SKF7205CP4DGAAngular Contact Ball Bearing – 25 mm ID, 52 mm OD, 15 mm Width, Open, 15°, Light Preload.

Product Description

What this part is

SKF 7205 CD/P4ADGA super-precision single-row angular contact ball bearing, 25 mm bore, 52 mm outside diameter, 15 mm width. Open on both faces, chrome steel rings and balls, thirteen 7.938 mm balls, outer-ring-guided phenolic cage.

Decoding the designation

7205 is the ISO 72 dimension series in the 05 bore code, 25 mm. CD denotes a 15° contact angle in SKF’s super-precision range. P4A is SKF super-precision tolerance — ABEC 7 dimensional accuracy with tightened running accuracy. DGA is SKF’s light preload class for universally matchable bearings; DGB is medium preload and DGC is heavy.

What these specs mean in practice

A 15° contact angle favours speed and radial stiffness over thrust capacity; the 25° ACD version of the same envelope carries more axial load at lower speed. Basic dynamic radial load rating is 13.5 kN and basic static radial load rating 7.21 kN. Limiting speed is 30 000 r/min on grease and 45 000 r/min on oil. Operating temperature range −30 to 110 °C, set by the phenolic cage.

Quantity and configuration

Two pieces, supplied as a universally matchable set. The DGA class produces light preload when the two are mounted together.

Fitting notes

A preloaded set carries no internal clearance value; preload and radial clearance are mutually exclusive settings. Shaft and housing seats are machined to the tolerances SKF specifies for P4A super-precision, and the lubrication method selected against the two limiting speeds above.

Interchange guidance

Same-specification equivalents are the FAG B7205-C-T-P4S-UL and the NSK 7205CTRSULP4. The SKF 7205 ACD/P4ADGA is a related size at 25° rather than 15°, and the 7205 CD/HCP4ADGA is the hybrid ceramic-ball version of the same envelope.