Double awọn eso meji fun awọn ẹwọn ẹyọkan meji fun boṣewa Amẹrika
Ẹyọ-Iru C-irin
| Rara. Ehin | Nọmba | De | DI | Dm | A | Wt. Lbs. (Isunmọ) |
| |
| Min | Max. | |||||||
| 12 | 40c12 | 2.170 | 1/2 | 1 | 139/ 64 | 11/2 | .75 | |
| 13 | 40C13 | 2.330 | 1/2 | 1/ 16 | 13/4 | 11/2 | .94 | |
| 14 | 40C14 | 2.490 | 1/2 | 1/8 | 111/ 16 | 11/2 | .91 | |
| 15 | 40C15 | 2.650 | 1/2 | 1/4 | 17/8 | 11/2 | 1.19 | |
| 16 | 40C16 | 2.810 | 1/2 | 3/8 | 2 | 11/2 | 1.34 | |
| 17 | 40C17 | 2.980 | 5/8 | 7/ 16 | 21/8 | 11/2 | 1.5 | |
| 18 | 40C18 | 3.140 | 5/8 | 1/2 | 25/ 16 | 11/2 | 1.8 | |
★ ti pada ti groove grove ni yara fun imukuro pq.
Double-Iru a-irin
| Rara. Ehin | Nọmba | De | Dp | Tẹ | DI | L | c | E | B1 | Wt. (Isunmọ) |
| |
| Min | Max. | |||||||||||
| 15 | DS40A15 | 2.650 | 2.405 | A | 1/2 | 11/4 | 113/ 32 | 11/8 | 113/ 16 | .284 | 1.2 | |
| 16 | DS40A16 | 2.810 | 2.563 | A | 1/2 | 11/4 | 113/ 32 | 11/8 | 2 | .284 | 1.4 | |
| 17 | DS40A17 | 2.980 | 2.721 | A | 1/2 | 15/ 16 | 113/ 32 | 11/8 | 21/8 | .284 | 1.6 | |
| 18 | DS40A18 | 3.140 | 2.879 | A | 1/2 | 11/2 | 113/ 32 | 11/8 | 25/ 16 | .284 | 1.8 | |
| 19 | DS40A19 | 3.300 | 3.038 | A | 5/8 | 111/ 16 | 113/ 32 | 11/8 | 21/2 | .284 | 2.2 | |
| 20 | DS40A20 | 3.460 | 3.196 | A | 5/8 | 13/4 | 113/ 32 | 11/8 | 25/8 | .284 | 2.6 | |
| 21 | DS40A21 | 3.620 | 3.355 | A | 5/8 | 13/4 | 113/ 32 | 11/8 | 225/ 32 | .284 | 2.9 | |
| 22 | DS40A22 | 3.780 | 3.513 | A | 5/8 | 113/ 16 | 113/ 32 | 11/8 | 215/ 16 | .284 | 3.0 | |
| 23 | DS40A23 | 3,940 | 3.672 | A | 5/8 | 21/ 16 | 113/ 32 | 11/8 | 23/ 32 | .284 | 3.5 | |
| 24 | DS40A24 | 4.100 | 3.831 | A | 5/8 | 21/4 | 113/ 32 | 11/8 | 217/ 64 | .284 | 4.0 | |
Ilọpo meji-taper rosed-irin
| Rara. Ehin | Nọmba | Iwọn burking | De | Dp | D1 | Tẹ | L1 | c | E | L2 | B1 | Wt. Rim nikan |
| |
| Min | Max. | |||||||||||||
| 19 | DS40TB19H | 1215 | 3.300 | 3.308 | 1/2 | 1/4 | A | 113/ 32 | 11/8 | 21/2 | 11/2 | .284 | 1.1 | |
| 20 | DS40TB20H | 1215 | 3.460 | 3.196 | 1/2 | 1/4 | A | 113/ 32 | 11/8 | 25/8 | 11/2 | .284 | 1.3 | |
| 21 | DS40TB21H | 1615 | 3.620 | 3.355 | 1/2 | 5/8 | A | 113/ 32 | 11/8 | 225/ 32 | 11/2 | .284 | 1.3 | |
| 23 | Ds40b23H | 1615 | 3.940 | 3.672 | 1/2 | 5/8 | A | 113/ 32 | 11/8 | 23/ 32 | 11/2 | .284 | 1.5 | |
| 24 | DS40TB24h | 1615 | 4.100 | 3.831 | 1/2 | 5/8 | A | 113/ 32 | 11/8 | 217/ 64 | 11/2 | .284 | 1.7 | |
Double awọn sprackets kìwọn meji ni a ṣe apẹrẹ meji iru awọn ẹwọn oludilẹ-okun meji-okun meji-okun, eyi ni ibiti orukọ "ilọpo meji nikan" wa lati. Ni gbogbogbo awọn splacks wọnyi jẹ ara ṣugbọn awọn mejeeji taup bucked ati qd ara wa jade bi ibeere booteemrs. Awọn eso kekere wa meji ni iṣelọpọ pẹlu eyin ti o nira ati ni awọ atilẹba tabi ti a bo dudu fun iṣẹ ti o ga julọ ati resistance kekere diẹ. Awọn titobi ọja ti awọn sprackets awọn sprockets ti ko ilọpo meji wa lati Ansi # 40 - # 80 / Din06b-16B ṣugbọn awọn iwọn afikun ni a le ṣelọpọ lori ibeere. Nkankan ṣe akiyesi lati ṣe akiyesi ni pe botilẹjẹpe awọn sprack awọn nkan wọnyi jẹ awọn eso meji ti wọn kii yoo ṣaju sq ilọpo meji.
