7200-NTN bearing: complete specifications & equivalents
The 7200-NTN is a ISO 15 radial bearing sized 10 x 30 x 9 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 10 mm |
| Outer diameter D | 30 mm |
| Width B | 9 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 6 kN |
| Basic static load rating C0 | 2.74 kN |
| Fatigue load limit Pu | 0.21 kN |
| Limiting speed (mechanical) | 28000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 29 g |
| Manufacturer designation | NTN 7200 |
| 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 & 7200-series range
| Bore d | 0.394 in |
|---|---|
| Outer diameter D | 1.181 in |
| Width B | 0.354 in |
| ISO bore code | 00 |
| Radial section height (D−d)/2 | 10 mm |
| Smallest bore in 7200-series | 10 mm |
| Largest outer diameter in 7200-series | 540 mm |
| Width range across 7200-series | 9–85 mm |
| Bore position in 7200-series (smallest first) | 1 of 36 |
| Bore above smallest 7200-series size | 0 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 7200 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×30×9 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 7200-BECBP | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×30×9 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 7200-BEP | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×30×9 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
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 7200-NTN model number is decoded
7200 is the 10 mm bore member of NTN's medium-duty 7200 single-row family, with a 30 mm outside diameter and 9 mm section width. NTN builds the number from 72 is the single-row dimension series (medium-duty 7200 single-row family), then 00 encodes the 10 mm bore (bore code x 5); with no letter after the digits it is the standard 30 deg contact-angle execution — the 40 deg version carries a B. The radial section height here is 10.0 mm, and the catalogue couples that with C 6 kN / C0 2.74 kN. For a 10 mm shaft with combined load, the practical shortlist is this series, its 7300-series heavier section, and — where thrust reverses — a back-to-back pair rather than a single row. After mounting, check axial float or preload with a dial gauge on the shaft end — the specification, not hand feel, decides whether the contact angle works as rated.
Typical equipment & failure modes
Common applications
- small machine-tool spindle and live-centre positions
- high-speed router, grinder and woodworking spindles
- small pump and compressor shafts with combined load
- servo and stepper motor shafts with axial preload
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
- resin-cage cracking on the 7900-series sizes after hot, dry running or solvent attack on the polymer
- edge loading and early spalling from housing bores that are out of round or shoulders that are too small for the ring face
- flaking that starts at the raceway shoulder on the thrust-loaded side when axial load repeatedly exceeds the design share
Selection pitfalls — read before you substitute
- At 10 mm bore the rings are thin-sectioned: press force must go through the ring being fitted, never through the balls, or the first damage is already in the raceway before the machine runs.
- The standard 30 deg bearing and its B (40 deg) sibling share the envelope; picking between them is a load-direction decision, not a quality upgrade.
- A 7200 mounted the wrong way round still turns smoothly by hand; the failure shows up weeks later as raceway flaking on the unloaded-looking side.
- Never use a four-point or double-row bearing as a like-for-like swap for a single 7200 without re-checking axial float, heat and housing width — the kinematics differ.
- A single-row angular contact left loose on the shaft to "help assembly" will fret the seat: the contact angle keeps driving the ring axially under load.
- The 6/2.74 kN ratings and 0.21 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 7200; 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 7200?
7200 is a single-row angular contact ball bearing to ISO 15: 10 mm bore, 30 mm outside diameter, 9 mm width (0.394 x 1.181 x 0.354 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 6 kN, C0 2.74 kN and a 0.21 kN fatigue load limit Pu; the grease limiting speed is 28,000 r/min and the oil rating 37,000 r/min; mass about 29 g.
How is the 7200 designation structured?
72 is the single-row dimension series (medium-duty 7200 single-row family); 00 encodes the 10 mm bore (bore code x 5); with no letter after the digits it is the standard 30 deg contact-angle execution — the 40 deg version carries a B. The 30 mm OD and 9 mm width follow the ISO 15 boundary-dimension plan for that series.
Which axial direction does 7200 support?
One 7200 alone takes thrust in one direction only, along its 30 deg contact angle; reversing thrust calls for a second bearing or a factory-matched DB/DF/DT pair (the catalogue right-hand columns list the paired ratings). Radial load is always carried as a combined load through the angled contact.
What lubrication speeds does NTN print for 7200?
Per NTN Ball and Roller Bearings CAT.No.2203E, the grease limiting speed is 28,000 r/min and the oil rating 37,000 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 7200?
The 10/30/9 mm envelope is ISO 15 interchangeable, but internal geometry — contact angle, osculation, cage and shoulder details — is maker-specific. Re-verify C 6 kN / C0 2.74 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.