Supplementary Disc Springs / Supplementary Sizes

125.0051.004.00*8.50

CENTURY_SPRING model reference: CDM-1255140 · CENTURY-DISC-SPRINGS-2014 · locator 18

CHRISTIAN_BAUER model reference: 104 996 · CB-DISC-SPRINGS-0611 · locator 163

MUBEA model reference: 18 0122 · MUBEA-MANUAL-2023 · printed p.70 (PDF p.72)

SCHNORR model reference: 019600 · SCHNORR-HANDBOOK-EN · locator 94

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

Made to order

SPECIFICATION

Product data

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Outside diameter De: 125.00 mm
Inside diameter Di: 51.00 mm
Product thickness t: 4.00 mm
Free height l₀: 8.50 mm
Cone height h₀: 4.50 mm
Standard: Supplementary
Material / surface treatment: 51CrV4 Spring SteelZinc phosphate and oil · Cold presetting / scraggingERP: 125.00*51.00*4.00*8.50-T-H4.50-51CRV4-PHOSPHATE_OIL-PS60Si2MnAZinc phosphate and oil · Cold presetting / scraggingERP: 125.00*51.00*4.00*8.50-T-H4.50-60SI2MNA-PHOSPHATE_OIL-PS
Temperature: -50 – 300 °C

ENGINEERING FILES

CAD / DXF / STEP

Repository CAD · direct download

125.00*51.00*4.00*8.50 DXF and DWG engineering drawing preview

Open full drawing preview

DWG125.00*51.00*4.00*8.50 DWG CADJH-DS-125.00-51.00-4.00-8.50-P522-EN-R10.dwg · 49 KB

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DXF125.00*51.00*4.00*8.50 DXF CADJH-DS-125.00-51.00-4.00-8.50-P522-EN-R10.dxf · 125 KB

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STEP125.00*51.00*4.00*8.50 STEP CADJH-DS-125.00-51.00-4.00-8.50-P522-R10.step · 21 KB

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STL125.00*51.00*4.00*8.50 STL CADJH-DS-125.00-51.00-4.00-8.50-P522-R10.stl · 1.6 MB

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ENGINEERING OVERVIEW

Candidate decision overview

Data version 2

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 / stress4✓Polysplendid calculations2✓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

4 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.

V625 · 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

V627 · 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

V626 · 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

V19763 · 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

4 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-1255140Manufacturer catalog curve

Source: Century Spring Precision Disc Springs / 2014-01
Location: page 18
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	1.1328	10,694	483	—	—	—
50% h	0.500	2.2657	17,197	903	—	—	—
75% h	0.750	3.3960	20,911	1,241	—	—	—
100% h	1.000	4.5288	23,229	1,510	—	—	—

Christian Bauer GmbH + Co. KG 104 996Manufacturer workbook calculation

Source: Christian Bauer cb_cV4 Product List / local reference edition
Location: Liste row 224
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	3.3750	19,830	—	—	—	—

Mubea 18 0122Manufacturer calculation workbook

Source: Disc Spring Calculation Program 032 / 032
Location: Standard row 190
Material: Not stated in this source table
Temperature: Not stated - not assumed
Curve scope: four_point_curve / loading
1000-piece weight: 321.182 kg

Published source points only; no interpolation.

Point	s/h0	s (mm)	F (N)	σ1 / σII (MPa)	σ2 / σIII (MPa)	σ3 (MPa)	σOM (MPa)
25% h0	0.250	1.1250	10,096	980	86	463	—
50% h0	0.500	2.2500	16,265	1,832	299	856	—
75% h0	0.750	3.3750	19,817	2,556	640	1,178	—
100% h0	1.000	4.5000	22,060	3,153	1,109	1,431	—

SCHNORR GmbH 019600Manufacturer catalog summary

Source: Schnorr Disc Springs Handbook / source copy in project archive
Location: page 94
Material: Not stated in this source table
Temperature: Not stated - not assumed
Curve scope: summary_only / loading
1000-piece weight: 315.600 kg

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

STANDARD DOSSIER

Resolved standard requirements

56 resolved items

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

Series — · Group 2 · 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 2

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 2 manufacturing and surface finish

冲压/精冲、冷成形、内外径加工、边缘倒圆

Table 7 · EN 16983 page 11（PDF 13）

ProductThickness tolerance

deviation -0.15 / +0.05 mm；product limits 3.85–4.05 mm

Table 8 · EN 16983 page 13（PDF 15）

ProductOutside diameter h12 tolerance

deviation -0.4 / 0 mm；product limits 124.6–125 mm；h12

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

ProductInside diameter H12 tolerance

deviation 0 / +0.3 mm；product limits 51–51.3 mm；H12

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

ProductFree-height tolerance

deviation -0.15 / +0.3 mm；product limits 8.35–8.8 mm

Table 9 · EN 16983 page 13（PDF 15）

ProductTest-load tolerance

deviation -5 / +10 %；test position 0.75 h0

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

ProductCoaxiality tolerance

0.8 mm；2 × IT12

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

ProductGroup 2 hardness

42–52 HRC

7.2 · EN 16983 page 11（PDF 13）

ProductRecommended total clearance for guide pin

0.8 mm；recommended guide pin diameter 50.2 mm

Table 12 · EN 16983 page 15（PDF 17）

ProductRecommended total clearance for guide sleeve

1 mm；recommended guide sleeve bore 126 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 0.12 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 0.675–0.9 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 2 · 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 2

表 2 · GB/T 1972.2 标准页4～5（PDF 11～12）

ProductStandard product designation

碟簧 ? 125-? 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 -0.15 / +0.1 mm；product limits 3.85–4.1 mm

表5 · GB/T 1972.2 标准页6（PDF 13）

ProductFree-height tolerance

deviation -0.15 / +0.3 mm；product limits 8.35–8.8 mm

表7 · GB/T 1972.2 标准页8（PDF 15）

ProductGroup 2 hardness

42–52 HRC

6.5.1 · GB/T 1972.2 标准页10（PDF 17）

ProductRecommended total clearance for guide pin

0.8 mm；recommended guide pin diameter 50.2 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

1 mm；recommended guide sleeve bore 126 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 0.12 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 0.675–0.9 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 2 · 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 0.666667–0.8 mm；product recommendation 0.666667 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 0.9–3.375 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=2.45098，De/t=31.25，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	125 mm (-0.4/+0 mm); limits 124.6–125 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	51 mm (+0/+0.3 mm); limits 51–51.3 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′	4 mm (-0.15/+0.05 mm); limits 3.85–4.05 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	8.5 mm (-0.15/+0.3 mm); limits 8.35–8.8 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	4.5 mm (-0.2/+0.45 mm); limits 4.3–4.95 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—	≤ 0.8 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	19817 N (-5/+10%); limits 18826.15–21798.7 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 16983:2017-09Standard row 190
Hardness—	42–52 HRCThis 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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