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electropolished stainless steel parts

Mirror-Grade Electropolishing Surface Enhanced Wear-Resistant Parts

This precision equipment bushing is integrally machined from corrosion-resistant 304/316 stainless steel, with surface treated by electropolishing process to form a mirror-grade smooth surface. It significantly improves wear resistance, corrosion resistance and surface finish, serving as a core precision component for rotary transmission mechanisms and sealing systems.
Quick Info:
  • Processing Equipment: CNC Lathe, Centerless Grinder, Electropolishing Production Line
  • Dimensional Accuracy: ±0.01mm
  • Roundness/Cylindricity Tolerance: ≤0.005mm
  • Surface Roughness: Ra 0.05 ~ Ra 0.2 (After electropolishing)
  • Electropolishing Process: Environmental-friendly stainless steel electropolishing
  • Material: 304/316 Stainless Steel (316L / Duplex Stainless Steel optional)
  • Production Capabilities: Standard model mass production, non-standard customization, electropolishing process customization
  • Structure Form: Integral bushing, seamless smooth inner wall
  • Application Form: Rotary shaft sleeves, sliding bearings, sealing bushings, precision equipment support sleeves
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Electropolishing directly affects surface cleanliness, smoothness, and corrosion resistance. KT ensures uniform material removal at the microscopic level, producing smooth, bright, and consistent surface finishes. Even on complex geometries and precision parts, we maintain uniform results while minimizing variation in surface roughness.

For applications requiring high surface quality, electropolishing enhances visual consistency while improving corrosion resistance and cleanability—delivering more stable and reliable performance in real-world use.

Detailed Description

This precision electropolished bushing is a core support and anti-friction component for various rotary and sliding transmission systems. Integrally formed by turning and grinding from stainless steel bar, the inner and outer surfaces are treated by electropolishing to remove microscopic burrs and oxide layers, forming a uniform and dense mirror-grade smooth surface. It not only reduces friction coefficient and wear during shaft operation, but also significantly improves corrosion resistance and surface cleanliness, effectively preventing medium residue, scaling and corrosion, extending service life under high-cleanliness conditions such as food, pharmaceutical and semiconductor industries. Electropolishing does not affect dimensional accuracy and fit tolerance, and can directly replace ordinary bushings in scenarios requiring strict surface finish and cleanliness.

Manufacturing & Electropolishing Process

  1. Stainless steel substrate processing: turning, centerless grinding outer/inner diameter, precision grinding inner wall
  2. Pre-treatment: degreasing, rust removal and activation to ensure uniform electropolishing effect
  3. Electropolishing: environmental-friendly stainless steel electropolishing process, controlling current density and polishing time
  4. Post-treatment: neutralization, cleaning, passivation and drying to remove residual polishing solution and improve corrosion resistance
  5. Quality inspection: full inspection of dimensions, roundness, cylindricity, surface roughness and salt spray test

Overall process: Precision Grinding + Electropolishing Composite Process, focusing on achieving ultra-smooth, ultra-clean and corrosion-resistant surface strengthening through electropolishing, meeting high-cleanliness working conditions.

Application Industries

🏭 Automation Equipment Industry

Servo motor bushings, linear module sliding bearings, automation equipment drive shaft sleeves, precision slide guide bushings

🤖 Industrial Robot Industry

Robot joint bushings, robot 7th axis walking axis liners, robot end effector support sleeves, robot guide rail matching bushings

✈️ Aerospace Supporting Industry

Aviation ground test equipment bushings, aerospace tooling fixture liners, aviation precision transmission mechanism bushings, lightweight equipment support sleeves

🚗 Automotive Intelligent Manufacturing Industry

Automotive motor bushings, new energy vehicle drive motor liners, automotive transmission mechanism bushings, automotive air conditioning system support sleeves

🔬 Semiconductor & Electronics Industry

Semiconductor equipment support bushings, chip inspection equipment liners, SMT equipment transmission bushings, electronic precision equipment clean liners

🍱 Food & Pharmaceutical Industry

Food processing equipment bushings, pharmaceutical equipment clean liners, pharmaceutical machinery transmission support sleeves, medical device precision bushings

Detailed Parameter Table

Parameter ItemTechnical Specification
Product NameElectropolished Stainless Steel Bushing / Mirror-Grade Precision Liner
Main Material304/316 Stainless Steel (316L / Duplex Stainless Steel optional)
Manufacturing ProcessPrecision Grinding + Environmental-friendly Electropolishing Composite Process
Surface Roughness After PolishingRa 0.05 ~ Ra 0.2
Dimensional Accuracy±0.01mm
Roundness/Cylindricity Tolerance≤0.005mm
Polishing Removal Amount2~10μm (Controllable on request)
Salt Spray Test≥72 hours (Neutral salt spray)
Cleanliness LevelMeets high cleanliness requirements of food, pharmaceutical and semiconductor industries
Production CapabilitiesStandard model mass production, non-standard customization, electropolishing process customization
Working ConditionsRotary/sliding transmission support, high cleanliness and corrosion resistance requirements, food/pharmaceutical/semiconductor industrial environment

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