33205 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.1 metric single-row TRB) · extracted 2026-09-26

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.1 metric single-row TRB); 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 33205 model number is decoded

Ordering number SKF 33205 in SKF catalogue PUB BU/P1 17000 denotes a single-row tapered roller bearing for a 25 mm shaft, medium wide section, with an open pressed-steel-cage execution and one-direction axial capacity.Reading the designation: the leading 3 marks a single-row tapered roller bearing, the 32 is the ISO 355 diameter/width series (medium wide section), and the last two digits encode the 25 mm bore; the 52 mm OD and 22 mm width follow the ISO 355 general plan. In SKF suffix language a bare 33205 is the standard execution; B marks a larger contact angle and Q or J2 mark clearance/cage variants, all quoted separately. Selection arithmetic: the C0/C ratio is about 0.97 (static 56 kN against dynamic 57.9 kN), typical of a tapered roller sized for axial capacity, and the 6 kN fatigue load limit Pu is the equivalent-load floor used in the life calculation. A single 33205 locates the shaft in one axial direction only; mount it against a second bearing in O (back-to-back) or X (face-to-face) arrangement, and set the running clearance by the mounting procedure — not by feel.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At a 25 mm bore the thin cone and cup are easily distorted by an over-tight shaft nut; check seat runout (target Ra ≤ 0.8 µm) and torque the locknut progressively — a pinched 33205 shows up as gearbox vibration long before it fails.
• The 332 series at 25 mm bore (52×22 mm) is the wide medium-section choice — more capacity than 30205 in the same OD class but a wider footprint; re-check housing width and pair setting before substituting.
• When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of 33205 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
• When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of 33205 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
• The 33205 shares its ISO 355 envelope with other tapered bearings of the same code but is not a drop-in replacement for a ball bearing: it cannot run effectively under pure radial load without a minimum axial load, and a deep-groove bearing cannot replace its combined-load duty.
• The 57.9/56 kN ratings are SKF catalogue 17000 values for the basic execution; SKF can revise internal geometry without changing the order number, so keep the catalogue version (PUB BU/P1 17000/1 EN, 2018) with the specification and re-verify for critical drives.
• SKF lists several executions of 33205 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 33205 designation when purchasing and match the execution to the mounting arrangement.