# Angular contact ball bearings 7200 B and 7300 B (7205B, 7206B, 7305B and more): bore, OD, width, r, r1 + 23 ring-envelope STEP/STL files

> What are the dimensions of a 7204B, 7205B, 7206B, 7305B or 7306B angular contact ball bearing: bore, OD, width and chamfer r?

- Category: Hardware › Bearings, rails & motion
- Kind: Standard part
- Basis: Koyo (JTEKT) catalogue B2001E-3 rows (d, D, B, r, r1), matched on every row against Emerson Bearing's 72xx and 73xx lists; maker product pages linked for CAD
- Page: https://xemstudio.com/objects/angular-contact-ball-bearings-72xx-73xx-b/ · JSON: https://xemstudio.com/api/geometry?object=angular-contact-ball-bearings-72xx-73xx-b · Plain text: https://xemstudio.com/objects/angular-contact-ball-bearings-72xx-73xx-b/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
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**Exact dimensions.** Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part.

## Notes

- Single-row angular-contact ball bearings, 'B' type, 40° contact angle: they carry radial load and axial load in one direction, so they are used in pairs (or in a double-row bearing) on wheel hubs, pumps, gearboxes and steering heads. 72xx is the light series and 73xx the heavier series: the bore code is the last two digits times 5 from 04 up (7205 = 25 mm, 7305 = 25 mm), and at the same bore a 73xx has a larger OD and width than the 72xx.
- Numbers: Koyo (JTEKT) catalogue B2001E-3 for d, D, B, r and r1 (7200B to 7214B, 7217B to 7220B, 7303B to 7314B, 7317B to 7320B), with Emerson Bearing's two lists as the independent check: all 33 Koyo rows match Emerson on d, D and B. Emerson also lists 7215B, 7216B, 7221B to 7226B, 7301B, 7302B, 7315B, 7316B and 7321B to 7328B; those rows have no r / r1 here because Koyo's pages read do not include them. The Koyo rows were matched to bearing numbers by page order; agreement with Emerson on d, D and B for all 33 rows confirms the match (r and r1 are from Koyo only).
- r min and r1 min are the smallest allowed chamfer sizes (the standard's boundary values), not the drawn corner. The ring envelope files round both ring faces with these minimums (r on one face, r1 on the other); the real ring corner can be larger and the thrust-face assignment is not drawn.
- Files: 23 ring envelopes (7200B to 7212B and 7303B to 7312B): one solid ring with the published bore, OD, width and rounded corners. No raceways, balls, cage or ring shoulders (the shoulder heights are mounting dimensions that were not read). Use them as the space the bearing takes in a design.
- Left out: other contact angles (72xx C, 72xx A, 70xx, 719xx), universal / paired sets (DB, DF, DT), sealed and shielded variants (2RS, ZZ), the mounting dimensions (shoulder diameters), load ratings and limiting speeds, inch angular-contact bearings, four-point contact bearings.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| bore d | Ø10 to Ø100 for the 7200B to 7220B and 7303B to 7320B files | solid steel shaft; rotating inner ring under normal load: js5 / k5 / m5 / m6 / n6 depending on load and shaft size (NTN Table 7.2 (1)) | press | 7* |
| bore d, stationary inner ring | same Ø d | shaft class g6 or h6 (g5 / h5 for more accuracy): NTN Table 7.2 (1) | slide | 7* |
| OD D, stationary outer ring | Ø30 to Ø215 per size | cast iron or steel housing bore H7 (G7 for large bearings or big temperature difference); JS6 where precise rotation is needed (ball bearings): NTN Table 7.2 (3) | slide | 7* |
| OD D, rotating outer ring or indeterminate load | same Ø D | housing bore K7 / M7 (indeterminate load), N7 (rotating outer ring, normal to heavy load, mainly ball bearings): NTN Table 7.2 (3) | press | 7* |
| shoulder corners r, r1 | min values per size in the table (7205B: r 1, r1 0.6) | shaft and housing corner radii smaller than r / r1 | designed | 7* |

