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Conical Compression Spring Progressive Force Variable Diameter Custom
Conical compression springs feature coils that gradually increase from top to bottom, providing progressive force characteristics within limited height constraints.
Compression Spring Quick Detail
Conical compression springs provide progressive force—soft initially to absorb light shock, then increasing stiffness for rigid stop. Solid height is extremely low, saving installation space. Custom top/bottom OD, free length, and force curve available with 48-hour sampling.
Compression Spring Product Description
Unlike standard cylindrical springs, conical springs achieve a final solid height just slightly greater than a single wire diameter as coils sequentially bottom out—dramatically saving vertical space. The progressive force characteristic offers unique advantages in battery contacts and shock buffers: low initial force for easy battery insertion; high final force for reliable electrical contact or rigid support.
Tingfeng Hardware precisely designs taper ratio and pitch distribution to achieve specific force curves. Using CNC spring formers for direct manufacturing eliminates tooling requirements. We can reverse-engineer designs from target forces at different compressed heights or manufacture directly from CAD models. Small batches from 100 pieces with 48-hour sampling and 15 years of spring manufacturing experience.
Compression Spring Features & Advantages
Feature
Advantage to You
Progressive Force
Soft initially for easy assembly; firm finally for reliable stop or contact force
Extremely Low Solid Height
Compressed height nearly equals wire diameter, saving significant vertical space
No Tooling Fee
CNC direct forming, ideal for small batches and rapid iteration
Custom Force Curve
Taper ratio and pitch designed to your load requirements—precisely matches application
48hr Rapid Sampling
Quickly validate conical spring performance in your prototype
Compression Spring Product Specifications
Specification Item
Detail / Capability
Notes / Description
Top OD
3mm - 12mm
Small end
Bottom OD
8mm - 25mm
Large end
Free Length
5mm - 40mm
Solid height extremely low
Wire Diameter
0.2mm - 1.5mm
Constant wire dia within spring
Force Characteristic
Progressive
Provide force at 2-3 deflection points
End Type
Closed not ground (std) / Closed & ground
Conical ends can also be ground
Material
Music wire / SUS304
Other materials upon request
Sample Lead Time
48-72 hours
Simple conical may be 48hr
Compression Spring Applications
Battery Compartments & Contacts: Positive/negative springs for AA, AAA, 18650 battery holders—low initial force for easy insertion, high final force for reliable contact
Drone & Robot Damping: Micro buffer springs for landing gear and gimbals; progressive shock absorption
Home & Office Equipment: Force-balance springs for auto-retract blinds and lift table legs—minimal space usage
Frequently Asked Questions (FAQ)
Q: Can you handle complex custom designs and provide design optimization suggestions?
A: Absolutely. This is our core expertise. We provide free DFM analysis within 3-5 days, often helping clients achieve 15-30% cost reduction through design for manufacturability.
Q: How do you ensure quality consistency and handle defect issues?
A: We implement a rigorous 4-stage QC system with 100% full inspection. Our track record shows 99.99% qualification rate.
Q: What are your lead times and how do you handle urgent orders?
A: Standard lead times: 3-7 days for prototypes, 7-15 days for mass production. We offer VIP prioritization cutting lead times by up to 30%.
Q: Will I get timely responses and professional support throughout the project?
A: Yes. You get a 1v1 exclusive consultant with 1-hour initial response commitment and 24-hour technical support.
Q: Can you provide material certifications and environmental compliance reports?
A: Yes. We provide material certifications and environmental test reports (RoHS, REACH compliant) upon request.
Q: How do you protect my designs and intellectual property?
A: We start with mutual NDA and implement strict mold ownership protection and confidential data security measures.
Q: What are your payment terms and MOQ requirements?
A: We offer flexible payment terms (T/T, L/C at sight) and MOQ from 1 piece for prototyping.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
the year20
Total Annual:
20000000-30000000
Employee Number:
60~70
Ecer Certification：
Verified Supplier
Company Profile
Tingfeng Hardware — Your Partner for High-Precision Non-Standard Components
Since 2010, with 15 years of dedication, we focus on one mission: solving your “un-makeable, small-batch, urgent, and difficult” non-standard part manufacturing challenges.
Core Streng... Company Profile
Tingfeng Hardware — Your Partner for High-Precision Non-Standard Components
Since 2010, with 15 years of dedication, we focus on one mission: solving your “un-makeable, small-batch, urgent, and difficult” non-standard part manufacturing challenges.
Core Streng...
