Compression spring LB series

waveflat wirestainless steel

Description
Single-turn gap wave washers (single-turn gap wave springs) are single-layer, thin-ring elastic elements formed from metal strip or flat wire. They are designed to provide axial preload in confined spaces, for short deflections and low to medium forces. The open gap and free ends allow the outside diameter to expand during compression, preventing binding in a bore and improving fatigue life.

Function & principle
The gap and wave profile give the washer its elasticity. When compressed during assembly, the washer flattens and its peaks engage mating surfaces or a nut, helping to prevent fastener loosening and to reduce vibration and play.

Advantages

• Effective anti-loosening and anti-vibration performance
• Low-profile, space-saving design suitable for tight assemblies
• Low spring rate for fine load control and reduced compression force
• Consistent force over a wide deflection range and reduced operational noise
• Simple production process and cost-effective for series manufacture

Overview
Single-turn gap wave springs deliver efficient elastic compression in narrow radial or axial spaces. Available in open (gap) and closed types, they can be produced to non-standard dimensions for customer requirements and can substantially reduce component size and weight in many applications.

Typical applications

• Bearing preload: provides stable elastic force to remove play, reduce vibration and noise and extend bearing life
• Electrical connectors: maintains contact and locking force under compression
• Release bearings and clutch components: provides elastic compensation for eccentricity and alignment
• Water pump seals and mechanical seals: supplies preload and compensation to reduce leakage and wear

Quick details

• Product name: Single-turn gap wave spring / Single-turn gap wave washer
• Brand: Lisheng Spring
• Materials: stainless steels (304, 316, 631), 17-7PH, oil-tempered steels, hard-drawn steels, beryllium copper, phosphor bronze, 65Mn, A-286, Inconel X-750/X-718, Elgiloy, MONEL
• Surface treatments: zinc/chrome/nickel plating, painting, sand blasting, powder coating, polishing, anodizing, oxidation, electroplate, passivate
• Standard: non-standard / custom designs available

Materials available

• Oil tempered (SAE 1070–1090)
• Hard drawn (SAE 1060–1075)
• Stainless steel: 304, 316, 631; 17-7PH (SUS)
• Beryllium copper, phosphor copper
• 65Mn, A-286; Inconel X-750/X-718, Elgiloy; MONEL K-500/400

Processing steps
Design → Drawing → Flatten wire → CNC forming → Heat treatment → Surface finishing → Quality inspection → Packing

Specification (table)
Part Number | Bearing O.D. (mm) | Clears Shaft Diameter (mm) | Load (N) | Work Height (mm) | Free Height (mm) | Number of Waves | Thickness (mm) | Radial Wall (mm) | Spring Rate (N/mm)
LB-0035 | 9 | 6.86 | 25.8 | 1 | 1.5 | 3 | 0.2 | 0.81 | 52
LB-0039 | 10 | 7.49 | 27.6 | 1 | 1.57 | 3 | 0.2 | 1.02 | 48
LB-0043 | 11 | 8.46 | 29.4 | 1 | 1.83 | 3 | 0.2 | 1.02 | 35
... (see full specification table for other part numbers)

Wave spring measurements
Dimensional diagrams and measurement guidance are available in product documentation to assist selection and specification.

Characteristics / technical specifications

• SKU: 1f7a54f45e63
• Commercial name: Single-turn gap wave spring / washer
• Function: axial preload, anti-loosening, vibration absorption
• Diameter range (examples): 9 mm to 90 mm (see table)
• Thickness range (examples): 0.2 mm to 0.76 mm
• Typical load range (examples): ~25 N to ~249 N depending on model and material
• Custom designs available to meet application and stress conditions