Tsubaki Power Lock Inch Series

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U.S. TSUBAKI POWER-LOCK ®Technical NotesSELECTION GUIDE AND PROCEDURE(3) Hollow Shaft Inner DiameterCalculate the inner diameter of a hollow shaft, using thefollowing formula.dB : Hollow shaft innerdiameterd : Shaft diameterP : Contact pressure onthe shaftσ0.2S : Yield point of shaftmaterialK3 : Hub configuration coefficient (Refer to the HubDiameters table by series.)STEP 3If radial loads apply to POWER-LOCKs as in wheelapplications, calculate the contact pressure on the shaft Prad,and hub P’rad. Then, compare the values with those providedin the appropriate catalog table and confirm that they fallwithin the allowable range.P rad =P´ rad =1.3x Prd x
Technical NotesSELECTION GUIDE AND PROCEDURETsubaki: The solution for shaft locking devicesSL SeriesSTEP 1(1) Material StrengthLarge contact pressure applies to both the shaft and hubduring installation. Select shaft and hub materials that meetthe following strength requirements.σ0.2S≧1.2×PShaft and HubP : Contact pressure on the shaftP´ : Contact pressure on the hubσ0.2S : Yield point of shaft materialσ0.2B : Yield point of hub materialσ0.2B≧1.2×Ṕ(2) Hub Material StrengthTorque and contact pressure will combine and producestress on the hub. Calculate this stress using one of thefollowing four formulas.(a) Stress applied to the hub from a normal direction (σw)σW=−PP: Shaft contact pressure(b) Stress applied to the hub from a tangential direction (σt)EL SeriesSTEP 1 Actual Locking Force,Transmissible Torque and Contact Pressure(1) When the required transmissible torque Mt isdifferent from the (Mt) listed in the EL SeriesSpecifications tableCalculate the actual locking force Fe, thrust Pax, contactpressure P and P' using the following formulas.C1 = Mt/〔Mt〕(Required transmissible torque ratio)Fe = C1×〔Fe〕(Actual locking force)F = Fo+Fe (Total Force)Pax = C1×〔Pax〕(Transmissible thrust)P = C1×〔P〕(Contact pressure on the shaft)P´ = C1×〔P´〕(Contact pressure on the hub)Mt: Required transmissible torqueFo, [Fe], [Mt], [Pax], [P´]: Values are listed in EL SeriesSpecifications tableP : Contact pressure on the shaftP´ : Contact pressure on the hubdW : Shaft diameterd : Hub outer diameter(c) Shearing stress applied to the hub by torsional force (τB)(d) Combined stress applied to the hub(σv)Make sureσ0.2B (yield point of the hub material) is greaterthanσV. σV
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Tsubaki: The solution for shaft loc
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Tsubaki: The solution for shaft loc
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U.S. TSUBAKI POWER-LOCK ®Applicati
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U.S. TSUBAKI POWER-LOCK ®AS Inch S
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U.S. TSUBAKI POWER-LOCK ®AS Metric
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U.S. TSUBAKI POWER-LOCK ®AS Metric
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Page 40 and 41: U.S. TSUBAKI POWER-LOCK ®RE Metric
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Page 44 and 45: U.S. TSUBAKI POWER-LOCK ®KE Inch S
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Page 48 and 49: U.S. TSUBAKI POWER-LOCK ®KE Metric
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Page 54 and 55: U.S. TSUBAKI POWER-LOCK ®SL Series
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Page 58 and 59: U.S. TSUBAKI POWER-LOCK ®EF Metric
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Page 62 and 63: U.S. TSUBAKI POWER-LOCK ®EL Series
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Page 80 and 81: NOTESMore information at www.ustsub
Page 82 and 83: NOTESMore information at www.ustsub
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