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Roller Chain Sprockets - B-Type, 25B Series

Volume Discount

MISUMI

Sprockets with shaft bore and keyway already machined.

inCAD Components

(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.

・Materials

Type	[ M ] Material
SP25B	1045 Carbon Steel Equivalent
SSP25B	304 Stainless Steel Equivalent

[ A ] Accessories: Set Screw(Only for shaft bore specifications Sprockets - 25B Series:Related Image

)

Specifications

Part Number	-	Bore Specification	-	Shaft Bore Dia.
SP25B16 SSP25B22	- -	N S	- -	10 9

Part Number		Shaft Bore Specs.	Shaft Bore Dia.							Dp	Do	H	L	ℓ	Mass (g)	Unit Price
Type	Number of Teeth	Shaft Bore Specs.	S Specification (D_H8)	N Specification (D_H7)						Dp	Do	H	L	ℓ	Mass (g)	S Specification	N Spec. (In Stock)	N Spec. (Other than In Stock)
SP25B	16	S N	9	10	10K	12				32.55	36	25	15	6	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
SSP25B	16	S N	9	10						32.55	36	21	16	6	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

[ ! ]When selecting 10K, shaft bore diameter is Ø10 and keyway width is 4mm (1.8mm in height).

■Shaft Bore Specifications

Shaft Bore Dia. D	Keyway b₂xt₂	Set Screw M
10	3x1.4	4
10K	4x1.8	4
12	4x1.8	5
15, 16	5x2.3	6
20	6x2.8	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.

CAD Download

: 30; 45; 60

Part Number
SP25B16-N-10K
SP25B16-N-10K
SP25B16-N-[10,12]
SP25B16-S-9
SP25B17-N-10K
SP25B17-N-[10,12]
SP25B17-S-9
SP25B18-N-10K
SP25B18-N-[10,12]
SP25B18-S-9
SP25B19-N-10K
SP25B19-N-[10,12]
SP25B19-S-9
SP25B20-N-10K
SP25B20-N-[10,12]
SP25B20-S-9
SP25B21-N-10K
SP25B21-N-[10,12]
SP25B21-S-9
SP25B22-N-[12,15]
SP25B22-S-9
SP25B23-N-[12,15]
SP25B23-S-9
SP25B24-N-[12,15]
SP25B24-S-9
SP25B25-N-[12,15,16]
SP25B25-S-9
SP25B26-N-[12,15,16]
SP25B26-S-9
SP25B28-N-[12,15,16]
SP25B28-S-9
SP25B30-N-[12,15,16]
SP25B30-S-9
SP25B32-N-[15,16,20]
SP25B32-S-10
SP25B34-N-[15,16,20]
SP25B34-S-10
SP25B35-N-[15,16,20]
SP25B35-S-10
SP25B36-N-[15,16,20]
SP25B36-S-10
SP25B38-N-[15,16,18,20]
SP25B38-S-10
SP25B40-N-[15,16,18,20]
SP25B40-S-10
SSP25B16-N-10
SSP25B16-S-9
SSP25B17-N-10
SSP25B17-S-9
SSP25B18-N-10
SSP25B18-S-9
SSP25B19-N-[10,12]
SSP25B19-S-9
SSP25B20-N-[10,12]
SSP25B20-S-9
SSP25B21-N-[12,15]
SSP25B21-S-9
SSP25B22-N-[12,15]
SSP25B22-S-9
SSP25B23-N-[12,15]

