SGS SR series split ring for the DRIVE END

The patented SGS^TM SR Series split ring shaft grounding systems are designed to control shaft-to-frame capacitive discharge through bearings in motors, gears, shafts, couplings, tachometers and rolls by providing a single low impedance pathway from the shaft to the frame. They also can be used as part of a system to control damage resulting from circulating currents or other electrical potentials. Installation can normally be done in the field with hand held tools without uncoupling or moving the equipment.

The SGS^TM SR series split ring system is designed to clamp onto the shaft. It is important the provided shaft diameter be accurate to +/- 0.0005 or the unit may not fit. Any out-of-roundness of the shaft must be indicated. For installation, the unit used for non-close coupled motors normally requires approximately 2.0 inches of clear straight axial length of the shaft and 6.0 inches of vertical clearance as measured from the top of the shaft. Systems requiring less clearance are available such as for c-face applications (SR Series Compact Version). Installation requires cleaning the shaft, clamping the split ring assembly around the shaft and mounting the grounding brush support kit onto a nearby surface using existing bolt arrangements. Installer may be required to provide some adaptation of shaft guard. Electrical continuity must be provided between the grounding brush support and the equipment frame assembly that holds the bearing. For this reason, thread adhesives must not be used. When a kit is quoted or specified, please note any specific dimensional limits provided. The maximum rpm for this kit is 3600 rpm up to shaft diameter of 5.0 inches unless otherwise stipulated.

The SGS^TM patented SR series shaft grounding system is designed to control shaft-to-frame capacitive discharge through bearings by providing a single low impedance pathway from the shaft to the frame. These systems are not rated explosion proof. If eddy currents are present, which is unlikely except in AC motors with 100 or more horsepower at 1200rpm or less OR on motors 200hp or greater regardless of rpm and no motor bearing is insulated, then two shaft grounding systems should be installed to pass the eddy current around both motor bearings while also controlling the capacitive discharge. If the ODE motor bearing is insulated to control eddy current, then one shaft grounding system can be used at the DE (i.e., SR series split ring) non-insulated bearing to control the shaft-to-frame capacitive discharge. If two insulated bearings are used, then a DE shaft grounding system should be used to control for potential eddy currents. A single insulated bearing will not control capacitive discharge through the non-insulated bearings. Please call to discuss applications where both eddy currents and capacitive discharge are believed to be present.