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Disc Springs

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Volume Discount

Disc Springs
Disc Springs also known as belleville spring 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 : SUP10 Equivalent and SUS304-CSP Equivalent
● Surface treatment : Phosphate Coating for SUP10 Equivalent
[Application]
Disc springs are utilized in bolted joints to maintain the desired preload force.

(i)Caution

[Specification Change] The materials, surface treatment, and appearances will be changed sequentially starting in July 2025. Please see here for details. Products before and after the change may be mixed in the same shipment, but there are no problems with use.
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
More Information
Catalog
Technical Information

SRBN
SSRBN
(Stainless Steel)

t	Load Tolerance (75% Deflection)
0.3~1.1	+25% -7.5%
1.2~3	+15% -7.5%

Type	[ M ]Material	[ S ]Surface Treatment	[ H ]Hardness
SRBN8~45	SUP10 Equivalent	Phosphate Coating D45 and 50 are not treated.	42~48HRC
SRBN50	SUP10 Equivalent	Phosphate Coating D45 and 50 are not treated.	42~48HRC
SSRBN	SUS304-CSP Equivalent	-	37~46HRC

Specifications

Part Number	-	Load Type A, B
SRBN22.5	-	A

Part Number		Load Type	D	d		t	H		h	Load N 75% Deflection		SRBN				SSRBN
Part Number										SRBN	SSRBN	Unit Price	Volume Discount Rate			Unit Price	Volume Discount Rate
Type	D									SRBN	SSRBN	1~49	50~74	75~99	100~500	1~49	50~74	75~99	100~500
SRBN SSRBN (Stainless Steel)	8	A	0 -0.15	4.2	+0.15 0	0.3	0.55	±0.10	0.25	133	102
	8	B		4.2		0.4	0.60		0.20	234	179
	10	A		5.2		0.4	0.70		0.30	232	179
	10	B		5.2		0.5	0.75		0.25	360	282
	12.5	A	0 -0.20	6.2		0.5	0.85		0.35	333	256
	12.5	B		6.2		0.7	1.00		0.30	769	572
	14	A		7.2		0.5	0.90		0.40	316	239
	14	B		7.2		0.8	1.10		0.30	921	691
	16	A		8.2		0.6	1.05		0.45	459	358
	16	B		8.2		0.9	1.25		0.35	1,315	896
	18	A		9.2		0.7	1.20		0.50	630	495
	18	B		9.2		1.0	1.40	±0.15	0.40	1,380	1,109
	20	A	0 -0.25	10.2	+0.20 0	0.8	1.35	±0.10	0.55	812	648
	20	B		10.2		1.1	1.55	±0.15	0.45	1,600	1,322
	22.5	A		11.2		0.8	1.45	±0.10	0.65	766	614
	22.5	B		11.2		1.2(1.25)	1.7(1.75)	±0.15	0.50	1,870	1,681
	25	A		12.2		0.9	1.6	±0.10	0.70	929	751
	25	B		12.2		1.6(1.5)	2.15(2.05)	±0.15	0.55	3,770	2,542
	28	A		14.2		1	1.8		0.80	1,180	981
	28	B		14.2		1.6(1.5)	2.25(2.15)		0.65	3,680	2,474
	31.5	A	0 -0.30	16.3		1.2(1.25)	2.1(2.15)		0.90	1,810	1,664
	31.5	B		16.3		1.8(1.75)	2.5(2.45)		0.70	4,490	3,370
	35.5	A		18.3	+0.25 0	1.2(1.25)	2.2(2.25)		1.00	1,590	1,476
	35.5	B		18.3		2	2.8		0.80	5,460	4,522
	40	A		20.4		1.6(1.5)	2.75(2.65)		1.15	3,290	2,278
	40	B		20.4		2(2.25)	3.1(3.15)		0.90	6,410	5,657
	45	A		22.4		1.8(1.75)	3.1(3.05)		1.30	4,130	3,174
	45	B		22.4		2.5	3.5	±0.2	1.00	8,040	6,697
	50	A		25.4		2	3.4	±0.15	1.40	5,110	4,146
	50	B		25.4		3	4.1	±0.2	1.10	13,400	10,409

[ ! ]t and H dimensions for SSRBN are shown in ( ). (Different from JIS)
[ ! ]Load is reference value. kgf=Nx0.101972

