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69 Series
Home Deep Groove Ball Bearings 69 Series

695-2RS Sealed Miniature Ball Bearing For Medical & Laboratory Equipment | 5×13×4 mm

695-2RS Sealed Miniature Ball Bearing For Medical & Laboratory Equipment | 5×13×4 mm

Engineered for compact rotary assemblies requiring maintenance-free operation and enhanced protection, the 695-2RS is a precision miniature ball bearing featuring a 5 mm bore, 13 mm outer diameter, and a 4 mm width. This model belongs to the 6900 series, renowned for its lightweight design and suitability for high-speed applications. The integrated dual rubber seals (2RS) provide an effective barrier against fine dust and moisture while retaining a precisely measured charge of high-speed lithium-based grease, ensuring consistent performance in space-constrained environments.

695-2RS Deep Groove Ball Bearing 5×13×4 mm | 6900 Miniature Series | Dual Rubber Sealed

Manufactured to strict tolerance standards, this sealed bearing delivers smooth, quiet operation by minimizing frictional heat even during prolonged use. The internal geometry is optimized to handle light radial loads and moderate axial forces in both directions, making it a reliable "fit-and-forget" component for precision instruments and small electric drives where re-lubrication is impractical.

 

695-2RS Sealed Miniature Ball Bearing For Medical & Laboratory Equipment | 5×13×4 mm

Comprehensive Applications

Ideal for compact mechanical and electronic assemblies where sealed construction and low running torque are critical:

Electric Motors & Small Appliances
  • Miniature DC electric motors for handheld fans
  • Cordless screwdriver and precision tool gearboxes
  • Computer cooling fan spindles
  • Office automation equipment (photocopier rollers, scanner rails)
Precision Instruments & Hobby
  • High-speed remote control (RC) helicopter main shafts and tail rotors
  • Miniature quadcopter drone motor canisters
  • 3D printer extruder gears and filament drive wheels
  • Fishing reel rotor mechanisms and line rollers
Automotive & Auxiliary Systems
  • Automotive HVAC blend door actuators
  • Turbocharger wastegate linkages (light-duty)
  • Electric power steering auxiliary mechanisms
  • Throttle position sensor shafts
Medical & Laboratory Equipment
  • Centrifuge rotor guides for compact lab devices
  • Dental drill handpiece components
  • Peristaltic pump idler rollers
  • Micro-screw linear actuators

Key Performance Features

01. Enhanced Contamination Defense

Equipped with non-contact rubber seals (NBR material), the 695-2RS effectively protects its internal precision surfaces. The seals prevent the ingress of workshop dust, filament debris, and incidental moisture without introducing significant drag, ensuring the bearing remains smooth-rotating even in less-than-clean operating environments like workshops or outdoor drone fields.

02. Optimized for Light-Duty Loads

Despite its compact dimensions, the 5x13x4 mm configuration, constructed from durable GCr15 (SAE 52100) chrome steel, offers a robust load capacity for its size. It provides stable support for small-diameter shafts, ensuring accurate rotation in sensitive equipment without adding unnecessary weight or bulk.

03. High-Speed Capability

The 695-2RS is designed with a balanced cage and precision-matched balls to facilitate high rotational speeds. It maintains a low vibration amplitude, which is essential for stabilizing the output of high-RPM devices such as miniature spindles and hobby motors, thereby extending the lifespan of the surrounding components.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6900 Series - Miniature
Basic Designation 695
Suffix 2RS (Double Rubber Contact Seals)
Bore Diameter (d) 5 mm
Outer Diameter (D) 13 mm
Width (B) 4 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Pressed Steel (ribbon type) or Polyamide
Dynamic Load Rating (Cʳ) 1.08 kN
Static Load Rating (C₀ʳ) 0.43 kN
Limiting Speed (Grease) 40,000 r/min
Limiting Speed (Oil) --
Weight (approx.) 0.0045 kg (4.5 g)

Interchange Part Numbers

Common industry equivalents for cross-reference purposes:

  • SKF: 695-2RSH
  • NSK: 695DDU
  • FAG: 695-2RS
  • NTN: 695LLU
  • KOYO: 695-2RS
  • NMB: L-1350-2RS

Design & Configuration

The standard 695-2RS configuration features dual rubber contact seals, offering a straightforward solution for applications where ongoing maintenance is difficult. Its compact 5x13x4 mm footprint allows for direct replacement in existing OEM designs or easy integration into new compact prototypes.

For environments with exposure to coolants or high humidity, stainless steel variants (S695-2RS) are available to resist corrosion. If the application is exceptionally clean and demands the absolute lowest possible frictional torque, the open version (695) or the shielded version (695-ZZ) may be considered for specialized use cases.

"For engineers and hobbyists building compact machinery where space is at a premium but reliability cannot be compromised, the Welink 695-2RS delivers consistent, low-friction performance in a tiny, durable package."

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