618/4-Z

The 618/4-Z deep groove ball bearing is a super-miniature precision bearing originally produced in China. Its core specifications are an inner diameter of 4mm, an outer diameter of 9mm, and a width of 2.5mm. It features a single-sided dust-proof cover (Z-level protection) design. It is made of 440C stainless steel or GCr15 high-carbon chromium bearing steel. It is pre-filled with lithium-based lubricating grease upon leaving the factory. It has a basic rated static load of approximately 0.11kN, a basic rated dynamic load of 0.29kN, and a grease lubrication rated rotational speed of 80000r/min. It mainly offers core advantages such as compact space, high precision, high rotational speed, dust-proof protection, and stable operation under light load. It is suitable for industries with strict requirements for installation space, operation precision, and dust protection, such as precision instruments, medical devices, consumer electronics, micro motors, and automation equipment. It has sufficient inventory for 48-hour delivery. It is compatible with ISO standards and can be interchanged with the same model international brands. It also offers two options: industrial packaging and commercial independent packaging.

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Product Introduction

618/4-Z Deep Groove Ball Bearing Specification：
Stock Status: Usually dispatched within 48 hours
Inner Diameter: 4mm
Outer Diameter: 9mm
Width: 2.5mm
Material: 440C Stainless Steel
Lubrication: Grease, with supplementary lubrication support
Static Load: 0.11kN
Dynamic Load: 0.29kN
Speed Limit: 80,000 r/min
Origin Country: China
Current Stock: 198 pieces
This bearing can be used in the following industries:

precision instruments, medical devices, consumer electronics, micro motors, automation equipment, aerospace micro components, watch manufacturing, small robots, 3D printing equipment, industrial micro transmission equipment, etc. It is suitable for operating scenarios with limited space, low-load, high-precision requirements, and those needing basic dust-proof protection.

We offer two packaging options:
A: Industrial packaging + export cartons + pallets / wooden crates
B: Commercial individual packaging - rust-proof bags + cardboard boxes (white or the color specified by the customer) + export cartons + pallets / wooden crates

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The numerous advantages of cooperating with Taicheng Bearing Company:
You can purchase goods at discounted prices.
Delivery is prompt. Quality is guaranteed.
Acceptance of small orders is possible.

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