7211-BE-2RZP bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); 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 7211-BE-2RZP model number is decoded

7211 BE-2RZP is SKF's 55 mm-bore single-row angular-contact ball bearing in the 7200 series, nominal 40° (B) contact angle, 55×100×21 mm to the ISO dimension plan. 40° contact angle (suffix B): the steep standard single-row angle, giving the highest axial capacity at the cost of speed, with a recommended load ratio Fa/Fr ≥ 1. E marks the optimized internal design with an enhanced ball complement and race geometry. glass-fibre reinforced PA66 cage, ball-centred (suffix P), with a 120 °C continuous-temperature ceiling. -2RZ marks non-contact NBR seals on both sides riding in recessed grooves: they keep contamination and the standard grease fill in without lip drag, and P again denotes the PA66 cage. Envelope 55×100×21 mm (2.165×3.937×0.827 in), 22.5 mm radial section height, C 46.2 kN, C0 36 kN, Pu 1.53 kN.reference speed 8,000 r/min (thermal) and limiting speed 6,300 r/min (mechanical), catalogue mass 620 g. Load balance: C0 36 kN against C 46.2 kN gives a 0.78 ratio, typical of a steep-angle axial-oriented design; Pu 1.53 kN enters the SKF adjusted-life equation rather than the basic rating life. Mass and section check: 620 g inside the 55×100×21 mm outline leaves a 22.5 mm radial section, and the 36 kN static rating is 0.78× the dynamic rating — plan static safety and minimum load against those numbers rather than against sister executions. Bore-to-OD planning: OD 100 over bore 55 is a 1.82× step for this size, and the 21 mm width gives a bore/width ratio of 2.62; use these ratios when housing space around the 55 mm shaft is the first constraint. Sealing note: the two non-contact NBR -2RZ seals run in recessed grooves without touching the inner ring, so drag and speed loss stay small while the standard grease fill is retained and coarse dust is excluded; they are not lip-contact seals, so pressure washing and fine slurry still require external housing seals. The uncapped BECBP/BEP executions are the open counterparts.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Reference and limiting speeds are different ceilings: design to both, and remember preload and oil/air cooling move the real thermal limit far from the catalogue reference value.
• At 55 mm bore the k5 seat assumes a steel shaft and housing; aluminium housings grow faster with temperature, so re-check the outer-ring setting when the case is non-ferrous.
• At 55 mm bore the k5 seat assumes a steel shaft and housing; aluminium housings grow faster with temperature, so re-check the outer-ring setting when the case is non-ferrous.
• DB pairs give the highest moment stiffness, DF pairs tolerate misalignment and thermal expansion better, DT shares heavy one-direction thrust; choose from the shaft thermal calculation rather than by habit.
• The steep 40° angle of 7211-BE-2RZP favours thrust-heavy combined loads; for a predominantly radial high-speed position the 25° ACCBM execution of the same size is the alternative order number.
• The non-contact -2RZ seals of 7211-BE-2RZP add little drag but are not contact seals; in wet or fine-dust duty retain external sealing at the housing.