Railway Wheel-Sets
This unit provides production of axles, assembly and repair of wheel–sets for railway vehicles, including replacement of tyres, disc and gearing wheels, brake discs, installation of bearing boxes on axle journals, static balancing of solid and tyred wheels, and the prescribed tests.
The unit holds certification qualifying it for deliveries for Czech and Slovak Railways. More than 60-year long tradition with production of wheel–sets for diesel-electric locomotives, railway cars, suburb motor trains, pantograph units, tramway axles and mono-blocks, cars for steel production and prototypes.
Basic portfolio of products and services:
 | Railway wheel–sets |
| - Production of new wheel–sets |
| - Repairs of wheel–sets (tyres, discs, brake discs, gear wheels) |
| Axles (for railway vehicles and tramways) |
| - Driving axles |
| - Common axles |
| - Disc-wheel axles |
| Tramway monoblock wheels
|
Tests
Tests of material and mechanical parts for identification of surface and internal defects by the following methods:
| ultrasound method |
| capillary method |
| magnetic powder method |
| visual method
|
All tests are documented by the corresponding protocols in accordance with EN, ČSN.
Production parameters
Wheel-set parameters
| Wheel diameter: | 360 mm - 1 250 mm |
| Wheel track: | max. 1 680 mm |
| Weight: | max. 3 000 kg |
Axles – driving, common and axles for trams
| Length: | max. 2 400 mm |
| Diameter: | max. 450 mm |
| Weight: | max. 1 000 kg |
| Material: | ČSN 11 558.1, ČSN 15 230.9, Os.L as per GOST 4728-79,
EA1N, EA4T as per EN 13261;
hot rolled round bar grade 15 230.9 |
Rolled and cast solid wheels, composite (tyred) wheels
| External diameter: | max. 1 250 mm |
| Weight: | max. 1 000 kg |
| Rolled wheels: | profile as per UIC – ORE, or based on agreement, material: as per EN 13 262 (UIC 812-3) |
| Cast wheels: |
material as per ČSN 42 2711, 42 2712, 42 2650, 42 2660, or based on agreement, any shape of the wheel (depending on the customer)
|
| Tyred wheels: |
disc castings, material 20L, 25L as per GOST 977-75, 4491-86
up to a diameter of 900 mm, or based on agreement. Castings of material ČSN 42 2650,
ČSN 42 2660, external diameter 710 mm - 900 mm, any shape of the wheel
(depending on the customer) |
Tyres
| External diameter: | max. 1 250 mm |
| Material: | rolled piece of quality grade as per UIC 810-1 or GOST 398-2010 |
Monoblock wheels for trams
| External diameter | 650 mm - 710 mm |
| Rim width: | 85 mm - 120 mm |
| Material: | rolled piece of quality grade as per TM1 (12 063.7), or based on agreement.. |
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