52414-M 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 52414-M model number is decoded

Listed in SKF 17000 chapter 5, 52414 M is an ISO 104 double-direction thrust ball bearing, 55 mm bore and 250 mm OD on a flat housing seat, standing 107 mm high before installation. Construction is a five-component stack: one central shaft washer with tracks on both faces, two outward-facing housing washers and two cage sets, which lets one housing recess accept thrust from either direction. note the bore of 52414 M is 55 mm by the dimension table: the double-direction series was deliberately aligned to the 51/53 washer sets with shifted codes, so the familiar 04=20 arithmetic does not apply here. M-cage execution: brass machined from solid and ball-centred, giving heavier guidance than the standard pressed retainer at the top end of the thrust-ball range. Envelope 55×250×107 mm (2.165×9.843×4.213 in), 97.5 mm radial section, C 234 kN, C0 550 kN, Pu 19.3 kN. reference speed 800 r/min (thermal) and limiting speed 1,100 r/min (mechanical), catalogue mass 9700 g. Capacity density: 234 kN C from 9.700 kg of bearing steel gives about 24.1 kN per kilogram; static density is correspondingly 56.7 kN/kg at C0 550 kN. Bore-to-OD planning: OD 250 over bore 55 is a 4.55× step for this size, and the 107 mm height gives a bore/height ratio of 0.51; use these ratios when the housing recess around the 55 mm shaft is the first constraint. Pitch-diameter arithmetic: dm = (55+250)/2 = 152.5 mm; at the 1,100 r/min limiting speed that corresponds to roughly 168k mm·r/min, the figure used when comparing cage speed demand across the thrust-ball series. Light-load floor: Pu = 19.3 kN is the equivalent-load threshold below which the SKF adjusted-life equation credits very long life for 52414 M; the number is 8 % of the 234 kN dynamic rating. Section proportions: the 97.5 mm radial section compares with 55 mm of bore (section/bore ≈ 1.77) and the 107 mm height is 1.10× that section — the proportions that identify the 52400 envelope at a glance. Heavy double-direction note: the M suffix on a 52/54-series bearing means both ball-cage assemblies are machined brass and ball-centred for the largest bidirectional positions; both cage sets share the same lubrication requirement, so the oil or grease feed must reach the upper as well as the lower track on vertical shafts. With 9700 g rotating partially with the shaft, check the rotor-balance influence of the central shaft washer at speeds approaching 1,100 r/min; the two loose washers do not rotate and contribute no imbalance.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Torque the cover to leave the catalogue axial freedom, never solid: a clamped double-direction stack cannot float to its thermal position, and at 1,100 r/min even a small thermal thrust preload smears the hottest track.
• Service both cage sets together: replacing only the noisy side while leaving the worn 550 kN opposite track in place reproduces the failure within weeks — inspect both shaft-washer faces and both loose washers at removal.
• Do not replace a 52414 with two single-direction 51-series bearings without re-checking the arrangement: envelope heights, seat details and catalogue ratings differ, even at the same 55×250 mm bore and OD.
• 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 52400 unit has no alignment capacity.
• The 234/550 kN figures belong to 52414 M specifically (the double flat brass execution of 52414); suffixed, sphered and counterpart-series order numbers are separate articles, so write the complete designation on the order and the maintenance record.