Model NO.
Customized Type
Specification
Customized
Trademark
znspring
Origin
Dezhou China
HS Code
4016999090
Production Capacity
300 Sets / Day
After-sales Service:
Technical Support
Warranty:
1year
Customized:
Customized
Certification:
ISO14001, ISO9001, ISO22163;ISO45001
Type:
Train Bogie
Transport Package:
Polybag-Paper Carton-Wooden Case
Installed between the bogie axle box or the balance beam and the frame is called the axle box suspension device, also known as the first suspension device
1. Control the movement of machinery, such as springs that control the opening and closing of cylinder valves in internal combustion engines, and control springs in clutches;
2. Absorb vibration and impact energy, such as shock-absorbing springs in various vehicles and springs of various buffers;
| Number | Performance point | Indicator | Unit | Reference Standard |
| 1 | Hardness (Shore A) | 50±5 | Shore A | GB/T 531.1 |
| 2 | Tensile Strength | ≥14 | MPa | GB/T 528 |
| 3 | Elongation at break | ≥400 | % | GB/T 528 |
| 4 | Tear strength without incision | ≥26 | kN/m | GB/T 529 |
| 5 | Metal to rubber bond strength | ≥4 | MPa | GB/T 11211 |
| 6 | Constant compression set(Type A, 70oC×72h) | ≤30 | % | GB/T 7759 |
| 7 | Low temperature brittleness temperature | ≤-50 | oC | GB/T 1682 |
| 8 | Hot air aging (70oC×24h) Hardness change | ≤7 | Shore A | GB/T 3512 |
| Hot air aging (70oC×24h) Tensile strength change rate | ≥-25 | % | GB/T 3512 | |
| Hot air aging (70oC×24h) Standardized rate of elongation at break | 25 | % | GB/T 3512 | |
| 9 | DIN wear | ≤200 | mm3 | GB/T 9867 |
| 10 | Ozone aging resistance (40oC×24h, 50pphm, relative humidity≤65%, pre-extension 5%) | No cracks | / | GB/T 7762 |
| 11 | Compression creep performance, creep increment (70oC×72h) | ≤0.045 | mm/mm | GB/T 19242 |
| 12 | Oil resistance, mass change rate (70oC×72h, No. 1 oil) | ≤80 | % | GB/T 1690 |
| 13 | Cleaning agent resistance, hardness change (50oC×72h, 5% oxalic acid aqueous solution) | ±5 | Shore A | GB/T 1690 |
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