New gearbox bearings from NSK

A low-maintenance design is among the features of the new bearings for small gear shafts just introduced by NSK. The combination of the new cylindrical roller bearings and four-point-contact ball bearings eliminates the need for end-play clearance adjustment, thereby simplifying both mounting and maintenance. NSK can supply these bearings with pre-set clearances, making it easier for operators to achieve the results desired.

NSK highlights another enhancement which relates to cage strength,where the company has developed a special ring-guided cage with pockets employing ‘R-shaped’ corners. The design is claimed to reduce stress in the cage structure by 75%. The new bearings for small gears also feature an inner ring that is specially heat-treated to ensure dimensional stability, even under conditions of extended use at high temperatures, thus providing high dimensional stability to deliver better creep suppression. NSK has also added a number of standard new sizes to its tapered roller bearings for large gear shafts.