Supplementary Disc Springs / Supplementary Sizes

20.008.200.90*1.45

CENTURY_SPRING model reference: CDM-208209 · CENTURY-DISC-SPRINGS-2014 · locator 17

CHRISTIAN_BAUER model reference: 104 450 · CB-DISC-SPRINGS-0611 · locator 158

SCHNORR model reference: 006100 · SCHNORR-HANDBOOK-EN · locator 86

SCHNORR model reference: 051 701 · SCHNORR-HANDBOOK-EN · locator 100

SOLON model reference: SDS 20x8.2x0.9 · SOLON-BELLEVILLE-CATALOG · locator 50

SOLON model reference: SDS 20x8.2x0.9-177 · SOLON-BELLEVILLE-CATALOG · locator 41

Dimensions, standards and downloadable engineering files are generated from published product data.

Made to order

SPECIFICATION

Product data

Open calculator →

Outside diameter De: 20.00 mm
Inside diameter Di: 8.20 mm
Product thickness t: 0.90 mm
Free height l₀: 1.45 mm
Cone height h₀: 0.55 mm
Standard: Supplementary
Material / surface treatment: 51CrV4 Spring SteelZinc phosphate and oil · Cold presetting / scraggingERP: 20.00*8.20*0.90*1.45-T-H0.55-51CRV4-PHOSPHATE_OIL-PSX10CrNi18-8 / AISI 301 Stainless SteelPlain / natural finish · Cold presetting / scraggingERP: 20.00*8.20*0.90*1.45-T-H0.55-1.4310-PLAIN-PS60Si2MnAZinc phosphate and oil · Cold presetting / scraggingERP: 20.00*8.20*0.90*1.45-T-H0.55-60SI2MNA-PHOSPHATE_OIL-PSX7CrNiAl17-7 / AISI 631 / 17-7PHPlain / natural finish · Cold presetting / scraggingERP: 20.00*8.20*0.90*1.45-T-H0.55-1.4568-PLAIN-PS
Temperature: -50 – 300 °C

ENGINEERING FILES

CAD / DXF / STEP

Repository CAD · direct download

20.00*8.20*0.90*1.45 DXF and DWG engineering drawing preview

Open full drawing preview

DWG20.00*8.20*0.90*1.45 DWG CADJH-DS-20.00-8.20-0.90-1.45-P747-EN-R10.dwg · 49 KB

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DXF20.00*8.20*0.90*1.45 DXF CADJH-DS-20.00-8.20-0.90-1.45-P747-EN-R10.dxf · 125 KB

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STEP20.00*8.20*0.90*1.45 STEP CADJH-DS-20.00-8.20-0.90-1.45-P747-R10.step · 21 KB

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STL20.00*8.20*0.90*1.45 STL CADJH-DS-20.00-8.20-0.90-1.45-P747-R10.stl · 1.6 MB

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ENGINEERING OVERVIEW

Candidate decision overview

Data version 3

GEOMETRY CONTRACT

Conical profile

Bearing surfaces: No
Tolerance grade: See dossier / confirm

Special surface parameters must be reviewed against the released drawing; the profile name alone is not a complete geometry definition.

EVIDENCE COVERAGE

✓Manufacturer curve / stress6✓Polysplendid calculations1✓Resolved standards3✓Inspection dossier1—Approved product FEMNot public

A missing FEM record is not evidence of failed validation. It means no approved product-level study is public on this page.

COMBINATION BOUNDARY

Check single disc before stack

Parallel stacks primarily multiply load; series stacks primarily multiply travel. Friction, contact, guidance, preload and manufacturing scatter must be checked separately.

Stack and curves Fatigue / relaxation boundary Calculate this product

CF-07 · PROCESS CARD LIBRARY

Manufacturing process cards

6 material route(s)

Each material and supplied-surface identity has its own database-driven workbook and PNG preview. A review or blocked status is not a production release.

