What is the difference between a butterfly spring and a coil spring?

1. The butterfly spring can be installed in small spaces with large load, and its characteristics can be varied in a wide range through combination of use. 2. When bearing load, it can get larger stroke. It has the load characteristics of low hysteresis and high reproducibility during compression and decompression.

What types of disc spring materials are available in the market?

The standard material is 60Si2Mn, while the best material should be 50CrV4, equivalent to the imported steel 51CrV4. The rest are unconventional materials such as stainless steel.

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Part Number CompleteĐã hoàn thành

E-SRBN20A

type Outer Dia. D Inner Dia. d Load Type Plate Thickness t Free State Height H Total Deflection h CAD Days to Ship

Specification/DimensionsĐặc điểm kỹ thuật / Kích thướcĐặc điểm kỹ thuật / Kích thước

type
- E-SRBN
ClearTrống
Outer Dia. D(Ø)
8

10

12.5

14

16

18

20

22.5

25

28

31.5

35.5

40

45

50
ClearTrống
Inner Dia. d(Ø)
4.2

5.2

6.2

7.2

8.2

9.2

10.2

11.2

12.2

14.2

16.3

18.3

20.4

22.4

25.4
ClearTrống
Load Type
- B
- A
ClearTrống
Plate Thickness t(mm)
0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

1.1

1.25

1.5

1.75

2

2.25

2.5

3
ClearTrống
Free State Height H(mm)
0.55

0.6

0.7

0.75

0.85

0.9

1

1.05

1.1

1.2

1.25

1.35

1.4

1.45

1.55

1.6

1.75

1.8

2.05

2.15

2.25

2.45

2.65

2.8

3.05

3.15

3.4

3.5

4.1
ClearTrống
Total Deflection h(mm)
0.2

0.25

0.3

0.35

0.4

0.45

0.5

0.55

0.65

0.7

0.8

0.9

1

1.1

1.15

1.3

1.4
ClearTrống
CADCAD
- 2D
- 3D
ClearTrống

Days to ShipSố ngày giao hàng

Alltất cả các

Same day

10 Day(s) or Less
ClearTrống

Specify AlterationsChỉ định thay đổi

Disc Springs【50-100 Pieces Per Package】 (E-SRBN20A)

Volume Discount

Check FAQ of this product (2 items)

Brand :

MiSUMi Economy

Order Qty :
Total Price :

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Days to ship :

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thận trọng

**RoHS Compliant is available for some part numbers.
Please contact with MISUMI for detail effective date.

Product Description

Disc Springs
Disc Springs also known as belleville spring are an economy item, The price is cheaper than the MISUMI standard product.They offer a wide variety of sizes to choose from.
[Feature]
● Outer Diameter Minimum/Maximum (mm.) : 8 and 50
● Inner Diameter Minimum/Maximum (mm.) : 4.2 and 25.4
● Free State Height Minimum/Maximum (mm.) : 0.55 and 4.1 (depend on product code)
● Material : 50CrVA
● Surface treatment : Phosphating
[Application]
Disc springs are utilized in bolted joints to maintain the desired preload force.

Economy Disc Spring

Compact DesignHigh Load CapacityConsistent Quality

- Design: Cone-shaped disc design for efficient load distribution.

- Material: 50CrVA steel for strength and durability.

- Size Range: Varied outer and inner diameters to suit different applications.

- Fastener with bulk packaging options

- High Load Capacity: Handles large loads with minimal deformation.

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

Disc Springs Product Overview

Overview
The Disc Springs is a cone -shaped disc-like spring that is made by drilling the center of a disc. Unlike conventional springs, it has special functions.
Capable of withstanding large loads with small deformation, it features short stroke, less space, easy combination, maintenance and replacement, enhanced level of economy and safety, and long service life.
Meanwhile, it is also considered as a spring that is difficult to design. When used in a stacked manner, a slight dimensional difference may impose great impact on the load, and cause a reversed relationship between displacement and load.

Disc Springs Product Features

Features of Disc Springs
1. Large stiffness, strong shock absorbing and vibration absorption ability, bearing large load with small deformation, and suitable for small axial space requirements
2. This spring has variable stiffness.
3. Using the same disc spring with different combinations can make the spring characteristics change in a large range
It can be used in different combinations, such as parallel overlapping, in-line combination, or parallel and in-line combination.

