SKF7205CDP4ADGASuper-Precision Angular Contact Ball Bearing 25x52x15 mm 15 Degree ABEC 7 Universal Matched Pair Light Preload

Product Description

What this part is

A super-precision angular contact ball bearing in the 7205 size, supplied as a factory-matched universal pair. Bore 25 mm, outside diameter 52 mm, width 15 mm per bearing.

Decoding the designation

7205 — ISO angular contact 72-series: 25 mm bore, 52 mm outside diameter, 15 mm width.
CD — 15° contact angle in the SKF super-precision scheme. The 25° counterpart carries an A prefix, as ACD.
P4A — SKF super-precision class: ISO class 4 dimensional accuracy with class 2 running accuracy, the grade the trade calls ABEC 7.
DGA — matched set, universally ground, light preload. DGB is the moderate-preload grade and DGC the heavy.

What these specs mean in practice

A 15° contact angle is the high-speed end of the angular contact range: less centrifugal ball loading and lower heat generation than a 25° bearing of the same envelope, and proportionally less thrust capacity. Light preload gives the lowest friction and the lowest steady-state temperature rise of the three SKF preload grades, at correspondingly lower axial stiffness than DGB or DGC. Universal grinding means the pair develops that preload from the ground ring faces alone, with no shims or ground spacers required.

Quantity and configuration

2 Pcs — one matched universal pair. The set can be arranged back-to-back, face-to-face or in tandem.

Fitting notes

The preload is ground into the ring faces and is realised only when both inner rings and both outer rings are clamped solidly against their seats. Alignment marks on the outer ring faces set the intended arrangement.

Interchange guidance

Same-envelope 7205 bearings in the ACD 25° design, or at the DGB and DGC preload grades, are related sizes rather than interchanges — the contact angle and the ground face offset both differ. The generic ISO shorthand for this size and angle is 7205 C.