V13143 · R04

1.4310

PLAIN

CONTINUOUS_DIE_FORM+AUSTENITIC_COLD_WORK+NO_SUPPORT_FACE+STRONG_PRESS+PLAIN

Blocked — not for production

Download Excel · 20.2 kB

V13145 · R04

1.4568

PLAIN

CONTINUOUS_DIE_FORM+PH_STAINLESS+NO_SUPPORT_FACE+STRONG_PRESS+PLAIN

Blocked — not for production

Download Excel · 20.6 kB

V1642 · R04

50CrVA

BLACK_OXIDE

CONTINUOUS_DIE_FORM+LOW_ALLOY_QT+NO_SUPPORT_FACE+STRONG_PRESS+BLACK_OXIDE

Blocked — not for production

Download Excel · 20.7 kB

V1644 · R04

51CrV4

PHOSPHATE_OIL

CONTINUOUS_DIE_FORM+LOW_ALLOY_QT+NO_SUPPORT_FACE+STRONG_PRESS+PHOSPHATE_OIL

Blocked — not for production

Download Excel · 20.4 kB

V1643 · R04

60Si2MnA

BLACK_OXIDE

CONTINUOUS_DIE_FORM+LOW_ALLOY_QT+NO_SUPPORT_FACE+STRONG_PRESS+BLACK_OXIDE

Blocked — not for production

Download Excel · 20.7 kB

V19539 · R04

60Si2MnA

PHOSPHATE_OIL

CONTINUOUS_DIE_FORM+LOW_ALLOY_QT+NO_SUPPORT_FACE+STRONG_PRESS+PHOSPHATE_OIL

Blocked — not for production

Download Excel · 20.7 kB

APPROVED SOURCE DATA

Manufacturer engineering data

6 traceable datasets

Loads, stresses, thousand-piece weights and curves retain their manufacturer, source version, page/worksheet, material and temperature condition. A catalog value is an engineering reference unless the inspection dossier separately identifies an approved acceptance tolerance.

Century Spring / MW Industries CDM-208209Manufacturer catalog curve

Source: Century Spring Precision Disc Springs / 2014-01
Location: page 17
Material: AISI C1075 or AISI 6150 carbon/alloy steel
Temperature: Not stated - not assumed
Curve scope: four_point_curve / loading
1000-piece weight: —

Published source points only; no interpolation.

Point	s/h0	s (mm)	F (N)	σ1 / σII (MPa)	σ2 / σIII (MPa)	σ3 (MPa)	σOM (MPa)
25% h	0.250	0.1397	396	400	—	—	—
50% h	0.500	0.2769	730	758	—	—	—
75% h	0.750	0.4166	1,010	1,213	—	—	—
100% h	1.000	0.5563	1,272	1,786	—	—	—

Christian Bauer GmbH + Co. KG 104 450Manufacturer workbook calculation

Source: Christian Bauer cb_cV4 Product List / local reference edition
Location: Liste row 69
Material: Not stated in this source table
Temperature: Not stated - not assumed
Curve scope: single_point / loading
1000-piece weight: —

Point	s/h0	s (mm)	F (N)	σ1 / σII (MPa)	σ2 / σIII (MPa)	σ3 (MPa)	σOM (MPa)
75% h0	0.750	0.4125	949	—	—	—	—

SCHNORR GmbH 006100Manufacturer catalog summary

Source: Schnorr Disc Springs Handbook / source copy in project archive
Location: page 86
Material: Not stated in this source table
Temperature: Not stated - not assumed
Curve scope: summary_only / loading
1000-piece weight: 1.776 kg

This source table publishes a summary (weight and/or σOM) but no displacement-load points; no curve has been invented.

SCHNORR GmbH 051 701Manufacturer catalog summary

Source: Schnorr Disc Springs Handbook / source copy in project archive
Location: page 100
Material: 1.4310
Temperature: Not stated - not assumed
Curve scope: summary_only / loading
1000-piece weight: 1.838 kg

This source table publishes a summary (weight and/or σOM) but no displacement-load points; no curve has been invented.

