friction clutches - Arten Freios e Embreagens Industriais

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Table of Contents◗TENSION CONTROL CLUTCHES1. Fill in data for Roll Diameter, Web Speed,Web Width and Tension (See chart onpage 75 for suggested tension levels forvarious materials).2. If tension is given as pounds per mil per inch,( as newtons per micron per mm,) then webthickness is also required data.3. Calculate maximum and minimum web tension(T w max and t w min).4. Calculate Torque Requirement maximumWeb ProductsTECHNICAL EVALUATION FOR CLUTCHES◗ GENERAL SELECTION CALCULATIONS IMPERIAL SYSTEM (METRIC SYSTEM) ◗ CLUTCH SELECTIONand minimum. (Calculate Web Power,Total Power and Thermal Power.)5. Some tension control systems feature a tapertension circuit to reduce tension as windup roll size increases. Calculate and usemaximum taper torque as a substitute formaximum torque when using these systems.6. Calculate Belted RPM.7. Calculate Web Horsepower (Power),Total Horsepower (Power) andThermal Horsepower (Power).(Refer to torque and horsepower charts onpages 74 and 77.)1. Clutch must dissipate thermal horsepower(Power) at Belted RPM.2. Clutch must be able to rotate at Belted RPM.3. Clutch must deliver both the maximum andminimum torque within its normal control range.◗ CLUTCH SELECTION DATA IMPERIAL SYSTEM (METRIC SYSTEM)Roll Diameter Web Width Web ThicknessMax._________ in. (_________ mm) (D) Max. _________ in. (_________ mm) (W) Max. _________ Mils (M) (_________ Micron) (µ)Min. _________ in. (_________ mm) (d) Min.__________ in. (_________ mm) (w) Min. _________ Mils (m) (_________ Micron) (µ)Web Speed Tension Data ClutchesMax._______ FPM (_______ mpm) (V) Max.____________ T ❏ total ❏ pli (N/mm) ❏ lb/mil/in (N/µ/mm) (T) _______ % TaperMin. _______ FPM (_______ mpm) (v) Min. ____________ t ❏ total ❏ pli (N/mm) ❏ lb/mil/in (N/µ/mm) (t) _______ % TaperWeb Tension (T W ) Calculation:Brake Torque Requirement (τ)If tension (T) is given as: τMax = T W Max x D ÷2Total Tension; T W = T = _______________ lb (N)t w = t = _______________ lb (N)__________ x __________ ÷ 2 = _____________ inch lbs.τMax = T W Max x D ÷(2000)__________ x __________ ÷ 2 = ______________ (Nm)τMin. = t w Min x d ÷ 2PLI (N/mm); T W = W x T = _______________ lb (N) __________ x __________ ÷ 2 = ______________ inch lbs.t w = w x t = _______________ lb (N)τMin. = t w Min x d ÷ (2000)Lb/mil/in; T W = W x M x T = _______________ lb __________ x __________ ÷ 2 = ______________ (Nm)t w = w x m x t = _______________ lbN/µ/mm; T W = W x µ x T = _______________ (N)Maximum Taper TorqueτMaxt = τMax (1– % taper )100t w = w x µ x t = _______________ (N) ___________ (1– __ ) = _____________ inch lbs. (Nm)Belted RPMV x 12 x 1.05d x π_______ x 12 x 1.05 = ____________RPMx 3.14or metricV x (1000) x 1.05d x π______ x (1000) x 1.05 = __________ RPMx 3.14Web Horsepower (HP w )T w Max x V33000__ x __ = ____________HP w33000or metricWeb Power (kW)T w Max x V(6000)___ x __ = (kW)____________(6000)Total Horsepower (HP)(Total Power)HP w (HP) x D x 1.05d___ x ___ x 1.05 = ___________ HP(kW)Thermal Horsepower (HP t )(Thermal Power (kW))HP-HP w__ – __ = ________ HP t_ ________(kW)◗ NEXEN ENGINEERING SERVICEFax or e-mail to your Nexen Applications Engineer (Numbers listed on back cover of catalog)Name _______________________________________ Title: __________ Date: __________ Phone: (_____)______________ Ext: ________78Company: _____________________________________________________Address: ______________________________________________________Fax or e-mail: _____________________________________________City:_____________________State: _____ Zip Code ___________
Table of Contents“Air Champ” ®In accordance with Nexen’s establishedpolicy of constant product improvement,the specifications contained in this documentare subject to change without notice.Technical data listed in this document arebased on the latest information availableat the time of printing and are also subjectto change without notice. For currentinformation, please consult:www.nexengroup.comTOOTH CLUTCHESThis Section Contains: . . . . .PageTOOTH CLUTCHES5H Model Flange Mount Multiposition . . .80-815HP Model Pilot Mount Multiposition . . .82-835HP & 5HP-E Flexible Couplings . . . . . .84-855HP-E EnclosedPilot Mount Multiposition . . . . . . . .86-875HP-SP Model Pilot Mount EnclosedSingle Position . . . . . . . . . . . . . . . .88-895HP-SP & 5HP-SP Single andDouble Flexible Couplings . . . . . . . .90-915HP-SP-E Model Enclosed Pilot MountSingle Position . . . . . . . . . . . . . . . .92-935HS Model Sprocket Tooth Clutches . . .94-955HP-SE Series Spring Engaged . . . . . . .96-97This Section Contains: . . . . .PageMETRIC TOOTH CLUTCHES5H Model Flange MountMultiposition . . . . . . . . . . . . . . . . . .98-995HP Model Pilot MountMultiposition . . . . . . . . . . . . . . . .100-1015HP-E EnclosedPilot Mount Multiposition . . . . . .102-1035HP-SP Pilot Mount EnclosedSingle Position . . . . . . . . . . . . . .104-1055HP-SP-E Model EnclosedPilot Mount Single Position . . . . .106-10779
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Table of ContentsPRODUCTCAT ALOG10-
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Table of Contents◗PRODUCT NUMBER
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Table of Contents◗FAMILY OF PRODU
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Table of Contents“Air Champ” ®
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Table of Contents◗APPLICATION GUI
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Page 31 and 32: Table of Contents◗ MICRO FRICTION
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Page 111 and 112: Table of Contents◗ AIR PRESSURE C
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Table of ContentsEclipse SERVOMOTOR
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Table of ContentsEclipse LINEAR MOT
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Table of ContentsEclipse NEMA AC MO
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Table of ContentsEclipse METRIC AC
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Table of Contents◗ BW MODEL BRAKE
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Table of Contents◗CALIPER BRAKES
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Table of Contents◗CALIPER BRAKESS
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Table of Contents◗DRUM BRAKES“A
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Table of ContentsDRUM BRAKES “Air
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Table of ContentsDRUM BRAKES “Air
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Table of Contents◗HEAVY DUTY BRAK
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Table of Contents◗METRIC BRAKES
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Table of Contents◗BRAKESWeb Produ
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Table of Contents◗TENSION CONTROL
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Table of Contents◗CLUTCH/BRAKES
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Table of Contents◗CLUTCH/BRAKESFM
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Table of Contents◗CLUTCH/BRAKESA
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Table of ContentsCLUTCH/BRAKES “A
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Table of Contents◗METRIC CLUTCH/B
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Table of Contents◗WEB GUIDING CON
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Table of Contents◗WEB AUXILLARY C
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Table of Contents◗CONTROLS“Air
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Table of Contents◗REPAIR KITS“A
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Table of Contents◗FUNCTION EXAMPL
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