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info@comptrolinc.com  216-587-5200

At Comptrol, one of the services we offer our customers is our ability to evaluate customer’s needs and make recommendations that help companies operate more efficiently. This includes our selection of ballscrews, and our end mount bearing supports.

Choosing the correct ball screw support is important for the stability of the ballscrew when under load. There are different factors that our team will consider including the speed, stiffness, load-carrying capacity, and the operating system.

While there are different options to consider for a ball screw support, there are four that are most commonly used. The choice between the options is the way that the screw is fixed at each end. Each possible configuration is also designated by a model number that starts with the bearing block type, the mounting screw, the ballscrew, the bearing arrangement, and the shaft end. The shaft end will be designated as either a driven or a non-driven end.

Options to Consider

The four most common end support configurations are: rigid free, rigid simple, simple-simple, and the rigid-rigid options. Refer to the Comptrol website for examples. To help understand the different terms used to describe the common ball screw support options, it is important to review just the differences between them.

The rigid free uses only one end support mount. This is a C type of bearing block that also includes spaced angular contact bearings. The other end of the screw is not supported.

The rigid simple has the same C type of bearing block on one end, but instead of the other end being unsupported, it is supported by a type A or B bearing block.

The rigid-rigid, in following the pattern, uses a C bearing block at both ends.

The simple-simple option uses A or B bearing blocks at both ends.

Let our team help you in selecting the correct end supports for your application. To contact us today, give Comptrol a call at 216-587-5200.