SI5 Spherical Plain Bearings

SI5 Spherical Plain Bearings
Part Number SI5T/K L5 4
d 5 d4 8.5
D M5*0.8 d5 12
W 9 dk 11.11
B 8 L3 8
C1 6 a°≈ 13
h 27 Dynamic Load Co(N) 3250
d2 18 Static Load Cor(N) 5700
L 36 Weight(Kg) 0.16

SI5 Spherical Plain Bearing | SI5T / SI5K Stainless And Steel Types

The SI5 spherical plain bearing is a compact precision rod end joint bearing widely used in small automation and light-duty mechanical systems. It delivers flexible multi-directional oscillation, reliable self-aligning performance and stable low-friction movement. Offered in SI5T and SI5K models with bearing steel and stainless steel options, this bearing provides cost-effective, high-precision motion solutions for light-load industrial and precision equipment.

SI5T vs SI5K | Model Differences

SI5T (Teflon Lined Type): Equipped with a built-in PTFE liner with excellent self-lubricating properties. It features ultra-low friction, supports dry operation and requires no frequent grease maintenance. Perfect for clean, dry working environments and maintenance-free precision machinery applications.

SI5K (Open Lubrication Type): Standard open grooved structure allows convenient grease injection and efficient heat dissipation. With good wear resistance and stable load performance after lubrication, it is suitable for continuous cyclic operation and general light-load industrial scenarios.

Material Introduction

Bearing Steel: Made of high-quality high-carbon chromium bearing steel with professional heat treatment. It boasts high surface hardness, outstanding wear resistance and stable load capacity, ensuring long service life and rigid performance for conventional indoor industrial equipment.

Stainless Steel: Premium stainless steel material offers superior rustproof, waterproof and anti-corrosion properties. It stably adapts to humid, dusty and corrosive environments, ideal for outdoor, medical, food-grade and precision electronic equipment.

Product Features

Compact miniature structure for narrow installation spaces. Reliable self-aligning performance to compensate for mounting errors. Flexible multi-angle swing movement with low friction. Dual model and material options fit diverse working conditions. High precision, stable operation and easy installation and replacement.

Application Scenarios

SI5 spherical plain bearings are commonly applied in miniature automation devices, small robotic arms, precision electronic equipment, textile machinery, medical devices and light-duty mechanical transmission mechanisms. SI5T is suitable for clean dry maintenance-free scenarios; SI5K fits conventional lubricated working environments, and stainless steel versions adapt to humid and corrosive working conditions.

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