| TGU Product Features | |
| Integrated design of the oil seal outer edge shoulder reinforced with a fabric insert and a pure rubber sealing lip, with a spring pre-loaded oil seal lip design. |
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| Advantages of TGU Products | |
| In the heavy machinery manufacturing industry, they are typically used on the shaft ends of grinders, metallurgical rolling mills, or large gearbox drive shafts with lubrication conditions. The oil seal outer edge made of fabric insert is particularly strong and provides good static sealing; The sealing lip has lasting radial pressure contact; The sealing lip is highly wear-resistant; Split seals can be provided for easy installation. |
| Application Conditions |
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| Medium | Mineral oils | Water | Greases | Pressure Mpa | Rotating speed m/s |
| NBR | -30℃ ~ +100℃ | +5℃ ~ +100℃ | -30℃ ~ +100℃ | 0.05 | 20 |
| FKM | -10℃ ~ +180℃ | +5℃ ~ +100℃ | -10℃ ~ +180℃ | 25 | |
| HNBR | -20℃ ~ +140℃ | +5℃ ~ +100℃ | -20℃ ~ +140℃ | 25 | |
| Please consult for other media; various parameters should not be used at maximum values simultaneously. | |||||
| Surface Machining Accuracy | ||
| Surface Roughness | Contact shaft surface | Cavity |
| Ra | ≤0.6 μm | ≤4.0μm |
| Rmax | ≤2.5 μm | ≤15.0 μm |
| The sealing pair contact surface should be vertically fed with "non-directional" grinding to avoid leakage caused by spiral lines generated by machining. The surface hardness must be close to 60HRC (minimum hardening thickness 0.5mm). As the circumferential speed increases, the peak-to-valley height Ra of the contact surface should be appropriately increased. The surface should not be too smooth to form a proper oil film; the recommended value is: Ra min=0.1μm. When the cutting depth c=Rz/2 and the baseline Cref=0%, the surface support length ratio Mr >50% to a maximum of 90%. Shaft surface corrosion, scratches, and pores must be avoided. |
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| Installation and Assembly |
| For TGU fabric-reinforced seals, the cavity must be axial to facilitate axial assembly of the seal and ensure minimal seal tilting.
For reliable sealing function, the actual axial width of TGU is always greater than the nominal size. The TGU seal must be axially compressed to size "L". Open cavities must have a cover plate and be fastened with screws. Appropriate compression deformation force is necessary for the use of TGU. The cover plate and tightening screws should be properly designed. |
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