Product Details

Specifications

6308 skateboard ceramic ball bearings
1.Used in special condition
2.Less friction coefficient
3.PTFE cage
4.ISO:9001:2000

6308 skateboard ceramic ball bearings

Ceramic bearings have excellence performance as special electrical and magnetism resistance, wear and corrosion resistance, lubrication and maintenance free when working, high and low- temperature resistance etc. So they are suitable to be used in awful environment and special condition such corrosion ,magnetism and high temperature which are used in the transmission device of hot equipment .

6308 skateboard ceramic ball bearings specifications

Property	Steel	Ceramic	Difference
Density	7,6	3,2	- 58% lighter
Hardness	700	1550	+ 121% hardness
Elasticity	190	320	+ 68% more rigid
Expansion Coefficient Thermal	12,3	2,9	- 76%
Max Temp. °C	320	1000	+ 680°C
Surface roughness	0,02	0,005	+ 75% smoother
Life	-	10x	10x

Detailed introduction to 6308 skateboard ceramic ball bearings

ceramic bearing

Cost performance ceramic bearings are far superior to steel bearings, lifetime use of bearing life than now increased more than 3 times, can save a lot of downtime downtime, reduce scrap, reduce spare parts inventory bearings. Performance comparison with the bearing steel, bearing steel weight is 30% -40%, can reduce the centrifugal force generated by the increase in dynamic physical load and slip. Because of high wear resistance, speed is 1.3-1.5 times the bearing steel, high-speed rotation can reduce the channel due to surface damage. Elastic modulus 1.5 times higher than the bearing steel. Elastic force is small, can reduce the load generated by the high amount of deformation. Hardness is 1 times the bearing steel, can reduce the wear and tear. Compressive strength is 5-7 times the bearing steel. Bearing steel thermal expansion coefficient is less than 20%. Friction coefficient is less than 30% of bearing steel, can reduce friction and heat, reduce heat caused by bearing failure before peeling. Tensile, bending and metal equivalent.

6308 skateboard ceramic ball bearings Features:
1) Ceramic bearings have excellence performance as special electrical and magnetism resistance, wear and corrosion resistance, lubrication and maintenance free when working, high and low- temperature resistance etc. So they are suitable to be used in awful environment and special condition.
2) The rings and balls made of full ceramic material: ZrO2, SisN4 and Sic as a standar structure, the cage made of PTFE, GFRPA66-25, PEEK, PI, AISI US304, SUS316,Cu, etc.
3) Series available: single-row deep groove ceramic ball bearings, self-aligning ceramic ball bearings, single direction thrust ceramic ball bearings and angular contact ceramic bearings
4) Ceramic balls: all kinds of ceramic balls with the precision from G5 to G200,made of the material ZrO2, SiN4, SiC and Al2O3, etc.

6308 ceramic ball bearings Applications :
auto manufacture,driving equipments and engine industrial,chemistry industrial,medical industrial and food processing equipments industrial and so on.

ceramic bearing 6308 Ceramic Ball Bearing,This type of bearings have High degree of standardization, and the Structural alterations to the machine tool is small, Ease to maintenance, Particularly suitable for high speed running applications.ceramic bearing 6308, Its assembly high-speed spindle has High-speed, high stiffness, high power, long life and other advantages. bear high temperature: the Thermal expansion coefficient of the Ceramic ball is little, so the high temperature will not make expansion of the ball bearing in the high temperature environment, This greatly improves the bearing working temperature, the general bearing working temperature is about 160 degree, but the Ceramic Ball Bearing working temperature will higher than 220 degree. high speed: Ceramic ball has a self-lubricating oil properties, and the Friction coefficient is small, so the ceramic ball bearing have high running speed about 1.5 Multiple to general bearing. Insulation: Finally the insulation, ceramic ball bearings, the bearing's inner and outer rings can be insulated from each other, ceramic bearing 6308 this is the most importantly feature of this type bearings.

Catalog:

Ceramic Ball Bearings:
Open type (Metric series )
Open type (Inch series)
With rubber seals/steel shields type(Metric series )
With rubber seals/steel shields type(Inch series)
With snap ring/snap ring groove
Flange ball bearings(Metric series)
Flange ball bearings (¨Inch series)

skateboard ceramic ball bearings

Model No.	ID	OD	Width	Basic Load Rating		Max		Weight (KG)
	d (mm)	D (mm)	B (mm)	Dynamic	Static	Grease (r/min)	Oil (r/min)
	d (mm)	D (mm)	B (mm)	Cr(KN)	Cor(KN)	Grease (r/min)	Oil (r/min)
6308	40	90	23	40.8	24.0	7000	8500	0.639
6408	40	110	27	65.5	37.5	6300	8000	1.221
61809	45	58	7	6.40	5.60	9000	12000	0.030
61909	45	68	12	14.1	10.90	8500	11000	0.123
16009	45	75	10	15.6	12.2	8000	10000	0.155
6009	45	75	16	21.0	14.8	8000	10000	0.230
6209	45	85	19	31.5	20.5	7000	9000	0.416
6309	45	100	25	52.8	31.8	6300	7500	0.837
6409	45	120	29	77.5	45.5	5600	7000	1.520
61810	50	65	7	6.6	6.1	8500	10000	0.043