## Sizes

| bearing | contact angle | bore d, mm | OD D, mm | width B, mm | r min, mm | r1 min, mm | source |
|---|---|---|---|---|---|---|---|
| 7200B | 40° | 10 | 30 | 9 | 0.6 | 0.3 | Koyo + Emerson |
| 7201B | 40° | 12 | 32 | 10 | 0.6 | 0.3 | Koyo + Emerson |
| 7202B | 40° | 15 | 35 | 11 | 0.6 | 0.3 | Koyo + Emerson |
| 7203B | 40° | 17 | 40 | 12 | 0.6 | 0.3 | Koyo + Emerson |
| 7204B | 40° | 20 | 47 | 14 | 1 | 0.6 | Koyo + Emerson |
| 7205B | 40° | 25 | 52 | 15 | 1 | 0.6 | Koyo + Emerson |
| 7206B | 40° | 30 | 62 | 16 | 1 | 0.6 | Koyo + Emerson |
| 7207B | 40° | 35 | 72 | 17 | 1.1 | 0.6 | Koyo + Emerson |
| 7208B | 40° | 40 | 80 | 18 | 1.1 | 0.6 | Koyo + Emerson |
| 7209B | 40° | 45 | 85 | 19 | 1.1 | 0.6 | Koyo + Emerson |
| 7210B | 40° | 50 | 90 | 20 | 1.1 | 0.6 | Koyo + Emerson |
| 7211B | 40° | 55 | 100 | 21 | 1.5 | 1 | Koyo + Emerson |
| 7212B | 40° | 60 | 110 | 22 | 1.5 | 1 | Koyo + Emerson |
| 7213B | 40° | 65 | 120 | 23 | 1.5 | 1 | Koyo + Emerson |
| 7214B | 40° | 70 | 125 | 24 | 1.5 | 1 | Koyo + Emerson |
| 7215B | 40° | 75 | 130 | 25 | — | — | Emerson (d, D, B only) |
| 7216B | 40° | 80 | 140 | 26 | — | — | Emerson (d, D, B only) |
| 7217B | 40° | 85 | 150 | 28 | 2 | 1 | Koyo + Emerson |
| 7218B | 40° | 90 | 160 | 30 | 2 | 1 | Koyo + Emerson |
| 7219B | 40° | 95 | 170 | 32 | 2.1 | 1.1 | Koyo + Emerson |
| 7220B | 40° | 100 | 180 | 34 | 2.1 | 1.1 | Koyo + Emerson |
| 7221B | 40° | 105 | 190 | 36 | — | — | Emerson (d, D, B only) |
| 7222B | 40° | 110 | 200 | 38 | — | — | Emerson (d, D, B only) |
| 7224B | 40° | 120 | 215 | 40 | — | — | Emerson (d, D, B only) |
| 7226B | 40° | 130 | 230 | 40 | — | — | Emerson (d, D, B only) |
| 7301B | 40° | 12 | 37 | 12 | — | — | Emerson (d, D, B only) |
| 7302B | 40° | 15 | 42 | 13 | — | — | Emerson (d, D, B only) |
| 7303B | 40° | 17 | 47 | 14 | 1 | 0.6 | Koyo + Emerson |
| 7304B | 40° | 20 | 52 | 15 | 1.1 | 0.6 | Koyo + Emerson |
| 7305B | 40° | 25 | 62 | 17 | 1.1 | 0.6 | Koyo + Emerson |
| 7306B | 40° | 30 | 72 | 19 | 1.1 | 0.6 | Koyo + Emerson |
| 7307B | 40° | 35 | 80 | 21 | 1.5 | 1 | Koyo + Emerson |
| 7308B | 40° | 40 | 90 | 23 | 1.5 | 1 | Koyo + Emerson |
| 7309B | 40° | 45 | 100 | 25 | 1.5 | 1 | Koyo + Emerson |
| 7310B | 40° | 50 | 110 | 27 | 2 | 1 | Koyo + Emerson |
| 7311B | 40° | 55 | 120 | 29 | 2 | 1 | Koyo + Emerson |
| 7312B | 40° | 60 | 130 | 31 | 2.1 | 1.1 | Koyo + Emerson |
| 7313B | 40° | 65 | 140 | 33 | 2.1 | 1.1 | Koyo + Emerson |
| 7314B | 40° | 70 | 150 | 35 | 2.1 | 1.1 | Koyo + Emerson |
| 7315B | 40° | 75 | 160 | 37 | — | — | Emerson (d, D, B only) |
| 7316B | 40° | 80 | 170 | 39 | — | — | Emerson (d, D, B only) |
| 7317B | 40° | 85 | 180 | 41 | 3 | 1.1 | Koyo + Emerson |
| 7318B | 40° | 90 | 190 | 43 | 3 | 1.1 | Koyo + Emerson |
| 7319B | 40° | 95 | 200 | 45 | 3 | 1.1 | Koyo + Emerson |
| 7320B | 40° | 100 | 215 | 47 | 3 | 1.1 | Koyo + Emerson |
| 7321B | 40° | 105 | 225 | 49 | — | — | Emerson (d, D, B only) |
| 7322B | 40° | 110 | 240 | 50 | — | — | Emerson (d, D, B only) |
| 7324B | 40° | 120 | 260 | 55 | — | — | Emerson (d, D, B only) |
| 7326B | 40° | 130 | 280 | 58 | — | — | Emerson (d, D, B only) |
| 7328B | 40° | 140 | 300 | 62 | — | — | Emerson (d, D, B only) |

