52313 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-28

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the 52313 model number is decoded

52313 is SKF's 55 mm-bore double-direction thrust ball bearing in the 52300 series to the ISO 104 dimension plan, with a flat housing seating surface, measuring 55×115×64 mm. The unit stacks one central shaft washer (ground bore, tight on the shaft), two outward-facing housing washers and two ball-cage assemblies, reacting axial force in both directions. double-direction 52/54 numbering does NOT decode the bore by the usual single-direction ×5 code — read the 55 mm bore from the dimension table; codes recur across the 522/523/524 sections and systematically trail the 51/53 code values. with no cage suffix this is the standard execution with a stamped sheet-steel ball-cage assembly (pressed cage) — the light, quiet and economical cage for small and medium thrust-ball sizes. Envelope 55×115×64 mm (2.165×4.528×2.52 in), 30.0 mm radial section, C 106 kN, C0 240 kN, Pu 8.8 kN. reference speed 1,600 r/min (thermal) and limiting speed 2,200 r/min (mechanical), catalogue mass 2750 g. Selection figures for 52313: the C0/C ratio is 2.26, Pu 8.8 kN is about 8 % of C, and the catalogue mass works out to roughly 50 g per millimetre of bore; the printed minimum-load factor is A 0.3. Pitch-diameter arithmetic: dm = (55+115)/2 = 85.0 mm; at the 2,200 r/min limiting speed that corresponds to roughly 187k mm·r/min, the figure used when comparing cage speed demand across the thrust-ball series. Mass and section check: 2750 g inside the 55×115×64 mm outline leaves a 30.0 mm radial section, and the 240 kN static rating is 2.26× the dynamic rating — plan static safety and minimum preload against those figures. Minimum-load arithmetic: with dm ≈ 85.0 mm and factor A 0.3, Fam ≈ A·(n·dm/1000)² at the 1,600 r/min reference speed is about 5.5 kN for 52313; below that preload the balls skid and smear the tracks. Section proportions: the 30.0 mm radial section compares with 55 mm of bore (section/bore ≈ 0.55) and the 64 mm height is 2.13× that section — the proportions that identify the 52300 envelope at a glance. Double-direction order-number note: the unit is built around one central shaft washer with a ground bore and tracks on both faces, flanked by two housing washers and two independent ball-cage assemblies; observe the assembly orientation (the two housing washers face outwards) and note that a 52-series unit replaces a mirrored pair of 51-series bearings only after the stack height and seat drawings are re-checked. Life accounting for 52313 is done separately per direction: if duty applies 106 kN C predominantly one way, the idle side's skid risk — not the loaded side's L10 — usually sets the relubrication and preload interval.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Service both cage sets together: replacing only the noisy side while leaving the worn 240 kN opposite track in place reproduces the failure within weeks — inspect both shaft-washer faces and both loose washers at removal.
• Observe the stack order at fitting: shaft washer central, the two housing washers facing outwards with a cage set on each side; the 64 mm total height is not twice a single-direction bearing height, so reuse of old cover dimensions is a trap.
• The double-direction 52313 is one central shaft washer with tracks on both faces, two housing washers and two ball-cage assemblies — a single unit locating the 55 mm shaft axially in both directions instead of a mirrored pair.
• Where shaft and housing cannot be kept square, the sphered 54-series execution of the same bore with two U seat washers is the self-aligning counterpart; the flat 52300 unit has no alignment capacity.
• Catalogue ratings are SKF PUB BU/P1 17000 figures for 52313 as the double flat pressed steel execution; other order numbers of the 52313 size are different products and may carry different ratings or seating geometry — always quote the full designation when purchasing.