SI4 Spherical Plain Bearings

SI4 Spherical Plain Bearings
Part Number SI4T/K L5 -
d 4 d4 7.8
D M4*0.7 d5 9.5
W 8 L3 12
B 7 a°≈ -
C1 5.3 Dynamic Load Co(N) 3234
h 24 Static Load Cor(N) 4900
d2 14 Weight(Kg) 0.09
L 31    

SI4 Spherical Plain Bearing | SI4T / SI4K Stainless And Steel Types

The SI4 spherical plain bearing is a miniature precision rod end joint bearing for small automation and mechanical equipment. It features compact size, flexible multi-directional oscillating movement and excellent self-aligning performance. Available in SI4T and SI4K types with bearing steel and stainless steel material options, this bearing provides durable, high-precision motion solutions for light-load precision machinery.

SI4T vs SI4K | Model Differences

SI4T (Teflon Lined Type): Adopts built-in PTFE liner structure with self-lubricating property. It achieves ultra-low friction, no need for frequent oil filling, and supports dry friction operation. Ideal for low-speed light-load scenarios, clean environments and equipment requiring maintenance-free operation.

SI4K (Open Lubrication Type): Standard open grooved structure for easy grease injection and heat dissipation. It features high load stability and strong wear resistance after lubrication, suitable for continuous operation and general industrial light-load working conditions.

Material Introduction

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

Stainless Steel: Premium stainless steel material features excellent rustproof, waterproof and anti-corrosion performance. It adapts to humid, dusty and corrosive environments, perfectly suited for outdoor, food, medical and precision electronic equipment.

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