7000 bearing: complete specifications & equivalents
The 7000 is a ISO 15 radial bearing sized 10 x 26 x 8 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 10 mm |
| Outer diameter D | 26 mm |
| Width B | 8 mm |
| Seal / shield | open |
| Internal clearance | CN / C3 available |
| Tolerance class | P0 |
| Cage | brass |
| Operating temperature | -40 to +150 °C |
| Mass (geometry estimate) | 18 g |
| Standard | ISO 15 |
| Catalog version | iso15-ed4-geometry |
| Last verified | 2026-09-24 |
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 7000 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 7000-series range
| Bore d | 0.394 in |
|---|---|
| Outer diameter D | 1.024 in |
| Width B | 0.315 in |
| ISO bore code | 00 |
| Radial section height (D−d)/2 | 8 mm |
| Smallest bore in 7000-series | 10 mm |
| Largest outer diameter in 7000-series | 170 mm |
| Width range across 7000-series | 8–28 mm |
| Bore position in 7000-series (smallest first) | 1 of 23 |
| Bore above smallest 7000-series size | 0 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 7000 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
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 7000 model number is decoded
In the 7000-series (ISO 15 diameter series 0) the last two digits encode the bore: 7000 carries bore code 00 = 10 mm. Codes 00–03 follow the 10/12/15/17 mm exception table rather than code × 5. Outside diameter 26 mm and width 8 mm come from the ISO 15 boundary-dimensions general plan, shared with the 6000 deep-groove envelope. The '7' prefix marks a single-row angular-contact design with an asymmetric raceway and a nominal 40° contact angle (suffix C); a higher-angle variant carries more axial load, a 25° (E / A5) variant runs faster. For combined radial and axial load with a rotating inner ring on a 10 mm shaft, specify a j5 shaft seat with an H7 housing bore — verify against the load direction and magnitude, and pair two units (DB or DF) for bidirectional thrust.
Typical equipment & failure modes
Common applications
- small precision gearboxes
- instrument spindles
- miniature pump rotors
- servo drive shafts
Known failure patterns
- raceway spalling from axial overload exceeding the single-direction thrust rating
- preload loss after a paired set runs loose, letting the balls skid and smear the raceway
- raceway smearing under marginal lubrication at start-up before oil climb reaches the contact
- cage fracture from operation beyond the limiting speed with inadequate lubricant
Selection pitfalls — read before you substitute
- Bore codes 00–03 use the exception table: 7000 fits a 10 mm shaft — the code × 5 mnemonic does not apply below code 04.
- The 70xx extra-light section at 10 mm bore uses a 26 mm OD; axial capacity is lower than a 7200, so do not substitute a failed 72-series spindle bearing with a 70 without re-rating the thrust.
- A single 7000 angular-contact bearing takes axial load in ONE direction only — for bidirectional thrust, mount a matched pair (DB back-to-back or DF face-to-face), never rely on one row.
- The 40° contact angle (suffix C) raises axial capacity but lowers speed versus a 25° (E / A5) variant; for high-speed spindles specify the 25° version, for heavy thrust specify 40°.
Frequently asked questions
What are the dimensions of a 7000 angular-contact bearing?
A 7000 single-row angular-contact ball bearing has a 10 mm bore, 26 mm outer diameter and 8 mm width (0.394 × 1.024 × 0.315 in), per ISO 15 boundary dimensions. It is an open bearing with a nominal 40° contact angle. Geometry-based estimated mass is about 18 g for a brass-cage unit; catalogue masses vary with cage and ball complement.
Why does 7000 not follow the bore-code × 5 rule?
Codes 00–03 use the exception table (10, 12, 15 and 17 mm): 7000 with code 00 has a 10 mm bore. The code × 5 convention starts at code 04 (20 mm).
What is the contact angle of 7000?
The nominal contact angle is 40° (suffix C): a higher angle carries more axial load but limits speed. A 25° (suffix E or A5) variant runs faster and is preferred for high-speed spindles; a 15° (suffix C7) version exists for very-high-speed duty. Confirm the angle and ball complement in the supplier catalogue.
Can a single 7000 take axial load in both directions?
No. A single-row angular-contact bearing carries axial load in one direction only. For bidirectional thrust, mount a matched pair — DB (back-to-back) for a rigid, moment-resisting arrangement with preload class light (L) for speed or heavy (H) for stiffness, DF (face-to-face) for thermal expansion tolerance, or DT (tandem) to share one-direction load.
How does 7000 compare with a deep-groove 6000?
Both share the 10×26×8 mm ISO 15 envelope (8.0 mm radial section), but the angular-contact 7000 has an asymmetric raceway and 40° contact angle: it carries higher combined axial+radial load and runs with controlled preload, but is slower, noisier and needs pairing — it is not a drop-in replacement for a deep-groove 6000.
Reviewed & verified by the MPN Base engineering desk against source catalog iso15-ed4-geometry on 2026-09-24. Read our editorial & correction policy.