The UPEC Industrial Group is actively investing in development of HARP production capabilities.
At present HARP realizes a Complex Modernization Project on production the railway roller bearings for railway cars with total estimated cost of 25 000 000 EUR. The goal of the project is to launch the production of brand new high quality bearings, increasing annual output from 800 000 to 1 200 000 pieces. Moreover, as a result of modernization, HARP will be able to produce about 250 000 components for bearing manufacturers worldwide, along with launch of a new generation of cartridge type bearings.
At the end of 2009, HARP increased its production capacity of the railway bearings by 1.5 times: the company reached a production capacity of 100 000 bearings per month or 1 200 000 pieces per year.
Since 2011, production capacity for the railway bearings increased to 120 000 pieces per month (up to 1 500 000 bearings per year).
Today HARP has a full technological cycle of the roller bearing production, which are applied in the railway cars:
- bearing blanks are pre-fabricated in the forging shop on seven automated hot-stamping lines
- then blanks are annealed at new A/SP-1200 ELTERMA equipment in order to obtain uniform dimensions and microstructure density of the blank parts, which leads to the improvement of accuracy while further machining, reduction of allowance in the next processes and increase of the product life
- after annealing the blanks undergo processing on the CNC-automated machines in the turning workshop with application of such modern equipment as OKUMA (Japan), FAMAR (Italy), ensuring high accuracy of the bearing rings
- then follows thermal hardening processes of the bearings inner rings (CRB, CRU Duplex, TBU) with high frequency current, and the bulk hardening of outer rings. Hardening of the rings with high frequency current is HARP own unique development. For bulk hardening of outer rings the plant purchased 3 production lines from SECO / WARWICK THERMAL S.A. (USA/Poland). The rings hardening technology enables to receive high hardness of inner ring outer surface with softer core, thus increasing the bearing life
- rollers are manufactured from bars on automated turning machines. After heat treatment, rollers undergo grinding and finishing operations on the special equipment of the automated lines
- roller bearing cages are manufactured by brass casting with further machining. Polyamide cages are casted on the automated thermoplastic machines
Improving of the technology process enables to halve the labour coefficient, improve the production process stability. Furthermore, it significantly improves quality and performance characteristics of the bearings.