53314 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 53314 model number is decoded

Listed in SKF 17000 chapter 5, 53314 is an ISO 104 single-direction thrust ball bearing, 70 mm bore and 125 mm OD, with a sphered housing washer and U seat washer, standing 44.2 mm high before installation. The bearing is delivered as separate, interchangeable parts: a ground-bore shaft washer, a loose-bore housing washer and the ball-cage assembly between them, designed for one axial load direction only. 53xxx reads as 5 (thrust ball), 3 (single direction with a sphered housing washer), a 2–4 section digit and the bore code; the U seat washer companion carries the matching three-digit number. reading the ending 14: bore 70 mm (code 14 × 5) for this single-direction size, via the standard exceptions 00/01/02/03 and ×5 above them. no cage suffix means the standard stamped steel retainer — a pressed sheet-metal ball-cage assembly that covers the bulk of the thrust-ball assortment. Envelope 70×125×44.2 mm (2.756×4.921×1.74 in), 27.5 mm radial section, C 135 kN, C0 320 kN, Pu 11.8 kN. Mounted height H1 48 mm includes the U 314 seat washer; the bearing alone is 44.2 mm high. reference speed 1,800 r/min (thermal) and limiting speed 2,600 r/min (mechanical), catalogue mass 2500 g. Speed planning separates the two ceilings mechanically: the pressed cage and balls tolerate 2,600 r/min while thermal balance under catalogue load sets the 1,800 r/min reference; at dm ≈ 97.5 mm the corresponding dn is approximately 254k mm·r/min. Imperial cross-check for procurement drawings: 2.756 in bore, 4.921 in OD, 1.74 in height, and the 2500 g catalogue mass converts to 2.500 kg (88.2 oz). Sizing arithmetic on the 70 mm bore: 135 kN C over the 27.5 mm radial section gives 4.9 kN per section millimetre, and the 44.2 mm stack height is 1.61× that section — proportions typical of a 53300 thrust section. Rating split for documentation: dynamic 135 kN (L10 life), static 320 kN (safety factor s0), fatigue limit 11.8 kN (adjusted life) — three different uses of three different numbers for 53314, none interchangeable with another. Selection figures for 53314: the C0/C ratio is 2.37, Pu 11.8 kN is about 9 % of C, and the catalogue mass works out to roughly 36 g per millimetre of bore; the printed minimum-load factor is A 0.53. Sphered-seating order-number note: the convex back face of the housing washer is finish-ground spherical and is delivered to mate with the separately ordered U seat washer, which presents a flat face to the housing and a concave face to the washer; together they accommodate initial static misalignment, but the pair must be kept clean, greased at the spherical interface and never replaced by a washer-on-flat-steel makeshift. Procurement reminder for this specific page: 53314 and U 314 are two order numbers shipping as two articles; the installed 48 mm H1 rather than 44.2 mm H is the dimension the housing drawing must carry.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Replacement orders must list both 53314 and U 314: the seat washer is a separate article, and a U washer of the wrong size narrows the contact band of the 320 kN static-rated set.
• Dimension the housing to the 48 mm mounted height H1 (bearing plus U 314), not the 44.2 mm bearing height H — confusing the two is a recurring drawing error for the 53-series.
• The shaft washer remains the tight, ground-bore component on the 70 mm shaft; the sphered part is the HOUSING washer, and the U seat washer is the loose flat-backed part — the fitting order is shaft washer and cage set first, then housing washer and U 314 into the register.
• Minimum axial load still applies with factor A 0.53: a self-aligning seat does not prevent ball skidding, so provide spring preload or sufficient rotor weight at light load and speed.
• Ordering discipline for 53314: the catalogue page quotes 53314 plus U 314 and its 135/320 kN ratings as one exact article; bare-number substitutions from another series or brand need a fresh dimension and rating check, not a like-for-like assumption.