# Angular contact ball bearing

## Geometry

Angular contact ball bearing, 72 and 73 series, bore up to 50 mm. Bore d, outside diameter D, width B and chamfer r are sourced and make the fit. detail = "full": separate rings with a gap, raceways, balls, and the outer ring cut low on one side as the type is. The rolling element size and count, shoulder heights and clearances are proportions for looks, not for design, and never change the fit dimensions. The cage is not drawn. detail = "simple": one solid ring. Axis along Z, centred on the origin.

**For the fit:** the sourced dimensions below. **For looks only, not for design:** every other proportion named above.

## Source

NTN, *Ball and Roller Bearings*, CAT. No. 2203-3/E (2024), <https://www.ntnglobal.com/en/products/catalog/pdf/2203E.pdf>, pp. B-52 to B-57 (PDF pages 128 to 133); checked against the 62 and 63 series of the same catalogue, which have the same boundary dimensions. ISO 15 sets the boundary dimensions of these series.

| Number | d | D | B |
|---|---|---|---|
| 7200 | 10 | 30 | 9 |
| 7201 | 12 | 32 | 10 |
| 7202 | 15 | 35 | 11 |
| 7203 | 17 | 40 | 12 |
| 7204 | 20 | 47 | 14 |
| 7205 | 25 | 52 | 15 |
| 7206 | 30 | 62 | 16 |
| 7207 | 35 | 72 | 17 |
| 7208 | 40 | 80 | 18 |
| 7209 | 45 | 85 | 19 |
| 7210 | 50 | 90 | 20 |
| 7300 | 10 | 35 | 11 |
| 7301 | 12 | 37 | 12 |
| 7302 | 15 | 42 | 13 |
| 7303 | 17 | 47 | 14 |
| 7304 | 20 | 52 | 15 |
| 7305 | 25 | 62 | 17 |
| 7306 | 30 | 72 | 19 |
| 7307 | 35 | 80 | 21 |
| 7308 | 40 | 90 | 23 |
| 7309 | 45 | 100 | 25 |
| 7310 | 50 | 110 | 27 |

Maker names identify the source; this part isn't made by or affiliated with any maker.

Corner chamfers r and the tolerance class below come from the same NTN tables (Table 6.4, pp. A-58 to A-59, ISO 492 normal class).