Customization: | Available |
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After-sales Service: | 1 Years |
Certification: | DIN, GB, BS, ASTM, AISI |
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Round Laminated Elastomeric Bearing Sizes (OD/ mm) | ||||||
150 | 200 | 250 | 300 | 350 | 400 | 450 |
500 | 550 | 600 | 650 | 700 | 750 | 800 |
With or without the PTFE plate |
No. | I×l2/d (mm) | R. | S | t(mm) | Δl2(mm) | Δl2(mm) | t.(mm) | tanθ(Unitofθ:rad) | |
Warm area | Cold area | ||||||||
1 | 100×150 | 101 | 5.48 | 21 | 5.0 | 7.0 | 15 | 0.0107 | 0.0090 |
28 | 7.5 | 10.5 | 20 | 0.0160 | 0.0135 | ||||
2 | 100×200 | 137 | 6.11 | 21 | 5.0 | 7.0 | 15 | 0.0087 | 0.0074 |
28 | 75 | 10.5 | 20 | 0.0131 | 0.0111 | ||||
3 | d150(GBZY) | 154 | 7.00 | 21 | 5.0 | 7.0 | 15 | 0.0057 | 0.0050 |
28 | 7.5 | 10.5 | 20 | 0.0085 | 0.0073 | ||||
35 | 10.0 | 14.0 | 25 | 0.0114 | 0.0097 | ||||
42 | 12.5 | 17.5 | 30 | 0.0143 | 0.0122 | ||||
4 | 150×150 | 196 | 7.00 | 21 | 5.0 | 7.0 | 15 | 0.0057 | 0.0050 |
28 | 7.5 | 10.5 | 20 | 0.0085 | 0.0073 | ||||
35 | 10.0 | 14.0 | 25 | 0.0114 | 0.0097 | ||||
42 | 12.5 | 17.5 | 30 | 0.0143 | 0.0122 | ||||
5 | 150×200 | 266 | 8.06 | 21 | 5.0 | 7.0 | 15 | 0.0050 | |
28 | 7.5 | 10.5 | 20 | 0.0067 | 0.0057 | ||||
35 | 10.0 | 14.0 | 25 | 0.0089 | 0.0077 | ||||
42 | 17.5 | 30 | 0.0112 | 0.0096 | |||||
6 | 150×250 | 336 | 8.84 | 28 | 7.5 | 10.5 | 20 | 0.0057 | 0.0050 |
35 | 10.0 | 14.0 | 25 | 0.0077 | 0.0066 |
Physical Properties | Unit | Value Specified | Test Method | ||
Hardness | IRHD | 50 ± 5 | 60 ± 5 | 70 ± 5 | IS: 3400 (Part II) |
Minimum Tensile Strength - Molded Test Piece - Test Piece from Bearing | MPa | 17 14 | 17 14 | 17 14 | IS: 3400 (Part I) |
Minimum Elongation at Break - Molded Test Piece - Test Piece from Bearing | % | 450 400 | 400 350 | 300 250 | IS: 3400 (Part I) |
Maximum Compression Set (24h, 100°C) | % | 35 | IS: 3400 (Part X) | ||
Accelerated Ageing 72h, 100 ± 1°C | |||||
Maximum Change in Hardness | IRHD | +5 | |||
Maximum Change in Tensile Strength | % | - 15 | IS: 3400 (Part IV) | ||
Maximum Change in Elongation | % | - 30 | |||
Adhesion Strength, Min. | kN/m | 7 | IS: 3400 (Part XIV) | ||
Ash Content, Max. | % | 5 | IS: 3400 (Part XXII) | ||
Ozone Resistance | No Cracking | IS: 3400 (Part XX) |
TESTING REPORT | ||||
Name of goods | GYZ rubber bridge pad | Lot No. | 20241226 | |
Size | 300*52mm | Production date | 26-Dec | |
Quantity | 8 | Material | Nature rubber | |
Steel size(mm) | 290*3mm | Lays of steel | 5 | |
Rubber thickness/layer(mm) | 8 | Total rubber thickness(mm) | 37 | |
Testing reports | ||||
Testing items | Standard | Results | Remarks | |
Bearing ultimate compressive strength[Mpa] | ≥70 | 72 | Approved | |
Compressive elastic modulus | 442 | 443 | Approved | |
[Map] | ||||
Friction coefficient | ≤0.03 | 0.02 | Approved | |
[MPa] | ||||
Shear elastic modulus after aging | 1 | 1.02 | Approved | |
[MPa] | ||||
In conclusion | After testing, the technical indicators meet the JT/T4-2019 standard and are allowed to leave the factory. | |||
Remarks | Compressive elastic modulus E±E×20%; shear elastic modulus G±G×15% |