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Sprockets-25B Series (Part Numbers)

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.

Drawing/Specifications
3D Preview
Part Numbers
Catalog

SP25B

[ ! ]Offset between tooth tip and keyway is ±0.5mm.

SSP25B
Sprockets/25B Series:Related Image

[ ! ]Offset between tooth tip and keyway is ±0.5mm.

Type	[ M ]Material
SP25B	S45C Equivalent (Spurs are Induction Hardened)
SSP25B	SUS304 Equivalent

[ A ] Accessory: Set Screw
(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)
Type	Nominal	Hub Type	Number of Teeth		S Specification	N Specification(H7)
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							70
			19		9	10	10K	12				38.58	42	28						90
			20		9	10	10K	12				40.59	44							90
			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							210
			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)
Type	Nominal	Hub Type	Number of Teeth		S Specification	N Specification(H7)
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						70
			19		9	10	12		38.58	42	26						90
			20		9	10	12		40.59	44	28						90
			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

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*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.

CAD Download

: 30; 60; 90

Part Number

Part Number	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

Product TOP

Basic Information

Sprocket Shape	Shape B	Nominal	25	Number of Strands	Single Strand
Chain Type	RS	Surface Treatment	Not Provided

Configure

72 Part Numbers

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Completed

Specification/Dimensions

Number of Teeth(T)
16

17

18

19

20

21

22

23

24

25

26

28

30

32

34

35

36

38

40
Clear
Shaft Bore Dia. D (or d)(mm)
10

10K

12

15

16

20
Clear
Material
- Steel
  - S45C Equivalent
- Stainless Steel
  - SUS304 Equivalent
Clear
Type
- Pilot Bore Type
- Shaft Bore Machined Type
Clear
Shaft Type
- Standard Pilot Bore
- Shaft Bore Machining Configurable
Clear
Bore Specification
- N (New JIS Key + Tap)
- S (Pilot Bore)
Clear
type
- SP25B
- SSP25B
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

4 Day(s) or Less

6 Day(s) or Less

10 Day(s) or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

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Sprockets-25B Series (Part Numbers)

(i)Caution

Specifications

Part Number

Basic Information

Configure

Specification/Dimensions

Number of Teeth(T)

Shaft Bore Dia. D (or d)(mm)

Material

Type

Shaft Type

Bore Specification

type

CAD

Days to Ship

Specify Alterations

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Complementary Products

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