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BlogThe products involve multiple fields such as plastics, composite materials, and functional materials, and are applied in areas such as rail transit, special equipment, new energy vehicles, and machinery manufacturing.
MC Nylon vs POM: Which Is Better for Gears?
2025-07-24
Intro
When designing a lightweight gearbox, you often reach a crossroads: choose MC Nylon or POM (acetal)? One touts superior wear resistance; the other excels in precision. This article uses a single table and a quick decision tree to sort it out in about three minutes.
1 Three Key Factors for Gear Materials
Strength – Can it handle shocks and sudden torque spikes?
Wear life – How long before the teeth thin out?
Noise level – Does it run smoothly and quietly?
Only technical term: Coefficient of friction – the lower the number, the smoother and quieter the gear runs.
2 Performance Comparison Table
| Metric | MC Nylon | POM | Note |
|---|---|---|---|
| Density (g/cm³) | 1.15 | 1.41 | About 20 % lighter |
| Coefficient of friction | 0.25 | 0.35 | MC Nylon is quieter |
| Continuous service temp (°C) | 120 | 100 | MC Nylon handles higher heat |
| Self‑lubrication | ★★★ | ★★ | Fewer lube cycles |
| Material cost | Slightly higher | Slightly lower | POM 10‑15 % cheaper |
3 Cost Breakdown
Material price – POM is typically 10 % or so cheaper by weight.
Machining cost – MC Nylon can be cast as a single large piece, cutting assembly labor.
Maintenance cost – With 1.5‑2× the wear life, MC Nylon means fewer change‑outs. In many mid‑to‑heavy‑duty applications, MC Nylon wins the long‑term cost race.
4 Decision Tree
High temperature or heavy load?
Yes → Choose MC Nylon
No → Next question
Need ultra‑high positional accuracy (±0.02 mm)?
Yes → Choose POM
No → Next question
Strict weight‑reduction target (>20 %)?
Yes → Choose MC Nylon
No → Next question
Rock‑bottom budget?
Yes → Choose POM
No → MC Nylon is generally preferred
5 One Pro, One Con Example
Construction‑equipment reduction gear
Swapping metal for MC Nylon cuts weight by 60 %, boosts service life by 40 %, and extends maintenance intervals by half a year.
Desktop 3D‑printer micro‑gear
POM delivers ±0.02 mm precision at a lower cost, saving about USD 5 per printer.
Wrap‑Up & CTA
In short: High heat, heavy loads, or aggressive weight savings → MC Nylon; tight precision and ultra‑low cost → POM.
Not sure which suits your gear set? Click below to request free samples and receive a tailored material‑selection report within 24 hours!
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