Solon Manufacturing Co. SDS 20x8.2x0.9Manufacturer catalog point

Source: Solon Belleville Springs Washer Catalog / local reference edition
Location: page 50
Material: 50CrV4 (AISI 6150 equivalent)
Temperature: Not stated - not assumed
Curve scope: single_point / loading
1000-piece weight: —

Point	s/h0	s (mm)	F (N)	σ1 / σII (MPa)	σ2 / σIII (MPa)	σ3 (MPa)	σOM (MPa)
catalog listed operating point	1.016	0.5590	1,201	—	—	—	—

Solon Manufacturing Co. SDS 20x8.2x0.9-177Manufacturer catalog point

Source: Solon Belleville Springs Washer Catalog / local reference edition
Location: page 41
Material: 1.4568
Temperature: Not stated - not assumed
Curve scope: single_point / loading
1000-piece weight: —

Point	s/h0	s (mm)	F (N)	σ1 / σII (MPa)	σ2 / σIII (MPa)	σ3 (MPa)	σOM (MPa)
catalog listed operating point	1.155	0.6350	1,490	—	—	—	—

STANDARD DOSSIER

Resolved standard requirements

56 resolved items

DIN EN 16983:2017-09Disc springs — Quality specifications — Dimensions

Series — · Group 1 · without bearing surfaces

Incomplete fields: 补充规格不属于 A/B/C 尺寸表；通用公差、导向与工艺规则仍按尺寸/组别解析

ProductDisc spring group 1

Table 2 · EN 16983 pages 6～7（PDF 8～9）

ProductStandard spring steel requirement

EN 10083 / EN 10089 / EN 10132-4 MPa

5 · EN 16983 page 7（PDF 9）

ProcessGroup 1 manufacturing and surface finish

冲压、冷成形、边缘倒圆

Table 7 · EN 16983 page 11（PDF 13）

ProductThickness tolerance

deviation -0.09 / +0.03 mm；product limits 0.81–0.93 mm

Table 8 · EN 16983 page 13（PDF 15）

ProductOutside diameter h12 tolerance

deviation -0.21 / 0 mm；product limits 19.79–20 mm；h12

8.1 / ISO 286-2 · EN 16983 page 12（PDF 14）

ProductInside diameter H12 tolerance

deviation 0 / +0.15 mm；product limits 8.2–8.35 mm；H12

8.1 / ISO 286-2 · EN 16983 page 12（PDF 14）

ProductFree-height tolerance

deviation -0.05 / +0.1 mm；product limits 1.4–1.55 mm

Table 9 · EN 16983 page 13（PDF 15）

ProductTest-load tolerance

deviation -7.5 / +25 %；test position 0.75 h0

Table 10 · EN 16983 pages 13～14（PDF 15～16）

ProductCoaxiality tolerance

0.26 mm；2 × IT11

8.1 / ISO 286-2 · EN 16983 page 12（PDF 14）

ProductGroup 1 hardness

425–510 HV10

7.2 · EN 16983 page 11（PDF 13）

ProductRecommended total clearance for guide pin

0.2 mm；recommended guide pin diameter 8 mm

Table 12 · EN 16983 page 15（PDF 17）

ProductRecommended total clearance for guide sleeve

0.3 mm；recommended guide sleeve bore 20.3 mm

Table 12 · EN 16983 page 15（PDF 17）

ProductGuide component surface requirement

See requirement data

12 · EN 16983 section 12, page 21（PDF 23）

ProcessPresetting

2 × test load；压至平位后复核自由高度与检测负荷

7.4 / 8.4.2 · EN 16983 pages 12, 14（PDF 14, 16）

ProcessSurface quality and edges

无影响性能的斑疤、裂纹、锈蚀；边缘倒圆或去毛刺

7.5 · EN 16983 page 12（PDF 14）

ProcessSurface treatment and corrosion protection

phosphated and oiled

7.5 · EN 16983 page 12（PDF 14）

ProcessShot peening

recommended for dynamic duty where fatigue-life improvement is required；process agreement required

