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Sprockets-25B Series (SP25B21-N-10K)
- Volume Discount
In addition to the shaft hole machined type, we also offer shaft hole rough machined products (S specification) that allow for free additional machining.
(i)Caution
- Please check the content on our website as the PDF does not contain the most up-to-date information.
Part Number
Configured Part Number is shown.
SP25B21-N-10K
[ ! ]Offset between tooth tip and keyway is ±0.5mm.
SSP25B
[ ! ]Offset between tooth tip and keyway is ±0.5mm.
| Type | [ M ]Material |
| SP25B | S45C Equivalent (Spurs are Induction Hardened) |
| SSP25B | SUS304 Equivalent |
(Only for shaft bore specifications Ⓝ)
[ ! ]SP25B Series Spurs are not Induction Hardened.
Specifications
| Part Number | − | Shaft Bore Specs. | − | Shaft Bore Dia. |
| SP25B16 | − | N | − | 10 |
| SSP25B16 | − | S | − | 11 |
■Compatible Chain Selection Method >> P.1578
Technical Data of Mechanical Transmission Chain >> P.2243
| Part Number | Shaft Bore Specs. | Shaft Bore Specs. (D) | Dp | Do | H | GD | L | ℓ | X | Z | Mass (g) | |||||||||||||||||||||
| Type | Number of Teeth | S Specification | N Specification(H7) | |||||||||||||||||||||||||||||
| Nominal | Hub Type | |||||||||||||||||||||||||||||||
| SP | 25 | B | 16 | S N | 9 | 10 | 10K | 12 | 32.55 | 36 | 25 | − | 15 | 6 | 2.8 | − | 60 | |||||||||||||||
| 17 | 9 | 10 | 10K | 12 | 34.56 | 38 | 70 | |||||||||||||||||||||||||
| 18 | 9 | 10 | 10K | 12 | 36.57 | 40 | ||||||||||||||||||||||||||
| 19 | 9 | 10 | 10K | 12 | 38.58 | 42 | 28 | 90 | ||||||||||||||||||||||||
| 20 | 9 | 10 | 10K | 12 | 40.59 | 44 | ||||||||||||||||||||||||||
| 21 | 9 | 10 | 10K | 12 | 42.61 | 46 | 100 | |||||||||||||||||||||||||
| 22 | 9 | 12 | 15 | 44.62 | 48 | 30 | 110 | |||||||||||||||||||||||||
| 23 | 9 | 12 | 15 | 46.63 | 50 | 120 | ||||||||||||||||||||||||||
| 24 | 9 | 12 | 15 | 48.65 | 52 | 140 | ||||||||||||||||||||||||||
| 25 | 9 | 12 | 15 | 16 | 50.66 | 54 | 35 | |||||||||||||||||||||||||
| 26 | 9 | 12 | 15 | 16 | 52.68 | 56 | ||||||||||||||||||||||||||
| 28 | 9 | 12 | 15 | 16 | 56.71 | 60 | 150 | |||||||||||||||||||||||||
| 30 | 9 | 12 | 15 | 16 | 60.75 | 64 | 160 | |||||||||||||||||||||||||
| 32 | 10 | 15 | 16 | 20 | 64.78 | 68 | 40 | 20 | 8 | 200 | ||||||||||||||||||||||
| 34 | 10 | 15 | 16 | 20 | 68.82 | 72 | 210 | |||||||||||||||||||||||||
| 35 | 10 | 15 | 16 | 20 | 70.84 | 74 | ||||||||||||||||||||||||||
| 36 | 10 | 15 | 16 | 20 | 72.86 | 76 | 220 | |||||||||||||||||||||||||
| 38 | 10 | 15 | 16 | 20 | 76.9 | 80 | 260 | |||||||||||||||||||||||||
| 40 | 10 | 15 | 16 | 20 | 80.93 | 84 | 270 | |||||||||||||||||||||||||
■Compatible Chain Selection Method >> P.1578
Technical Data of Mechanical Transmission Chain >> P.2243
| Part Number | Shaft Bore Specs. | Shaft Bore Specs. (D) | Dp | Do | H | GD | L | ℓ | X | Z | Mass (g) | |||||||||||||||
| Type | Number of Teeth | S Specification | N Specification(H7) | |||||||||||||||||||||||
| Nominal | Hub Type | |||||||||||||||||||||||||
| SSP | 25 | B | 16 | S N | 9 | 10 | 32.55 | 36 | 21 | − | 16 | 6 | 2.8 | − | 60 | |||||||||||
| 17 | 9 | 10 | 34.56 | 38 | 23 | 70 | ||||||||||||||||||||
| 18 | 9 | 10 | 36.57 | 40 | 25 | |||||||||||||||||||||
| 19 | 9 | 10 | 12 | 38.58 | 42 | 26 | 90 | |||||||||||||||||||
| 20 | 9 | 10 | 12 | 40.59 | 44 | 28 | ||||||||||||||||||||
| 21 | 9 | 12 | 15 | 42.61 | 46 | 30 | 18 | 7 | 100 | |||||||||||||||||
| 22 | 9 | 12 | 15 | 44.62 | 48 | 110 | ||||||||||||||||||||
| 23 | 9 | 12 | 15 | 46.63 | 50 | 120 | ||||||||||||||||||||
| 24 | 9 | 12 | 15 | 48.65 | 52 | 140 | ||||||||||||||||||||
| 25 | 9 | 12 | 15 | 50.66 | 54 | |||||||||||||||||||||
| 26 | 9 | 12 | 15 | 52.68 | 56 | |||||||||||||||||||||
| 28 | 9 | 12 | 15 | 56.71 | 60 | 150 | ||||||||||||||||||||
| 30 | 9 | 12 | 15 | 60.75 | 64 | 160 | ||||||||||||||||||||
| 32 | 10 | 12 | 15 | 64.78 | 68 | 8 | 200 | |||||||||||||||||||
■Shaft Bore Machining Dimension Table
| Shaft Bore Dia. D | Keyway b2 x t2 | Set Screw M |
| 10 | 3x1.4 | 4 |
| 10K | 4x1.8 | 4 |
| 12 | 4x1.8 | 5 |
| 14~17 | 5x2.3 | 6 |
| 18~22 | 6x2.8 | 6 |
| 24~30 | 8x3.3 | 8 |
| 32~38 | 10x3.3 | 8 |
| 40, 42 | 12x3.3 | 8 |
| 45, 50 | 14x3.8 | 10 |
[ ! ]Shaft Bore Sizes are different for the following products.
