

| Type | Material | Surface Treatment | Accessories |
| SP40B | S45C(Tooth Tip Induction Hardening) | - | Set Screw |
| BSP40B | Black Oxide | ||
| SSP40B | SUS304 | - |
| Part Number | Shaft Hole Diameter | Dp | Do | Boss | #L# | Mass (g) | ||||||||||||||||||
| Type | No. of Teeth | N Specification (DH7) | H | L | ||||||||||||||||||||
| (Sprocket) SP40B BSP40B | 9 | 10K | 12 | 14 | 37.13 | 42 | *28 | 22 | 5 | 110 | ||||||||||||||
| 10 | 10K | 12 | 14 | 15 | 16 | 17 | 41.10 | 46 | *32 | 140 | ||||||||||||||
| 11 | 10K | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 45.08 | 51 | *36 | 190 | |||||||||||
| 12 | 10K | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 49.07 | 55 | *40 | 220 | ||||||||||
| 13 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 53.07 | 59 | 37 | 6 | 230 | ||||||||||
| 14 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25* | 57.07 | 63 | 42 | 280 | |||||||||
| 15 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30* | 61.08 | 67 | 46 | 340 | |||||||
| 16 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 65.10 | 71 | 50 | 400 | |||||||
| 17 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 69.12 | 76 | 54 | 460 | ||||||
| 18 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 73.14 | 80 | 57 | 510 | ||||||
| 19 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 77.16 | 84 | 62 | 590 | |||||
| 20 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 81.18 | 88 | 67 | 25 | 7 | 760 | |||
| 21 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 85.21 | 92 | 71 | 850 | |||||
| 22 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 89.24 | 96 | 75 | 950 | |||||
| 23 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 93.27 | 100 | 77 | 1000 | |||||
| 24 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 97.30 | 104 | 63 | 840 | |||||
| 25 | 14 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 101.33 | 108 | 880 | ||||||||
| 26 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 105.36 | 112 | 920 | ||||||||||
| 28 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 113.43 | 120 | 1000 | ||||||||||||
| 30 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 121.50 | 128 | 1100 | ||||||||||||
| 32 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 129.57 | 137 | 68 | 28 | 10 | 1300 | |||||||||
| 34 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 137.64 | 145 | |||||||||||||
| 35 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 141.68 | 149 | 1400 | ||||||||||||
| 36 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 145.72 | 153 | 1500 | ||||||||||||
| 38 | 24 | 25 | 28 | 30 | 32 | 35 | 40 | 153.79 | 161 | 1600 | ||||||||||||||
| 40 | 25 | 28 | 30 | 32 | 35 | 40 | 161.87 | 169 | 1700 | |||||||||||||||
| Part Number | Shaft Hole Diameter | Dp | Do | Boss | ℓ | Mass (g) | ||||||||||||
| Type | No. of Teeth | N Specification (DH7) | H | L | ||||||||||||||
| (Sprocket) SSP40B | 10 | 12 | 15 | 16 | 41.10 | 46 | *32 | 22 | 5 | 140 | ||||||||
| 11 | 15 | 16 | 18 | 20 | 45.08 | 51 | *36 | 190 | ||||||||||
| 12 | 15 | 16 | 18 | 20 | 49.07 | 55 | *40 | 220 | ||||||||||
| 13 | 15 | 16 | 18 | 20 | 53.07 | 59 | 37 | 6 | 230 | |||||||||
| 14 | 15 | 16 | 18 | 19 | 20 | 22 | 24 | 25* | 57.07 | 63 | 42 | 280 | ||||||
| 15 | 15 | 16 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 61.08 | 67 | 46 | 340 | |||||
| 16 | 15 | 16 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 65.10 | 71 | 50 | 400 | ||||
| 17 | 15 | 16 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 69.12 | 76 | 54 | 460 | ||||
| 18 | 15 | 16 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 73.14 | 80 | 57 | 510 | ||||
| 19 | 15 | 16 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 77.16 | 84 | 62 | 590 | ||||
| 20 | 15 | 16 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 81.18 | 88 | 67 | 25 | 7 | 760 | ||
| 21 | 18 | 20 | 22 | 24 | 25 | 28 | 30 | 85.21 | 92 | 71 | 850 | |||||||
| 22 | 18 | 20 | 22 | 24 | 25 | 28 | 30 | 89.24 | 96 | 75 | 950 | |||||||
| 23 | 18 | 20 | 22 | 24 | 25 | 28 | 30 | 93.27 | 100 | 77 | 1000 | |||||||
| 24 | 18 | 20 | 22 | 24 | 25 | 28 | 30 | 97.30 | 104 | 63 | 840 | |||||||
| 25 | 18 | 20 | 22 | 24 | 25 | 28 | 30 | 101.33 | 108 | 880 | ||||||||
| 26 | 20 | 22 | 25 | 30 | 105.36 | 112 | 920 | |||||||||||
| 28 | 20 | 22 | 25 | 30 | 113.43 | 120 | 1000 | |||||||||||
| 30 | 20 | 22 | 25 | 30 | 121.50 | 128 | 1100 | |||||||||||
| 32 | 20 | 22 | 25 | 30 | 129.57 | 137 | 68 | 28 | 10 | 1300 | ||||||||
| 35 | 20 | 22 | 25 | 30 | 141.68 | 149 | 1400 | |||||||||||
| 36 | 20 | 22 | 25 | 30 | 145.72 | 153 | 1500 | |||||||||||
| 40 | 20 | 22 | 25 | 30 | 161.87 | 169 | 1700 | |||||||||||
Set Screws of M6 are attached for sprockets with † mark.
*marks indicate grooves in boss outer diameters.
When 10K selected, Shaft Hole Diameter φ10, Key Groove Width 4mm(Height 1.8mm) are applied.| Shaft Hole Diameter D | Key Groove b2×t2 | Set Screw M |
| 10K·12 | 4×1.8 | 5 |
| 14~17 | 5×2.3 | 6 |
| 18~22 | 6×2.8 | 6 |
| 24~30 | 8×3.3 | 8 |
| 32·35 | 10×3.3 | 8 |
| 40 | 12×3.3 | 8 |
Sprockets/Chains - 40B Series - Chain
Small Idlers
Idler Sprockets with Boss
Tensioner Units
Chain Guides - Channel
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