5215S bearing: complete specifications & equivalents
The 5215S is a ISO 15 radial bearing sized 75 x 130 x 41.3 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 75 mm |
| Outer diameter D | 130 mm |
| Width B | 41.3 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 93.5 kN |
| Basic static load rating C0 | 83 kN |
| Fatigue load limit Pu | 5.1 kN |
| Limiting speed (mechanical) | 3200 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1880 g |
| Manufacturer designation | NTN 5215S |
| Standard | ISO 15 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.
Dimensions in inches & 5200S-series range
| Bore d | 2.953 in |
|---|---|
| Outer diameter D | 5.118 in |
| Width B | 1.626 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 27.5 mm |
| Smallest bore in 5200S-series | 10 mm |
| Largest outer diameter in 5200S-series | 150 mm |
| Width range across 5200S-series | 14.3–49.2 mm |
| Bore position in 5200S-series (smallest first) | 16 of 18 |
| Bore above smallest 5200S-series size | 65 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 5215S | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; standard interchange — confirm clearance class and precision with the supplier. |
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 5215S model number is decoded
NTN 5215S belongs to the medium-duty 5200S double-row family: the catalogue boundary dimensions read 75 / 130 / 41.3 mm (bore / OD / width). Decoding 5215S: 52 is the double-row dimension series (medium-duty 5200S double-row family), with 15 encodes the 75 mm bore (bore code x 5), and the trailing S marks the current internal design of the family. The oil rating of 4,300 r/min sits 1,100 r/min above the 3,200 r/min grease figure — a 1.34x step that says how much headroom oil cooling buys. Size selection is usually finished by checking that the C0 of 83 kN covers the maximum static or shock condition with the catalogue safety factor, not only the running load. Set preload or end-play with the pair as a unit and lock the adjustment; a single angular-contact bearing cannot run free like a deep-groove one.
Typical equipment & failure modes
Common applications
- large pump, fan and compressor rotor shafts
- crane and hoist gearbox shafts
- paper-machine roll and calendar drives
- extruder and mixer gearbox output shafts
Known failure patterns
- impact brinelling dents on the 30 deg contact path after a shaft-side hammer blow during mounting, because axial shock travels straight through the contact angle
- thermal runaway from excessive preload: the pair runs hot, grease darkens and the contact ellipse spreads until the raceways smear
- machined-cage land scoring when a high-speed spindle runs past its grease rating and the cage runs dry on its guidance surface
- edge loading and early spalling from housing bores that are out of round or shoulders that are too small for the ring face
- current-erosion pitting on VFD-driven motor shafts, first visible as a grey frosted band across both raceways
Selection pitfalls — read before you substitute
- Bearings of 75 mm bore arrive heavy enough that handling damage (dents from slings, tilting on the shaft) is a real failure precursor — use proper lifting and heating kit.
- The double-row bearing takes reversing thrust in one envelope, but its two contact lines mean more heat than a single row at the same speed — check the thermal balance before copying a single-row speed figure.
- The C0 of 83 kN is a static rating, not a permissible running thrust — sizing continuous axial load from C0 alone is a recurring drawing-office error.
- The C0 of 83 kN is a static rating, not a permissible running thrust — sizing continuous axial load from C0 alone is a recurring drawing-office error.
- Grease rated for deep-groove motor duty is not automatically right at 3,200 r/min with preload; check the grease speed factor against the catalogue figure.
- The 93.5/83 kN ratings and 5.1 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 5215S; internal geometry legitimately differs between manufacturers, so re-verify ratings, contact angle and suffix before substituting another make on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 5215S?
5215S is a double-row angular contact ball bearing to ISO 15: 75 mm bore, 130 mm outside diameter, 41.3 mm width (2.953 x 5.118 x 1.626 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 93.5 kN, C0 83 kN and a 5.1 kN fatigue load limit Pu; the grease limiting speed is 3,200 r/min and the oil rating 4,300 r/min; mass about 1880 g.
How is the 5215S designation structured?
52 is the double-row dimension series (medium-duty 5200S double-row family); 15 encodes the 75 mm bore (bore code x 5), and the trailing S marks the current internal design of the family. The 130 mm OD and 41.3 mm width follow the ISO 15 boundary-dimension plan for that series.
Which axial direction does 5215S support?
5215S is a double-row bearing working like a built-in back-to-back pair: it takes thrust in both directions plus radial load and moment (tilting) load in a single envelope.
What lubrication speeds does NTN print for 5215S?
Per NTN Ball and Roller Bearings CAT.No.2203E, the grease limiting speed is 3,200 r/min and the oil rating 4,300 r/min. These are catalogue ceilings for a correctly mounted bearing with the stated lubricant; preload, fill quantity, ambient heat and paired arrangements all move the real limit.
What should be checked before substituting another make for 5215S?
The 75/130/41.3 mm envelope is ISO 15 interchangeable, but internal geometry — contact angle, osculation, cage and shoulder details — is maker-specific. Re-verify C 93.5 kN / C0 83 kN, the speed figures, contact angle and suffix meaning against the donor catalogue before swapping on a rated drive.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.