NSKPrecision Deep Groove Ball Bearing — Straight Bore, 70 mm ID, 110 mm OD, 20 mm Width, Open, P4 Accuracy, CN Clearance

Product Description

What this part is

An NSK 6014P4 precision deep groove ball bearing with a 70 mm bore, 110 mm outside diameter and 20 mm width. The bearing is open on both faces, single row, with a straight bore and no snap ring groove.

Decoding the designation

The 6 prefix identifies a single-row deep groove ball bearing. 60 is the ISO light dimension series and the bore code 14 gives a 70 mm bore. P4 is the precision class, equivalent to ABEC 7. No closure letter follows the base number, so the bearing is open on both faces, and no clearance suffix appears, so internal clearance is normal, CN.

What these specs mean in practice

A deep groove ball bearing carries radial load with moderate thrust capacity in both directions, unlike an angular contact bearing, which is biased to one direction. P4 accuracy tightens bore and outside diameter tolerance and controls radial and axial runout, so the bearing holds a shaft concentric closely enough for precision spindle and instrument work. Normal clearance suits a standard interference fit on the shaft with a running temperature difference across the rings in the usual range.

Load and speed data

Dynamic and static load ratings, limiting speed and the temperature limit are published in the specification table on this page.

Quantity and configuration

One bearing. Single row, open both faces, no seals, shields or snap ring, supplied without grease packing beyond preservative.

Fitting notes

An open bearing draws its lubrication from the housing, so the housing supplies grease or oil at fitting. Mounting force is applied to the ring being fitted, never transmitted through the balls. P4 accuracy is only realised where the shaft and housing seats are ground to matching tolerance.

Interchange guidance

A 6014 from another maker fits on envelope, and matches functionally where the precision class and internal clearance are the same. A 6014 in normal class, or a 6014 with a C3 clearance suffix, a shield or a seal, is a related size rather than a match for this open P4 CN bearing.