Compression spring NSSB series

coiledwaveflat wire

Overview

• Nested wave springs are pre-stacked in parallel from one continuous filament of flat wire.
• The need to stack individual springs for higher loads is no longer necessary.
• Nested springs result in a spring rate that increases proportionally to the number of turns.
• They can exert tremendous forces yet maintain the precision of a circular-grain wave spring.
• In many applications, nested wave springs replace belleville (disc) springs where a high but accurate force is required.

Description
Heavy-coil wave springs (also called nested wave springs or stacked wave springs) vary by number of waves and layers; stiffness changes accordingly. They are mainly used where installation space is limited but a certain stroke and larger load capacity are required. These springs are widely used across industries and can be designed and supplied to specific requirements, including custom samples and drawings.

Advantages
Nested wave springs have multiple turns coiled in parallel to generate higher forces compared with single-coil wave springs. They are used in automotive, oil & gas, connector industries and in applications such as seals, valves and bearing preload. The force produced by a nested wave spring increases proportionally to the number of turns. When compressed, wave springs develop bending or tensile stress; for reliable operation it is recommended that calculated working stress remains below the minimum tensile strength of the material in static applications and below 80% of minimum tensile strength in dynamic applications. Nested designs provide required loads without stacking multiple parts and distribute stress evenly across the part.

Assembly and Automation
Nested wave springs are suitable for automated pick-and-place assembly because they have no floating ends and coils sit tightly together, preventing tangling. Their configuration keeps multiple layers aligned for consistent loading and facilitates robotic handling and vibratory feeding.

Specification (table)
Part No. | Operates in Bore Diameter (mm) | Lears Shaft Diameter (mm) | Load (N) | Work Height (mm) | Free Height (mm) | Waves | Turns | Thickness (mm) | Radial Wall (mm) | Spring Rate (N/MM)
NSSB-0063-L3 | 19 | 13.36 | 106.8 | 1.83 | 3.31 | 3 | 2 | 0.25 | 1.98 | 72
NSSB-0075-L2 | 22 | 15.75 | 124.6 | 1.88 | 3.14 | 3 | 2 | 0.3 | 2.39 | 99
NSSB-0075-L3 | 24 | 17.02 | 133.5 | 1.88 | 3.73 | 3 | 2 | 0.3 | 2.39 | 72
NSSB-0087-L2 | 26 | 18.14 | 142.4 | 2.34 | 3.37 | 3 | 2 | 0.36 | 3.18 | 137
NSSB-0087-L3 | 28 | 20.07 | 151.3 | 2.34 | 3.79 | 3 | 2 | 0.36 | 3.18 | 104
NSSB-0095-L2 | 30 | 21.87 | 169.1 | 2.34 | 4.42 | 3 | 2 | 0.36 | 3.18 | 81
NSSB-0095-L3 | 32 | 23.67 | 178.0 | 2.39 | 4.07 | 3 | 2 | 0.41 | 3.38 | 106
NSSB-0102-L2 | 35 | 26.42 | 195.8 | 2.39 | 4.94 | 3 | 2 | 0.41 | 3.38 | 77
NSSB-0102-L3 | 37 | 28.65 | 204.7 | 2.44 | 4.72 | 3 | 2 | 0.46 | 3.38 | 90
NSSB-0110-L2 | 40 | 31.01 | 222.5 | 2.44 | 5.70 | 3 | 2 | 0.46 | 3.38 | 68
NSSB-0110-L3 | 42 | 33.50 | 231.4 | 2.44 | 3.71 | 3 | 2 | 0.46 | 3.38 | 182
NSSB-0118-L2 | 47 | 38.18 | 258.1 | 2.44 | 4.52 | 4 | 2 | 0.46 | |

Caractéristiques / spécifications techniques

• Manufacturer / Brand: Lisheng Spring (Zhejiang Lisheng Spring Co.,Ltd)
• Materials available: Carbon steel; Stainless steel; 17-7PH (SUS631)
• Product category: Nested Wave Springs
• Example part number prefix / series: NSSB (multiple NSSB-xxxx-Lx variants shown)
• SKU on page: c1e2a53b5677
• Main image: 202106091022439443.jpg