Deep Groove Ball Bearings SKF 6312 NR

The SKF 6312 NR deep-groove ball bearing (60x130x31 mm) offers a space-saving axial locking mechanism within the housing, thanks to its integrated ring groove and retaining ring.

The single-row deep groove ball bearing 6312 NR combines radial load-carrying capacity with a functional housing lock. As an open rolling bearing made from standard 100Cr6 bearing steel, it is suitable for designs where lubricants can circulate freely or where external seals are in place. With a 60 mm bore, 130 mm outer diameter and 31 mm width, this SKF design meets demanding requirements. The integrated sheet steel cage guides the rolling elements within a temperature range of -20 to +150 degrees Celsius.

What is the 6312 NR deep groove ball bearing suitable for in industrial applications?

Design engineers primarily use this rolling bearing when the axial installation space within the housing is limited and complex housing shoulders are to be avoided. The pre-fitted snap ring in the outer ring serves to secure the bearing axially directly against the housing wall. Typical areas of application are found in general mechanical engineering, in designs with limited axial installation space. The bearing primarily absorbs radial loads, but is equally suitable for accommodating axial forces acting from both sides.

What is the function of the ring groove and retaining ring in the 6312 NR deep groove ball bearing?

The designation NR stands for the combination of a ring groove in the outer ring and a matching snap ring. This ring simplifies the housing design, as housing bores can be drilled through cylindrically without the need for a milled shoulder. During assembly, the retaining ring engages with the housing edge and aids axial positioning within the bearing seat. The bearings are manufactured with standard radial clearance and to tolerance class P0/PN or ABEC 1.