Retrofit The SS Retrofit Cam for the vintage Nautilus Plateloading Biceps/Triceps machine is supplied with open-style bearings to support the movement arm articulations. The supported force is so well distributed that concerns for their durability in an abusive environment are not warranted. In extreme cases it may be possible to place sealed bearings in the SuperSlow® Cams, thus eliminating the need in the movement arms altogether.

Note: this machine represents one of the first two Nautilus products. The earliest production models have cams that are integral to the movement arms in such a way that retrofit of the cams is extremely difficult or impossible. We have dealt successfully with this problem in our production facilities but we do not recommend any one else suffering such obstacles. If you have one of these older machines possessing integral, steel, spider or ribbed cams, phone us and we will be glad to discuss the problems, solutions, and limitations. Otherwise, the later vintage possessing aluminum cams is a simple changeout. This retrofit also includes Keflar conversion hardware.

Bearings and oil-impregnated washers are supplied to also enable the handle to freely rotate for slight alignment discrepancies. It is highly recommended that the handle be taken to your machinist to weld on a dog to prevent this free moving handle from falling and striking the knees.