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
SRBN8-B
SRBN10-B
SRBN12.5-B
SRBN14-B
SRBN16-B
SRBN18-B
SRBN20-B
SRBN22.5-B
SRBN25-B
SRBN28-B
SRBN31.5-B
SRBN35.5-B
SRBN40-B
SRBN45-B
SRBN50-B
SSRBN8-B
SSRBN10-B
SSRBN12.5-B
SSRBN14-B
SSRBN16-B
SSRBN18-B
SSRBN20-B
SSRBN22.5-B
SSRBN25-B
SSRBN28-B
SSRBN31.5-B
SSRBN35.5-B
SSRBN40-B
SSRBN45-B
SSRBN50-B

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Outer Dia. D (Ø)	Inner Dia. d (Ø)	Load Shape	Load (N)	Material	Plate Thickness t (mm)	Free Height (H0) (mm)	Maximum Deformation (h) (mm)	Surface Treatment
MYR 1.49	1 Piece(s)	Available	2 Day(s)	10	8	4.2	B	234	SUP10 Equivalent	0.4	0.6	0.2	Phosphate Coating
MYR 1.56	1 Piece(s)	Available	2 Day(s)	10	10	5.2	B	360	SUP10 Equivalent	0.5	0.75	0.25	Phosphate Coating
MYR 1.61	1 Piece(s)	Available	2 Day(s)	10	12.5	6.2	B	769	SUP10 Equivalent	0.7	1	0.3	Phosphate Coating
MYR 1.63	1 Piece(s)	Available	4 Day(s) or more	10	14	7.2	B	921	SUP10 Equivalent	0.8	1.1	0.3	Phosphate Coating
MYR 1.67	1 Piece(s)	Available	1 Day(s)	10	16	8.2	B	1,315	SUP10 Equivalent	0.9	1.25	0.35	Phosphate Coating
MYR 1.69	1 Piece(s)	Available	4 Day(s) or more	10	18	9.2	B	1,380	SUP10 Equivalent	1	1.4	0.4	Phosphate Coating
MYR 1.73	1 Piece(s)	Available	1 Day(s)	10	20	10.2	B	1,600	SUP10 Equivalent	1.1	1.55	0.45	Phosphate Coating
MYR 1.74	1 Piece(s)	Available	4 Day(s) or more	10	22.5	11.2	B	1,870	SUP10 Equivalent	1.2	1.7	0.5	Phosphate Coating
MYR 3.22	1 Piece(s)	Available	4 Day(s) or more	10	25	12.2	B	3,770	SUP10 Equivalent	1.6	2.15	0.55	Phosphate Coating
MYR 1.87	1 Piece(s)	Available	4 Day(s) or more	10	28	14.2	B	3,680	SUP10 Equivalent	1.6	2.25	0.65	Phosphate Coating
MYR 1.97	1 Piece(s)	Available	4 Day(s) or more	10	31.5	16.3	B	4,490	SUP10 Equivalent	1.8	2.5	0.7	Phosphate Coating
MYR 4.15	1 Piece(s)	Available	2 Day(s)	10	35.5	18.3	B	5,460	SUP10 Equivalent	2	2.8	0.8	Phosphate Coating
MYR 6.06	1 Piece(s)	Available	4 Day(s) or more	10	40	20.4	B	6,410	SUP10 Equivalent	2$2.0	3.1	0.9	Phosphate Coating
MYR 8.85	1 Piece(s)	Available	4 Day(s) or more	10	45	22.4	B	8,040	SUP10 Equivalent	2.5	3.5	1	NA
MYR 6.77	1 Piece(s)	Available	4 Day(s) or more	10	50	25.4	B	13,400	SUP10 Equivalent	3	4.1	1.1	NA
MYR 1.59	1 Piece(s)	Available	2 Day(s)	10	8	4.2	B	179	SUS304-CSP Equivalent	0.4	0.6	0.2	NA
MYR 1.61	1 Piece(s)	Available	1 Day(s)	10	10	5.2	B	282	SUS304-CSP Equivalent	0.5	0.75	0.25	NA
MYR 1.63	1 Piece(s)	Available	2 Day(s)	10	12.5	6.2	B	572	SUS304-CSP Equivalent	0.7	1	0.3	NA
MYR 1.71	1 Piece(s)	Available	2 Day(s)	10	14	7.2	B	691	SUS304-CSP Equivalent	0.8	1.1	0.3	NA
MYR 1.73	1 Piece(s)	Available	2 Day(s)	10	16	8.2	B	896	SUS304-CSP Equivalent	0.9	1.25	0.35	NA
MYR 1.79	1 Piece(s)	Available	6 Day(s)	10	18	9.2	B	1,109	SUS304-CSP Equivalent	1	1.4	0.4	NA
MYR 1.84	1 Piece(s)	Available	6 Day(s)	10	20	10.2	B	1,322	SUS304-CSP Equivalent	1.1	1.55	0.45	NA
MYR 1.95	1 Piece(s)	Available	2 Day(s)	10	22.5	11.2	B	1,681	SUS304-CSP Equivalent	1.25	1.75	0.5	NA
MYR 2.03	1 Piece(s)	Available	6 Day(s)	10	25	12.2	B	2,542	SUS304-CSP Equivalent	1.5	2.05	0.55	NA
MYR 1.94	1 Piece(s)	Available	4 Day(s) or more	10	28	14.2	B	2,474	SUS304-CSP Equivalent	1.5	2.15	0.65	NA
MYR 2.27	1 Piece(s)	Available	4 Day(s) or more	10	31.5	16.3	B	3,370	SUS304-CSP Equivalent	1.75	2.45	0.7	NA
MYR 5.27	1 Piece(s)	Available	4 Day(s) or more	10	35.5	18.3	B	4,522	SUS304-CSP Equivalent	2	2.8	0.8	NA
MYR 16.09	1 Piece(s)	Available	4 Day(s) or more	10	40	20.4	B	5,657	SUS304-CSP Equivalent	2.25	3.15	0.9	NA
MYR 17.06	1 Piece(s)	Available	4 Day(s) or more	10	45	22.4	B	6,697	SUS304-CSP Equivalent	2.5	3.5	1	NA
MYR 27.19	1 Piece(s)	Available	2 Day(s)	10	50	25.4	B	10,409	SUS304-CSP Equivalent	3	4.1	1.1	NA

