LM869448-410 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 LM869448-410 model number is decoded

In SKF catalogue PUB BU/P1 17000, LM869448 appears as SKF LM 869448/410: an open, single-row tapered roller bearing in the LM869400-series, supplied with a pressed-steel cage as standard.Numbering ties the bearing to its inch-series envelope: LM869448 means a cone and cup matched pair in the LM869400-series series — which is why the 431.8×571.5×74.612 mm outline swaps dimensionally with other inch-series bearings of the same code. The SKF catalogue adds the ISO 355 dimension-series code after the bare number (e.g. ); it is the dimensional series, not a separate part number. Selection arithmetic: the C0/C ratio is about 2.23 (static 2550 kN against dynamic 1145 kN), typical of a tapered roller sized for axial capacity, and the 204 kN fatigue load limit Pu is the equivalent-load floor used in the life calculation. Because the contact line is tapered, one LM869448 reacts thrust in a single direction; bidirectional shafts need an O or X pair, and a rotating cone on a 431.8 mm shaft typically takes a m6 seat with an H7 housing bore. Cross-section geometry: the 69.8 mm half-section ((571.5−431.8)/2) of this LM800-series unit places the roller large-end pitch diameter at roughly 501 mm, and the 74.612 mm axial width is split between cone (41 mm) and cup rib (34 mm) — a geometry that sets the contact angle and, with the 49000 g rotating cone mass, the critical speed at which cage-roller imbalance begins. The cup reference 410 is structural, not a suffix: it identifies the outer ring that, combined with the LM 869448 cone, produces the 431.8/571.5/74.612 mm envelope catalogue-listed as LM869448. Quote the cup number in full when ordering — the LM869400-series tables contain other cups that fit the same cone but change the bearing.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 431.8 mm bore the cone mass is high enough that cocking during mounting damages the cage and rib; guide the ring square, confirm seat contact around the full circumference, and re-check setting after the first thermal cycle of the paired set.
• The LM869400-series inch series at 431.8 mm bore (571.5×74.612 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.
• O (back-to-back) pairs are stiffer against moments, X (face-to-face) pairs tolerate misalignment and thermal growth better; choosing the arrangement from the 2D drawing rather than the actual shaft thermal expansion is a common LM869448 mounting error.
• The tapered contact angle creates an induced axial load under pure radial force; include it in the LM869448 rating calculation (and account for it in both bearings of a pair) or the unloaded bearing skids its rollers.
• The 49000 g mass and 74.612 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 LM869448.
• The 1145/2550 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 LM869448 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF LM 869448/410 designation when purchasing and match the execution to the mounting arrangement.