High Speed 1/4″x5/8″x0.1...
R4 is specifically designed to seamlessly integrate with mechanical equipment manufactured according to imperial (inch) dimensions, and is suitable for markets that follow imperial standards.
Key Specifications:
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- Bore Diameter (d): 1/4 inch (0.2500")
- Outer Diameter (D): 0.625 inch (5/8")
- Width (B): 0.196 inch
- Dynamic & Static Load Ratings: Engineered for reliable performance in its size class. The R4 offers a balanced dynamic (Cr) and static (Cor) load capacity suitable for its intended applications.
- Speed Ratings: Capable of moderate to high rotational speeds, with specific limits depending on the lubrication condition and operational environment
- Internal Clearance: Typically supplied with a standard radial internal clearance (C0/CN) suitable for most common applications. Other clearance groups can be specified for unique thermal or fit requirements.
- Sealing/Shielding Options: Supplied as open, or with metal shields (ZZ) or rubber seals (2RS) to retain grease and exclude contaminants.
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 SR144TiZN 3.175×6.35...
SR144TiZN High Speed Dental Handpiece Bearing – Hybrid Ceramic, ABEC-7/P4 Precision. Stainless steel rings (440C) with Silicon Nitride (Si3N4) ceramic balls. Torlon/Phenolic cage for heat resistance, speeds up to 450,000 RPM. Precision replacement for KaVo, NSK, W&H, Sirona, Midwest, Bien-Air and major dental handpiece brands. Delivers smoother operation, longer turbine life, and quieter performance.
Key Specifications:
Model: SR144TiZN
Type: Miniature deep groove ball bearing (hybrid ceramic)
Inner Diameter (ID / d): 3.175 mm (1/8 inch)
Outer Diameter (OD / D): 6.35 mm (1/4 inch)
Width (B): 2.38 mm (3/32 inch) or 2.78 mm (7/64 inch) [variant-dependent]
Ring Material: AISI 440C stainless steel
Ball Material: Silicon Nitride (Si3N4) ceramic
Precision Grade: ABEC-7 / ISO P4
Maximum Rotational Speed: 350,000 – 500,000 RPM
Weight: Approx. 0.2–0.4 grams
RPM: 400,000
Ceramic balls are standard in our high-end series for their lightweight properties, which reduce centrifugal force, lower heat generation, and enable higher maximum speeds.
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High Temperature 609 2RS Full Cerami...
Dimensions: Bore: 9 mm, Outer Diameter: 24 mm, Width: 7 mm.
Full Material: Silicon Nitride (Si3N4) for all components.
Seals: PEEK cage
Operating Temperature: Withstands continuous operation from -60°C to over 800°C without degrading performance or losing pre-load.
Load Ratings: While excellent for its material, note that ceramic has lower load ratings than steel. Dynamic Load (Cr): ~1.8 kN, Static Load (Cor): ~0.9 kN. Its superiority lies in its environmental resistance, not pure load capacity.
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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.
High-Speed 400 000 rpm Low-Noise Sta...
Our premium dental handpiece bearings are engineered to meet the extreme demands of modern dentistry. Designed for high-speed operation, exceptional quietness, and extended service life.
Key Specifications:
Model: SR144
Dimensions: 3.175x6.35x2.38 mm
Balls: Silicon Nitride (Si3N4) Ceramic
Races: 440C Stainless Steel (hardened to 58-60 HRC)
Tolerance: ABEC-7 (ISO P2 equivalent)
Seals: Dual Rubber Shields (RS) or Metal Seals
RPM: 400,000
Ceramic balls are standard in our high-end series for their lightweight properties, which reduce centrifugal force, lower heat generation, and enable higher maximum speeds.
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HK2516 Drawn Cup Needle Roller Beari...
This premium Drawn Cup Needle Roller Bearing is particularly suitable for automotive transmissions, motorcycle engines, industrial gearboxes, agricultural machinery, and electric tools. The bearing can be press-fit into housing bores without additional machining, simplifying installation and reducing assembly costs. Special surface treatments for enhanced run-in performance and corrosion resistance.
Technical Specifications:
Dimensions: 25x30x16 mm (Bore x OD x Width)
Dynamic Load Rating: 22.5 kN
Static Load Rating: 31.0 kN
Material: Case-hardened low-carbon steel cup (62-66 HRC)
Needle Rollers: Through-hardened chrome steel (61-65 HRC)
Radial Clearance: Standard C0 group
Operating Temperature: -30°C to +120°C
Weight: 0.028 kg
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Hybrid Ceramic Deep Groove Ball Bear...
