Frequently Asked Questions

Extreme Bearing units are manufactured from AISI 316 stainless steel and designed specifically for extreme conditions. They offer up to 5x higher load capacity, complete submersibility up to 40 meters, temperature range from -79°C to +260°C, and superior corrosion resistance compared to standard bearing units.

AISI 316 (also known as 1.4401/1.4404) is a molybdenum-bearing austenitic stainless steel. It offers excellent corrosion resistance, particularly against chlorides and marine environments, making it ideal for harsh industrial applications.

Yes, with our Water-Tight (WT) seal configuration, bearing units are rated for complete submersion up to 40 meters deep. They are ideal for marine applications, underwater equipment, and environments with water exposure.

Standard configurations operate from -40°C to +150°C. With High Temperature (HT) seals, the range extends from -79°C to +260°C. Extended temperature options (HT+) can reach -100°C to +300°C for specialized applications.

Yes, we offer ATEX certified configurations for use in explosive atmospheres (ATEX Zone 1 & 2). These are specifically designed for industries with gas or dust explosion risks, such as chemical plants and grain handling facilities.

Extreme Bearing units typically provide 3-5x higher load capacity compared to standard bearing units of the same shaft size. This is achieved through precision engineering, superior materials, and optimized bearing geometry.

Yes, with Food Grade (FG) seal options, our bearing units are FDA and EU certified for direct food contact. They use NSF H1 approved lubricants suitable for food processing and pharmaceutical industries.

Use our Product Configurator to select: 1) Housing type (flange, pillow, take-up, etc.), 2) Bearing type (spherical roller, ball, etc.), 3) Shaft diameter, 4) Sealing configuration, 5) Special requirements (ATEX, food-grade, etc.). You can also contact our technical team for application-specific recommendations.

Standard configurations: 2-3 weeks. Custom configurations: 4-6 weeks. ATEX certified units: 6-8 weeks due to certification requirements. Contact us for expedited delivery options.

Yes, we can provide sample units for testing and validation. Contact our sales team to discuss your requirements and arrange for evaluation units.

Yes, our bearing units use standard mounting dimensions and are direct replacements for major brands including SKF, FAG, Timken, and NTN. Check our interchangeability tables for specific cross-references.

Lifespan depends on operating conditions. In properly maintained applications, our bearings typically last 5-10 years or more, significantly longer than standard bearings in harsh environments. Case studies show units operating 5+ years without failure in conditions where standard bearings failed within 3 months.

Relubrication intervals depend on operating speed, temperature, and environment. General guideline: Every 6 months for normal conditions, every 3 months for harsh environments or high speeds. Sealed units with permanent lubrication typically don't require relubrication.

Use high-quality lithium complex grease for general applications. Food-grade applications require NSF H1 approved lubricants (supplied with FG units). High-temperature applications need synthetic grease rated for your operating temperature.

Yes, spherical roller bearings (T-type) are particularly well-suited for applications with shock loads and vibration. The self-aligning feature and robust construction handle misalignment and impact loading effectively.

We offer 9 housing types: Flange Block (4-bolt), Compact Block, 3-Bolt Bracket, Round Flanged, Pillow Block, Take-Up Block, One-Way Clutch, 2-Bolt Flange, and Split Plummer Block. Each designed for specific mounting and application requirements.

Yes, all products include downloadable STP/STEP CAD files and PDF technical drawings. These are available directly on each product page for easy integration into your designs.

For accurate quotes, provide: 1) Product SKU or configuration details, 2) Quantity needed, 3) Application details (environment, temperature, loads), 4) Delivery location, 5) Any special requirements or certifications needed.

AISI 316 contains 2-3% molybdenum, which AISI 304 lacks. This molybdenum provides superior resistance to chloride-induced pitting corrosion, making AISI 316 up to 40% more resistant to salt water damage. For marine environments, AISI 316 offers 5-10x longer lifespan compared to AISI 304.

PREN (Pitting Resistance Equivalent Number) measures resistance to pitting corrosion. AISI 304 has PREN of 18-20, while AISI 316 has 24-26. Higher PREN means better protection against chlorides and acids. For harsh environments, PREN above 24 is recommended.

AS seals: Standard protection for dry environments. CC seals: Contact seals for dust/dirt protection. VK seals: High-speed applications up to 3000 RPM. RSC seals: Heavy contamination (cement, mining). WT seals: Complete water submersion up to 40m. FG seals: Food-grade FDA certified. Choose based on your environment and contamination level.

Extreme Bearing units provide 3-5x higher load capacity than comparable SKF, FAG, or Timken units of the same shaft size. For example, a 40mm shaft Extreme Bearing unit handles 45kN dynamic load vs 9-15kN for standard units. This is achieved through AISI 316 material and optimized bearing geometry.

Yes, AISI 316 stainless steel offers excellent resistance to most acids and alkaline solutions. It handles sulfuric acid (up to 10%), phosphoric acid, citric acid, and alkaline cleaners well. For highly concentrated acids or hydrochloric acid, contact our technical team for specialized seal recommendations.

ATEX certification allows use in explosive atmospheres. Zone 1: Areas where explosive gas/vapor mixtures are likely during normal operation. Zone 2: Areas where explosive atmospheres are unlikely or exist only briefly. Our ATEX units meet directive 2014/34/EU and are certified for both zones.

Permanently sealed units (lifetime lubrication) require zero maintenance under normal conditions. Relubricatable units need grease every 6 months (normal) or 3 months (harsh environments). Water-tight sealed units should be inspected annually for seal integrity. No disassembly needed during operation.

Spherical roller bearings (T-type): Handle 3-5x higher loads, self-aligning up to 3°, ideal for shock loads and heavy machinery. Ball bearings (B-type): Lower friction, higher speeds (up to 4000 RPM), better for light loads and precision applications. Choose T for heavy industry, B for speed-critical applications.

Yes, we use industry-standard ISO and DIN mounting dimensions. Our units are drop-in replacements for SKF, FAG, Timken, NTN, and NSK housings. No modifications to existing mounting holes, bolt patterns, or shaft diameters required. Check our dimensional drawings for exact specifications.

Yes, with Food Grade (FG) configuration. FG units meet FDA 21 CFR 177.2600 and EU Regulation 1935/2004 for direct food contact. They use NSF H1 certified lubricants (safe if incidental food contact occurs). Ideal for meat processing, dairy, beverages, and pharmaceutical manufacturing.

Top 3 causes: 1) Corrosion from salt water or chemicals (60% of failures) - solved by AISI 316. 2) Contamination by water/dust entering seals (25%) - solved by WT or RSC seals. 3) Overloading beyond capacity (15%) - solved by 5x higher load ratings. Standard bearings fail in 3-6 months; Extreme Bearings last 5+ years in same conditions.

Calculate dynamic load: multiply actual load by application factor (1.5 for smooth operation, 2.0 for moderate shock, 3.0 for heavy shock). Example: 10kN actual load with moderate shock = 20kN required capacity. Static load: use peak load during standstill. Our product pages list both dynamic and static ratings. Contact us for detailed calculations.