing innovator of actuation technolog6,speciali5ing in providing cutting-edge solutions to engineering challenges. Since introducing the round line stainless steel bod6 c6linder over five decades ago, Bimba has expanded its capabilities to include an extensive line of industr6-leading air c6linders,rotar6 actuators, linear thrusters,rodless c6linders, flow controls and position-sensing c6linders. The driving force behind these products isacommitment to customer satisfaction. It“s a dedication to deliver moresolutions, in moresi5es, for moreapplications. Bimba“s goal is to exceed performance and longevit6 expectations.Todemonstrate this compan6-wide promise to provide qualit6 products, Bimba maintains an ISO 9001 certification. The ISO standardprovidesauniform frameworI for qualit6 assurance that isrecogni5ed world- wide. Zithalarge inventor6 of standardcatalog products for quicI deliver6,manufacturing facilities in several locations and an international networI of stocIing distributors, worIing with Bimba means fast, on-time deliver6 and superior service. ]_p A?v9KPO=T9T?KO;6 vN LKML|@:THK;6 dnbs|KD;O?QLTDMOTRHO Q6HKDPO?= TDP =AOQKTHK5OP Q6HKDPO?= 8LKHO =O;;KDM ;LO

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t%tTable of Contents

SectionI5-14Valves

5-6 Understanding Circuit Symbols

7C

VDefined

8PneumaticValve Sizing

9Valve Selection

10-14 Frequently Asked Questions

Section II 15-29 Cylinders

15-16 Pneumatic ActuatorTypes

17 Size Selection

18 Cylinder Mounting

18 Cylinder Options

19 Ambient Conditions

19 Piston Rod Strength

20 Pneumatic Cylinder Force

21 Air Cylinder Speed

22-23 Air Consumption Rates

24-29 Frequently Asked Questions

Section III 30-32 Position Sensing

30 Position Feedback Cylinders

30 Closed Loop Controllers

31 SwitchTechnology

31 Proximity Switches

31 Sinking and Sourcing

32 Switch Hysteresis and the Operating

Window

32 SwitchTroubleshooting

Section IV 33-37 Circuits

33 Basic Control Circuits

33 Air Circuits

33Timing Circuits

33 Dual Signal Circuit

34 Advanced Control Circuits

34TwoValves for Three-Position Function

35Two-Hand Extend One-Hand Retract

36Two-Hand ExtendTwo-Hand Retract

37Two-Hand Extend with Automatic Return

SectionV38Air Filtration, Regulation, and Lubrication tBtSection [I 39-42 Charts

39 Pneumatic Pipe Si5e

39 Pneumatic Pressuregoss

40 Air Flow goss Through Pipes

41 Pressuregoss Through Pipes

41 Friction of Air in kose

42[acuum Flow Through Orifices

Section [II 43-46 Conversions

43-44 pecimal Equivalents

45 EnglishVMetric Conversions

45-46 EnglishVMetric InterchangeTables:

Torque Force

gength Mass

Area Unit Pressure

[olume[elocit6 The information presented should be used forreference onl6.Users should verif6 the ac- curac6 of this information beforeusing in their applications. Bimba is not heldresponsible to an6 inaccuracies or mis-application of the information provided. t"tSection I:[alves \DPO?=;TDPKDM GK?Q:K; ^6GRvH= Directional air control valves arethe building blocks of pneumatic control. Symbolsrepresenting these valves provideawealth of information about the valve itrepresents. Symbols show the meth- ods of actuation, the number of positions, the flow paths and the number of ports. Hereisabrief breakdown of how toreadasymbol: Every symbol has three parts (see figuretoright). The Left and Right Actuators arethe pieces which cause the valve to shift from one position to another.The Position and Flow Boxes indicate how the valve functions. Every valve has at least two positions and each position has one or more flow paths. When the Lever is not activated, the Spring Actuator (right side) is in control of the valve; the box next to the actuator is the current flow path. When the

Lever is actuated, the box next to the Lever is in control of the valve. Each position occurs when the attached actu-

ator is in control of the valve (Box next to the actuator).Avalve can only be in one "Position" atagiven time.

The number of boxes that makes upavalve symbol indicates the number of positions the valve has. Flow is indicated by the arrows in each box. These arrowsrepresent the flow paths the valve has when it is in that position (depending upon which actuator has control over the valve at that time). The number of ports is determined by the number of end points inagiven box (only count in one box per symbol as the other boxes arejust showing different states of the same valve). In the example, thereareatotal of5ports. NOTE: Sometimesaport (such as exhaust) goes directly to

atmosphereand thereisnoport to attach to.Tospot this, the actual port line will extend beyond the box, while the

ports you cannot attach to will not.APort is blocked with the symbol:

Following isalist of symbols and what they mean:

Foot Operated

Push Button

LeverManual

Mechanical2-Position, 2-Way,2-Ported

Solenoid

Detent2-Position, 3-Way,3-Ported

2-Position, 4-Way,4-Ported

2-Position, 4-Way,5-Ported

3-Position, 4-Way,4-Ported

Closed CenterValve Symbols, Flow Paths and PortsActuator Symbols

Symbols Continue on Next Page

Left

ActuatorPosition&Flow

BoxesRight

Actuator2Position, Lever Actuated, Spring ReturnValve

Spring

t.t

Section I:[alves

Simple PneumaticValves

CheckValveLever Operated, Spring Return

Piloted Solenoid and

Manual Override

Solenoid Operated, Spring Return

Flow Control,1Direction

ReliefValveLines Crossing

Lines Joined

Lines JoinedPiloted Solenoid with

Manual OverrideActuator SymbolsLines

Internal Pilot

External PilotMain Line

Pilot Line

t*tSection I:[alves C vpefined a:What does "CV"mean? A:Literally CVmeans coefficient of velocity.CVis generally used to com- pareflows of valves. The higher the CV,the greater the flow.

It is sometimes helpful to convert C

Vinto SCFM (StandardCubic Feet per Minute) and conversely,

SCFM into C

V.Although CVrepresents flow capacity at all pressures, SCFMrepresents flow at a specific air pressure. Therefore, the following chartrelates CVto SCFM atagroup of pressures. Toobtain SCFM output ataparticular pressure, divide the valve CVby the appropriate factor shown below. Toconvert SCFM into CV,simplyreverse the process and multiply the SCFM by the factor. C [to SCFM Conversion FactorTable

PSI of Air Pressure405060708090100

Factor.0370 .0312 .0270 .0238 .0212 .0192 .0177

Example:What is the output in SCFM ofavalve withaCVof 0.48 when operated at 100 psi?

0.48 (C

V) .0177 (Factor)=27 SCFM tutSection I:[alvesInlet

Pressure

/psi4C fCompression

Factor&A& Constants for[arious Pres-

sureprops 2psi 7 P5psi 7

P10 psi

7 P vB vm1BmvB< 1B tmv BmBzo BmBto BmBoB eB tme BmBe″ BmBtB BmB+e zB 1mo BmBet BmBoz BmB+t ″B emv BmBev BmBot BmB++ vBB emz BmB1z BmBo+ BmB+v vvB zmt BmB1t BmBov BmB+B vSi5eC6linder Area /Sq. In.4 vVo4 BmBo″ vV<4 Bmv″1 +Vo4 Bmoo v|vVz4 Bm″″ v|vV<4 vmee <4 +mvo <|vVo4 +m″e <|vV<4 om″v +4 emBe +|vVo4 zm+B o4 v14 z4 tBmMethod 1: Calculationquotesdbs_dbs17.pdfusesText_23