23030 bearing: complete specifications & equivalents

Specification table

Source: ISO 15 boundary-dimensions standard · extracted 2026-09-24

Standard-interchange bearing: dimensions per ISO 15; CN clearance, P0 tolerance and a stamped-steel cage are catalogue defaults unless the supplier states otherwise, and mass is a geometry-derived estimate. Brand catalogue load ratings and limiting speeds for 23030 are being backfilled — use the inquiry form for certified values.

Cross references & equivalents

No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.

How the 23030 model number is decoded

In the 23000-series (ISO 15 dimension series) the leading 2 marks a double-row spherical roller and the last two digits of 23030 encode the bore: code 30 = 150 mm (code × 5 from 04 upward). The ISO 15 envelope is 225 mm outside diameter and 56 mm width — 5.906 × 8.858 × 2.205 in, with a 37.5 mm radial section height. Two rows of symmetrical barrel rollers on a common sphered outer raceway self-align to shaft deflection while carrying heavy radial load and bidirectional axial load. Typical catalogue practice for a rotating inner ring is a m6 shaft seat, H7 housing and C3 internal clearance; K variants use a 1:12 tapered bore on an adapter sleeve — verify against the mounting arrangement.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The large 150 mm-bore 23030 mounts with real force: use induction heating or hydraulic drive-up on the tapered seat, measure residual clearance in micrometres, and plan lifting fixtures — the 56 mm double-row assembly cannot be drifted into position without brinelling.
• The 230 series (ISO 15 dimension series 30) pairs a wide 56 mm section with a compact 225 mm OD at 150 mm bore — the radial envelope is one step smaller than the 222 medium series, so it carries heavy radial load in restricted housing space; it is not dimensionally interchangeable with a 222 or 223 row on the same bore, so verify OD and width before substitution.
• Housing stiffness governs the 23030: with the load carried on a 225 mm OD but only a 37.5 mm radial section feeding it, a soft or ribbed thin housing lets the outer ring flex and the sphered raceway misreads it as misalignment — support the housing boss fully around the 56 mm width.
• The 56 mm-wide 23030 seats against shaft and housing shoulders whose fillet must clear the bearing chamfer: keep the corner radius small enough that the 150 mm bore and 225 mm OD faces abut square — an undercut beats an oversized radius, which lifts the ring and edge-loads the 37.5 mm section.
• For a cylindrical-bore 23030, warm the inner ring to 80–100 °C (induction heater, never a flame) and slide it dry to the shoulder of the 150 mm shaft; cooling creates the interference, while hammering cold through the 225 mm assembly dents the sphered raceways.
• Relubricate 23030 through the W33 groove while the shaft turns slowly so fresh grease flushes the full 56 mm-wide roller set; pumping grease into a stationary bearing channels it past one row and leaves the other side of the 150 mm bore starved.
• Spherical rollers need a minimum radial load to keep the rollers driven — as a rule of thumb about 2% of the basic dynamic load rating; an unloaded 23030 on an idler or in a cold-start drive will skid and smear, so add preload, reduce the bearing size or use a sealed grease-filled variant.
• Choose the bore type deliberately: plain 23030 takes a cylindrical seat, while the K variant has a 1:12 tapered bore and mounts on an adapter sleeve (H3xx series) over a plain commercial shaft or directly on a tapered journal — the two mounting procedures are not interchangeable.