23020 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 23020 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 23020 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 23020 encode the bore: code 20 = 100 mm (code × 5 from 04 upward). The ISO 15 envelope is 150 mm outside diameter and 37 mm width — 3.937 × 5.906 × 1.457 in, with a 25.0 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 k5 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 100 mm-bore 23020 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 37 mm double-row assembly cannot be drifted into position without brinelling.
• The 230 series keeps the outside diameter one step below the 222 medium row at the same bore (150 mm against roughly a size larger), which raises shaft support without growing the housing — the flip side is that its 25.0 mm section concentrates load, so seat finish, shoulder squareness and housing stiffness matter more than on a wider 223 row.
• Housing stiffness governs the 23020: with the load carried on a 150 mm OD but only a 25.0 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 37 mm width.
• Check the shoulder geometry for 23020: a generous fillet on the 100 mm shaft looks strong but stops the 37 mm inner ring seating home; use the catalogue corner-relief radius and provide a withdrawal groove so the 25.0 mm-section outer ring presses flush in the 150 mm housing.
• Large 23020 tapers should be mounted with a hydraulic nut or oil injection: controlled drive-up sets the residual radial clearance on the 37 mm-wide double row, whereas bar-and-spanner force either under-drives (fretting) or over-drives (thermal seizure on first hot run).
• When reusing a sleeve-mounted 23020, inspect the adapter and lock parts together with the bearing: a stretched sleeve or a bent lockwasher tab that let the inner ring creep on the 100 mm journal must be replaced, or the new bearing frets the same seat.
• In a classic two-bearing arrangement the 23020 often serves as the non-locating (floating) bearing, taking radial load while the housing bore lets it drift; it can locate axially in both directions, but sustained pure thrust beyond the catalogue limit unloads one roller row.
• Self-aligning is not a licence to ignore alignment: 23020 accommodates typically around 1° of angular misalignment under normal load (roughly 2° only in favourable, light-load conditions) — the exact figure falls with load, so check the catalogue value rather than designing to the maximum.