53216 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 53216 model number is decoded

Listed in SKF 17000 chapter 5, 53216 is an ISO 104 single-direction thrust ball bearing, 80 mm bore and 115 mm OD, with a sphered housing washer and U seat washer, standing 29.5 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 16: bore 80 mm (code 16 × 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 80×115×29.5 mm (3.15×4.528×1.161 in), 17.5 mm radial section, C 76.1 kN, C0 208 kN, Pu 7.65 kN. Mounted height H1 33 mm includes the U 216 seat washer; the bearing alone is 29.5 mm high. reference speed 2,400 r/min (thermal) and limiting speed 3,200 r/min (mechanical), catalogue mass 1100 g. Pitch-diameter arithmetic: dm = (80+115)/2 = 97.5 mm; at the 3,200 r/min limiting speed that corresponds to roughly 312k mm·r/min, the figure used when comparing cage speed demand across the thrust-ball series. Light-load floor: Pu = 7.65 kN is the equivalent-load threshold below which the SKF adjusted-life equation credits very long life for 53216; the number is 10 % of the 76.1 kN dynamic rating. Imperial cross-check for procurement drawings: 3.15 in bore, 4.528 in OD, 1.161 in height, and the 1100 g catalogue mass converts to 1.100 kg (38.8 oz). Capacity density: 76.1 kN C from 1.100 kg of bearing steel gives about 69.2 kN per kilogram; static density is correspondingly 189.1 kN/kg at C0 208 kN. Speed band width for this size is 800 r/min between reference and limiting (1.33× ratio); lubrication, preload and heat removal decide where inside that band 53216 can actually run. 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: 53216 and U 216 are two order numbers shipping as two articles; the installed 33 mm H1 rather than 29.5 mm H is the dimension the housing drawing must carry.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Dimension the housing to the 33 mm mounted height H1 (bearing plus U 216), not the 29.5 mm bearing height H — confusing the two is a recurring drawing error for the 53-series.
• The sphered housing washer of 53216 MUST run against the U 216 seat washer, a separate order number; mounted bare on a flat register, the convex back makes point contact that gouges the housing under load.
• Replacement orders must list both 53216 and U 216: the seat washer is a separate article, and a U washer of the wrong size narrows the contact band of the 208 kN static-rated set.
• The self-aligning feature is checked at commissioning by hand: with the shaft under no load the assembly must swivel and settle; a stiff spherical seat means dirt, a mismatched U washer, or a register bored off-axis.
• Catalogue ratings are SKF PUB BU/P1 17000 figures for 53216 as the single sphered pressed steel execution; other order numbers of the 53216 size are different products and may carry different ratings or seating geometry — always quote the full designation including the U 216 seat washer when purchasing.