Technical articles
Spring technical center
Practical spring selection, process and sourcing guides
Use Dingli's technical articles to compare spring types, materials, surface finishes, duty conditions and RFQ details before sending drawings or placing an order.
Guide categories
Selection topics
About UsOct 30, 20265 min read
Meet Dingli Spring at PTC ASIA 2026: Booth E3-L3-2
Dingli Spring will exhibit at PTC ASIA 2026 in Shanghai from November 3 to 6. Meet us at Booth E3-L3-2 to discuss your spring requirements.
Read article
Spring TechnologyOct 22, 202613 min read
Rectangular Wire vs Round Wire Springs: Force, Rate and Travel
Compare rectangular and round wire compression springs by force at equal deflection, deflection at equal force, and the permitted working range. Real product photographs and an assumed linear example explain the differences.
#rectangular wire springs #round wire springs #spring rate
Read article
Spring TechnologyOct 18, 202614 min read
Custom Miniature Compression Springs: From Design to Optical Inspection
Sourcing custom miniature compression springs requires more than a sample or basic print. Discover how early design alignment and pre-delivery optical length inspection help engineering and incoming quality teams establish reliable spring acceptance criteria.
#miniature compression springs #optical length inspection #spring free length
Read article
Spring TechnologyOct 10, 20269 min read
How Round-Wire Springs Are Made: From Coiling to Quality Checks
Follow Dingli Spring's 65Mn round-wire coiling footage and see how drawing requirements, forming, end geometry, post-processing and inspection connect in a custom spring order.
#Round-wire springs #65Mn spring steel #Spring manufacturing
Read article
Die SpringsOct 2, 20268 min read
Die Spring Fatigue Life: Plan Cycles Before a Tooling Run
Calculate the production-cycle requirement, separate preload from travel, and use conditional catalog data and sample evidence to plan inspection and maintenance.
#die springs #fatigue life #production cycles
Read article
Die SpringsOct 2, 20268 min read
ISO 10243 Die Spring Color Code: Chart and Selection Checks
ISO 10243 uses green, blue, red and yellow for four core load classes. Compare the color chart, then verify housing fit, working loads, preload and total deflection.
#ISO 10243 #die spring color code #die spring selection
Read article
Die SpringsOct 2, 20268 min read
Replacement Die Springs: Match Color, Force and Fit
Same color and nominal size do not prove a die spring is interchangeable. Build a replacement record around the catalog series, installed heights and required forces, then verify fit and acceptance before changing suppliers.
#die springs #replacement die springs #color codes
Read article
Torsion SpringsOct 2, 20268 min read
Torsion Spring Winding Direction: Match Hand, Load and Installation Angle
A torsion spring can fit the shaft and still provide the wrong return action. Align winding hand, viewing direction, angular positions and mounting clearance before approval.
#torsion spring winding direction #spring installation #preload angle
Read article
Die SpringsOct 1, 20267 min read
Die Spring Fatigue Testing: What Buyers Should Verify
A practical guide to defining preload, working travel, acceptance criteria and report evidence for die spring fatigue testing and supplier RFQs.
#die springs #fatigue testing #tooling
Read article
Spring TechnologyJul 19, 20267 min read
How to prevent spring rust in storage before the monsoon season: It's not as simple as just applying oil
Rust spots on springs typically stem from issues across multiple stages. This article explains how to achieve truly stable rust prevention before the plum rain season, covering three key phases: factory shipment, transportation, and receiving/storage, to avoid discovering damage only after delivery.
#spring rust prevention #spring storage #plum rain season
Read article
Compression SpringsJul 18, 20265 min read
Why Compression Springs Fail Early: 5 Common Mistakes in Selection and Installation
Many compression springs fail prematurely not solely due to material issues, but because of initial errors in selection and installation logic. This article breaks down the five most common mistakes to help projects identify risks earlier.
#compression spring #spring failure #spring selection
Read article
Spring TechnologyJul 18, 20265 min read
How to Choose Spring Surface Finish: What to Consider for Moisture, Corrosion Resistance, and Appearance Requirements
Surface finish selection for springs should not be based solely on habit or naming conventions. This article outlines the decision-making logic from perspectives of environment, aesthetics, storage conditions, and actual service conditions, to help engineering and procurement reduce misjudgment.
#Spring Surface Finish #Spring Rust Protection #Spring Corrosion Resistance
Read article
Spring TechnologyJul 18, 20266 min read
Which parameters and drawings to prepare before inquiring about custom springs - procurement and engineering teams should not overlook these items.
Many custom spring inquiries require repeated communication not because of difficult cooperation from the manufacturer, but due to incomplete preliminary information. From the perspective of procurement and engineering collaboration, this article outlines the parameters, drawings, and sample information that should be properly prepared before sending an inquiry.
#custom spring #spring request for quotation #spring drawing
Read article