Cross-brand designation analysis
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Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
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You entered 7003BDB-FY. This table explores the base group 7003; it does not preserve or approve every requested suffix. Search your complete marking first →
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One base designation across loaded brands
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“7003” across 3 loaded brands
At least two brands share the same bore, outside diameter and width. Use Custom Compare when you want to choose exact suffix variants yourself.
Technical comparison
Choose exact variants instead →Brand differences at a glance
| Parameter | SKF7003 CD/P4ADT17 × 35 × 20 mm | NSK7003AWDB17 × 35 × 20 mm | KOYO7003DB FY17 × 35 × 20 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | NSK | KOYO |
| Designation | 7003 CD/P4ADT | 7003AWDB | 7003DB FY |
| Product family | Super-precision angular contact ball bearings | Angular contact ball bearing | Matched pair / Back-to-back / With machined cage |
| Detailed type | Matched set of two super-precision, high-capacity, d design, single row angular contact ball bearings | Angular contact ball bearings | Angular contact ball bearings |
| Bore diameterd | 17 mm | 17 mm | 17 mm |
| Outside diameterD | 35 mm | 35 mm | 35 mm |
| WidthB | 20 mm | 20 mm | 20 mm |
| Basic dynamic load ratingC | 11.1 kN | 11.5 kN | 13.7 kN |
| Basic static load ratingC0 | 6.55 kN | 7.65 kN | 8.25 kN |
| Fatigue load limitPu | 0.275 kN | — | 0.43 kN |
| Limiting speednG | — | — | 18000 r/min |
| Mass≈m | 0.075 kg | — | 0.09 kg |
| Sealing | Without | — | — |
| Cage | — | Pressed steel | — |
| Bearing material | Bearing steel | — | — |
| Lubricant | None | — | — |
| Boundary dimensions | |||
| Individual bearing widthB | — | 10 mm | — |
| Minimum bearing chamferr min. | — | 0.3 mm | — |
| Nominal width of two-bearing assembly2B | — | 20 mm | — |
| Minimum secondary bearing chamferr1 min. | — | 0.15 mm | — |
| Classification | |||
| Official Category Path | — | — | Angular contact ball bearings - Matched pair - Back-to-back - With machined cage |
| Official Classification 1 | — | — | Angular contact ball bearings / Matched pair / Back-to-back / With machined cage |
| Construction | |||
| Nominal contact angleα | — | 30 ° | — |
| Standard cage code | — | W | — |
| Optional cage codes — ratings require separate confirmation | — | (M), T,TYN | — |
| Catalogue matching scope | — | DB, DF, DT | — |
| Cage material and construction | — | Pressed steel | — |
| Construction / arrangement | — | Back-to-back matched pair | — |
| Dimensions | |||
| Contact angle | 15.0 ° | — | — |
| Engineering — Abutment dimensions | |||
| Diameter of shaft abutmentd a | min. 19 mm | — | — |
| Diameter of shaft abutmentd b | min. 19 mm | — | — |
| Diameter of housing abutmentD a | max. 33 mm | — | — |
| Diameter of housing abutmentD b | max. 33.6 mm | — | — |
| Radius of filletr a | max. 0.3 mm | — | — |
| Radius of filletr b | max. 0.2 mm | — | — |
| Position of oil nozzled n | 23.7 mm | — | — |
| Engineering — Calculation data | |||
| Attainable speed for grease lubrication | To be calculated: Single bearing (50000) x speed reduction factor (see table below) | — | — |
| Attainable speed for oil-air lubrication | To be calculated: Single bearing (75000) x speed reduction factor (see table below) | — | — |
| Contact angleα | 15 ° | — | — |
| Ball diameterD w | 5.556 mm | — | — |
| Number of rowsi | 2 | — | — |
| Number of balls (per bearing)z | 12 | — | — |