| Combination | Set Screw M |
| Nominal35, Number of Teeth17, Shaft Dia.25 | 6 |
| Nominal40, Number of Teeth14, Shaft Dia.25 | 6 |
| Nominal40, Number of Teeth15, Shaft Dia.30 | 6 |
| Nominal50, Number of Teeth11~13, Shaft Dia.24 or more | 6 |
Part Number
CAD Data download and 3D preview are not available because the part number has not yet been determined.
- *In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
- Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.
| Part Number |
|---|
| SP25B21-N-10K |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Number of Teeth (T) | Shaft Bore Dia. D (or d) (mm) | Material | Type | Shaft Type | Bore Specification | Keyway b2 x t2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGD 14.32 | 1 Piece(s) | Available | 4 Day(s) or more | 10 | 21 | 10K | [Steel] S45C Equivalent | Shaft Bore Machined Type | Shaft Bore Machining Configurable | N (New JIS Key + Tap) | 4 x 1.8 |
Loading...
Basic Information
| Sprocket Shape | Shape B | Nominal | 25 | Number of Strands | Single Strand |
|---|---|---|---|---|---|
| Chain Type | RS | Surface Treatment | Not Provided |
Please check the type/dimensions/specifications of the part SP25B21-N-10K in the Sprockets-25B Series series.
Specification/Dimensions
-
type
- SP25B
- SSP25B
-
Number of Teeth(T)
-
Shaft Bore Dia. D (or d)(mm)
-
Material
- Steel
- Stainless Steel
- Steel
-
Type
- Pilot Bore Type
- Shaft Bore Machined Type
-
Shaft Type
- Standard Pilot Bore
- Shaft Bore Machining Configurable
-
Bore Specification
- N (New JIS Key + Tap)
- S (Pilot Bore)
-
CAD
- 2D
- 3D
Days to Ship
-
- All
- 4 Day(s) or Less
- 6 Day(s) or Less
- 10 Day(s) or Less
Specify Alterations
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Similar Part Numbers
| Part Number |
|---|
| SP25B17-S-9 |
| SP25B18-N-10K |
| SP25B18-S-9 |
| SP25B21-S-9 |
| SP25B22-S-9 |
| SP25B23-S-9 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Number of Teeth (T) | Shaft Bore Dia. D (or d) (mm) | Material | Type | Shaft Type | Bore Specification | Keyway b2 x t2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGD 8.60 | 1 Piece(s) | Available | 4 Day(s) or more | 10 | 17 | - | [Steel] S45C Equivalent | Pilot Bore Type | Standard Pilot Bore | S (Pilot Bore) | - | |
SGD 12.13 | 1 Piece(s) | Available | 4 Day(s) or more | 10 | 18 | 10K | [Steel] S45C Equivalent | Shaft Bore Machined Type | Shaft Bore Machining Configurable | N (New JIS Key + Tap) | 4 x 1.8 | |
SGD 9.27 | 1 Piece(s) | Available | 4 Day(s) or more | 10 | 18 | - | [Steel] S45C Equivalent | Pilot Bore Type | Standard Pilot Bore | S (Pilot Bore) | - | |
SGD 11.29 | 1 Piece(s) | Available | 4 Day(s) or more | 10 | 21 | - | [Steel] S45C Equivalent | Pilot Bore Type | Standard Pilot Bore | S (Pilot Bore) | - | |
SGD 11.63 | 1 Piece(s) | Available | 4 Day(s) or more | 10 | 22 | - | [Steel] S45C Equivalent | Pilot Bore Type | Standard Pilot Bore | S (Pilot Bore) | - | |
SGD 12.14 | 1 Piece(s) | Available | 4 Day(s) or more | 10 | 23 | - | [Steel] S45C Equivalent | Pilot Bore Type | Standard Pilot Bore | S (Pilot Bore) | - |
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