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Arbor and adapter systems

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THINKING IN SOLUTIONSBalanceBalancing grade of Pokolm arborsArbor type ISO/BT HSKViewSize 30 40 50 25 32 40 50 63 100Form – – – all all all all all allGrade level 2.5 6.3 6.3 2.5 2.5 2.5 2.5 2.5 6.3RPM 30,000 18,000 12,000 40,000 30,000 30,000 30,000 25,000 12,000We would be glad to implement balancing grades and special requests deviating from this table – please ask our sales personnel.100.0permitted final unbalance in [gmm/kg] or eccentricity e in [µm]10.01.0HSK 80HSK 100SK 50SK 40HSK 63 HSK 40HSK 50/SK 30/HSK 40/HSK 320.1 G 0.1HSK 25G 40G 16G 6.3G 2.5G 15,000 10000 15,000 20,000 25,000 30,000 40,000 50,000Speed [RPM]DIN/ISO 194010

Adapters, extensions,collets, drill chucksHollow shank taper HSKTips and practicalinformationCalculations and definitionsBalancing grade classes and typical applicationsG 0.4 e.g. ultrafine grinding machinesG 1 e.g. small motors, grinding machine drivesG 2.5G 6.3e.g. tools, small tool arbors, electric motors, turbinese.g. tools, tool arbors, tooling machine partsSteep taper SK / BTG 16e.g. large tool arbors, cardan shafts, drive shaftsG 40e.g. drive shafts, car wheels, crankshaft drivesFlat contact surfaceList of formulas:Calculationof final unbalance in[gmm/kg]Calculationof angular frequency in[1/s]Calculationof balancing grade in[mm/s]Calculationof equalizing weightAccessoriese = U – mω = 2·π·n –––––60G = e · ω = U · π · n –––––m · 30m r= e · m ––––rOrder / request formsTerms and dimensions:G = balancing grade in [mm/s]e = final unbalance in [gmm] or center gravity shift in [μm]U = unbalance (m · e) in [gmm]m = rotor weight in [g]Spindle systems / shrinktechnologyω = angular frequency (2 · π · f) in [1/s]f = frequency (n/60) in [1/s]n = speed in [U/min]F = centrifugal force (U · ω) in [N]r = radius of unbalance in [mm]m r= final unbalance [g]Assembly instructionsIndex11

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Pokolm Frästechnik GmbH & Co. KG | Adam-Opel-Straße 5 | 33428 Harsewinkel | Germany | +49 5247 93610 | info@pokolm.com | www.pokolm.de