681XZZ ABEC 9 1.5*4*2 mm Fingerboard...
Upgrade your fingerboard wheels with professional-grade bearings for smoother grinds, faster rolls, and consistent performance.
Dimensions:
Inner diameter (d): 1.5 mm
Outer diameter (D): 4 mm
Width (B): 2 mm
Material: High-grade GCr15 chrome steel – fully hardened (HRC 60–65) for wear resistance and dimensional stability
Rolling Elements: Precision-grade chrome steel balls (Grade G10 or better) – spherical accuracy ensures smooth, low-friction rotation
Cage (Retainer): Miniature stamped steel or nylon retainer – maintains consistent ball spacing without adding excessive drag
Shields: Double metal shields (ZZ design) – non-removable shields prevent dust, lint, and debris from entering the bearing while retaining lubricant
Precision Grade: ABEC-3 to ABEC-9 equivalent – sufficient for the high rotational speeds and light loads of fingerboarding
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688 8x16x4 mm Micro Hybrid Ceramic D...
688 Racing Bearing – 8x16x5mm, High-Speed Deep Groove Ball Bearing. Precision chrome steel construction, factory pre-lubricated. An ideal upgrade for RC cars, RC helicopters, RC planes, skateboards, in-line skates, and small motors.
Model: 688 (688ZZ / 688-2RS variants available)
Inner Diameter (d): 8 mm / 0.315 in
Outer Diameter (D): 16 mm / 0.630 in
Width (B): 5 mm / 0.197 in
Type: Deep groove miniature ball bearing
Precision Grade: ABEC-1 through ABEC-9 available
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DIY Nail Art Charm High Speed 4x5x2....
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)
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High Speed Miniature Deep Groove Bal...
Miniature Deep Groove Ball Bearings for Nail Machines – Precision P5 grade, ultra-low noise ≤20dB, speeds up to 50,000 RPM. Low vibration, low temperature rise, smooth rotation. Pre-lubricated and ready to install. Perfect for electric nail files, nail printers, manicure drills, and beauty handpieces where quiet, comfortable, and reliable performance matters most.
Dimensions: 3×8×4mm, 3×10×4mm, 6×10×3mm, 8×14×4mm.
Material: Chrome Steel / Stainless Steel
Grease Speed Limit: 40,000+ RPM
Seal Type: ZZ (metal shield)
Precision Grade: P5
Noise Level: ≤20 dB
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High-Speed 2×5×2.5 mm MR52 ZZ RS Mic...
The MR52 is a high-performance miniature ball bearing, expertly engineered for applications where space is limited but performance is critical.
Key Specifications:
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- Bore Diameter (d): 2 mm
- Outer Diameter (D): 5 mm
- Width (B): 1.5 mm
- Load Ratings: Despite its miniature size, the MR52 is engineered to handle meaningful loads for its scale. Its dynamic (Cr) and static (Cor) load ratings make it suitable for a range of light-duty, high-precision applications. Exact values are detailed in our technical documentation.
- Speed Ratings: Capable of very high rotational speeds, which are essential for applications like small DC motors and high-speed spindles in dental or laboratory tools.
MR105 5x10x4mm Miniature Deep Groove...
MR105 Miniature Deep Groove Ball Bearing – 5x10x4mm, Chrome Steel, High Precision. Available in open, double-shielded (ZZ) and double-sealed (2RS) configurations. Low noise, low friction, high speed. Ideal for RC cars, helicopters and aircraft, 3D printers, motors, fans, medical devices, robotics, and precision instruments.
Model: MR105 / MR105ZZ / MR105-2RS
Inner Diameter (d): 5 mm / 0.1969 in
Outer Diameter (D): 10 mm / 0.3937 in
Width (B): 3 mm, 4 mm
Number of Balls: 7 – 8
Mass (approx.): 0.001 – 0.00129 kg (1 – 1.29 g)
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