M86649-610 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 M86649-610 model number is decoded

Speed envelope and thermal behaviour: at 8,500 r/min thermal reference, the 30.162 mm bore shaft runs at a dn of 256k, and the 17.1 mm section dissipates heat through the cup-to-housing contact path; the 11,000 r/min mechanical ceiling reflects cage strength, and the 340 g spinning cone contributes gyroscopic moment under rapid speed reversal. From a specification standpoint the 610 cup is the controlling half of M86649 for housing design — it sets the 64.292 mm OD and the outer abutment diameter — while the M 86649 cone controls shaft fit at the 30.162 mm bore; the 21.433 mm width is the result of the two together.In SKF catalogue PUB BU/P1 17000, M86649 appears as SKF M 86649/610: an open, single-row tapered roller bearing in the M86600-series, supplied with a pressed-steel cage as standard.Numbering ties the bearing to its inch-series envelope: M86649 means a cone and cup matched pair in the M86600-series series — which is why the 30.162×64.292×21.433 mm outline swaps dimensionally with other inch-series bearings of the same code. 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: 8,500 r/min thermal reference and 11,000 r/min mechanical limiting speed. Because the contact line is tapered, one M86649 reacts thrust in a single direction; bidirectional shafts need an O or X pair, and a rotating cone on a 30.162 mm shaft typically takes a k5 seat with an H7 housing bore.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 30.162 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 M86649 pair heats, loses setting control and smears the roller-rib contact.
• The M86600-series inch series at 30.162 mm bore (64.292×21.433 mm) follows the Timken cone/cup convention; substitutions must match both the cone and cup reference exactly — interchanging with another series or a metric 3xxxx bearing of the same bore changes OD, width and contact angle, so re-run the pair setting and shoulder-diameter checks before swapping.
• Do not mix brands or executions inside one M86649 pair — matched sets are ground for a specific setting, and pairing a SKF basic unit with a different suffix variant will not share the setting evenly.
• The tapered contact angle creates an induced axial load under pure radial force; include it in the M86649 rating calculation (and account for it in both bearings of a pair) or the unloaded bearing skids its rollers.
• Catalogue reference speed and limiting speed are different limits: the 8,500 r/min reference is a thermal criterion under load, while the 11,000 r/min limiting value is the mechanical ceiling — observe both.
• The 60.4/61 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 M86649 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF M 86649/610 designation when purchasing and match the execution to the mounting arrangement.