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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 to determine by removing knobs. It is known US Stella 3000 has B, but JP Stella 3000 has A.
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 50-400 (Conquest, original) | Calcutta, CT, TE, D | 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 | ||
| Ocea Jigger (02, NR, EV) | None | ||
|
Regular sized Spinning reels |
03, 07 10 13 18Stella1000-4000 (JP) | Stella FA FI FE FD 1000-2500 | A |
| Stella FA, FD 3000, 4000 | B | ||
| 12, 16, 19Vanquish1000-4000 | 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 | |
| 13, 08Stella SW4000-30000 | B | ||
| 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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