Motor Counterweight — motor-counterweight-d01.jpg

Motor Counterweight

Tungsten alloy motor counterweights for precise mass distribution in compact vibration motors and micro-actuating systems — extreme density, shape accuracy and long service life via MIM/PM.

Materials: 90–95% tungsten alloy
Features: Density approaching 18.5 g/cm³ for slim motor designs, thin sections and asymmetric profiles via MIM, stable amplitude over long-term high-frequency operation
Application: Smartphone & wearable haptic motors, electric toothbrush motors, automotive micro-actuators, beauty & healthcare devices, industrial micro-mechanisms.

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Specifications

Parameter	Value
Material	90–95% tungsten alloy
Density	18.0–18.5 g/cm³
Hardness	HRA 90–95
Tensile Strength	800–1,000 MPa
Process	MIM, PM, optional CNC finishing
Tolerance	±0.02 mm or per customer requirement

FAQ

Frequently Asked Questions

What materials and process are used for Motor Counterweight?

Motor Counterweight 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 Motor Counterweight?

Typical specifications: Material: 90–95% tungsten alloy; Density: 18.0–18.5 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 Motor Counterweight?

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.