■ Difference between MISUMI Economy series and generic products in the market

Products circulating on the market *	MISUMI economy series
24H Salt Spray Test Results	48H Salt Spray Test Results
Surface treatment: blackening	Surface treatment: parkerizing

■ Dimensional Consistency Performance Test

Products circulating on the market *	MISUMI economy series
30PC Consistency Test (CPK)	50PC Consistency Test (CPK)
Deviation of Spring Height (H0) CPK=0.48	Deviation of Spring Height (H0) CPK=1.48	The dimensional consistency of the product is 3 times that of the products circulating on the market.
Overlapping use can result in unstable performance	Ensure stable performance during overlapping use

・When used in combination, the truncated cone height and disc thickness of the disc spring has a great impact on its performance. If the dimensional consistency is not high, stress may be unevenly distributed in the cross section. In this case, a good CPK index can effectively improve its fatigue strength and shock absorbing capability of the material per unit volume. The service life is thus improved.
* Generic products in the market are similar products randomly purchased by our company from online or offline markets
* The test data are obtained through testing by our company, which are for reference only.

Disc Springs Dimensional Drawing

・Material Table

Material: 50CrVA

Surface treatment: parkerizing

Disc Springs Usage Method

Disc Springs Example of Use

Disc Springs Precautions

Changes in inner and outer diameters during compression
Precautions for disc springs - Disc spring coefficient

* When the stroke of the Disc Springs is greater than 75%, the load increase will be limited, but it has a great impact on its service life. Therefore, its optimal operating range is between 10~75% of its maximum displacement.
* When Disc Springss are used in combination, a guide rod or guide sleeve is required for the inner diameter or outer diameter, and the spring shape may change with the compression, so it is important to consider the gap between the spring and the guide part.

Inner Diameter/Outside diameter (mm)	Recommended gap (mm)
15 or Less	0.2
20 or Less	0.3
26 or Less	0.4
45 or Less	0.6
75 or Less	0.8
140 or Less	1.0
250 or Less	1.6

(Not guaranteed values and for reference only)

Disc Springs Related Products

Reason for recommendation: The tension spring with standard fixed length is a heavy load type spring capable of bearing large load and having short delivery time.

Reason for recommendation: The O.D. referenced-type stainless steel spring is a high quality choice for you.

Reason for recommendation: The stainless steel torsion spring provides arm angle options of 90°, 180° and 135°, for which alteration can be made.

Part Number

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

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: 30; 45; 60

Part Number
E-SRBN20A

Part Number	Price	Minimum Order Qty.	Number of pc(s). included in pkg.Number of pc(s). included in pkg.	Volume Discount	Days to ShipSố ngày giao hàng	Outer Dia. D (Ø)	Inner Dia. d (Ø)	Load Type	Plate Thickness t (mm)	Free State Height H (mm)	Total Deflection h (mm)
	133,646 VND	1 Pack(s)	100 Pieces Per Package 100 Pieces Per Package	Available	Same day	20	10.2	A	0.8	1.35	0.55

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Specification Table

Part Number	Outer Diameter (D)	Load Type	Tolerance (D) mm	I.D. (d) mm	Tolerance (d) mm	Plate Thickness (t) mm	Free Height Ho mm	Tolerance (Ho) mm	Maximum Deflection (h) mm	Load (75% Deflection) N
Type	D	Load Type	Tolerance (D) mm	I.D. (d) mm	Tolerance (d) mm	Plate Thickness (t) mm	Free Height Ho mm	Tolerance (Ho) mm	Maximum Deflection (h) mm	Load (75% Deflection) N
Economy series	8	A	0 -0.15	4.2	0.15 0	0.3	0.55	+0.1 -0.05	0.25	119
	8	B		4.2		0.4	0.6		0.2	210
	10	A		5.2		0.4	0.7		0.3	213
	10	B		5.2		0.5	0.75		0.25	323
	12.5	A	0 -0.18	6.2		0.5	0.85		0.35	294
	12.5	B		6.2		0.7	1		0.3	657
	14	A		7.2		0.5	0.9		0.4	274
	14	B		7.2		0.8	1.1		0.3	813
	16	A		8.2		0.6	1.05		0.45	411
	16	B		8.2		0.9	1.25		0.35	1029
	18	A		9.2		0.7	1.2		0.5	568
	18	B		9.2		1	1.4		0.4	1274
	20	A	0 -0.21	10.2	0.18 0	0.8	1.35		0.55	745
	20	B		10.2		1.1	1.55		0.45	1520
	22.5	A		11.2		0.8	1.45		0.65	710
	22.5	B		11.2		1.25	1.75	+0.15 -0.08	0.5	1950
	25	A		12.2		0.9	1.6	+0.10 -0.05	0.7	868
	25	B		12.2		1.5	2.05	+0.15 -0.08	0.55	2910
	28	A		14.2		1	1.8	+0.10 -0.05	0.8	1110
	28	B		14.2		1.5	2.15	+0.15 -0.08	0.65	2850
	31.5	A	0 -0.25	16.3		1.25	2.15		0.9	1920
	31.5	B		16.3		1.75	2.45		0.7	3900
	35.5	A		18.3	0.21 0	1.25	2.25		1	1700
	35.5	B		18.3		2	2.8		0.8	5190
	40	A		20.4		1.5	2.65		1.15	2620
	40	B		20.4		2.25	3.15	+0.20 -0.10	0.9	6540
	45	A		22.4		1.75	3.05	+0.15 -0.08	1.3	3660
	45	B		22.4		2.5	3.5	+0.20 -0.10	1	7720
	50	A		25.4		2	3.4	+0.15 -0.08	1.4	4756
	50	B		25.4		3	4.1	+0.20 -0.10	1.1	11964

