small ball bearing miniature ball bearing miniature bearing bearing 688zz micro ball bearing tiny ball bearing mini ball bearing miniature ball
| d | D | 2B | rs min | r1s min | Cr | Cor | Grease | oil | (Approx.) | |
| 100 | 180 | 68 | 2.1 | 1.1 | 212 | 229 | 2 700 |
3 600 |
6.52 | 7220BDT | 100 | 180 | 68 | 2.1 | 1.1 | 233 | 251 | 3 100 |
4 200 |
6.4 | 7220DT |
| 105 | 190 | 72 | 2.1 | 1.1 | 231 | 258 | 2 600 |
3 500 |
7.74 | 7221BDT | 105 | 190 | 72 | 2.1 | 1.1 | 254 | 283 | 3 000 |
4 000 |
7.58 | 7221DT |
| 110 | 200 | 76 | 2.1 | 1.1 | 250 | 289 | 2 500 |
3 300 |
9.08 | 7222BDT | 110 | 200 | 76 | 2.1 | 1.1 | 276 | 315 | 2 800 |
3 800 |
8.9 | 7222DT |
| 120 | 215 | 80 | 2.1 | 1.1 | 269 | 325 | 2 300 |
3 000 |
12.52 | 7224BDT | 120 | 215 | 80 | 2.1 | 1.1 | 297 | 355 | 2 600 |
3 400 |
12.52 | 7224DT |
| 130 | 230 | 80 | 3 | 1.1 | 288 | 360 | 2 100 |
2 700 |
14.3 | 7226BDT | 130 | 230 | 80 | 3 | 1.1 | 320 | 395 | 2 400 |
3 100 |
14.3 | 7226DT |
| 140 | 250 | 84 | 3 | 1.1 | 297 | 390 | 1 900 |
2 500 |
17.56 | 7228BDT | 140 | 250 | 84 | 3 | 1.1 | 330 | 430 | 2 200 |
2 900 |
17.56 | 7228DT |
| 150 | 270 | 90 | 3 | 1.1 | 340 | 470 | 1 800 |
2 400 |
22 | 7230BDT | 150 | 270 | 90 | 3 | 1.1 | 375 | 515 | 2 000 |
2 700 |
22 | 7230DT |
| 160 | 290 | 96 | 3 | 1.1 | 385 | 555 | 1 600 |
2 200 |
27.4 | 7232BDT | 160 | 290 | 96 | 3 | 1.1 | 425 | 615 | 1 900 |
2 500 |
27.4 | 7232DT |
| 170 | 310 | 104 | 4 | 1.5 | 435 | 650 | 1 500 |
2 100 |
34 | 7234BDT | 170 | 310 | 104 | 4 | 1.5 | 480 | 715 | 1 800 |
2 400 |
34 | 7234DT |
| 180 | 320 | 104 | 4 | 1.5 | 450 | 700 | 1 400 |
1 900 |
35.4 | 7236BDT | 180 | 320 | 104 | 4 | 1.5 | 495 | 770 | 1 700 |
2 200 |
35.4 | 7236DT |
| 190 | 340 | 110 | 4 | 1.5 | 445 | 705 | 1 400 |
1 800 |
42.6 | 7238BDT | 190 | 340 | 110 | 4 | 1.5 | 495 | 780 | 1 600 |
2 100 |
42.6 | 7238DT |
| 200 | 360 | 116 | 4 | 1.5 | 495 | 815 | 1 300 |
1 700 |
50.6 | 7240BDT | 200 | 360 | 116 | 4 | 1.5 | 550 | 900 | 1 500 |
2 000 |
50.6 | 7240DT |
