Overview
The SL28 High-Temperature-Resistance Ultra-Silent Tapered Roller Bearing is a precision-engineered solution designed for industries demanding extreme durability, thermal stability, and quiet operation under heavy-load conditions. Combining advanced material science with innovative design, this bearing excels in environments where conventional bearings fail due to heat, noise, or wear. Its tapered roller geometry ensures optimal radial and axial load distribution, making it ideal for high-speed machinery, industrial equipment, and automotive systems requiring longevity and reliability.
Certified to ISO 9001 and ASTM standards, the SL28 series incorporates proprietary heat-treatment processes and noise-dampening technologies, setting a new benchmark for performance in harsh operational settings.
Features
1. High-Temperature Resistance
Constructed from case-hardened chromium steel (AISI 52100) with a specialized carbonitriding surface treatment, the SL28 withstands continuous operating temperatures up to250°C (482°F). Its thermal-stable cage, made from machined brass or polyamide (PA66), prevents deformation under thermal stress.
2. Ultra-Silent Operation
Precision grinding of rollers and raceways, paired with a patented micro-geometry profile, reduces vibration and noise levels to below45 dB(A)at 3,000 RPM. Advanced lubrication retention channels ensure consistent grease distribution, minimizing friction-induced acoustic emissions.
3. Enhanced Load Capacity
Optimized contact angles (10°–24°) and large roller diameters enable30% higher dynamic load ratingscompared to standard tapered roller bearings. The bearing supports combined radial and axial loads up to120 kNradial and75 kNaxial.
4. Corrosion and Contamination Resistance
A triple-layered sealing system (rubber + fluorocarbon + labyrinth) provides IP67-rated protection against dust, moisture, and chemical ingress.
5. Customizable Configurations
Available in inch and metric sizes (15–300 mm bore), with optional coatings (TiN, DLC) or hybrid ceramic rollers (Si3N4) for specialized applications.
Benefits
· Extended Service Life: Reduced wear and heat generation increase operational lifespan by50–70%under comparable conditions.
· Energy Efficiency: Low friction coefficients (µ < 0.0015) cut power consumption by up to15%, enhancing sustainability.
· Minimal Maintenance: Sealed-for-life designs and high-quality greases (NLGI 2/3) eliminate relubrication needs for over20,000 hours.
· Versatility: Suitable for vertical or horizontal mounting in both single-row and paired arrangements.
· Cost Savings: Reduced downtime and replacement frequency lower total ownership costs.
Applications
The SL28 series is engineered for industries requiring robust, quiet, and heat-resistant rotational solutions:
· Steel & Metallurgy: Continuous casting machines, rolling mills.
· Mining & Construction: Crushers, conveyor systems, excavator slewing rings.
· Energy: Wind turbine gearboxes, hydroelectric generators.
· Automotive: Heavy-duty truck wheel hubs, EV drivetrains.
· Aerospace: Landing gear systems, auxiliary power units (APUs).
FAQ
Q1: What temperature range can the SL28 withstand?
A: The standard model operates reliably from-40°C to +250°C. Custom high-temperature variants (up to +350°C) are available with ceramic rollers and graphite cages.
Q2: How does the SL28 achieve ultra-silent performance?
A: Precision-machined components, optimized roller profiles, and vibration-dampening cage materials synergistically reduce noise.
Q3: Is relubrication required during service?
A: No. The SL28’s sealed design and high-performance grease ensure maintenance-free operation for 20,000+ hours under normal conditions.
Q4: Can this bearing replace spherical or cylindrical rollers?
A: Yes, where combined axial/radial loads exist. Consult our engineering team for load capacity and fitment compatibility.
Q5: Are certifications available?
A: The SL28 meets ISO 281, ABEC 3/5 tolerances, and RoHS/REACH compliance. Third-party test reports (e.g., SKF, Timken equivalency) are provided upon request.
Elevate your machinery’s performance with the SL28 series—where innovation meets industrial resilience.
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