Buying ready polyurethane bushings in Lviv is often harder than it seems: the market is full of parts of unknown origin, and for a rare joint the right size simply is not available. Cast polyurethane solves both problems, because it is cast for a specific drawing and it serves many times longer than rubber. Let us break down why a polyurethane bushing is more practical, how to order it with delivery to Lviv and which hardness to choose.
Why a Polyurethane Bushing Is a Better Choice Than Rubber
For a joint that works under torsion, vibration and dirt, polyurethane beats rubber first of all on wear resistance. The abrasion of cast polyurethane per DIN 53516 is 38-39 mm³, whereas for common SBR rubber it reaches 100-200 mm³, and for NBR nitrile up to 80-150 mm³. That is, rubber in the same seat loses volume 2 to 5 times faster and develops play sooner.
The second advantage is behavior under load. TIMOL polyurethane returns to shape after deformation and does not settle, whereas rubber compresses over time, cracks and starts to knock. Because of this, owners confuse worn bushings with worn shock absorbers. Add to this excellent resistance to lubricants and reagents, and it becomes clear why in Lviv conditions with their winter chemistry polyurethane outlasts rubber noticeably more easily.
Polyurethane Versus Rubber in Bushings: the Numbers
So that the choice is not made by ear, here are the material characteristics from standard references alongside the verified data of TIMOL polyurethane. This table explains the difference in service life at a glance.
| Characteristic | TIMOL Cast Polyurethane | SBR Rubber | NBR Rubber |
|---|---|---|---|
| Abrasion DIN 53516, mm³ | 38-39 | 100-200 | 80-150 |
| Working temperature, °C | -60…+100 | -40…+80 | -30…+100 |
| Tensile strength, MPa | 39-87 | 8-20 | 10-25 |
| Tear resistance, kN/m | 40-120 | 8-35 | 10-50 |
| Shore hardness | 85A-95A | 40A-80A | 40A-90A |
| Resistance to lubricants | excellent | low | good |
The biggest difference is precisely in abrasion and temperature: polyurethane does not stiffen in the cold down to -60 °C and wears many times slower. Rubber wins only on material price, but the faster replacement eats up that saving.
How to Order Bushings in Lviv Without a Warehouse in the City
You can buy polyurethane bushings in Lviv remotely, without a physical store in the city. The scheme is simple: you send a drawing, dimension or a sample of the old part, the factory calculates production and ships the finished batch by a transport company. Since polyurethane products are light, delivery across Ukraine is usually inexpensive even for large orders.
The main advantage of this approach is production for your joint, not selection from whatever is on the shelf. The open casting technology does not require separate expensive tooling for each diameter, so it is realistic to order even a single bushing for rare or discontinued equipment. See the range of standard products in the catalog of polyurethane products, and the basic material properties in the reference information section.
TIMOL engineer’s tip: if the original bushing is already worn and no longer holds its size, send a sample together with a measurement of the seat in the joint, not just the part itself. A worn bushing gives an understated diameter, and making a part from it will repeat the error. From the seat dimension we will restore the correct geometry and select the hardness to match your load.
Which Hardness and Geometry to Choose
The bushing hardness decides the balance between comfort and joint stiffness. A softer part in the 70-85 Shore A range dampens vibration better and does not transmit knocks, while a harder one gives a more precise response but a stiffer ride. For heavy-duty industrial and agricultural equipment, higher hardness is used, right up to the Shore D zone, where resistance to being pressed through matters.
The geometry is selected for the specific seat: the diameter of the bar or pin, the length of the bushing, the presence of a flange. This is exactly why production from a drawing or sample gives a more precise fit than a universal part from the market. The right pairing of hardness plus geometry is what extends the service life of the joint many times over.
Where Else Polyurethane Bushings Are Fitted
Bushings and silent blocks are only part of the range. The same cast polyurethane in Lviv and across Ukraine is used for rollers, wheels, conveyor scrapers, lining of hoppers and pipelines, seals and buffers. The logic is the same everywhere: where a part works under wear, impact and chemicals, polyurethane gives a longer service life than rubber, plastic or metal.
This is convenient when an enterprise needs to cover several items at once from a single manufacturer: bushings for equipment, lining for a line, wheels for trolleys. One order, one material with predictable characteristics.
Summary and Ordering With Delivery
For Lviv customers, polyurethane bushings deliver the main thing: a longer service life and a precise fit for your joint. The material wears many times slower than rubber, is not afraid of frost down to -60 °C and winter chemicals, and production from a drawing covers even rare sizes. A physical warehouse in the city is not needed for this, the part is made for you and brought by a transport company.
To get a calculation for your drawing or sample and to clarify delivery times to Lviv, contact the TIMOL factory through the contacts. An engineer will help determine the hardness, geometry and optimal batch for your joint.