638 Open Type Miniature Ball Bearing

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638

Bore Diameter:8 mm

Outside Diameter:28 mm

Width:9 mm

Min. Order:1 Piece

The 638 bearing is a Deep Groove Ball Bearings with an inner diameter of 8 mm , an outer diameter of 28 mm, a width of 9 mm. It typically uses Standard grade precision tolerances and features a Steel cage, Chrome Steel (Gcr15) rings. Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Application: Servo & Miniature Motors, Turbo-Machinery Pumps, Scroll Compressors,Surgical Devices, Medical Handpieces & Instruments, Pulmonary Assist Devices, Aircraft & Spaceflight, Flow Meters, Fuel Controls, Gimbals, Slip Rings.

Dimensions:

Inside Diameter:

8 mm

Outside Diameter:

28 mm

Thickness:

9 mm

Specifications:

HS Code:

8482102000

Structure:

Ball Bearing

Number of Rows:

Single

Demensions:

8x28x9

Brand:

Neutral Product

Precision Rating:

Standard

Bearing Material:

Chrome Steel (Gcr15)

Cage material:

Steel

Seals Type:

Open

Roller Material:

Chrome Steel (Gcr15)

System of Measurement:

Metric

Rolling Element:

Ball

Closure Type:

Open

Transaction Information:

Transport Package:

Standard Export Package

Shipping Ways:

by Sea or Air

Country of Origin:

China

Stock:

100 Piece

Port:

Tianjin, Shanghai, Shenzhen, Guangzhou or Qingdao

Payment term:

by T/T in advance

Delivery time:

2-3 days for stock, 25-30 days for bulk production

Detailed description

638 Miniature Ball Bearing, Open Type, Single Row, Metric Size, High Speed & Low Noise.

Size: 8x28x9mm

Inner Diameter (d): 8 mm

Outer Diameter (D): 28 mm

Width (B): 9 mm

Bearing Material: GCR15 Bearing Steel

Closures: Open both sides

HS Code: 8482102000

Deep Groove Ball Bearing
Part No.	Dimensions (mm)			Weight	Interchange Part No.
Part No.	d	D	B	Lbs	Nachi
638	8	28	9	0.05	638

Miniature bearings, also known as small bearings or micro bearings, are designed to operate in applications that require compactness, low friction, and high rotational precision. They are characterised by their small size, often with a bore diameter of less than 30mm, and precise construction. Miniature bearings can be used at high speeds and withstand moderate loads.

Applications: Servo & Miniature Motors, Turbo-Machinery Pumps, Scroll Compressors,Surgical Devices, Medical Handpieces & Instruments, Pulmonary Assist Devices, Aircraft & Spaceflight, Flow Meters, Fuel Controls, Gimbals, Slip Rings.

All the bearings we are offering are direct factory price, fast delivery, perfect quality. For more bearings, please feel free to mail us at [email protected] or contact us by Wechat or Whatsapp at +8618062246726.

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638 Open Type Miniature Ball Bearing

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