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friction clutches - Arten Freios e Embreagens Industriais

friction clutches - Arten Freios e Embreagens Industriais

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Table of Contents◗HEAVY DUTY BRAKES“Air Champ” ®DFB MODEL SERIES,SPRING ENGAGED BRAKEELEMENTSThis 8 Model Series of springengaged, air released Dual FacedElements are designed for heavyduty industrial applicationsrequiring high torque and lowinertia:◗ Available with either Standard orHigh coefficient <strong>friction</strong> linings◗ Available in disc sizes from11.500 to 25.000 inches◗ Bore sizes range up to 6.000inches◗ Static Torque ratings up to82,400 In. Lbs.◗ “O”-rIng sealed piston andcylinder design reducesmaintenance costs◗ Speeds up to 2200 rpm◗ Thermal Horsepower values upto 10.9◗ Rugged design insures longproduct life◗ Air is supplied directly at thecylinder air inlets◗ Brake can be Thru-Shaft orShaft-End mounted◗ Units are intended for horizontalshaft mounting only◗ HOW TO ORDER DFB BRAKE ELEMENTS:1. Determine which bore size you will need;2. If you require a bore size other than the standard Hub bore, you can either orderthis special size from Nexen or machine it yourself.Torque Disc MAX MINProduct Pilot Bore Max Rating Inertia Speed Diseng. Air Shipping Wt.Model Number +.001/-.000 Bore In. Lbs Lb. Ft 2 RPM Pressure (Lbs)Standard Coefficient Friction Linings:DFB 1150-S 964072 1.000 2.500 6,100 2.800 2200 73 PSI 161DFB 1650-S 964074 2.000 4.000 19,100 13.900 1500 70 PSI 286DFB 2200-S 964076 2.500 6.000 33,600 45.100 1100 66 PSI 478DFB 2500-S 964078 2.500 6.000 57,700 70.000 1000 66 PSI 603High Coefficient Friction Linings:DFB 1150-H 964073 1.000 2.500 8,700 2.800 2200 73 PSI 161DFB 1650-H 964075 2.000 4.000 27,200 13.,900 1500 70 PSI 286DFB 2200-H 964077 2.500 6.000 48,000 45.100 1100 66 PSI 478DFB 2500-H 964079 2.500 6.000 82,400 70.000 1000 66 PSI 603◗ TORQUE CAPACITIESTorque in Inch-PoundsTorque in Inch-PoundsStandard Coefficient Linings66005500440033002200110088007700660055004400330022001100DFB 1150-S0 10 20 30 40 50 60 70 80Air Pressure in PSIHigh Coefficient LiningsDFB 1150-HTorque in Inch-PoundsTorque in Inch-Pounds58000507504350035250290002175014500Standard Coefficient Linings7250High Coefficient Linings8300072625622505187541500310002075010375DFB 2200-SDFB 1650-S0 10 20 30 40 50 60 70Air Pressure in PSIDFB 2200-HDFB 1650-HDFB 2500-SDFB 2500-H0 10 20 30 40 50 60 70 80Air Pressure in PSI0 10 20 30 40 50 60 70Air Pressure in PSINOTE: Torque values for spring applied brakes will vary over the life of the brake as a function of springforce and the burnishing process of the lining. Published torque ratings are minimum values. Over the lifeof the linings, torque values may exceed published values by up to 40%.188

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