I bought MISUMI chains, but why can't I use them on my original sprocket?

Please confirm the specifications of the original sprocket and chain. Specification series number may not match. In addition, there are two specifications: A series and B series in China. The two specifications of sprocket chain are not universal.

Does the sprocket need routine maintenance after installation and use?

The chain needs regular maintenance after installation and use. These include daily lubricant application, confirmation of chain slack. After the sprocket is severely worn, the new sprocket and the new chain should be replaced at the same time to ensure good meshing.

I need to use two overlapped sprockets, I want the tooth top direction to be consistent, is it possible?

Due to process reasons, it is impossible to guarantee the overlapping of the tooth tops of several sprockets. If the tooth tops are required to be overlapped, please contact our company or indicate on the order (the tooth tops need to be overlapped)

The engraving on the sprocket does not match the packaged model, is it shipped wrongly?

The product model is subject to the label on the shipping bag and the actual size. The engraving is only the factory management number of the sprocket product during processing, and is not directly associated with the product model.

Please note that the MISUMI India offices and warehouses will remain closed from Oct 31st to Nov 3rd due to the Diwali festival.
Please note that the MISUMI Pune office and warehouse will be closed on November 20th due to the state election.
Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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Part Number Complete

C-SPA40B15-N-25

type Number of Teeth Shaft Bore Dia. D (or d) Type Shaft Type Bore Specification CAD Days to Ship

Specification/Dimensions

type
- C-SPA40B
Clear
Number of Teeth(T)
9

10

12

13

15
Clear
Shaft Bore Dia. D (or d)(mm)
9

12

15

17

20

25
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 + Screw Bore Type)
- S (Through Hole)
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day

12 Day(s) or Less

46 Day(s) or Less
Clear

Specify Alterations

Sprockets Nominal No.40 (C-SPA40B15-N-25)

Volume Discount

Check FAQ of this product (4 items)

Brand :

MiSUMi Economy

Order Qty :
Total Price :

---
Days to ship :

---

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Actual Product of Sprockets

Product Overview of Sprockets

■ Sprockets is a solid or spoked gear that engages with a roller chain to transfer motion or power.
Application of Sprockets: It is widely used in mechanical transmission in chemical industry, textile machinery, food processing, instrumentation,and petroleum
■ Only Sprockets and chains of the same specifications can be used in combination.
This series is ISO 08A/ANSI 40 sprocket, and can be used in combination with MISUMI 40B series chain.
■ Do not use it with ISO/ANSI 08B series chain, which may cause the chain sprocket mechanism to fail to function properly!
■ Due to process reasons, it is impossible to guarantee the coincidence of the tooth tops of multiple Sprockets. If you need to use the tooth tops in an overlapping manner, please contact us.

Product Feature of Sprockets

■Sprockets chain drive has the following features compared with gear drive and belt drive:
1. Multi-tooth load bearing, safe and reliable;
2. Flexible transmission, absorbing shock and vibration;
3. Large center distance range, low manufacturing and mounting accuracy requirements;
4. Compared with belt drive, the transmission ratio is accurate and the transmission efficiency is higher, suitable for high temperature，dusty and humid environments.

■ Sprockets, chain selection
Misumi’s sprocket and Sprockets product selection supports the principle of “Nominal Numbering”

Product Feature

Dimensional Drawing of Sprockets

Product Drawings of Sprockets (Unit: mm)
Dimensional Drawing

Fixing Screw of Symbol ＊ is M6.

If 10K is selected, the shaft hole diameter is φ10 and the keyway width is 4mm (height 1.8mm).

Symbol indicates that there is a notch on the outer diameter of the hub.
■ A single of Sprockets package label may not match the ordered model. It is a factory-managed model. Please note that the outer package label shall prevail!

■ Shaft Hole Machining Size Table

Sprockets Type	Sprockets Material	Surface Treatment	Accessories
C-SPA40B	Equivalent to S45C (Induction Hardened Teeth Tip)	-	Fixing Screw (Only Shaft Hole Specifications N)

Usage Method of Sprockets

How to mount the roller Sprockets (A) Axis configuration ■Sprockets Horizontal Even when the two axes are arranged horizontally, the rotation direction of the axis must be considered. The examples (2) and (3) in the figure show that when the chain is stretched, the disengagement between the Sprockets teeth and the chain is not smooth and may bite. In particular, the upper and lower chains in (3) will contact each other, so an idler is required.
■Sprockets Vertical If the chain is stretched, slack as shown in (5) will occur, and when a small Sprockets is used on the lower side, the chain may fall off. Therefore, please use it at an angle of 60 or less as shown in (4). When it is necessary to use it vertically due to the mechanism or space, it is recommended to put the large Sprockets on the lower side, and use the idler on the outside or inside as shown in (6).
(B) Sprockets Deflection Deflection is generally about 4% of the shaft spacing, and about 2% in the following cases. a. Sprockets Vertical transmission or close to vertical transmission b. Shaft spacing is more than 1m c. When frequent heavy load starting and stopping are required d. When reverse rotation is required
(C) When the load changes Sprockets If a tension adjuster is mounted on the tension side or slack side of the Sprockets to provide initial tension in advance, it will eliminate vibration and reduce noise during operation.