10.2.2 · EN 16983 page 20（PDF 22）

InspectionDecarburization depth

product maximum depth 0.027 mm

7.2 · EN 16983 page 11（PDF 13）

ProductStatic calculated stress limit

See requirement data

10.1 · EN 16983 page 17（PDF 19）

ProductMinimum preload for dynamic duty

0.15–0.2 h0；product limits 0.0825–0.11 mm

10.2.1 · EN 16983 page 18（PDF 20）

ProductRelaxation and operating-temperature note

Consult the manufacturer above 100 °C for material, stress and relaxation requirements

9 / Figures 3–4 · EN 16983 page 17（PDF 19）

InspectionTest-load method

test position 0.75 h0；硬化、磨削并抛光的压盘；使用适合润滑剂

8.4.1 · EN 16983 page 13（PDF 15）

InspectionDimensional inspection method

按标准约定的量具、压盘及测量条件执行

8 · EN 16983 pages 13～14（PDF 15～16）

InspectionHardness test method and location

See requirement data

11.3 · EN 16983 page 21（PDF 23）

BatchBatch sampling and acceptance

Acceptance inspection according to EN ISO 3269 where applicable

2 · EN 16983 pages 11～18（PDF 13～20）

PackagingMarking, packaging and storage

Contract and product documentation requirements apply

contract · EN 16983 pages 11～18（PDF 13～20）

GB/T 1972.2-2023Disc springs — Part 2: Technical specifications

Series — · Group 1 · without bearing surfaces

Incomplete fields: 补充规格不属于 A/B/C 尺寸表；通用公差、导向与工艺规则仍按尺寸/组别解析; 缺少国标公差等级 I/II，分级公差规则无法解析

