Redex Spain, S.L. - Speed regulators

Redex KRPX

Cubic concept for rack and pinion drives: it saves costs of design and Assembly and substantially improves the rigidity of the drive

Picture of Cubic concept for rack and pinion drives
With an eye on costs and other benefits, most of the leading manufacturers of machine tools have become a "cubic concept" invented and developed by Redex to improve axle drives solutions.

The "cubic concept" implies that the structure of the machine where the gearbox is mounted becomes part of the drive itself. Unneeded intermediate pieces between reducer and machine and, on many occasions, it avoids the need to extend the truck where it is mounted. The implementation of the single mounting requires simple machining of a flat surface to fit the reducer mounting interface. The main objective is to save costs of design and Assembly and substantially improve the rigidity of the drive.

KRPXng is the generation of planetary reducers of low game, high rigidity and improved efficiency, whose planetary system is hosted directly on the cubic housing, without intermediate pieces. Two motor reducers completely cancelled the game the system through management master-esclavo (Redex TwinDrive system).

The KRPXng range is available in 5 sizes. They are compact reducers on height of pinion, not being more than 75.9 in the smaller size and 135 mm in the largest.

KRPXng incorporates the patented solution of Redex carving of the sprocket at the same output shaft, which offers the ideal combination between transmissible torque and linear stiffness. The package of bearings that support the output pinion consists of two preloaded and notably oversized angular contact roller bearings. This construction allows supporting point to be as closely as possible to the point of load on the engine, since only the thickness of the preload nut separates the pinion bearings Pack. This unique design greatly reduces radial flexion, which is responsible for 60% of the total distortion, which tends to be the weak point of the majority of existing systems on the market.

As a result, the natural frequencies of the shaft drives that incorporate the KRPXng increase significantly, having the machine of high KV levels that allow greater Dynamics (up to 25 m/s2) without need to implement electronic filters. The result is a greater ability to move heavier loads at a higher rate in the most demanding requirements of position.