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Table of Contents◗TENSION CONTROL BRAKESWeb ProductsBTBA TENSION CONTROLBRAKESBTBA BrakesSizes 10 & 12Nexen’s BTBA delivers consistenttensioning in web controlapplications including corrugating,labeling, and printing. Thisinnovative tension control brakeoffers a finned rotor with anintegral fan for maximum heatdissipation. Low rotating inertiaensures proper tensioningregardless of roll size – even at core.Designed with ease of assemblyand maintenance in mind,these brakes feature long-life<strong>friction</strong> facings to limit replacementcosts. The quick changefeature on each facing shoereduces downtime and maintenanceexpense. Intended formounting on shaftless unwindstands and other shaft-endapplications, the BTBA comes fullyassembled and has a straightbore for fast and easy installation.HIGH THERMAL CAPACITYIN A SMALL PACKAGEThe BTBA features design improvementsthat ensure maximum heat capacity. Anintegral fan works with the finned rotor tocool the brake, while Nexen’s open-designguard allows heat to dissipate away fromthe brake quickly. Cross-drilled holes in therotor further increase air flow for optimalheat dissipation.EASY INSTALLATION -NO FLANGE REQUIREDWith simple electrical and pneumaticconnections, the BTBA retrofits shaftmountedbrakes with a straight bore forquick and easy installation.VERSATILE, PRECISETENSION CONTROLThe BTB utilizes multiple actuators toachieve differenttorque ranges across a wide range ofapplications.DESIGN SIMPLICITY FOREASY MAINTENANCEThe BTBA is the model of simplicity.Effortlessly replace facings by pulling thespring-loaded locking pin and lifting thefacing out.THERMAL CAPACITYCross-drilled rotor withheat dissipating fins.214Utilizing a cross-drilled, finnedrotor with an integral fan, theBTBA maximizes heat dissipation.Maximum ventilationholes in the guard allow heatto quickly dissipate away fromthe machine. This high thermallevel helps ensure longer lifeand lower maintenance costs.ADDITIONAL BTBA FEATURES(BTBA 12 Shown)HP t10.008.006.004.002.00• High torque capacity: (Standard & LoCo Facings)BTBA-10 (Standard): 349.4 Nm [3092 in-lb]BTBA-10 (LoCo): 174.7 Nm [1546 in-lb]BTBA-12 (Standard): 587.6 Nm [5200 in-lb]BTBA-12 (LoCo): 356.0 Nm [3150 in-lb]• Fan-cooled for maximum thermal capacity:BTBA-10: 5.6 kW [7.6 HPT]*BTBA-12: 7.5 kW [10.0 HPT]*• Low inertia:BTBA-10: 0.04 kgm2 [0.94 lb-ft2]BTBA-12: 0.08 kgm2 [1.90 lb-ft2]• Maximum speed:BTBA-10: 2000 rpmBTBA-12: 2500 rpm• Pneumatically actuated, bidirectional rotation• Compact outside diameter (OD)• Shaft-mounted design- no precision flange required• Diaphragm actuation - no seals to drag oro-rings to stick for improved low-endperformance• Torque control range of 50:1 usingmultiple actuators• Simple connections: 120 VAC (optional 24VDC) fan and 80 PSIG [5.5 bar] control air• Thermal energy is dissipated into theatmosphere, not the machine frame, so yourmachine runs cooler.BTBA Thermal Capacity*BTBA-12BTBA-1000 500 1000 1200 1500 200002500RPM*Braking in the counterclockwise direction reduces thermals by 10 – 15%7,465,974,472,981,49Kw
Table of ContentsWeb ProductsTENSION CONTROL BRAKES ◗BTBA 10 & 12 APPROXIMATE DIMENSIONSDIMENSIONS BTBA 10 & 12OMODEL A B C D E F G H J M N O P QBTBA 10 ø240,00 13,94 277,00 124,95 109,75 24,49 163,03 210,80 275,00 187,90 240,0010°M12-1.75 110°[9.449] [0.531] [10.91] [4.919] [4.321] [0.964] [6.418] [8.30] [10.83] [7.40] [9.449]BTBA 12 ø300,00 42 m12-1,75 330,00 123,69 119,81 25,0 191,3 263,90 327,40 220,50 300,00 13,49 4.5°[11.811] [12.99] [4.870] [4.717] [0.98] [7.53] [10.39] [12.89] [8.68] [11.811] [0.531]SPECIFICATIONSBTBA 10 BTBA 12INERTIA 0,04 kgm 2 [0.94 lb-ft 2 ] 0,08 kgm 2 [1.90 lb-ft 2 ]SLIP TORQUE (STANDARD FACINGS) 339,0 Nm [3000 in-lb] 588,0 Nm [5200 in-lb]THERMAL CAPACITY @ MAX RPM 5,6 [7.5 HP t ] @ 2000 rpm 7,5 kw [10.0 HP t ] @ 2500 rpmFAN POWER 41W 61WMAXIMUM AIR PRESSURE 5,5 bar [80 psi] 5,5 bar [80 psi]SHIPPING WEIGHT 14,5 kg [32 lbs.] 22,0 kg [22 lbs.]BTBA PART NUMBERSBore Sizes*31,75 34,92 38,10 41,27 44,45 47,62 49 ,17 50,80mm [in] Model [1.250] [1.375] [1.500] [1.625] [1.750] [1.875] [1.938] [2.000]STANDARD BTBA 10 927408 927420 927422 927424 927426 927428 927430 927407FACINGS* BTBA 12 927523 927525 927527 927529 927531 927533 927535 927537LO CO BTBA 10 927409 927421 927423 927425 927427 927429 927431 927432FACINGS* BTBA 12 927524 927526 927528 927530 927532 927534 927536 927538*Nexen also offers metric bore sizes and Kevlar ® <strong>friction</strong> facings for each model. Contact the Custom Business Unit at 800-843-7445 for more information on BTBA Brakeswith metric bores or Kevlar ® Friction Facings.TORQUE RATINGS Standard, Kevlar ® and Low Coefficient (LoCo) Friction FacingsBTBA-10 with Standard or Kevlar ® Facings BTBA-10 with LoCo Facings BTBA-12 with Standard or Kevlar ® FacingsBTBA-12 with LoCo Facings215
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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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Table of ContentsWeb ProductsGUIDE
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Table of Contents◗ MICRO FRICTION
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Table of ContentsWeb ProductsTENSIO
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Table of Contents◗ AIR PRESSURE C
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Table of ContentsEclipse SERVOMOTOR
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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 BRAKES
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Table of ContentsCLUTCH/BRAKES “A
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Table of Contents◗WEB AUXILLARY C
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Table of Contents◗REPAIR KITS“A
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friction clutches - Arten Freios e Embreagens Industriais

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