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AboutThe 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.
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ProductsThe 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.
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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.
Wear Parts Failing Too Fast? It’s Often a Material Issue — Not Machining
2026-02-02
1. Three Common Issues Often Linked to Material Selection
Many manufacturers and maintenance buyers encounter similar problems:
Excessive wear — bushings, sliders, or guides wear out quickly and lose tolerance
High maintenance cost — frequent lubrication, downtime, and rising operating expenses
Scrap during final machining — internal defects may be exposed near finished size, leading to part rejection
While these issues are often attributed to machining or design, in many wear applications the root cause is material performance that does not match the actual working conditions, or unstable internal material quality.
2. Why Engineering Plastics Are Widely Used in Industry
Focus on Total Cost of Ownership, Not Unit Price
Engineering plastics are materials specifically developed for industrial service, emphasizing load-bearing capability, wear resistance, heat resistance, chemical resistance, dimensional stability, and long-term reliability.
They are not selected simply because of lower material cost, but because they help reduce total cost of ownership (TCO):
Lightweight — reduced system load and energy consumption
Wear-resistant / low friction — longer service life and less downtime
Chemical resistance — stable performance in oils, cleaning agents, acids, and alkalis
Machining-friendly — suitable for CNC turning and milling
Electrical insulation — ideal for structural and electrical components
In practice, engineering plastics help turn maintenance, downtime, and scrap risks into manageable costs.
3. A Practical Material Selection Approach: Define the Working Conditions First
Rather than asking “which material is the best,” it is more effective to clearly define the application.
Part type
Wear parts: bushings, sleeves, sliders, guides, rollers
Sealing or support parts: backing rings, spacers, chemical-resistant components
Structural parts: positioning blocks, supports, insulation components
Key working conditions
Operating temperature (continuous / peak)
Load type (static, impact, cyclic)
Friction conditions (continuous sliding, intermittent contact, abrasive particles)
Media exposure (oil, grease, chemicals, cleaning agents)
Dimensional tolerance requirements
Machining processes (turning, milling, drilling, slotting)
For wear parts, internal material stability is critical, as defects are often only revealed during final machining.
4. Common Engineering Plastics, Selected by Application
Wear-resistant and machinable
PA (Nylon) / MC Nylon (Cast PA6G) — widely used for bushings, sleeves, and sliders
UHMW-PE — liners, guides, and sliding rails
POM (Acetal) — dimensionally stable precision parts and gears
Low friction and chemical resistance
PTFE — seals, gaskets, and chemical-resistant components
High-performance materials
PEEK — suitable for high-temperature and chemically aggressive environments
5. Why MC Nylon (Cast PA6G) Is Commonly Chosen for Wear Parts
For friction and wear applications, MC nylon remains a proven and cost-effective option:
Good wear resistance and load-bearing performance
Machining-friendly — supplied as rods and sheets for CNC processing
Mature industrial usage — widely accepted as a metal replacement material
MC901 (Blue) vs. MC907 (Natural)
Both MC901 (blue) and MC907 (natural) are supplied to cover different operating conditions. Final selection should be based on load, temperature, friction behavior, media exposure, and tolerance requirements. Material recommendations can be provided based on your application.
6. What Matters Most When Purchasing Nylon Rods or Sheets
For distributors and machining shops, the primary risks are scrap, rework, and delivery delays, rather than small price differences.
Hebei Hongrui Environmental Technology Co., Ltd. supplies MC nylon rods and sheets (MC901 / MC907) with emphasis on:
Smooth surface finish and dimensional consistency
Controlled risk of internal defects such as pores or white core
Ultrasonic inspection conducted prior to storage and shipment
Stable supply capacity of 5,000 tons per year (Phase I)
These measures help reduce machining risk and improve delivery reliability.
7. Leave a Message for Material Recommendation and Quotation
If you are unsure whether MC901 (blue) or MC907 (natural) is suitable for your application, simply leave us a message. Based on your working conditions, we will recommend an appropriate grade and provide pricing and lead time.
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Wear Parts Failing Too Fast? It’s Often a Material Issue — Not Machining
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