| Reference grease quantity (per bearing)G ref | 0.54 cm³ | — | — |
| Engineering — Calculation data — Correction factors for preload calculation | |||
| Correction factor dependent on bearing series and sizef | 1 | — | — |
| Correction factor dependent on contact anglef 1 | 1 | — | — |
| Correction factor for hybrid bearingsf HC | 1 | — | — |
| Engineering — Calculation data — Factors for equivalent bearing load calculation | |||
| Calculation factor for equivalent loadsf 0 | 9.1 | — | — |
| Additional factors for equivalent loads | Refer to Notes 1 and 2 below | — | — |
| Engineering — Dimensions | |||
| Shoulder diameter of inner ring (large side face)d 1 | 22.6 mm | — | — |
| Shoulder diameter of inner ring (small side face)d 2 | 22.6 mm | — | — |
| Shoulder diameter of outer ring (large side face)D 1 | 29.3 mm | — | — |
| Chamfer dimensionr 1,2 | min. 0.3 mm | — | — |
| Chamfer dimensionr 3,4 | min. 0.2 mm | — | — |
| Engineering — Engineering specifications | |||
| Universal matching bearing(s) | No | — | — |
| Load-centre geometry | |||
| Single-bearing effective load centrea | — | 12.5 mm | — |
| Matched-pair load-centre spacinga0 (DB) | — | 25 mm | — |
| Logistics | |||
| Product net weight | 0.075 kg | — | — |
| eClass code | 23-05-08-04 | — | — |
| UNSPSC code | 31171531 | — | — |
| Lubrication-qualified speed | |||
| Limiting speed — grease | — | 14000 r/min | — |
| Limiting speed — oil | — | 19000 r/min | — |
| Manufacturer Identity | |||
| Official Class Key | — | — | 020-020-010 |
| Mass reference | |||
| Single-bearing approximate mass (not pair mass) | — | 0.04 kg | — |
| Matched-pair load ratings | |||
| Basic dynamic radial load ratingCr | — | 11500 N | — |
| Basic static radial load ratingC0r | — | 7650 N | — |
| Mounting dimensions — shown arrangement | |||
| Minimum shaft shoulder diameterda min. | — | 19.5 mm | — |
| Maximum housing shoulder diameterDb max. | — | 33.8 mm | — |
| Maximum shaft-side fillet radiusra max. | — | 0.3 mm | — |
| Performance | |||
| Note | Refer to catalogue data or contact SKF for the attainable speeds | — | — |
| Product identity | |||
| Official product category | Super-precision angular contact ball bearings | — | — |
| Official taxonomy path | /products/super-precision-bearings/angular-contact-ball-bearings | — | — |
| Structure group ID | BA1_010 | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | No | — | — |
| Properties | |||
| Contact type | Normal contact (two-point contact) | — | — |
| Number of rows | 2 | — | — |
| Ring type | One-piece inner and outer rings | — | — |
| Design | High-capacity D | — | — |
| Universal matching bearing | No | — | — |
| Matched arrangement | Tandem << | — | — |
| Number of bearings in matched set | 2 | — | — |
| Matched condition (axial clearance/ preload) | Not applicable | — | — |
| Tolerance class | P4A | — | — |
| Material, bearing | Bearing steel | — | — |
| Coating | Without | — | — |
| Indicative carbon footprint for new product | 0.28 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 35 mm |
| B | — | — | 20 mm |
| R(Min.) | — | — | 0.3 mm |
| R1(Min.) | — | — | 0.15 mm |
| Basic Load Ratings : Cr | — | — | 13.7 kN |
| Basic Load Ratings : C0R | — | — | 8.25 kN |
| Fatigue Load Limit : Cu | — | — | 0.430 kN |
| Limiting Speeds(Grease Lub.) | — | — | 18000 min-1 |
| Limiting Speeds(Oil Lub.) | — | — | 23000 min-1 |
| Load Center Spread : A | — | — | 25.3 mm |
| Da(Min.) | — | — | 19.5 mm |
| Db(Max.) | — | — | 33.8 mm |
| Ra(Max.) | — | — | 0.3 mm |
| Rb(Max.) | — | — | 0.15 mm |
| Mass(Refer.) | — | — | 0.090 kg |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.