3585-3525 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB) · extracted 2026-09-28

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch 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 3585-3525 model number is decoded

Cross-section geometry: the 23.0 mm half-section ((87.312−41.275)/2) of this 35800-series unit places the roller large-end pitch diameter at roughly 64 mm, and the 30.162 mm axial width is split between cone (17 mm) and cup rib (14 mm) — a geometry that sets the contact angle and, with the 850 g rotating cone mass, the critical speed at which cage-roller imbalance begins. Housing and abutment design flows from the cup: in 3585 the 3525 cup fixes the 87.312 mm OD, the outer-ring face position and the rib shoulder that the rollers contact under thrust, while the 3585 cone determines the 41.275 mm shaft interface; the 30.162 mm width is the assembled pair value.SKF 3585/3525 belongs to the SKF single-row tapered roller range — the 41.275 mm bore entry in the inch 3500-series, dimensioned 87.312 mm OD and 30.162 mm wide.On the SKF nameplate, 3585 denotes a matched cone-and-cup pair: the designation is not a single number but a cone reference and cup reference joined by a slash, with the 3500-series marking the dimensional series. SKF lists the plain number as the basic execution; letter suffixes such as B denote a steeper contact angle and are different order numbers. Speed planning uses two different ceilings: 6,300 r/min thermal reference and 8,000 r/min mechanical limiting speed. Because the contact line is tapered, one 3585 reacts thrust in a single direction; bidirectional shafts need an O or X pair, and a rotating cone on a 41.275 mm shaft typically takes a k5 seat with an H7 housing bore.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 41.275 mm bore, interference and temperature rise consume clearance inside a preloaded pair; calculate the residual clearance after mounting and at operating temperature — an over-tight 3585 pair heats, loses setting control and smears the roller-rib contact.
• The 320 series at 41.275 mm bore (87.312×30.162 mm) is the low-friction, higher-speed section; it carries less thrust than a 302 of the same bore, so verify the axial load share before swapping.
• At the 126 kN rating of 3585, preload class changes stiffness by tens of percent but also heat generation; select light preload for the 8,000 r/min speed end and heavier preload only where moment stiffness dominates.
• When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of 3585 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
• Open 3585 units need application-supplied sealing and a defined EP lubricant supply; the roller-rib contact is the first to fail when the additive film breaks down.
• The 126/132 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 3585 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 3585/3525 designation when purchasing and match the execution to the mounting arrangement.