FAG6312.P6Deep Groove Ball Bearing 60x130x31 mm P6 ABEC 3 Straight Bore Open Both Sides CN Clearance

Product Description

What this part is:

FAG 6312.P6 is a single-row deep groove ball bearing in the 63 heavy dimension series, built to P6 running accuracy. Bore 60 mm, outside diameter 130 mm, width 31 mm. Both faces are open, the bore is straight, and the outer ring is plain with no snap-ring groove.

Decoding the designation:

The 6 denotes a deep groove ball bearing, the 3 the heavy 63 dimension series, and 12 is the bore code, which multiplied by five gives the 60 mm bore. P6 is the tolerance class, equivalent to ABEC 3. No cage letter follows the base number, so the cage is the standard pressed steel ribbon type; no clearance suffix follows, so the radial internal clearance is CN, the normal group.

What these specs mean in practice:

A deep groove ball bearing carries radial load and moderate thrust in either direction through a deep, closely conforming raceway groove. The 63 series gives a thicker section and a larger ball complement than a 62 in the same bore, which raises load rating at the cost of a lower speed ceiling. P6 tightens bore, outside diameter and running accuracy over normal class, which suits electric motor and pump spindles where shaft runout matters.

Clearance and precision pairing:

CN clearance with P6 accuracy is the general-purpose combination: enough operating clearance for a normal interference fit on the shaft and a moderate temperature differential across the rings, with the tighter geometry of the precision class. The variants coded C3 run a larger clearance for higher temperature gradients or tighter shaft fits, and carry a separate designation.

Quantity and configuration:

One bearing. Open on both faces, so lubricant is supplied by the housing, and relubrication is through the housing rather than through the bearing.

Fitting notes:

Mounting is by even pressure on the ring taking the interference fit, applied square to the face, with the force routed through that ring alone and not across the ball complement. The straight bore mounts directly on the shaft seat, with no adapter sleeve.

Interchange guidance:

SKF 6312/P6 and NTN 6312P6 are the equivalent articles in the same class and clearance group. The FAG 6312-TB-P6-C3 shares the envelope but carries a phenolic cage and C3 clearance, so it is a related size. Shielded and sealed 6312 variants, and snap-ring 6312-N and 6312-NR types, are also related sizes.