Our 6803 bearing is available in open, shielded (ZZ), or sealed (2RS) configurations to match your environmental requirements. The thin-section design provides engineers with greater flexibility in designing compact systems for semiconductor equipment, optical scanners, drone motors, and high-speed automation systems.
Dimensions: Bore: 17 mm, Outer Diameter: 23 mm, Width: 4 mm
Dynamic Load Rating (Cr): 2.8 kN
Static Load Rating (Cor): 1.45 kN
Material:
Rings: Gcr15 Chrome Steel;
Balls: Silicon Nitride (Si3N4);
Cage: Reinforced Nylon 66/Stainless Steel (optional)
Max Operating Speed: Up to 40,000 RPM (grease lubricated)
Weight: Approximately 0.015 kg (30% lighter than all-steel equivalents)
980811NT is a type of bearing specifically designed for the harsh environments encountered by forklifts and material handling equipment. This bearing boasts outstanding radial load-bearing capacity and durability.
Key Dimensions:
Bore Diameter (d): 55 mm
Outer Diameter (D): 80 mm
Width (B): 23 mm
Load Ratings: Engineered for high radial load capacity. The dynamic load rating (Cr) and static load rating (Cor) are optimized to handle the significant weight and stress encountered in forklift wheel end applications.
Precision & Clearance: Manufactured to standard (P0) or higher precision grades as required, with a radial internal clearance (C3/C4 is common) suitable for the press-fit mounting and thermal expansion typical in drive assemblies.
Cage: Features a high-strength, precision-stamped steel cage. This design ensures precise roller guidance, excellent durability under high-speed and high-load conditions, and contributes to the long service life of the forklift bearing.
Our heavy duty aluminium alloy rotating bearing with multiple sizes for your choice: 4/6/8/10/12/14/16/18/20inch(Optional). It's thick and greatly improve the capacity of load bearing capacity.
Example: 12-inch turntable
For 24-inch (610mm) table tops,we recommend using a 12-inchLazy Susan bearing.
Ideal for precision spindles, aerospace, medical devices, and high-end industrial equipment, our ceramic bearing balls deliver longer service life, reduced maintenance, and superior operational efficiency.
Precision Grades & Dimensional Data:
Grades: G5, G10, G16, G25, G40, G100 (per ISO 3290). G5 represents the highest commercial grade with near-perfect sphericity and minimal diameter variation.
Diameter Range: From 1 mm (0.0394") to 50.8 mm (2.0"), catering to miniature instruments and large industrial machinery.
Diameter Tolerance: As tight as ±0.00008" (±0.002 mm) for G5 grade.
Sphericity: As low as 0.00008" (0.002 mm) for the highest grades, ensuring smooth, quiet rolling motion.
Surface Roughness: Achieves a mirror-like finish with Ra ≤ 0.02 μm, minimizing friction and heat buildup.
Key Specifications & Parameters:
Housing Material: Chrome Steel, Stainless Steel (304/316) optional
Ball Material: Chrome Steel (Hardened & Ground)
Thread Types: Male right-hand thread (standard), Left-hand and female threads available
Thread Sizes: Comprehensive range from #10-32 UNF to M20x1.5 and beyond
Load Ratings: Dynamic load ratings up to 5,000 kgf; Static load ratings up to 8,000 kgf (Varies by size)
Standards: Compliant with ISO 9001, dimensions conform to common international specifications
Standard Specifications & Options:
Sizes: Available in standard deep groove ball bearing series (e.g., 60-series, 62-series, 63-series) with bore diameters from small precision sizes up to common industrial dimensions.
Precision Grades: Offered in standard ABEC 1 (P0) up to higher precision grades (ABEC 3/P6, ABEC 5/P5) for applications requiring exceptional running accuracy.
Clearance: Standard radial clearance (C0, CN) is available; other clearance groups can be specified.
Seals/Shields: Options include open, steel shields (ZZ), or rubber seals (RS, 2RS) for contamination protection, though the choice of seal must account for the potential for higher speeds.
Dimensions: Standard 608 size (8mm Bore, 22mm Outer Diameter, 7mm Width).
Load Ratings: Dynamic Load Rating (Cr): 12 kN | Static Load Rating (Cor): 6.65 kN.
Speed: Engineered for high RPMs, allowing for incredible acceleration and sustained coasting speed that steel bearings cannot match.
Weight: Up to 30% lighter than all-steel bearings, reducing rotational mass for quicker wheel response and a more agile board feel.
Durability: The combination of materials makes these bearings virtually impervious to rust, corrosion, and wear from dirt and moisture. They perform consistently in wet or dry conditions.
Maintenance: Requires less frequent cleaning and lubrication than standard bearings. The included high-speed lubricant is optimized for the ceramic-steel interface.
We supply standard grades from G5 to G100, with higher grades (e.g., G5, G10) offering the tightest tolerances for critical, high-speed applications. Sizes are available in a wide range, from miniature sizes of 0.5mm (0.0197") to larger diameters of 50.8mm (2.0") and beyond, depending on the material.
Materials & Key Properties:
• Chrome Steel : The industry standard, offering an excellent balance of hardness (60-67 HRC) and load capacity. Ideal for most general industrial and automotive applications.
• Stainless Steel (440C, 316): Provides superior corrosion resistance. Grade 440C is martensitic and can be hardened to 58-60 HRC, suitable for food, marine, and chemical environments. Grade 316 (austenitic) offers maximum corrosion resistance for highly aggressive media.
• Ceramic (ZrO2/Si3N4): These advanced bearing balls are lightweight (60% lighter than steel), electrically insulating, and highly resistant to wear, corrosion, and thermal expansion. They operate effectively in high-speed, high-temperature, and chemically hostile environments where metal fails.