Angular Misalignment All couplings, plus or minus 0.375° per hub maximum, 0.75° total. Axial Misalignment All couplings plus or minus 50% of flange gap (dimension C) When the coupling hubs are within the correct alignment fit the coupling pins, liners and resilient elements ensuring that each pin assembly has three washers fitted; one under the cap screw head and one at either end of the element. The pins should be fitted with the steel self locking nut adjacent to the resilient element. Where half or less number of pin assemblies are being used, all elements should be fitted into one flange. When all pin assemblies are fitted tighten the steel self locking nuts in pairs at 180° to each other to the correct torque. Ensure no rotating component is within 5.0mm of any non-rotating part. When the coupling assembly is to be mounted in a vertical position, we strongly recommend the use of the additional grub screw positioned at 90 degrees to the key slot, to reduce the risk of the coupling hubs creeping down the shafts. If the additional grub screw is not to be used it must be removed from the coupling hub. Tightening Torques for JXL Couplings Maintenance JXL Coupling Installation Equipment for Hazardous Areas Periodically check flange alignment and resilient elements for wear. Worn elements must be replaced. Misalignment must be rectified. Inspection and maintenance is the responsibility of the end user. Note All JXL couplings are capable of accepting a momentary overload of twice nominal torque and have an operating temperature range of -50°C to +105°C. TX note During operation bellhousings and JXL couplings do not generate heat therefore operational surface temperature will depend on the temperature of mating components and surroundings. Refer to BS EN 13463:1 9.3.2 f) Equipment ‘T’ class or maximum temperature (T max) to be determined by machine builder. JXL 25 JXL 32 JXL 42 JXL 65 JXL 80 JXL 120 JXL 148 JXL 160 JXL 170 JXL 240 JXL 270 JXL 340 0.12 0.25 0.37 0.50 0.62 0.75 Installation and Maintenance Instructions for JXL Couplings This guide is for the installation of JXL couplings when a bellhousing is not used and covers the assembly of the coupling individual components. Ensure each flange is clean. Fit each flange to their respective shafts. Line-up coupling flanges by checking dimensions between flange faces and by using a straight edge across the outside diameter of flanges at 90° intervals. If possible a dial test indicator may be used to give accurate details of alignment. The flanges should be aligned to within the following tolerances noting that where one misalignment is present then the others must be reduced proportionally. Careful alignment will extend coupling life. Parallel Misalignment 6 #DriveLineHarmony www.jbj.co.uk/couplings.html
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