Hybrid Ceramic Ball Bearing – Zirconia Balls, Chrome Steel Races. Superior corrosion resistance, electrical insulation, up to 50% longer service life. Lower friction, reduced heat generation, higher speed capability. Ideal for electric motors, pumps, 3D printers, robotics, medical devices, and high-performance equipment where speed, durability, and reliability are critical.
Cage (Retainer) Materials Available:
PEEK – High-temperature applications up to 250°C; excellent chemical resistance
Nylon / PA66 – Standard lightweight option for most applications
PTFE – Maximum chemical resistance and low friction
Brass / Steel – High-load, high-temperature applications
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K Series Needle Roller Bearing K2328...
The K232814 needle roller bearing is a high-performance radial cage assembly designed for compact spaces and high-load environments. Engineered with a signature Yellow Polyamide Cage (PA66), this bearing offers exceptional stability, reduced friction, and superior heat resistance compared to standard steel cages.
Model: K232814 (Radial Needle Roller and Cage Assembly)
Inside Diameter (Fw): 23 mm
Outside Diameter (Ew): 28 mm
Width (Bc): 14 mm
Roller Material: High-Carbon Chromium Steel (GCr15)
Cage Material: Reinforced Polyamide PA66 (Yellow)
Precision Rating: P6 / ABEC-3 (Optional higher precision available)
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KA020XP0 2 x 2.5 x 0.25 inches Robot...
KA020XP0 Thin Section Bearing-Chrome steel construction, brass cage, open design, ABEC-1 precision. Ideal for robotics, aerospace actuators, medical imaging devices, rotary tables and precision automation where space and weight are critical constraints.
Key Specifications:
Model: KA020XP0
Bore Diameter (d): 2.000 inches / 50.800 mm
Outside Diameter (D): 2.500 inches / 63.500 mm
Width (B): 0.250 inches / 6.350 mm
Cross?section (constant): 0.25 × 0.25 inches
Number of rows: Single
Contact angle: 30°
Ring & Ball Material: Chrome bearing steel (AISI 52100 / GCr15)
Cage Material: Brass (standard formed ring “snap?over” type)
Seal Type: Open (no seals)
Precision Grade: ABEC?1 (P0) – higher grades available on request
Weight: 0.048kg
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KP000 10mm Bore Zinc Alloy Housing P...
KP000 Pillow Block Bearing – Pre-assembled, ready-to-mount bearing unit with two-bolt base. Zinc die-cast housing for corrosion resistance, steel insert bearing for durability. Self-aligning design compensates for shaft misalignment. Pre-lubricated, maintenance-free. Ideal for light-duty machinery, packaging equipment, food processing, conveying systems, and automation applications.
Model: KP000
Shaft Diameter (d): 10 mm
Bearing Type: Ball Bearing Insert (K000)
Housing Material: Zinc Die-Cast Alloy (ZDC)
Housing Series: KP Series
Mounting Type: Two-Bolt Base Pillow Block
Overall Length (a): 67 mm
Overall Height (H): 18 mm
Overall Width (w): 35 mm
Bolt Size: M6
Lubrication Pre-lubricated, Non-Relubricatable
Replacement Bearing: K000
Replacement Housing: P000
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Lightweight 627 7x22x7mm Plastic Min...
627 Plastic Deep Groove Ball Bearing – 7x22x7mm, POM (Acetal) Races & Glass Balls, PA66 Cage. No lubrication required – runs dry. Ultra-lightweight, non-magnetic, chemically resistant to water, seawater, weak acids, and mild alkalis. Self-lubricating, FDA-compatible food-grade option available. Cost-effective metal bearing replacement for food processing, medical devices, packaging machinery, chemical equipment, and RC models where corrosion, sanitation, and insulation matter most.
Model: 627 Plastic Deep Groove Ball Bearing
Inner Diameter (d): 7 mm / 0.2756 in
Outer Diameter (D): 22 mm / 0.8661 in
Width (B): 7 mm / 0.2756 in
Raceway Material: POM (Polyoxymethylene / Acetal)
Ball Material: Glass (precision ground)
Lubrication: Self-lubricating – runs dry
Corrosion Resistance: Excellent (resists water, seawater, weak acids, alkalis, solvents)
Electrical Properties: Non-magnetic, electrically insulating
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