Perfection in Motion

Concentric Maxi Torque

Innovative. Designed and developed specifically to suit the hub-to-shaft connection needs of small shafts and drive components in the power transmission and motion control markets. This patented keyless hub-to-shaft connection system enables customers to easily phase, install, adjust and remove drive components, all while offering precise component positioning.

Concentric. With radial runout less than .001/.26mm as assembled, the Concentric Maxi Torque system enables customers to attain higher drive speeds, reducing unwanted vibration and maintain concentricity, offering a superior connection solution.

Reliable. The mechanical shrink fit accomplished by the Concentric Maxi Torque system provides torque capacity which far exceeds that of two set screws arranged perpendicular to the shaft, offering the most reliable connection in the industry.

Economical. The compact design eliminates the need for the extended hubs used to accommodate set screws, allowing motion system engineers to design drives which are lighter and use less space. The shaft damage and added expense of shaft modification often associated with the use of set screws or pins is eliminated.

Versatile. Manufactured for synchronous belt drives in standard inch and metric pitches, for shaft sizes ranging from .118 in. (3mm) to 1.1875 in. (30mm). Other drive systems, including gears, sprockets, etc. using the Concentric Maxi Torque will be quoted upon request.

Custom Machine & Tool Co., Inc. (CMT) has been a US manufacturer of timing pulleys, drive systems and components for the power transmission and motion control markets since 1964. CMT’s product offering includes standard and made-to-order precision timing pulleys in all metric and inch tooth profiles; timing pulley bar stock, backed by our 72-hour shipping guarantee; and a full complement of matching timing belts and flanges.

CMT developed and patented a keyless hub-to-shaft connection system, allowing for precise component positioning and tight runout control on demanding applications. The new system, the Concentric Maxi Torque, offers superior features and benefits compared to other connection methods such as keyways, set screws, pins, clamp collars and other locking devices.