Sprockets dùbailte airson dà shlabhraidh shingilte a rèir inbhe Ameireaganach
Stàilinn-C aon-sheòrsa
| Chan eil. Fiaclan | Àireamh | De | DI | Dm | A | Cuideam punnd. (Mu thuairmse.) |
| |
| Min | Uasmhéid. | |||||||
| 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 | |
★ Tha clais falaichte anns a’ mheadhan airson àite a thoirt don t-slabhraidh.
Stàilinn-A Dùbailte Singilte
| Chan eil. Fiaclan | Àireamh | De | Dp | Seòrsa | DI | L | c | E | B1 | Cuideam (Mu thuairmse.) |
| |
| Min | Uasmhéid. | |||||||||||
| 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 | |
Stàilinn-bhusaichte Dùbailte Singilte-Taper
| Chan eil. Fiaclan | Àireamh | Meud a’ Bhusachaidh | De | Dp | D1 | Seòrsa | L1 | c | E | L2 | B1 | Cuideam Iomall a-mhàin |
| |
| Min | Uasmhéid. | |||||||||||||
| 19 | DS40ATB19H | 1215 | 3,300 | 3.308 | 1/2 | 1/4 | A | 113/32 | 11/8 | 21/2 | 11/2 | .284 | 1.1 | |
| 20 | DS40ATB20H | 1215 | 3.460 | 3.196 | 1/2 | 1/4 | A | 113/32 | 11/8 | 25/8 | 11/2 | .284 | 1.3 | |
| 21 | DS40ATB21H | 1615 | 3.620 | 3.355 | 1/2 | 5/8 | A | 113/32 | 11/8 | 225/32 | 11/2 | .284 | 1.3 | |
| 23 | DS40ATB23H | 1615 | 3.940 | 3.672 | 1/2 | 5/8 | A | 113/32 | 11/8 | 23/32 | 11/2 | .284 | 1.5 | |
| 24 | DS40ATB24H | 1615 | 4.100 | 3.831 | 1/2 | 5/8 | A | 113/32 | 11/8 | 217/64 | 11/2 | .284 | 1.7 | |
Tha sprocaidean dùbailte singilte air an dealbhadh gus dà shlabhraidh rolair aon-shnàthainn a ruith, agus is ann às an seo a thàinig an t-ainm "dùbailte singilte". Mar as trice, tha na sprocaidean seo de stoidhle A ach tha an dà chuid le busaichean teipichte agus stoidhle QD rim faighinn air an dèanamh mar iarrtas luchd-ceannach. Tha na sprocaidean dùbailte singilte againn air an dèanamh le fiaclan cruaidhte agus tha dath tùsail no còmhdach ocsaid dubh aca airson coileanadh nas fheàrr agus beagan strì an aghaidh creimeadh. Tha meudan stoc de sprocaidean dùbailte singilte a’ dol bho ANSI #40 - #80/DIN06B-16B ach faodar meudan a bharrachd a dhèanamh air iarrtas. Is e rud cudromach a thoirt fa-near, ged a tha na sprocaidean seo nan sprocaidean dùbailte, nach bi iad a’ cleachdadh slabhraidh rolair dà-shnàthainn.
