Top Bearings is a professional leader China Insert PP UPE PEEK PTFE Anti Bump Pillow Block Ball Bearing manufacturers with high quality and reasonable price. Welcome to contact us.
Top Bearings is a professional leader China Insert PP UPE PEEK PTFE Anti Bump Pillow Block Ball Bearing manufacturers with high quality and reasonable price. Welcome to contact us.
Aim at working in different environment, the ball bearing for units made with POM, HDPE, PP, UPE, PTFE or PEEK material, housing of the bearing units generally made with PBT material.The plastic ball bearing units specially have the performance of corrosion and wear resistance, reduce vibration and anti-bump, are free from the maintenance and so forth. Such is the most ideal solution of many difficult problem which have puzzled the industry field for hundreds years.
Material: |
POM, HDPE, PP, UPE, PTFE, PEEK, PBT |
Basic Properties: |
Specially Have The Performance Of Corrosion And Wear Resistance |
Maintenance: |
Free |
Weight: |
Light |
Material Of Housing Of The Bearing Units: |
PBT Material |
Material Of The Ball Bearing For Units: |
POM, HDPE, PP, UPE, PTFE Or PEEK Material |
High Light: |
plastic ball bearings, pillow block bearings |
Technical data | unit | GCr15 | 9Cr18 | Si3N4 | AL203 | ZrO2 |
Density | g/cm³ | 7.8 | 7.9 | 3.2 | 3.95 | 6 |
a Coefficient of expansion | 10^-6/℃ | 11 | 17 | 3.2 | 9.1 | 10.5 |
E modulus of elasticity | Gpa | 208 | 200 | 320 | 380 | 210 |
μ Poisson ratio | 0.3 | 0.3 | 0.26 | 0.27 | 0.3 | |
HV Hardness | 800 | 700 | 1700 | 1800 | 1300 | |
δ Flexural strength | Mpa | 2400 | 2600 | 900 | 220 | 1000 |
δ Compressive Strength | MPa | 2000 | 1500 | 3500 | ||
Kc Impact strength | Nm/cm² | 20 | 25 | 7 | 3.5 | 11 |
λ Thermal conductivity | W/mk | 30-40 | 15 | 3.5 | 25 | 2.5 |
Ω Specific resistivity | mm²/m | 1 | 0.75 | 10^18 | 10^8 | 10^5 |
Specific heat | J/KgK | 450 | 450 | 800 | 880 | 400 |
Application temperature | ℃ | 120 | 150 | 1000 | 1850 | 800 |
Anti-corrossion | No | poor | Good | Good | Good | |
Cycle stress | 10*10^6 | 10*10^6 | 50*10^6 | 30*10^6 | 50*10^6 | |
Destroy model | peel | peel | peel | fracture | peel/fracture | |
Anti-magnetism | Yes | Yes | No | No | No | |
Dimension stability | bad | poor | Good | Good | Good | |
Insulate properties | No insulation | No insulation | Good | Good | Good |
Material | HDPE | PP | POM | PA66 | PVDF | PPS | PTFE | PEEK |
Long-time working temp. | 90 | 100 | 110 | 100 | 150 | 230 | 260 | 280 |
Density | g/cm3 | 0.91 | 1.42 | 1.14 | 1.77 | 1.35 | 2.18 | 1.32 |
Ball indentation hardness | 50 | 80 | 170 | 170 | 80 | 190 | 30 | |
Tensile stress | 25 | 30 | 70 | 80 | 50 | 75 | 25 | 95 |
Sliding friction coefficient | 0.29 | 0.3 | 0.34 | 0.35-0.42 | 0.3 | 0.08-0.1 | 0.3-0.38 | |
Melted temperature | 130 | 165 | 175 | 260 | 172 | 280 | 327 | 343 |
Short-time highest application temperature | 90 | 140 | 150 | 170 | 150 | 260 | 260 | 300 |
Coet of Inear expansion (10^-5/K) | 13-15 | 17 | 10 | 8 | 13 | 5 | 12 | 5 |
Dielectric constant at 1 Mhz(10^6HZ) | 2.4 | 2.25 | 3.7 | 3.6-5 | 8 | 2.1 | 3.2-3.3 | |
Volume resisrivity (Ω·cm) | >10^15 | >10^24 | >10^14 | 10^13 | 10^12 | >10^13 | 10^14 | 10^13 |
flammability UL94 | + | + | - | (+) | (+) | - | + | + |
Anti-weathering | - | - | - | - | - | - | + | - |
Note: + =resistant; (+) =partly resistant; - =non-resistant |
Chemical Composition | Material | ||||||||
PI | PEEK | PTFE | PVDF | PA66 | POM | PP | HDPE | ABS | |
Acrtate | + | + | + | (+) | (+) | + | + | (+) | + |
Formic acid (10% water) | + | + | + | + | - | - | + | + | + |
Ammonia (10% water) | - | + | + | + | + | (+) | + | + | + |
Aether | + | + | + | + | + | + | + | ||
Petrol | + | + | + | + | + | + | (+) | (+) | (+) |
Bori acid (10% water) | + | + | (+) | + | + | + | + | + | |
Aminoform | + | + | + | - | - | (+) | - | - | |
Aeti aid 100% | (+) | - | + | - | - | + | + | - | |
Aceti aid (10% water) | + | + | + | - | (+) | + | + | + | |
HF | + | - | - | + | + | (+) | |||
Formaldehyde aqu (30% water) | + | + | + | + | - | + | + | + | |
Glycerin | + | + | + | + | + | + | + | ||
Iodine, Glycol | + | + | (+) | - | (+) | + | + | (+) | |
K2Cr2O7 (10% water) | + | + | + | - | + | + | + | ||
KMnO4 (1% water) | + | + | + | + | - | (+) | + | + | (+) |
2-Hydronyprpionic 10% | + | + | + | - | - | + | + | - | |
2-Hydronyprpionic 90% | + | + | + | + | + | (+) | + | + | + |
Nad (10% water) | + | + | + | + | + | + | + | + | + |
NaNO3 (10% water) | + | + | + | + | + | + | + | + | |
NaOH (50% water) | + | + | + | + | - | + | + | + | |
NaOH (5% water) | + | + | + | - | + | + | |||
Oxalic (10% water) | + | + | + | + | (+) | (+) | + | + | + |
Tetracarp | + | + | + | (+) | + | - | - | (+) | |
H3PO3 100% | + | + | - | + | + | ||||
H3PO4 (10% water) | + | + | + | - | - | + | + | ||
NHO3 (2% water) | + | + | + | + | - | - | + | + | + |
HCL (2% water) | + | + | + | (+) | - | - | + | + | + |
H2SO4 98% | - | + | - | - | + | (+) | - | ||
Soap liquid | + | + | + | + | + | + | |||
Alkaliliquid (10% water) | + | + | + | + | + | + | + | ||
Toluene | + | + | + | + | + | + | + | (+) | - |
Water, cold | + | + | + | + | + | + | + | + | + |
Water, hot | + | + | + | (+) | - | + | + | + | |
H2O2 (30% water) | (+) | + | + | - | - | + | + | + | |
H2O2 (0.5% water) | + | + | + | - | (+) | + | + | + | |
Asphalt | + | + | (+) | + | (+) | (+) | |||
Note: + =resistant; (+) =partly resistant; - =non-resistant |