_ZTELEC GROUP

Product Description(Our advantage)

1. Material: It is made of specialized cotton cloth impregnated phenolic resin, after dried, then heated, pressed and baked. Heat resistance level: E class.

2. Funcation: High mechanical strength properties, wear resistance, low water absorption rate.

3. Standard: JB 4037-85

4. Usage: Used as the radial thrust bearing and material with wear resistance.

Item	units	values
3520	3640	3641	380	382	364	355	356	3652
Density	g/cm 3	Less thanΦ25mm, ≥1.03. More thanΦ25mm, ≥1.1	Less thanΦ13mm, ≥1.65. More thanΦ13mm, ≥1.7	Less thanΦ13mm, ≥1.65. More thanΦ13mm, ≥1.7	≥1.25	—-	≥1.40	≥1.5	≥1.5	≥1.5
Bending strenth	MPa	≥50-60	≥17	—-	≥137	≥400	≥117.6	—-	≥150	＞80
Compressive strength	MPa	≥50-60	≥68	≥138	≥118	≥98	≥68.6	≥80	≥70	≥70
Shear strength	MPa	—-	—-	≥14.7	—-	—-	≥9.8	≥8.0	≥12	≥10
Water absorption rate	%	3-10	—-	0.4-1.0	≤1.2	—-	—-	—-	—-	—-
Vertical layer direction voltage resistance(in 90℃±2℃ transformer oil 5min)	KV	8.5~6	7~18	—-	—-	—-	7~18	—-	—-	—-
Parallel layer direction voltage resistance (in 90℃±2℃ transformer oil 5min)	KV	20~25	25	—-	—-	≥25 Normal state	—-	30	—-	25
Surface voltage resistance	KV	12	12	—-	—-	—-	—-	—-	—-	—-
Dielectric loss factor (50Hz,180℃±2℃)		≤0.03	≤0.03							≤0.03
Volume resistivity 180℃	MΩ.m	—-	—-	—-	—-	—-	≥10 5	—-	≥10 5	—-
Thermal stability	℃	120(24h)	—-	—-	105(24h)	—-	—-	—-	—-	—-

Electrical Materials

380 Bearing Phenolic Laminated Cloth Tube

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