Eccentric Weight
Tungsten alloy eccentric weights for compact vibration motors in consumer electronics, beauty devices and portable instrumentation — high density, ±0.02 mm MIM tolerances and consistent balance at high RPM.
- Materials
- 90–95% tungsten alloy
- Features
- Nearly twice the density of steel, design freedom for miniature complex shapes, uniform density with minimal internal defects, excellent wear and impact resistance
- Application
- Smartphone linear/rotary vibration motors, electric toothbrushes, beauty & personal care devices, wearables, precision instruments.
Specifications
| Parameter | Value |
|---|---|
| Material | 90–95% tungsten alloy |
| Density | Up to 18.5 g/cm³ |
| Hardness | HRA 90–95 |
| Tensile Strength | 800–1,000 MPa |
| Tolerance | ±0.02 mm (MIM) |
| Surface Finish | Polished or CNC-refined |
Frequently Asked Questions
What materials and process are used for Eccentric Weight?
Eccentric Weight is made from 90–95% tungsten alloy and is formed by MIM/PM (metal injection molding / powder metallurgy) near-net-shape and sintered to a relative density of ≥ 98%, which keeps mechanical properties close to wrought material.
What are the key specifications of Eccentric Weight?
Typical specifications: Material: 90–95% tungsten alloy; Density: Up to 18.5 g/cm³; Hardness: HRA 90–95. The full parameter list is in the specifications table on this page; custom requirements can be discussed against your drawing.
What is the MOQ and lead time for Eccentric Weight?
MOQ is 1000 pcs. Mold lead time is about 20 days (mold fee typically RMB 20–40k depending on part geometry), and production lead time is about 7 days once the mold is validated; secondary processing adds 3–5 days.
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