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BS EN 16983:2016 Disc springs. Quality specifications. Dimensions, 2016
- Contents Page
- European foreword
- 1 Scope
- 2 Normative references
- 3 Terms, definitions, symbols, units and abbreviated terms [Go to Page]
- 3.1 Terms and definitions
- 3.2 Symbols, units and abbreviated terms
- Table 1 — Symbols, units and abbreviated terms
- 4 Dimensions and designation [Go to Page]
- 4.1 General
- Figure 1 — Single disc spring of group 1, 2 or 3 (sectional view), including the relevant points of loading [Go to Page]
- 4.2 Disc spring groups
- Table 2 — Disc spring groups [Go to Page]
- 4.3 Dimensional series
- Table 3 — Dimensional series
- 5 Spring material
- 6 Spring dimensions, nominal sizes, design values [Go to Page]
- 6.1 Dimensional series A
- Table 4 — Disc springs with ; ; E = 206 000 MPa; µ = 0,3 [Go to Page]
- 6.2 Dimensional series B
- Table 5 — Disc springs with ; ; E = 206 000 MPa; µ = 0,3 [Go to Page]
- 6.3 Dimensional series C
- Table 6 — Disc springs with ; ; E = 206 000 MPa; µ = 0,3
- 7 Manufacture [Go to Page]
- 7.1 Manufacturing process and surface quality
- Table 7 — Prescribed manufacturing processes and surface quality [Go to Page]
- 7.2 Heat treatment
- 7.3 Shot peening
- 7.4 Presetting
- 7.5 Surface treatment and corrosion protection
- 8 Tolerances [Go to Page]
- 8.1 Tolerances on diameter
- 8.2 Tolerances on thickness
- Table 8 — Tolerances on thickness [Go to Page]
- 8.3 Tolerances on free overall height, l0
- Table 9 — Tolerances on free overall height, l0 [Go to Page]
- 8.4 Tolerances on spring load [Go to Page]
- 8.4.1 Single disc springs
- Table 10 — Tolerances on spring load [Go to Page]
- 8.4.2 Springs stacked in series
- Figure 2 — Loading and unloading curves obtained from testing springs stacked in series
- Table 11 — Minimum spring load at unloading, as a percentage of the spring load at loading at Lt [Go to Page]
- 8.5 Clearance between disc spring and guiding element
- Table 12 — Recommended clearance between disc spring and guiding element
- 9 Creep and relaxation
- Figure 3 — Permissible relaxation for disc springs made of carbon steel in accordance with EN 10132-4
- Figure 4 — Permissible relaxation for disc springs made of alloy steel in accordance with EN 10089 and EN 10132-4
- 10 Permissible stresses [Go to Page]
- 10.1 Static and rarely alternating loading
- 10.2 Dynamic loading [Go to Page]
- 10.2.1 General
- 10.2.2 Permissible loading
- Figure 5 — Fatigue life of not shot peened disc springs with t < 1,25 mm
- Figure 6 — Fatigue life of not shot peened disc springs with 1,25 mm ≤ t ≤ 6 mm
- Figure 7 — Fatigue life of not shot peened disc springs with 6 mm < t ≤ 14 mm
- 11 Testing [Go to Page]
- 11.1 General
- 11.2 Check of dimensions and other spring characteristics
- Table 13 — characteristics and quality levels of springs [Go to Page]
- 11.3 Hardness testing
- 12 Other relevant requirements
- Bibliography [Go to Page]