HM89446-410 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 HM89446-410 model number is decoded

Fit selection follows the rotating ring — interference on a rotating cone — and two HM89446 units are required to take reversing thrust; keep the induced axial load inside the rated capacity when calculating the pair. Dimensional interchange map: within the HM800 series at 34.925 mm bore, the 76.2 mm OD and 29.37 mm width are fixed by the ISO 355 plan, so any same-code bearing from another brand shares the mounting envelope; the 20.6 mm section height distinguishes this family from a 302 or 322 of the same bore, and the 660 g mass is the minimum—sealed or snap-ring executions add rotating weight above that catalogue baseline. Why the cup reference matters here: in the HM89400-series tables the HM 89446 cone appears against several cup options. HM89446 is the pairing with 410, and that choice — not the cone — fixes the 76.2 mm OD, the raceway track position and the 29.37 mm assembled width.HM89446 is a single-row tapered roller bearing in the HM89400-series inch series: a separable cone-and-cup design for combined radial and one-direction axial load, listed by SKF in SKF catalogue PUB BU/P1 17000.The HM89400-series series assigns 34.925 mm bore, 76.2 mm OD and 29.37 mm width to HM89446; the cone and cup references are not interchangeable with other inch-series pairs even when the bore matches, because the cup profile and rib geometry are series-specific. In SKF suffix language a bare HM89446 is the standard execution; B marks a larger contact angle and Q or J2 mark clearance/cage variants, all quoted separately. At 7,000 r/min reference speed the 20.6 mm-section HM89446 is governed thermally by preload and lubricant flow; grease or oil selection should be made against that value, with 8,500 r/min as the mechanical ceiling.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 34.925 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 HM89446 pair heats, loses setting control and smears the roller-rib contact.
• The HM89400-series inch series at 34.925 mm bore (76.2×29.37 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 HM89446 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.
• When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of HM89446 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
• The 660 g mass and 29.37 mm width mean spacer and abutment faces must be square to the axis within the bearing's own P0 tolerance; a tilted spacer tilts the contact angle and concentrates load on one rib of HM89446.
• The 95.2/106 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 HM89446 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF HM 89446/410 designation when purchasing and match the execution to the mounting arrangement.