Zhongtian Group

Chinese Manufacturer

Phenolic Cotton Cloth Tube(PFCC21A/24A)

1. Funcation: High mechanical strength properties, wear resistance, low water absorption rate. 2. Standard: JB 4037-85 3. Usage: Used as the radial thrust bearing and material with wear resistance.
Parameter
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) ---- ---- ---- ---- ----
Note: Due to continuous product improvement, the dimensions provided in this sample are for reference only. If necessary, our company can design and produce according to user requirements. Please contact the company in time.

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