Minimum order quantity	Volume Discount	Days to Ship	RoHS	Material	Bore Dia. D (or d) (mm)	Bore Style	Number of Teeth (T)	Shaft Type	Hole Specifications	Keyway b2 x t2
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	10	with Finished Bore	16	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	10K	with Finished Bore	16	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	4×1.8
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	10 ～ 12	with Finished Bore	16	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	16	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	10K	with Finished Bore	17	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	4×1.8
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	10 ～ 12	with Finished Bore	17	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	17	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	10K	with Finished Bore	18	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	4×1.8
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	10 ～ 12	with Finished Bore	18	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	18	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	10K	with Finished Bore	19	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	4×1.8
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	10 ～ 12	with Finished Bore	19	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	19	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	10K	with Finished Bore	20	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	4×1.8
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	10 ～ 12	with Finished Bore	20	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	20	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	10K	with Finished Bore	21	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	4×1.8
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	10 ～ 12	with Finished Bore	21	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	21	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	12 ～ 15	with Finished Bore	22	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	22	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	12 ～ 15	with Finished Bore	23	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	23	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	12 ～ 15	with Finished Bore	24	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	24	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	12 ～ 16	with Finished Bore	25	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	25	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		14 Days or more	10	[Steel] 1045 Carbon Steel	12 ～ 16	with Finished Bore	26	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	26	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	12 ～ 16	with Finished Bore	28	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	28	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	12 ～ 16	with Finished Bore	30	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	30	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	15 ～ 20	with Finished Bore	32	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	32	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	15 ～ 20	with Finished Bore	34	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	34	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	15 ～ 20	with Finished Bore	35	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	35	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	15 ～ 20	with Finished Bore	36	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	36	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		14 Days or more	10	[Steel] 1045 Carbon Steel	15 ～ 20	with Finished Bore	38	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	38	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Steel] 1045 Carbon Steel	15 ～ 20	with Finished Bore	40	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Steel] 1045 Carbon Steel	-	with Machinable Pilot Bore	40	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Stainless Steel] 304 Stainless Steel	10	with Finished Bore	16	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Stainless Steel] 304 Stainless Steel	-	with Machinable Pilot Bore	16	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Stainless Steel] 304 Stainless Steel	10	with Finished Bore	17	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	-	[Stainless Steel] 304 Stainless Steel	-	with Machinable Pilot Bore	17	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Stainless Steel] 304 Stainless Steel	10	with Finished Bore	18	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Stainless Steel] 304 Stainless Steel	-	with Machinable Pilot Bore	18	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Stainless Steel] 304 Stainless Steel	10 ～ 12	with Finished Bore	19	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Stainless Steel] 304 Stainless Steel	-	with Machinable Pilot Bore	19	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Stainless Steel] 304 Stainless Steel	10 ～ 12	with Finished Bore	20	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Stainless Steel] 304 Stainless Steel	-	with Machinable Pilot Bore	20	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Stainless Steel] 304 Stainless Steel	12 ～ 15	with Finished Bore	21	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Stainless Steel] 304 Stainless Steel	-	with Machinable Pilot Bore	21	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Stainless Steel] 304 Stainless Steel	12 ～ 15	with Finished Bore	22	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-
1 Piece(s)	Available	8 Days or more	10	[Stainless Steel] 304 Stainless Steel	-	with Machinable Pilot Bore	22	Standard Pilot Hole	S (Pilot Hole)	-
1 Piece(s)		10 Days or more	10	[Stainless Steel] 304 Stainless Steel	12 ～ 15	with Finished Bore	23	Shaft Bore Machining Configurable	N (New JIS Key + Tap)	-

Product TOP

Basic Information

Sprocket Shape	Shape B	For Chain No. (Chain Pitch)	25B (1/4" pitch)	Chain Type	RS
Surface Treatment	None

Configure

73 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Material
- Steel
  - 1045 Carbon Steel
- Stainless Steel
  - 304 Stainless Steel
Clear
Bore Dia. D (or d)(mm)
10

10K

12

15

16

18

20
Clear
Bore Style
- with Machinable Pilot Bore
- with Finished Bore
Clear
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 Type
- Standard Pilot Hole
- Shaft Bore Machining Configurable
Clear
Hole Specifications
- N (New JIS Key + Tap)
- S (Pilot Hole)
Clear
type
- SP25B
- SSP25B
Clear
CAD
- 2D
- 3D
Clear