Split roller bearings offer dramatically reduced downtime in assembly, maintenance and replacement situations compared to solid bearings, yet users have been prevented from using them in many applications because of their dimensional incompatibility with standard SN and SD plummer block sizes. Revolvo’s SN and SD series SRB split roller bearing units overcome this problem. They provide an easy retrofit, which offers full dimensional interchangeability with conventional SN & SD series plummer blocks, and requires no dimensional or major structural changes to machinery.
The problem that Revolvo has addressed in its development of the SN & SD series, is the lack of an ISO standard governing boundary dimensions for split bearings. Until now, this has meant that if a bearing user wanted to replace a solid bearing with a split bearing, there was a major problem, resulting from the fact that shaft centres are higher on split roller bearing units. As a result, the user would need to raise his shaft centres if the replacement process was to take place. However, this is a major undertaking, possibly requiring structural changes to machinery, which is both time consuming and expensive. Consequently it has always been the biggest drawback in changing from solid to split bearings.
Revolvo’s new SRB SN and SD series split roller bearings are convenient and quick – up to 85% quicker than solid bearings - to fit and remove from shafts; and they dramatically reduce the time required to change trapped bearings. In addition, they have a new design of cage clip, which is retained via spiral pins to one half of the cage during assembly and disassembly. This is important, because lost bearing cage clips can halt production as effectively as any breakdown. However, with Revolvo’s retained design the maintenance engineer benefits from a “free hand”, which can only speed up the bearing replacement process.
In addition to their primary role of reducing downtime, Revolvo’s SRB split roller bearings offer users performance advantages not found in solid bearings. They are statically self-aligning; they perform reliably in high temperature environments, up to 140oC without problems, and they are also ideal for use in aggressive environments, thanks to a variety of sealing systems available.