Tobies Beteiligungsgesellschaft mbH
TL-HP Bushings
SELF-LUBRICATING PLASTIC BUSHINGS
TL-HP bushings incorporate friction and wear reducing additives throughout the plastic layer structure ensuring consistent performance in limited-motion applications and resistance to shock and vibration loads.
Applications
Product characteristics
TL-HP Bushing is materials designed for high pressure applications. The bushing component elastomeric plastic bonded in a metallic shell.
Design operation load
| Static pressure max (MPa): | 80 |
| Dynamic pressure max (MPa) Speed (m/s): | 60 |
| Speed (m/s): | 0.5 |
Standard tolerances
| Shaft tolerances: | H7/H8 |
| Optimal shaft roughness: | Ra < 0.4 -0.8 |
Advantages of TL-HP Bushing
- Maintenance free
- Low water absorption
- High load bearing capacity
- Lowest coefficient of friction
- High resistant shock loading
Complete configuration
TL- HP Bushings supplied with fully finished machining and size to suit the actual dimension approval by customer
For further information, please contact Tobieslager Bearings before use
Mating shaft
TL- HP Bushing were developed to run without lubrication. Therefore, counter shafts should be treated against corrosion. For optimum performance, a final machined mating surface finish of 0.4 to 0.8 micro- Ra is recommended.
Material data sheet
| Property | Unit | Value |
| Density - Plastic layer | 1.30 | |
| Hardness | Shore D | 82 ÷ 85 |
|
Max pressure: -Static -Dynamic |
MPa |
80 60 |
| Elongation at break - plastic layer | % | 40 |
| Tensile strength | MPa | 80 |
| Compressive strength | MPa | ≥500 |
| Dry friction coefficient | - | 0.04 – 0.10 |
| Abrasive wear- Plastic layer ( drum rotary -ASTMD696) | mm3 | 195 |
| Thermal expansion coefficient - Plastic layer | mm/.oC | 5 ×10 -5 |
| Temperature Range | oC | -60 ÷ 140 |
