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Precision combined roller bearing and steel profile

Precision combined roller bearing and steel profile

When we talk about “precision” in this context we are not talking about a tighter set of tolerances relevant to the internal construction of the full complement cylindrical roller bearing, but rather the tightening of the external running tolerance between the outside diameter of the combined roller bearing and the ‘mouth’ of the mating steel profile.

This is achieved by accurately milling the ‘mouth’ of the hot rolled steel section, which of course increases the dimension of the mouth, and then increasing the outside diameter of the bearing to reduce the running clearance from the normal clearance to a precision clearance. The tighter running tolerance between the bearing and the rail makes it suitable for applications requiring higher positional precision, whilst still offering the high load capacity of the combined roller system and the cost benefits over many other linear motion systems.

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