Where possible, all parts in the clutch are e-coated to givemaximum corrosion protection. High Temperature Epoxy Coil. High Temperature, Longer LifeGrease. All models in this section use a heavy duty machined pulley.Astronger pulley resists damage due to abusive environments. Solid ForgedRotor. Different Coil VoltagesAvailable. Although 12 volt is themost common, 24 volts can also bemade available. Depending upon the quantity, other specialty voltages can bemade. To help prevent failure fromboth vibration and outside contaminants, all coils are sealed in the coil shell with a high temperature epoxy coating. Coldweather starting. By using a clutch, the load is not engaged at start up. This allows the engine to come up to full efficiency before engaging the clutch. This helps to prevent engine stalling. Aone piece solid forged rotor means no chance of internal parts separation. Our rotors also have an even wall thickness around the coil which gives optimum flux distribution, maximizing torque. All models include our special long life grease which has shown a significant improvement in life over other standard high temp greases. E-coating. ForgedMachined Pulley. Installation of General Purpose Clutches Pre-InstallationChecklist: Most of the time, general purpose clutches are mounted directly onto the engine shaft. If the installation is not on an engine shaft, please make sure that the tolerances are close enough to provide a snug fit between the bore of the clutch and the shaft (all engine manufactures should produce shafts within the required tolerances). Also, a standard rule of thumb is that the minimum amount of shaft engagement is the diameter of the shaft for one-piece designs (twopiece designs would require shaft engagement in both pieces). The shaft step radius needs to be smaller than the fillet on the clutch bearing or the clutch will not seat properly. If it does not, a spacer with a proper chamfer is required. Prior to installation, it is critical to determine the torque tab placement. The function of the torque tab is to keep the lead wires from pulling out of the clutch due to the bearing drag. This torque tab should have a freedom of movement both axially and radially of about 1/16 of an inch. The simplest type of torque tab restraint is some type of U-bracket that captures the torque tab but does not grab it firmly. In heavy vibration applications, a larger surface area is required to prevent notching of the torque tab and the restraining pin or bracket. Key Length andHeight. In many of the clutches, the key does not go all the way through the clutch. Therefore, the key length can only be as long as the keyway length within the rotor. Please check this before installation. In some clutches, the bearing inner race may be exposed on the top of the keyway. In this case, the key needs to be slightly undersized in this area so it does not force itself against the bearing inner race. Clutches can operate either clockwise or counter-clockwise. They can be mounted with the pulley toward the engine or away from the engine. This mounting is critical because this determines which direction the leaf springs are oriented. If springs are not run in tension, they could suffer premature failure because they will be running in compression. Direction of Rotation. Engine Shaft Size. Torque Tab Restraint. Installation Procedure. 1. Slide the clutch onto the shaft (for a two-piece clutch, slide the pieces on one at a time). Please make sure that the key is in the proper location. Do not force the clutch onto the shaft because if the key is slightly off, this can damage the key or the clutch bore. The shaft should extend into the clutch enough to support each component. The clutch should be slid onto the shaft until the bearing inner race on the clutch contacts a step, washer, or drive pulley. In all cases, themounting surfaces of these components need to be parallel to each other within 0.003” TIR. If these surfaces are not parallel, the clutch could become cocked on the shaft (this would show up as a wobbling pulley). The contact of these components to the bearing inner race can extend beyond the inner race because the seal is recessed (if you are using a washer, make sure it is not www.jbj.co.uk/electromagnetic-clutches.html 15 General Purpose Clutches Installation #DriveLineHarmony
RkJQdWJsaXNoZXIy NzQyNjQ=