Designs Two designs are available, SHT and SHR, to have the mounting system that fits the application. SKF SHT bushings SHT (fig 1), delivered with a slotted outer sleeve, locks the application with pressure and friction. Only a cylindrical bore is needed in the hub. fig 1 SKF SHR bushings SHR (fig 2), delivered with
Shafts and hubs Roundness The roundness of the shaft should be within tolerance IT7-IT8. For example, the portion of shaft supporting the SH-bushing should be round and straight within this specified tolerances. The same tolerances are also valid for the hub. Surface roughness The surface roughness of the shaft should be max 3,2 Ra. Hollow
SH bushings The inner and outer components of the SH bushing are threaded to correspond to a divided taper angle. A nut with screws is fitted to the inner component. When the screws are tightened, the outer component is subject to axial pressure and “climbs” up the thread on the inner component. The slotted inner
Flexible couplings with oil injection mounting SKF oil injection method applied to flexible shaft couplings By combining the principle of SKF oil injection method on flexible shaft couplings, a high torque interference fit for plain, cylindrical shafts is obtained. Since there is no need for machining any keyways, splines or tapered shafts, smaller shaft diameters
Gear couplings Gear couplings are torsionally rigid and are supplied to two designs – completely flexible and flexible/rigid. A completely flexible coupling comprises two hubs with an external gear and two outer sleeves with an internal gear. It’s a universal coupling for all sorts of applications and accommodates all possible misalignments (angular, offset and combined)
Disc couplings KD disc couplings provide reliable transmission of mechanical power from driving to driven machine where low maintenance, non-lubricated couplings are required. KD disc couplings are specifically designed to accommodate general purpose drive system applications such as centrifugal pumps, generators, cooling towers, machine tools, printing, and pulp and paper machines. The coupling transmit torque
Cold Tight systems Long cool-down periods are not needed. The SKF Cold Tight systems offer considerable benefits. The SKF CT reduces downtime by several days each time a steam turbine is opened and closed. Long cool-down periods are not needed. The system also helps in planning the outage more efficiently. Increased safety The Cold Tight
Hydraulic rings and propeller nuts The time saving technology from SKF Traditionally, ship propellers are mounted on a tapered shaft end with a nut and key. The torque is transmitted through friction of the mating surfaces and the key performs a stand-by function if the friction is insufficient. On mounting, the propeller is driven up
OK couplings No keyways to machine, no taper and no thrust ring. When using the OK couplings for shaft connections, advantage is taken of the powerful oil injection method. Preparation of the shaft is simple. No keyways to machine, no taper and no thrust ring. When mounting the OK coupling, a thin inner sleeve with
Supergrip bolts Cut down on downtime! The same advanced design of OK Couplings has been applied to the coupling bolt. The Supergrip bolts represent a ‘quantum leap’ in improved technology for connecting rotating flange couplings. They are on the job – on land and at sea – delivering performance that supports the claim that they