Conical Disc Springs Washer

Conical Disc Springs Washer

The Black DIN 2093 Disc Springs, known as Belleville washers, are cone-shaped fasteners with a black oxide coating, designed to provide robust axial preload and vibration resistance in bolted joints. Constructed from alloy spring steel like 60Si2Mn or 50CrVA for high elasticity and fatigue endurance, or stainless steel (304/316) for corrosive environments, these disc springs generate strong spring force when compressed, compensating for bolt relaxation and maintaining consistent tension. The black oxide finish enhances corrosion protection while offering a non-reflective, wear-resistant surface suitable for industrial aesthetics. Compliant with DIN 2093 standards, they feature outer diameters from 8mm to 112mm, making them versatile for heavy machinery, automotive suspensions, wind turbines, and equipment assemblies. These disc springs excel in absorbing shocks and preventing loosening in dynamic conditions, reducing maintenance and improving joint reliability. Manufactured by Duojia in Hebei, China, they adhere to ISO9001, ISO14001, and ISO45001 for quality and sustainability. With wholesale options, a monthly capacity of 10,000 pieces, and global exports, these black oxide disc springs offer an economical, high-performance solution for engineers needing effective axial preload in space-constrained, high-vibration applications, ensuring long-term stability and efficiency.

Product Details

Black DIN 2093 Disc Springs feature a conical, disc-like form that compresses to deliver axial force, ideal for maintaining preload in assemblies subject to thermal changes or vibrations. The black oxide coating, applied to alloy or stainless steel bases, provides moderate rust resistance and a matte finish that minimizes glare and enhances durability in abrasive settings. Sizes range from 8mm to 112mm outer diameter, with precise ratios for optimal deflection and load capacity. Duojia’s forming process ensures consistent thickness and spring rate, certified by SGS for reliability. Installation positions the spring between the bolt/nut and component; tighten to compress, creating tension that locks the joint—stacking multiples adjusts force output without additional space. Avoid exceeding load limits to prevent flattening, and inspect regularly for wear in cyclic applications, replacing as needed. These springs are perfect for automotive components, industrial valves, and turbine housings, where they mitigate creep and extend service life. With custom configurations available, minimum orders of 100 pieces, and 14-30 day delivery in protective packaging, they are shipped worldwide, supporting efficient preload solutions in heavy and general industries.

Product Parameters

ParameterDetails
Product NameBlack DIN 2093 Disc Springs – Axial Preload Solution
MaterialAlloy Spring Steel (60Si2Mn, 50CrVA); Stainless Steel (304, 316)
Grade4.8, 8.8, 10.9, 12.9, A2-70, A4-70, A4-80, etc.
Surface TreatmentBlack Oxide Coating
Outer Diameter (d2 max)8mm-250mm (nominal, h12 tolerance)
Inner Diameter (d1 min)4.2mm-127mm (nominal, H12 tolerance)
Thickness (t)0.3mm-10mm
Free Height (h1)0.25mm-7mm
Total Height (h)0.55mm-17mm
StandardsDIN 2093, ISO9001, ISO14001, ISO45001, SGS
Load CapacityHigh axial spring force for preload
PackagingSmall Pack + Carton + Pallet or Bag/Box with Pallet
Minimum Order100 Pieces
Supply Ability10,000 Pieces per Month; 500 Tons per Month
Delivery Time14-30 Days depending on quantity

Product Features

Black DIN 2093 Disc Springs distinguish with their conical geometry, enabling high axial force in compact spaces, effectively countering bolt creep and vibrations better than traditional springs. The black oxide coating on alloy or stainless steel enhances abrasion resistance and provides a low-friction, anti-corrosive surface, extending usability in gritty or moist conditions without hydrogen risks. Customizable stacking adjusts deflection and load precisely, with ratios optimizing energy storage for specific applications. Duojia’s engineering supports tailored sizes and materials, all validated for spring rate and fatigue through rigorous testing. These springs absorb impacts seamlessly, maintaining preload in fluctuating temperatures, and their polished edges prevent component damage during compression. Requiring no special tools for setup, they offer easy integration and removal, ideal for maintenance-heavy environments. Lightweight design minimizes added mass, while sustainable production reduces environmental footprint per ISO guidelines. This fusion of high elasticity, corrosion defense, and adaptability ensures vibration damping and tension retention, making them a premium choice for scenarios demanding resilient, efficient preload with minimal space and long-term dependability.

Product Applications

Black DIN 2093 Disc Springs are pivotal for axial preload in vibration-intensive bolted joints across sectors. In heavy machinery, they stabilize connections in presses or cranes, absorbing loads to prevent loosening during operation. Automotive suspensions utilize them to maintain tension in shock absorbers, enhancing ride quality under dynamic stresses. Wind turbines benefit from their application in blade hubs, compensating for thermal expansions to ensure reliable energy output. Industrial equipment like valves and pumps employs these springs to counter pressure fluctuations, reducing wear in high-cycle systems. Duojia’s wholesale options facilitate bulk use in aerospace for secure, lightweight fastening in turbulent conditions. With straightforward placement and compression via bolting, they enable rapid assemblies, needing only routine checks for optimal function. Their design extends joint life, boosting safety in critical setups from manufacturing to infrastructure. Adaptable for custom stacks, they improve efficiency in both standard and specialized projects, supporting global innovations in engineering and automation.