ProductDisc spring group 1

表 2 · GB/T 1972.2 标准页4～5（PDF 11～12）

ProductStandard product designation

碟簧 ? 20-? GB/T 1972.2

B.2 · GB/T 1972.2 附录 B B.2（标准页27/PDF 34）

ProductStandard spring steel requirement

50CrVA / 51CrMnV / 60Si2MnA；材料质量证明及复验

6.1 · GB/T 1972.2 标准页5（PDF 12）

ProductThickness tolerance

deviation -0.09 / +0.06 mm；product limits 0.81–0.96 mm

表5 · GB/T 1972.2 标准页6（PDF 13）

ProductFree-height tolerance

deviation -0.05 / +0.1 mm；product limits 1.4–1.55 mm

表7 · GB/T 1972.2 标准页8（PDF 15）

ProductGroup 1 hardness

425–510 HV10

6.5.1 · GB/T 1972.2 标准页10（PDF 17）

ProductRecommended total clearance for guide pin

0.2 mm；recommended guide pin diameter 8 mm

表 C.1 · GB/T 1972.2 附录 C 表 C.1（标准页30/PDF 37）

ProductRecommended total clearance for guide sleeve

0.3 mm；recommended guide sleeve bore 20.3 mm

表 C.1 · GB/T 1972.2 附录 C 表 C.1（标准页30/PDF 37）

ProductGuide component surface requirement

See requirement data

C.2 · GB/T 1972.2 附录 C C.2（标准页30/PDF 37）

ProcessPresetting

2 × test load；压至平位后复核自由高度与检测负荷

6.6 / 7.3 · GB/T 1972.2 标准页10、15（PDF 17、22）

ProcessSurface quality and edges

无影响性能的斑疤、裂纹、锈蚀；边缘倒圆或去毛刺

6.4 · GB/T 1972.2 标准页9（PDF 16）

ProcessSurface treatment and corrosion protection

磷化或供需双方约定

6.7 · GB/T 1972.2 标准页10（PDF 17）

ProcessShot peening

按需及供需协议；GB/T 31214.1

6.8 · GB/T 1972.2 标准页10（PDF 17）

InspectionDecarburization depth

product maximum depth 0.027 mm

6.5.2 · GB/T 1972.2 标准页10（PDF 17）

ProductStatic calculated stress limit

See requirement data

6.9.1 · GB/T 1972.2 标准页10（PDF 17）

ProductMinimum preload for dynamic duty

0.15–0.2 h0；product limits 0.0825–0.11 mm

6.9.2 · GB/T 1972.2 标准页10～11（PDF 17～18）

ProductRelaxation and operating-temperature note

Consult the manufacturer above 100 °C for material, stress and relaxation requirements

6.10 / 图6 · GB/T 1972.2 标准页14（PDF 21）

InspectionTest-load method

test position 0.75 h0；硬化、磨削并抛光的压盘；使用适合润滑剂

7.6 · GB/T 1972.2 标准页19（PDF 26）

InspectionDimensional inspection method

厚度测量三个或更多点取平均；外径取多点最大值、内径取多点最小值；自由高度多次测量取平均

7.4 · GB/T 1972.2 标准页15～18（PDF 22～25）

InspectionHardness test method and location

See requirement data

7.7 · GB/T 1972.2 标准页20（PDF 27）

InspectionInspection equipment capability

See requirement data

7.2 · GB/T 1972.2 标准页15（PDF 22）

BatchBatch sampling and acceptance

特殊检查水平 S-4；缺陷按 A/B/C 分类并按批量选择抽样方案

8.1～8.5，表9～13 · GB/T 1972.2 标准页20～23（PDF 27～30）

PackagingMarking, packaging and storage

清洁、防潮、防损；附产品合格证；通风干燥贮存

9 · GB/T 1972.2 标准页23～24（PDF 30～31）

PS/DS-G01-2026Polysplendid disc-spring engineering recommendations (non-mandatory)

Series — · Group 1 · without bearing surfaces

Incomplete fields: 补充规格不属于 A/B/C 尺寸表；通用公差、导向与工艺规则仍按尺寸/组别解析

ProductRecommended edge-radius range (enterprise drawing rule)

t产品 / 6 ≤ R ≤ t产品 / 5；product limits 0.15–0.18 mm；product recommendation 0.15 mm；Use actual product thickness: t for plain T products and t-prime for reduced TP products. CAD defaults to the lower bound while drawings expose the full recommended range.

Disc Spring Contact Surfaces · Machinery's Handbook 31st, p.390（厂商经验转述）

ProductPolysplendid default working-deflection range

0.2–0.75 h0；product limits 0.11–0.4125 mm

聚辉推荐 DS-G01 · Mubea 2023 manual PDF 27；SPIROL deflection-range white paper

ProductNormal parallel-stack count recommendation

1–4

3.10 Spring stack design · Mubea Disc Springs Manual 2023, PDF 24

ProductSeries-stack limit for standard fatigue-chart evidence

See requirement data

10.2.2 · DIN EN 16983 page 18（PDF 20）

ProcessGuidance and stack lubrication

按温度、介质和寿命选择油、脂、含二硫化钼膏或固体润滑；不得把未润滑摩擦忽略

guidance / lubrication / friction · Mubea 2023 manual PDF 25, 28～31；Christian Bauer theory PDF 17

ProductGuidance preference

优先内导柱；空间或结构要求时使用外导套；低迟滞需求评估自定心结构

C.1 / 3.10 · GB/T 1972.2 附录 C；Mubea 2023 manual PDF 24～25

ProductGeometry triggers for enhanced analysis

De/Di=2.439024，De/t=22.222222，within simplified-geometry range

3.9 Special cases · Mubea Disc Springs Manual 2023, PDF 21

INSPECTION DOSSIER

Product inspection requirements

7 acceptance limits

Data boundary: 补充规格不属于 A/B/C 尺寸表；尺寸公差、同轴度、硬度和导向间隙按 DIN EN 16983 通用范围规则解析; 平面度没有标准通用数值，等待图纸/工艺卡/供需协议覆盖; 平行度没有标准通用数值，等待图纸/工艺卡/供需协议覆盖

