687ceramic Bearing 7143.5

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687

Bore Diameter:7 mm

Outside Diameter:14 mm

Width:3.5 mm

Weight:0.0017g ( Zro2) 0.0009( sI3N4) 0.0004 (plastic) kg

The 687 bearing is a ball bearing with an inner diameter of 7 mm , an outer diameter of 14 mm, a width of 3.5 mm. It typically uses po-p6 grade precision tolerances and open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

7 mm

Outside Diameter:

14 mm

Thickness:

3.5 mm

Weight:

0.0017g ( Zro2) 0.0009( sI3N4) 0.0004 (plastic) KG

Specifications:

Structure:

ball bearing

Brand:

KMK

Precision Rating:

po-p6

Bearing Material:

stainless steel ,plastic , ceramic , chrome steel

Seals Type:

open

Transaction Information:

Payment term:

T/T Payment in advance

Delivery time:

according to quantity

Detailed description

687ceramic bearing have excellence performance as special electrical and magnetism resistance , could be used in awful environment andspecially condition.

Properties comparision of ceramic material:
Properties comparision of ceramic material:
Performance	Unit	Boron carbide	Aluminum oxide	Toughened Aluminum oxide	Zirconium oxide	Silicon nitride	Silicon carbide
Performance	Symbol	B4C	99Al2O3	ZTA-20%	ZrO2	Si3N4	SiC
Density	g/cm3	2.4~2.51	3.7~3.99	5.5	6	3.2	3.2
Hardness HV	Kg/mm	2700~3200	2300~2700	1470~1500	1300~1500	1700 ~2700	2350~2450
Flexural strength	MPa	350~400	300~400	700	1000~1500	900	450~800
Compressive strength	MPa	1800~2500	2800~3500	2000	2000	3500	2250~3000
Fracture toughness	Mpa·m-3/2	6	2~4	5~6	11	7	4~5
Weibull modulus	GPa		＞ 7	＞ 10	＞ 15	＞ 15	＞ 6
Modulus of elasticity	GPa		407	260	210	320	410
Poisson's ratio			0.2	0.23	0.3	0.26	0.16
Thermal expansion coefficient	×10-6/℃	4.5	6.5~8.6	9.4	10.5	3.2	4.3
Thermal shock resistance	ΔT℃		200	470	250	500	350
Electric resistance	Ω/cm2	0.3 ~ 0.8	＞1014~1016	＞1010	＞1010	＞ 1014	100 ~2

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How can you buy 687ceramic Bearing 7*14*3.5 on the Internet?
High quality 687 ( 0.0017g ( Zro2) 0.0009( sI3N4) 0.0004 (plastic) kg Mass, ID: 7 mm OD: 14 mm WD: 3.5 mm , po-p6 Accuracy Class , stainless steel ,plastic , ceramic , chrome steel Material ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. 687. then click the button " Send " The web site will make your purchasing information sent to the supplier's mailbox, who will come to contact you upon they get your information at the first time.

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687ceramic Bearing 7143.5

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