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Shimano knob chart
There are two knob sizes for Shimano reels, Shimano A and Shimano B. Most bait casting reels and spinning reels in the size of 1000-C5000 have Shimano A. Large conventional reels and large off-shore spinning reels in 3000-30000 have Shimano B. As you might have noticed, A and B are both used on 3000-5000 models, and you have to check the knob shaft dimensions by removing knobs. It is known US Stella 3000 has B, but JP Stella 3000 has A for 2003 and 2007 models.
Shimano A: Ball bearing size Bottom and top 4mm(inner) x 7mm(outer) x 2.5mm(thickness)
Shimano B: Ball bearing size Bottom: 5mm(inner) x 9mm(outer) x 3mm(thickness)
Top : 4mm(inner) x 9mm(outer) x 4mm(thickness)
| Japan Model | U.S. Export Model | Knob Size | |
| Casting reels | Chronarch CI4 | A | |
| Stile | A | ||
| Grappler | A | ||
| Calcutta Conquest 50-400 | Calcutta, TE, TE-GT | A | |
| Antares | Calais, DC | A | |
| Metanium | Chronarch, Core | A | |
| Aldebaran | Chronarch MG50 | A | |
| Scorpion (original, MG, XT) | Curado 100-200 | A | |
| Cardiff | A | ||
| Speed master | A | ||
| Axis | A | ||
| 11Ocea Calcutta | A | ||
| Engetsu | A | ||
| Curado 300 (H, TypeJ) | B | ||
| Jigger LD 2 speed | B | ||
| Dendo-maru, (Motor Powered) | B | ||
| Calcutta 50-400/XT (1992) | Calcutta A, B | None | |
| Ocea Jigger (02, NR, EV) | None | ||
|
Regular sized Spinning reels |
03, 07 10 13 18 22Stella1000-4000 (JP) | Stella FA FI FE FD FK 1000-C3000 | A |
| Stella FD 3000, 4000, FA4000 (4x9x2.5 bearing at top needed) | B | ||
| 12, 16, 19, 23Vanquish1000-4000 | A | ||
| 08, 11, 15, 20TwinPower1000-4000 | Sustain FH FG FE 1000-2500 | A | |
| 09, 06TwinPowerMg1000-4000 | A | ||
| 11, 08Biomaster1000-C5000 | Stradic FJ, FI 1000-3000 | A | |
| 06BiomasterMG1000-3000 | Stradic FH | A | |
| 08Biomaster L | A | ||
| 09, 05Ultegra1000-C5000 | Symetre FE | A | |
| 10, 07Ultegra Advance1000-4000 | A | ||
| Sephia, SS, Ci4 | A | ||
| Complex | A | ||
| Exsence | A | ||
| Rarenium | A | ||
| Nasci | A | ||
|
Off-shore, SW, large spool spinning |
AcerationSW3000-4000 | A | |
| 19, 13, 08Stella SW4000-30000 | B | ||
| 21, 15, 09TwinPowerSW4000-14000 | B | ||
| 10BiomasterSW6000-8000 | Stradic6000-8000 | B | |
| 08,Biomaster6000-8000 | B | ||
| 14Spheros SW5000-8000 | B | ||
| 09Ultegra6000-8000 | B | ||
| AcerationSW6000-8000 | B | ||
| Super Aero (11, 09, 08) | C | ||
| Power Aero Friegen | B | ||
| Bull's Eye XT | B | ||
| Thunnus 4000-20000 | 43mm long shaft | None | |
| 08Sustain FE 4000-8000 | None | ||
| 01StellaSW HG/PG 4000-20000 | None | ||
| 02TwinPower 4000HG/PG | None | ||
| 98Stella H (4000-10000) | None | ||
| 98TwinPower H (4000-8000) | None |
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