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R Series
Home Deep Groove Ball Bearings R Series

R14-ZZ Precision Shielded Ball Bearing for Electric Motors & Automation | 7/8" x 1-7/8" x 3/8"

R14-ZZ Precision Shielded Ball Bearing for Electric Motors & Automation | 7/8" x 1-7/8" x 3/8"

Engineered to bridge the gap between compact dimensions and substantial load capacities, the R14-ZZ is a highly versatile inch-series deep groove ball bearing. Featuring twin pressed-steel shields (ZZ), this model efficiently deflects dirt and metallic debris while keeping the internal factory lubricant securely in place. Because these metal shields operate without making physical contact with the inner ring, the R14-ZZ minimizes mechanical drag and startup resistance, making it an optimal 7/8-inch bore solution for electric motors, gearboxes, and high-speed automated machinery.

R14-ZZ Deep Groove Ball Bearing 22.225x47.625x9.525 mm | Low-Friction Design 

Manufactured in strict accordance with ABEC precision standards, this imperial bearing provides excellent radial stability alongside the ability to manage moderate axial loads in both directions. The non-contact metallic shielding serves as a robust frontline defense against larger particulates, protecting the finely honed internal raceways without the thermal buildup typically associated with rubber contact seals. This thermally efficient architecture allows the R14-ZZ to consistently sustain high RPMs, ensuring reliable, maintenance-free operation across diverse industrial and commercial applications.

R14-ZZ Precision Shielded Ball Bearing for Electric Motors & Automation | 7/8" x 1-7/8" x 3/8"

Comprehensive Applications

Optimized for rotational efficiency and mid-sized mechanical assemblies:

Electric Motors & Power Generation
  • Mid-sized AC/DC electric motor stators and rotors
  • Industrial alternators and commercial power generators
  • High-velocity cooling blowers and HVAC ventilation fans
Commercial & Recreational Equipment
  • Heavy-duty power tools and landscaping machinery
  • Go-kart drivetrains and ATV wheel assemblies
  • Commercial gym equipment and treadmills
Industrial Automation & Manufacturing
  • Conveyor belt rollers and material handling guides
  • Automated packaging and sorting machinery
  • Textile manufacturing equipment and commercial printing presses
Power Transmission & Drive Systems
  • Precision gearboxes and speed reducers
  • Pulley mechanisms and mechanical drive shafts
  • Centrifugal pumps and fluid management systems

Key Performance Features

01. Twin Metal Shields (ZZ) for High RPM

The integration of double non-contact steel shields ensures excellent particulate defense without compromising rotational speed. By eliminating the mechanical friction caused by rubber seals, this design lowers operating temperatures, extends lubricant life, and maximizes the overall energy efficiency of the motor or machine.

02. Standardized Imperial Architecture

With a precise 7/8" (22.225 mm) bore and 1-7/8" (47.625 mm) outer diameter, this bearing serves as a seamless, drop-in replacement for legacy and contemporary inch-based machinery. Its versatile deep-groove geometry provides a highly stable foundation for rotating shafts under varying load conditions.

03. Industrial-Grade Chrome Steel (GCr15)

Constructed from high-purity, vacuum-degassed GCr15 chrome steel, the rolling elements and rings undergo advanced heat treatments. This rigorous manufacturing process guarantees exceptional Rockwell hardness, minimizing metal fatigue and ensuring a prolonged, quiet service life even under continuous dynamic operation.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series Inch Series (R Series)
Basic Designation R14
Suffix ZZ (Double Steel Shields)
Bore Diameter (d) 7/8" (22.225 mm)
Outer Diameter (D) 1-7/8" (47.625 mm)
Width (B) 3/8" (9.525 mm)
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Shield Material Pressed Steel
Dynamic Load Rating (Cʳ) 7.65 kN
Static Load Rating (C₀ʳ) 4.50 kN
Limiting Speed (Grease) 13,000 r/min
Limiting Speed (Oil) 15,000 r/min
Weight (approx.) 0.075 kg (75 g)

Interchange Part Numbers

Directly replaces the following equivalent manufacturer parts:

  • SKF: R14-2Z
  • NSK: R14ZZ
  • Timken / Fafnir: 38KDD
  • KOYO: R14ZZ
  • NTN: R14ZZ
  • NMB: R14ZZ

Design & Configuration

Out of the box, the standard R14-ZZ is packed with a premium, low-noise multi-purpose grease suited for most industrial environments. Should your specific engineering project involve elevated operating temperatures, Welink Bearing can supply this bearing with C3 radial internal clearance to safely manage thermal expansion. For environments subject to heavy dust or direct moisture, we strongly recommend inquiring about our contact-sealed R14-2RS variant for maximum ingress protection.

"Delivering a perfect synergy of imperial dimensional standards and frictionless rotation, the R14-ZZ drives efficiency in modern power transmission and industrial automation."

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Engineered to bridge the gap between compact dimensions and substantial load capacities, the R14-ZZ is a highly versatile inch-series deep groove ball bearing. Featuring twin pressed-steel shields (ZZ), this model efficiently deflects dirt and metallic debris while keeping the internal factory lubricant securely in place. Because these metal shields operate without making physical contact with the inner ring, the R14-ZZ minimizes mechanical drag and startup resistance, making it an optimal 7/8-inch bore solution for electric motors, gearboxes, and high-speed automated machinery.

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Details

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