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Needle Roller & Cage Assemblies (K Series)
Home Needle Roller Bearings Needle Roller & Cage Assemblies (K Series)

K588TN Needle Roller and Cage Assembly | Lightweight & High-Speed Performance | 5x8x8 mm

K588TN Needle Roller and Cage Assembly | Lightweight & High-Speed Performance | 5x8x8 mm

The K588TN is a high-precision needle roller and cage assembly designed for applications where the shaft and housing bore serve as the actual raceways. By eliminating the inner and outer rings, this "K series" assembly offers the smallest possible radial cross-section, allowing for maximum power density in extremely tight envelopes. The "TN" designation indicates a specialized Polyamide 66 (Nylon) cage, which provides superior damping, reduced weight, and better emergency running properties compared to traditional steel cages. This assembly is the go-to choice for engineers looking to minimize centrifugal forces and maximize rotational speeds in modern mechanical designs.

K588TN High-Performance Polyamide Cage Bearing 5mm × 8mm × 8mm | Optimized Radial Support | Maximum Load Capacity in Minimal Space

Engineered for high-frequency oscillation and rapid acceleration, the K588TN utilizes high-carbon chrome steel needle rollers that are sorted into incredibly tight diameter tolerances. The polyamide cage construction ensures precise roller guidance and optimal lubricant retention, significantly reducing internal friction and heat generation. Whether integrated into a high-performance transmission or a compact power tool, this needle roller assembly guarantees smooth, reliable motion under heavy radial loads while maintaining an exceptionally low profile.

K588TN Needle Roller and Cage Assembly | Lightweight & High-Speed Performance | 5x8x8 mm

Comprehensive Applications

Ideally suited for automotive and industrial designers requiring high load-carrying capacity without the bulk of traditional ball bearings:

Automotive & Drivetrain
  • Manual and Automatic Transmissions
  • Engine Valve Train Components
  • Connecting Rod Small-End Bearings
  • Steering Gear Assemblies
Power Tools & Small Engines
  • Pneumatic Grinders and Drills
  • Chainsaw and Lawn Equipment Crankshafts
  • Impact Wrench Internal Rotors
  • Electric Brushless Tool Gears
Industrial Machinery
  • Textile Spinning Spindles
  • Printing Press Cylinder Supports
  • Robotic Arm Joint Pivots
  • Hydraulic Pump Piston Guides

Key Performance Features

01. Advanced Polyamide 66 (TN) Cage

The glass-fiber reinforced polyamide cage offers a unique combination of strength and elasticity. Unlike steel, the TN cage is naturally self-lubricating to a degree and excels in applications with high accelerations or where vibration damping is necessary. It also operates with significantly lower noise levels, making it perfect for high-end consumer electronics and automotive interiors.

02. Minimalist "Ringless" Configuration

By utilizing the mounting hardware as the raceway, the K588TN allows for larger shaft diameters and stiffer assemblies without increasing the total housing size. This design optimizes the machine’s structural integrity while reducing the total number of components and overall weight of the system.

03. Precision-Matched Needle Rollers

Every roller within the K588TN assembly is manufactured from high-grade GCr15 steel and precision-ground to ensure uniform load distribution. This prevents "edge loading" and premature fatigue, allowing the assembly to handle significant radial forces while maintaining an incredibly long service life in harsh operational conditions.

Technical Specifications

Bearing Type Needle Roller and Cage Assembly
ISO Dimension Series K Series (Radial)
Basic Designation K588TN (5x8x8mm)
Suffix ZZ (Double Metal Shields)
Bore Diameter (d) 5 mm
Outer Diameter (D) 8 mm
Width (B) 8 mm
Cage Material Polyamide 66 (TN / TVP)
Roller Material GCr15 Chrome Steel (SAE 52100)
Precision Class G2 Roller Grade / ISO Standard
Dynamic Load Rating (Cʳ) Approx. 2,950 N
Static Load Rating (C₀ʳ) Approx. 2,550 N
Limiting Speed (Grease) 32,000 RPM
Limiting Speed (Oil) 48,000 RPM
Weight (approx.) 0.95 grams

Interchange Part Numbers

Cross-reference equivalent manufacturer part numbers for global sourcing:

  • SKF: K 5x8x8 TN
  • NMB: LF-850ZZ
  • NSK: F-58
  • NTN: F-58
  • FAG: K5X8X8-TN
  • KOYO: F-58

Design & Configuration

With over 15 years of B2B manufacturing excellence, Welink Bearing specializes in providing high-performance needle roller solutions for demanding industrial environments. The K588TN represents our commitment to precision-engineered lightweight components. For high-volume manufacturing partners, we offer custom modifications including specialized roller sorting for matched sets, high-temperature-resistant polymer cages, and custom lubrication options designed to meet the rigorous standards of the automotive and aerospace sectors.

"Maximize your power-to-weight ratio with the K588TN needle roller cage—where compact design meets heavy-duty performance."

Related Products

Precision K588TN replacement part compatible with SKF and INA needle cages for high-speed industrial spindles
K588TN Needle Roller and Cage Assembly | Lightweight & High-Speed Performance | 5x8x8 mm

The K588TN is a high-precision needle roller and cage assembly designed for applications where the shaft and housing bore serve as the actual raceways. By eliminating the inner and outer rings, this "K series" assembly offers the smallest possible radial cross-section, allowing for maximum power density in extremely tight envelopes. The "TN" designation indicates a specialized Polyamide 66 (Nylon) cage, which provides superior damping, reduced weight, and better emergency running properties compared to traditional steel cages. This assembly is the go-to choice for engineers looking to minimize centrifugal forces and maximize rotational speeds in modern mechanical designs.

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