## Where the files are

- JTEKT (Koyo), via AIMS Industrial: [Single-row angular contact ball bearings (Cat. No. B2001E-3): 7200B and 7300B, d, D, B, r, r1, contact angle 40](https://aimsindustrial.com.au/cdn/shop/files/Koyo-Angular-Contact-Ball-Bearings-Catalogue-Cover-and-Pages-220-to-239-Selected.pdf) — web — Publisher's page; dimensions are facts
- Emerson Bearing: [7200 series light-duty standard angular contact ball bearings: bore, OD, width, 7200 B to 7226 B](https://products.emersonbearing.com/printitems/standard-angular-contact-ball-bearings/light-duty-standard-angular-contact-ball-bearings?plpver=10) — web — Publisher's page; dimensions are facts
- Emerson Bearing: [7300 series medium-duty standard angular contact ball bearings: bore, OD, width, 7301 B to 7328 B](https://products.emersonbearing.com/printitems/standard-angular-contact-ball-bearings/medium-duty-standard-angular-contact-ball-bearings?plpver=10) — web — Publisher's page; dimensions are facts
- JTEKT (Koyo) product database: [Per-part pages for Koyo angular contact ball bearings (double-row 5304 shown); dimensions, check each part page for CAD downloads](https://koyo.jtekt.co.jp/en/products/detail/?pno=5304) — web — Publisher's page; dimensions are facts
- NTN: [Rolling bearing catalogue, chapter 7 Bearing fits: Table 7.2 (1) shaft tolerance classes and Table 7.2 (3) housing bore tolerance classes for radial bearings (classes 0, 6X, 6)](https://www.ntnglobal.com/en/products/catalog/pdf/2203E_a07.pdf) — web — Publisher's page; dimensions are facts

