418-414 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 418-414 model number is decoded

The SKF 418/414 is a 38.1×88.5×26.988 mm single-row tapered roller bearing — an inch-series entry with an asymmetric raceway cut for thrust capacity and separable mounting.The code breaks down as cone/cup: the numbers before and after the slash identify the inner and outer ring sets, and the series prefix (415-series) ties the pair to a specific boundary plan. Dimensions 38.1×88.5×26.988 mm are the converted metric envelope. SKF lists the plain number as the basic execution; letter suffixes such as B denote a steeper contact angle and are different order numbers. With C 123 kN and C0 114 kN, the 418 pair-sizing check is dominated by the axial share: keep the equivalent load P below the rating at the required L10, remembering one bearing alone cannot cover reversing thrust at 8,500 r/min. Note the minimum-axial-load requirement: at light radial load and high speed the rollers of 418 must still be held into the rib contact, which is another reason the catalogue recommends paired mounting with controlled setting. Cross-section geometry: the 25.2 mm half-section ((88.5−38.1)/2) of this 41800-series unit places the roller large-end pitch diameter at roughly 63 mm, and the 26.988 mm axial width is split between cone (15 mm) and cup rib (12 mm) — a geometry that sets the contact angle and, with the 830 g rotating cone mass, the critical speed at which cage-roller imbalance begins. From a specification standpoint the 414 cup is the controlling half of 418 for housing design — it sets the 88.5 mm OD and the outer abutment diameter — while the 418 cone controls shaft fit at the 38.1 mm bore; the 26.988 mm width is the result of the two together.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 38.1 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 418 pair heats, loses setting control and smears the roller-rib contact.
• The 415-series inch series at 38.1 mm bore (88.5×26.988 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.
• A single 418 cannot locate the shaft axially in both directions; mounting it singly on a reversing-thrust shaft leaves one direction uncontrolled — always use an O or X matched pair for bidirectional location.
• A single 418 cannot locate the shaft axially in both directions; mounting it singly on a reversing-thrust shaft leaves one direction uncontrolled — always use an O or X matched pair for bidirectional location.
• Catalogue reference speed and limiting speed are different limits: the 6,700 r/min reference is a thermal criterion under load, while the 8,500 r/min limiting value is the mechanical ceiling — observe both.
• The 123/114 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 418 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 418/414 designation when purchasing and match the execution to the mounting arrangement.