Example Use of Sprockets

The Sprockets Used for driving power A mechanism that can convert motor power into roller rotation by combining multiple Sprockets and chains
The Sprockets Used for transporting workpieces A chain conveyor frame with high versatility using flat profiles and chain guides
The Sprockets Used for transporting workpieces A mechanism used to mount accessories on the chain, and extract and transport workpieces

Precautions of Sprockets

■ Sprockets maintenance
1. Sprockets tightness should be suitable. If it is too tight, it will increase power consumption, and bearing is easy to wear; if it is too loose, the sprocket is easy to runout and fall off the chain.
The degree of tightness of the sprocket is: if lifted up or pressed down from the middle of the sprocket, the center distance between the two sprocket is about 2%-3%.

2. The Sprockets shall be installed on shaft without swing and skew.
The end faces of the two Sprockets in the same transmission assembly should be in the same plane. When the center distance of the sprocket is less than 0.5 meters, the deviation can be 1 mm.
When the center distance of the sprocket is more than 0.5 meters, the deviation can be 2 mm. But there shall be no friction on sprocket tooth side. Integral offset.
If the offset is too large, chain is prone to fall off and wear is likely to accelerate. When replacing the sprocket, you must pay attention to check and adjust the offset

3. After the Sprockets is severely worn, the new sprocket and the new chain should be replaced at the same time to ensure good meshing.
You cannot replace new Sprockets separately. Otherwise, it will cause bad engagement and accelerate the wear of new Sprockets.
If the tooth surface of the sprocket is worn to a certain degree, it should be turned over in time (the sprocket used with adjustable surface) to extend the life time.

4. If the new Sprockets is too long or elongated after use, and difficult to adjust, the links can be removed by the case, but the number of the links must be even.
The link should pass through the back of the sprocket with the lock piece being inserted outside, and the opening of the lock piece should be in the opposite direction of the turning.

5. Lubricating oil should be timely filled when Sprockets are working. Lubricating oil must enter the matching clearance between the roller and the inner sleeve to improve working conditions and reduce wear.

6. The old Sprockets cannot be mixed with some of the new sprocket, and should be replaced as a complete set, otherwise it is easy to produce impact in the transmission. Separate replacement of Sprockets will increase wear.

Specification Table of Sprockets

	Part Number (Sprockets Type· No. of Teeth)	－	Specifications	－	Shaft Hole Diameter
Sprockets	C-SPA40B20	－	N	－	20

Part Number				Shaft Hole Specifications	Shaft Hole Diameter (D)												Dp	D₀	H	GD	L	ℓ
Sprockets Type	Sprockets Nominal model	Hub type	Number of Teeth	Shaft Hole Specifications	S Specifications	N Specifications (H7)											Dp	D₀	H	GD	L	ℓ
C－SPA	40	B	9	S N	9		12										37.13	42	28	23	22	5
			10		9		12	15		17							41.1	46	32	27
			11		10		12	15			18	20					45.08	51	36	31
			12		10	10	12	15			18	20	22				49.07	55	40	35
			13		12		12	15	16		18	20	22				53.07	59	37	-		6
			14		12		12	15			18	20	22	25			57.07	63	42
			15		12		12	15		17	18	20	22	25	28		61.08	67	46
			16		13			15				20		25	28		65.1	71	50
			17		13			15			18			25		30	69.12	76	54
			18		13							20		25			73.14	80	57
			19		14							20		25			77.16	84	62
			20		14			15				20		25		30	81.18	88	67		25	7
			22		14									25			89.24	96	75
			24		14							20					97.3	104	63
			25		14									25			101.33	108
			26		14							20					105.36	112
			30		14									25		30	121.5	128

Fixing Screw of Symbol ＊ is M6.

If 10K is selected, the shaft hole diameter is φ10 and the keyway width is 4mm (height 1.8mm).