More Information

■Load Characteristics in Combination (Excerpt from JIS B 2706 (2003))

[ ! ]A guide is necessary to keep the springs aligned.
[ ! ]Please use the disc springs of same size and load only.

Product TOP

Configure

30 Part Numbers

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Configure Remaining Specifications

Completed

Specification/Dimensions

Outer Dia. D(Ø)
8

10

12.5

14

16

18

20

22.5

25

28

31.5

35.5

40

45

50
Clear
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
Clear
Load(N)
1,109

1,180

1,315

1,322

1,380

1,476

1,590

1,600

1,664

1,681

1,810

1,870

2,278

2,474

2,542

3,174

3,290

3,370

3,680

3,770

4,130

4,146

4,490

4,522

5,110

5,460

5,657

6,410

6,697

8,040

10,409

13,400

102

133

179

232

234

239

256

282

316

333

358

360

459

495

572

614

630

648

691

751

766

769

812

896

921

929

981
Clear
Material
- SUP10 Equivalent
- SUS304-CSP Equivalent
Clear
Plate Thickness t(mm)
0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

1.25

1.5

1.6

1.75

1.8

2

2$2.0

2.25

2.5

3
Clear
Free Height (H0)(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

1.7

1.75

1.8

2.05

2.1

2.15

2.2

2.25

2.45

2.5

2.65

2.75

2.8

3.05

3.1

3.15

3.4

3.5

4.1
Clear
Maximum Deformation (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
Clear
Surface Treatment
- NA
- Phosphate Coating
Clear
type
- SRBN
- SSRBN
Clear
Load Shape
- B
- A
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

1 Day(s) or Less

2 Day(s) or Less

4 Day(s) or Less

6 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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Disc Springs

(i)Caution

Specifications

Part Number

More Information

Configure

Specification/Dimensions

Outer Dia. D(Ø)

Inner Dia. d(Ø)

Load(N)

Material

Plate Thickness t(mm)

Free Height (H0)(mm)

Maximum Deformation (h)(mm)

Surface Treatment

type

Load Shape

CAD

Days to Ship

Specify Alterations

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