Full Ceramic Deep Groove Ball Bearing – Non?magnetic, electrically insulating, corrosion resistant, operable up to 1200°C. Self?lubricating, runs dry without oil or grease. Ideal for semiconductor, aerospace, medical, chemical processing, vacuum systems, and high?temperature furnace applications where steel bearings inevitably fail.
We offer Si3N4 full ceramic deep groove ball bearings in a wide range of standard sizes, including miniature series (down to 2mm ID), metric and inch dimensions, and large?diameter configurations. Custom retainer materials (PEEK, PTFE, PA66, full complement without cage) are available.
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.
The 6205 hybrid ceramic deep groove ball bearing is lighter than steel balls, electrically insulating, and has a lifespan that is 3 to 5 times longer. It can withstand high temperatures and reduce friction.
Standard Specifications & Options:
Model: 6205 (Hybrid Ceramic)
Bore Diameter (d): 25 mm
Outer Diameter (D): 52 mm
Width (B): 15 mm
Ring Material: Chrome Steel
Ball Material: Black Silicon Nitride (Si3N4) – Ceramic
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.
Nail Charm Miniature Bearing – Ideal for nail charms, phone cases, scrapbooking, and kinetic jewelry crafts. Adds eye-catching movement to any project.
Dimensions (OD x ID x Thickness): 4 x 5 x 2.5 mm
Material: High-grade bearing steel / Copper alloy
Rotation Type: 360° continuous, low-friction
Structure: Deep groove ball bearing with steel balls and steel cage
Precision Grade: P0 (standard industrial grade)
Sealing Type: Seal / Shield (dust and humidity protection)
Color: Gold (most common), Silver (available on request)
EWC1008 One-Way Needle Roller Bearing – Ideal for fishing reels, overrunning clutches, indexing mechanisms, and anti-reverse applications. Smooth operation, high torque capacity, compact design.
Technical Specifications & Design Features
Model: EWC1008
Type: One-Way Needle Roller Bearing / Drawn Cup Roller Clutch
Inner Diameter (Fw): 10 mm / 0.394 in
Outer Diameter (D1): 16 mm / 0.630 in
Width (B): 8 mm / 0.315 in
Number of Needle Rollers: 11 needles
Roller Configuration: Single row, full complement (no cage between rollers)
Outer Ring Shape: Hexagonal (6-sided) for wrench installation
Material: Stainless steel
Retainer / Spring Material: Nylon / Plastic reed (self-lubricating)
F686ZZ Flange Ball Bearing - The integrated flange simplifies housing design and eliminates axial movement. Pre-lubricated, low noise, low friction. The ideal drop-in replacement for 6mm shafts in 3D printers, RC models, electric motors, robotics, and small machinery.
Key Dimensions:
Model: F686ZZ
Bore Diameter (d): 6 mm / 0.236 in
Outer Diameter (D): 13 mm / 0.512 in
Width (B): 5 mm / 0.197 in
Flange Diameter (D1): 15 mm / 0.591 in
Flange Thickness (C1): 1.1 mm
Radial Internal Clearance: CN (C0) Standard
Weight: approx. 2.2 – 3 g