Shaft Hole Diameter D	Keyway b₂×t₂	Fixing 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

Specification Table

	Part Number (Type· No. of Teeth)	－	Specifications	－	Shaft Hole Diameter
Sprocket	C-SPA40B20	－	N	－	20

Part Number				Shaft Hole Specifications	Shaft Hole Diameter (D)												Dp	D₀	H	GD	L	ℓ
Type	Nominal model	Hub type	Number of Teeth	Shaft Hole Specifications	S Specifications	N Specifications (H7)											Dp	D₀	H	GD	L	ℓ
C－SPA	40	B	9	S N	9		12										37.13	42	28	23	22	5
			10		9		12	15		17							41.1	46	32	27
			11		10		12	15			18	20					45.08	51	36	31
			12		10	10	12	15			18	20	22				49.07	55	40	35
			13		12		12	15	16		18	20	22				53.07	59	37	-		6
			14		12		12	15			18	20	22	25			57.07	63	42
			15		12		12	15		17	18	20	22	25	28		61.08	67	46
			16		13			15				20		25	28		65.1	71	50
			17		13			15			18			25		30	69.12	76	54
			18		13							20		25			73.14	80	57
			19		14							20		25			77.16	84	62
			20		14			15				20		25		30	81.18	88	67		25	7
			22		14									25			89.24	96	75
			24		14							20					97.3	104	63
			25		14									25			101.33	108
			26		14							20					105.36	112
			30		14									25		30	121.5	128

Fixing Screw of Symbol ＊ is M6.

If 10K is selected, the shaft hole diameter is φ10 and the keyway width is 4mm (height 1.8mm).

Symbol indicates that there is a notch on the outer diameter of the hub.
■ A single package label may not match the ordered model. It is a factory-managed model. Please note that the outer package label shall prevail!

■ Shaft Hole Machining Size Table

Shaft Hole Diameter D	Keyway b₂×t₂	Fixing 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

Part Number

Incomplete part number.
Please use left hand selections to complete a part number.

: 30; 45; 60

Part Number
C-SPA40B15-N-25

Part Number	Price	Minimum Order Qty.	Volume Discount	Days to Ship	Number of Teeth (T)	Shaft Bore Dia. D (or d) (mm)	Type	Shaft Type	Bore Specification
	₹ 1,940.32	2 Piece(s)	Available	12 Day(s)	15	25	Shaft Bore Machined Type	Shaft Bore Machining Configurable	N (New JIS Key + Screw Bore Type)

Basic Information

Sprocket Shape	Shape B	Nominal	40	Number of Strands	1
Material	S45C	Chain Type	RS	Surface Treatment	Not Provided

Please check the type/dimensions/specifications of the part C-SPA40B15-N-25 in the Sprockets Nominal No.40 series.

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

Frequently asked question (FAQ)

Question: I bought MISUMI chains, but why can't I use them on my original sprocket?: Answer: Please confirm the specifications of the original sprocket and chain. Specification series number may not match. In addition, there are two specifications: A series and B series in China. The two specifications of sprocket chain are not universal.
Question: Does the sprocket need routine maintenance after installation and use?: Answer: The chain needs regular maintenance after installation and use. These include daily lubricant application, confirmation of chain slack. After the sprocket is severely worn, the new sprocket and the new chain should be replaced at the same time to ensure good meshing.
Question: I need to use two overlapped sprockets, I want the tooth top direction to be consistent, is it possible?: Answer: Due to process reasons, it is impossible to guarantee the overlapping of the tooth tops of several sprockets. If the tooth tops are required to be overlapped, please contact our company or indicate on the order (the tooth tops need to be overlapped)
Question: The engraving on the sprocket does not match the packaged model, is it shipped wrongly?: Answer: The product model is subject to the label on the shipping bag and the actual size. The engraving is only the factory management number of the sprocket product during processing, and is not directly associated with the product model.

Check other FAQ (1 items) Hide

Product variants

Part Number
C-SPA40B10-N-15
C-SPA40B12-N-12
C-SPA40B12-N-15
C-SPA40B13-N-12
C-SPA40B13-N-20
C-SPA40B9-S-9

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	Number of Teeth (T)	Shaft Bore Dia. D (or d) (mm)	Type	Shaft Type	Bore Specification
₹ 1,296.63	2 Piece(s)	Available	12 Day(s)	10	15	Shaft Bore Machined Type	Shaft Bore Machining Configurable	N (New JIS Key + Screw Bore Type)
₹ 1,576.96	1 Piece(s)	Available	12 Day(s)	12	12	Shaft Bore Machined Type	Shaft Bore Machining Configurable	N (New JIS Key + Screw Bore Type)
₹ 1,762.68	2 Piece(s)	Available	12 Day(s)	12	15	Shaft Bore Machined Type	Shaft Bore Machining Configurable	N (New JIS Key + Screw Bore Type)
₹ 1,728.46	2 Piece(s)	Available	12 Day(s)	13	12	Shaft Bore Machined Type	Shaft Bore Machining Configurable	N (New JIS Key + Screw Bore Type)
₹ 1,119.10	2 Piece(s)	Available	12 Day(s)	13	20	Shaft Bore Machined Type	Shaft Bore Machining Configurable	N (New JIS Key + Screw Bore Type)
₹ 678.94	50 Piece(s)		46 Day(s)	9	9	Pilot Bore Type	Standard Pilot Bore	S (Through Hole)

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