Paint-wetting impairment substances (PWIS) can cause surface defects such as craters or wetting issues even in the smallest amounts. For all applications where the highest surface quality is required – for example in painting and coating processes – all components used, including bearings, must be PWIS-compliant. This means that materials, lubricants, seals as well as manufacturing and packaging are selected and controlled in such a way that no paint-wetting impairment substances are released. PWIS compliance is tested and documented according to VDMA 24364. In this way, we ensure that our bearing solutions can be reliably used in sensitive production environments – regardless of the industry.
Typical Application Requirements
Customer Requirement:
PWIS compliance according to VDMA 24364 or other applicable test standards
Operating Conditions:
Typically used in paint-processing environments
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Critical Bearing Components:
- Seals
- Lubricants
- Preservatives
Examples of PWIS Sources:
- Silicones, plastics, plasticizers
- Lubricants, release agents
- Operating and auxiliary materials (cleaners, gloves, clothing, wipes, adhesive tapes, etc.)
- Cosmetics, personal care products, jewelry
- Food residues (transfer via hands)
- Carry-over from other areas
Our Development Services:
Developing bearings for PWIS-critical applications requires the utmost care and technical expertise. We analyze the specific requirements of your processes and carefully select materials, lubricants, and seals to ensure PWIS compliance in accordance with VDMA 24364. Through state-of-the-art testing methods, simulation-based design, and consistent process monitoring, we create solutions that provide maximum safety even in sensitive painting and coating environments. Our development services include consulting, prototype manufacturing, test planning, and complete documentation of PWIS compliance – individually tailored to your application.
Our typical development workflow for this application area:
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Analysis of current state
- Identification of critical bearing components
- Identification of potential contamination sources
Product optimization
- Cleaning
- Reworking individual components
- Various lubrication concepts
- Dry preservation
- Packaging concepts
Quality management
- PWIS compliance testing (in-house)
- PWIS compliance certificate (externally issued by a testing institution)