## Free STEP/STL (23 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/index.json

- 7200B-angular-contact-ball-bearing-envelope-10x30x9: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7200B-angular-contact-ball-bearing-envelope-10x30x9.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7200B-angular-contact-ball-bearing-envelope-10x30x9.stl) — 7200B angular-contact ball bearing ring envelope: bore Ø10, OD Ø30, width 9; one solid ring, corners rounded at r min 0.6 on one face and r1 min 0.3 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7201B-angular-contact-ball-bearing-envelope-12x32x10: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7201B-angular-contact-ball-bearing-envelope-12x32x10.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7201B-angular-contact-ball-bearing-envelope-12x32x10.stl) — 7201B angular-contact ball bearing ring envelope: bore Ø12, OD Ø32, width 10; one solid ring, corners rounded at r min 0.6 on one face and r1 min 0.3 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7202B-angular-contact-ball-bearing-envelope-15x35x11: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7202B-angular-contact-ball-bearing-envelope-15x35x11.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7202B-angular-contact-ball-bearing-envelope-15x35x11.stl) — 7202B angular-contact ball bearing ring envelope: bore Ø15, OD Ø35, width 11; one solid ring, corners rounded at r min 0.6 on one face and r1 min 0.3 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7203B-angular-contact-ball-bearing-envelope-17x40x12: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7203B-angular-contact-ball-bearing-envelope-17x40x12.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7203B-angular-contact-ball-bearing-envelope-17x40x12.stl) — 7203B angular-contact ball bearing ring envelope: bore Ø17, OD Ø40, width 12; one solid ring, corners rounded at r min 0.6 on one face and r1 min 0.3 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7204B-angular-contact-ball-bearing-envelope-20x47x14: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7204B-angular-contact-ball-bearing-envelope-20x47x14.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7204B-angular-contact-ball-bearing-envelope-20x47x14.stl) — 7204B angular-contact ball bearing ring envelope: bore Ø20, OD Ø47, width 14; one solid ring, corners rounded at r min 1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7205B-angular-contact-ball-bearing-envelope-25x52x15: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7205B-angular-contact-ball-bearing-envelope-25x52x15.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7205B-angular-contact-ball-bearing-envelope-25x52x15.stl) — 7205B angular-contact ball bearing ring envelope: bore Ø25, OD Ø52, width 15; one solid ring, corners rounded at r min 1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7206B-angular-contact-ball-bearing-envelope-30x62x16: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7206B-angular-contact-ball-bearing-envelope-30x62x16.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7206B-angular-contact-ball-bearing-envelope-30x62x16.stl) — 7206B angular-contact ball bearing ring envelope: bore Ø30, OD Ø62, width 16; one solid ring, corners rounded at r min 1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7207B-angular-contact-ball-bearing-envelope-35x72x17: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7207B-angular-contact-ball-bearing-envelope-35x72x17.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7207B-angular-contact-ball-bearing-envelope-35x72x17.stl) — 7207B angular-contact ball bearing ring envelope: bore Ø35, OD Ø72, width 17; one solid ring, corners rounded at r min 1.1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7208B-angular-contact-ball-bearing-envelope-40x80x18: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7208B-angular-contact-ball-bearing-envelope-40x80x18.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7208B-angular-contact-ball-bearing-envelope-40x80x18.stl) — 7208B angular-contact ball bearing ring envelope: bore Ø40, OD Ø80, width 18; one solid ring, corners rounded at r min 1.1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7209B-angular-contact-ball-bearing-envelope-45x85x19: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7209B-angular-contact-ball-bearing-envelope-45x85x19.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7209B-angular-contact-ball-bearing-envelope-45x85x19.stl) — 7209B angular-contact ball bearing ring envelope: bore Ø45, OD Ø85, width 19; one solid ring, corners rounded at r min 1.1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7210B-angular-contact-ball-bearing-envelope-50x90x20: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7210B-angular-contact-ball-bearing-envelope-50x90x20.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7210B-angular-contact-ball-bearing-envelope-50x90x20.stl) — 7210B angular-contact ball bearing ring envelope: bore Ø50, OD Ø90, width 20; one solid ring, corners rounded at r min 1.1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7211B-angular-contact-ball-bearing-envelope-55x100x21: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7211B-angular-contact-ball-bearing-envelope-55x100x21.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7211B-angular-contact-ball-bearing-envelope-55x100x21.stl) — 7211B angular-contact ball bearing ring envelope: bore Ø55, OD Ø100, width 21; one solid ring, corners rounded at r min 1.5 on one face and r1 min 1 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7212B-angular-contact-ball-bearing-envelope-60x110x22: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7212B-angular-contact-ball-bearing-envelope-60x110x22.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7212B-angular-contact-ball-bearing-envelope-60x110x22.stl) — 7212B angular-contact ball bearing ring envelope: bore Ø60, OD Ø110, width 22; one solid ring, corners rounded at r min 1.5 on one face and r1 min 1 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7303B-angular-contact-ball-bearing-envelope-17x47x14: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7303B-angular-contact-ball-bearing-envelope-17x47x14.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7303B-angular-contact-ball-bearing-envelope-17x47x14.stl) — 7303B angular-contact ball bearing ring envelope: bore Ø17, OD Ø47, width 14; one solid ring, corners rounded at r min 1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7304B-angular-contact-ball-bearing-envelope-20x52x15: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7304B-angular-contact-ball-bearing-envelope-20x52x15.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7304B-angular-contact-ball-bearing-envelope-20x52x15.stl) — 7304B angular-contact ball bearing ring envelope: bore Ø20, OD Ø52, width 15; one solid ring, corners rounded at r min 1.1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7305B-angular-contact-ball-bearing-envelope-25x62x17: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7305B-angular-contact-ball-bearing-envelope-25x62x17.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7305B-angular-contact-ball-bearing-envelope-25x62x17.stl) — 7305B angular-contact ball bearing ring envelope: bore Ø25, OD Ø62, width 17; one solid ring, corners rounded at r min 1.1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7306B-angular-contact-ball-bearing-envelope-30x72x19: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7306B-angular-contact-ball-bearing-envelope-30x72x19.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7306B-angular-contact-ball-bearing-envelope-30x72x19.stl) — 7306B angular-contact ball bearing ring envelope: bore Ø30, OD Ø72, width 19; one solid ring, corners rounded at r min 1.1 on one face and r1 min 0.6 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7307B-angular-contact-ball-bearing-envelope-35x80x21: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7307B-angular-contact-ball-bearing-envelope-35x80x21.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7307B-angular-contact-ball-bearing-envelope-35x80x21.stl) — 7307B angular-contact ball bearing ring envelope: bore Ø35, OD Ø80, width 21; one solid ring, corners rounded at r min 1.5 on one face and r1 min 1 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7308B-angular-contact-ball-bearing-envelope-40x90x23: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7308B-angular-contact-ball-bearing-envelope-40x90x23.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7308B-angular-contact-ball-bearing-envelope-40x90x23.stl) — 7308B angular-contact ball bearing ring envelope: bore Ø40, OD Ø90, width 23; one solid ring, corners rounded at r min 1.5 on one face and r1 min 1 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7309B-angular-contact-ball-bearing-envelope-45x100x25: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7309B-angular-contact-ball-bearing-envelope-45x100x25.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7309B-angular-contact-ball-bearing-envelope-45x100x25.stl) — 7309B angular-contact ball bearing ring envelope: bore Ø45, OD Ø100, width 25; one solid ring, corners rounded at r min 1.5 on one face and r1 min 1 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7310B-angular-contact-ball-bearing-envelope-50x110x27: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7310B-angular-contact-ball-bearing-envelope-50x110x27.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7310B-angular-contact-ball-bearing-envelope-50x110x27.stl) — 7310B angular-contact ball bearing ring envelope: bore Ø50, OD Ø110, width 27; one solid ring, corners rounded at r min 2 on one face and r1 min 1 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7311B-angular-contact-ball-bearing-envelope-55x120x29: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7311B-angular-contact-ball-bearing-envelope-55x120x29.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7311B-angular-contact-ball-bearing-envelope-55x120x29.stl) — 7311B angular-contact ball bearing ring envelope: bore Ø55, OD Ø120, width 29; one solid ring, corners rounded at r min 2 on one face and r1 min 1 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values
- 7312B-angular-contact-ball-bearing-envelope-60x130x31: [STEP](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7312B-angular-contact-ball-bearing-envelope-60x130x31.step) · [STL](https://xemstudio.com/files/hardware/angular-contact-ball-bearings-72xx-73xx-b/7312B-angular-contact-ball-bearing-envelope-60x130x31.stl) — 7312B angular-contact ball bearing ring envelope: bore Ø60, OD Ø130, width 31; one solid ring, corners rounded at r min 2.1 on one face and r1 min 1.1 on the other (which face is the thrust face is not drawn); no raceways, balls, cage or shoulders; nominal values