Characteristic	Requirement / limits	Status	Source
Outside diameterD / De	20 mm (-0.21/+0 mm); limits 19.79–20 mmThis supplementary geometry is outside the A/B/C dimension tables; dimensional tolerances, coaxiality, hardness and guide clearances use the applicable DIN EN 16983 general range rules.	Resolved	DIN EN 16983:2017-09EN 16983 page 12（PDF 14）
Inside diameterd / Di	8.2 mm (+0/+0.15 mm); limits 8.2–8.35 mmThis supplementary geometry is outside the A/B/C dimension tables; dimensional tolerances, coaxiality, hardness and guide clearances use the applicable DIN EN 16983 general range rules.	Resolved	DIN EN 16983:2017-09EN 16983 page 12（PDF 14）
Product thicknesst / t′	0.9 mm (-0.09/+0.03 mm); limits 0.81–0.93 mmThis supplementary geometry is outside the A/B/C dimension tables; dimensional tolerances, coaxiality, hardness and guide clearances use the applicable DIN EN 16983 general range rules.	Resolved	DIN EN 16983:2017-09EN 16983 page 13（PDF 15）
Free heightH0 / l₀	1.45 mm (-0.05/+0.1 mm); limits 1.4–1.55 mmThis supplementary geometry is outside the A/B/C dimension tables; dimensional tolerances, coaxiality, hardness and guide clearances use the applicable DIN EN 16983 general range rules.	Resolved	DIN EN 16983:2017-09EN 16983 page 13（PDF 15）
Cone heighth0 / h₀	0.55 mm (-0.08/+0.19 mm); limits 0.47–0.74 mmWorst-case envelope derived from free-height and plain product thickness t tolerances; it is a reference, not an independent standard h0 acceptance tolerance.	Derived reference	DIN-EN-16983-2017-09EN 16983 page 13（PDF 15）; EN 16983 page 13（PDF 15）
Coaxiality—	≤ 0.26 mmThis supplementary geometry is outside the A/B/C dimension tables; dimensional tolerances, coaxiality, hardness and guide clearances use the applicable DIN EN 16983 general range rules.	Resolved	DIN EN 16983:2017-09EN 16983 page 12（PDF 14）
Flatness—	Set by approved drawing, process card or supply agreementThe standard does not provide a universal independent numeric tolerance; an approved drawing, process card or supply agreement must provide the acceptance value.	Agreement required	POLYSPLENDID-INSPECTION-POLICY-2026-08Task 121 标准原文核对结论
Parallelism—	Set by approved drawing, process card or supply agreementThe standard does not provide a universal independent numeric tolerance; an approved drawing, process card or supply agreement must provide the acceptance value.	Agreement required	POLYSPLENDID-INSPECTION-POLICY-2026-08Task 121 标准原文核对结论
Test loadFt	1030.715692 N (-7.5/+25%); limits 953.412015–1288.394615 NThe nominal test load comes from the current published standard, manufacturer, or engineering dataset; limits use the applicable DIN EN 16983 percentage tolerance.	Resolved	DIN EN 16983:2017-09rounded_almen_laszlo_calculation
Hardness—	425–510 HV10This supplementary geometry is outside the A/B/C dimension tables; dimensional tolerances, coaxiality, hardness and guide clearances use the applicable DIN EN 16983 general range rules.	Resolved	DIN EN 16983:2017-09EN 16983 page 11（PDF 13）

Where cone-height limits are shown, they are derived references only. Flatness and parallelism become acceptance criteria only after an approved drawing, process card or supply agreement supplies numeric values.

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