The load is reference value.

"h" is the dimension of the load (at 75% displacement).

Basic InformationThông tin cơ bản

Material	Spring Steel

Please check the type/dimensions/specifications of the part E-SRBN20A in the Disc Springs series.Vui lòng kiểm tra kiểu/kích thước/thông số kỹ thuật của phần E-SRBN20A trong chuỗi Disc Springs.

The specifications and dimensions of some parts may not be fully covered. For exact details, refer toCác thông số kỹ thuật và kích thước của mã sản phẩm có thể không được bao phủ đầy đủ. Để biết chi tiết chính xác, hãy tham khảo manufacturer catalogsdanh mục nhà sản xuất ..

Frequently asked question (FAQ)FAQ

Question:Question: What is the difference between a butterfly spring and a coil spring?: Answer:Answer: 1. The butterfly spring can be installed in small spaces with large load, and its characteristics can be varied in a wide range through combination of use.
2. When bearing load, it can get larger stroke. It has the load characteristics of low hysteresis and high reproducibility during compression and decompression.
Question:Question: What types of disc spring materials are available in the market?: Answer:Answer: The standard material is 60Si2Mn, while the best material should be 50CrV4, equivalent to the imported steel 51CrV4. The rest are unconventional materials such as stainless steel.

Products like this...

Part Number
E-SRBN12.5B
E-SRBN14A
E-SRBN14B
E-SRBN20B
E-SRBN22.5A
E-SRBN22.5B

Standard Unit Price	Number of pc(s). included in pkg.Number of pc(s). included in pkg.	Minimum order quantity	Volume Discount	Days to ShipSố ngày giao hàng	Outer Dia. D (Ø)	Inner Dia. d (Ø)	Load Type	Plate Thickness t (mm)	Free State Height H (mm)	Total Deflection h (mm)
95,820 VND	100 Pieces Per Package 100 Pieces Per Package	1 Pack(s)	Available	Same day	12.5	6.2	B	0.7	1	0.3
109,061 VND	100 Pieces Per Package 100 Pieces Per Package	1 Pack(s)	Available	Same day	14	7.2	A	0.5	0.9	0.4
124,351 VND	100 Pieces Per Package 100 Pieces Per Package	1 Pack(s)	Available	Same day	14	7.2	B	0.8	1.1	0.3
171,130 VND	100 Pieces Per Package 100 Pieces Per Package	1 Pack(s)	Available	Same day	20	10.2	B	1.1	1.55	0.45
178,280 VND	100 Pieces Per Package 100 Pieces Per Package	1 Pack(s)	Available	Same day	22.5	11.2	A	0.8	1.45	0.65
187,662 VND	100 Pieces Per Package 100 Pieces Per Package	1 Pack(s)	Available	Same day	22.5	11.2	B	1.25	1.75	0.5

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MISUMI Vietnam Company Limited, Legal Representative: Tomohiro Watanabe,
phone: 0222-361-1555, e-mail: cs@misumi.com.vn, Enterprise Code: 0107514576,
Date of Issuance: 22 July 2016, Place of Issuance: Bac Ninh, Business Certificate No. 6573041568-KD dated 27 September 2016 issued by the People's Committee of Bac Ninh

Công ty TNHH MISUMI Việt Nam, Đại diện theo pháp luật: Tomohiro Watanabe,
Điện thoại: 0222-361-1555, e-mail: cs@misumi.com.vn, Mã số doanh nghiệp: 0107514576,
ngày cấp 22/7/2016, nơi cấp: Bắc Ninh, Giấy phép kinh doanh số: 6573041568-KD ngày cấp 27/9/2016 bởi UBND tỉnh Bắc Ninh