## Questions

**What are the dimensions of a 7205B bearing?**

Bore 25, OD 52, width 15 mm, 40° contact angle; r min 1 and r1 min 0.6 mm.

**What are the dimensions of a 7305B bearing?**

Bore 25, OD 62, width 17 mm; r min 1.1 and r1 min 0.6 mm.

**What are the dimensions of a 7206B bearing?**

Bore 30, OD 62, width 16 mm; r min 1, r1 min 0.6.

**What is the difference between 72xx and 73xx angular contact bearings?**

Same bore for the same last two digits, but the 73xx has a larger OD and is wider: 7205B is 25 x 52 x 15, 7305B is 25 x 62 x 17.

**Is there a CAD file for 7205B?**

A ring envelope (bore, OD, width, rounded corners) is on this page as STEP and STL; the full bearing with races and balls is on the maker's own CAD pages linked below.

## Fits with

- [Ball bearings, 683 to 6210 and flanged F6xx (ISO 15)](https://xemstudio.com/objects/ball-bearings-metric/)
- [Deep-groove ball bearings, series 60, 62, 63, 68 and 69: 6000 to 6310 (ISO 15)](https://xemstudio.com/objects/deep-groove-ball-bearings-series/)
- [Double-row angular contact ball bearings 3200 / 5200 and 3300 / 5300 (3204, 3205, 3206, 3305 and more): bore, OD, width + 7 ring-envelope STEP/STL files](https://xemstudio.com/objects/double-row-angular-contact-ball-bearings-32xx-33xx-52xx-53xx/)
- [Tapered roller bearings, metric (30203 to 32328, ISO 355): bore, OD, T, B, C and chamfer r, 15 to 140 mm (302xx, 303xx, 320xx, 322xx, 323xx, 329xx)](https://xemstudio.com/objects/tapered-roller-bearings-metric-iso-355/)
- [Thrust ball bearings 51100 series (51100 to 51130): bore, outside diameter, height, housing washer bore + STEP/STL envelopes](https://xemstudio.com/objects/thrust-ball-bearings-51100-series/)
- [Cylindrical roller bearings NU2xx and NU3xx (NU205, NU206, NU208, NU305, NU310 and more): bore, OD, width, r, Fw + 18 ring-envelope STEP/STL files](https://xemstudio.com/objects/cylindrical-roller-bearings-nu2xx-nu3xx/)
- [Retaining rings DIN 472 (internal, for bores): ring dimensions and groove diameter d2 × width m, 8 to 110 mm](https://xemstudio.com/objects/retaining-rings-din-472-internal/)
- [Pillow block KP08 envelope with a 608 pocket](https://xemstudio.com/objects/pillow-block-kp08/)