Monday, January 25, 2010

Jena Tec Raydent coating extends linear rail life

Developed in Japan in the 1960's and well proven in industry, Raydent coating is a proprietary technology deposited by low temperature electrochemical bonded chrome ceramic particles diffusion bonded to provide a layer up to 1mm thick on the surface of the metallic substrate.

The Jena Tec SBC range of linear rail uses this proprietary technology to great effect for corrosion protection making it suitable for corrosive environments, food grade applications and clean room standard machinery such as that used in semi conductor manufacturing.

The method of coating deposition ensures no hydrogen embrittlement takes place while a high degree of elasticity is maintained in the coating such that even while the steel substrate is flexed and placed under repeated external deformation or bending, the coating maintains its appearance and performance and is free from flakes, chips and cracks which may appear in other anti-corrosion treatments such as chrome or nickel plating.

Tests conducted on linear rail within materials testing institutes showed that for a variety of tests, SBC rail Raydent coated outperformed alternative electro chemical methods with no evidence of rust whereas traditional coatings such as chrome plating corroded significantly. Raydent was effective in concentrated sulphuric acid environments, sodium hydroxide and salt water spray tests with no evidence of degradation.

Specially treated to order, the Jena Tec SBC Raydent treated range provides a superior lifetime performance in excess of 10 years.

For information contact the Jena Tec team on +44 (0)1623 726010 or email at

Tuesday, January 12, 2010

Jena Tec SBI Linear Rail offers 40% increase in capacity

The SBI range available from Jena Tec provides multiple benefits compared to those offered by the competition in relation to low noise, high rigidity and load coupled with a smooth movement and self adjusting mechanism. Increase of load carrying capacities of up to 40% can be achieved compared to standard block and rail systems.

Compared to conventional linear rail cross sections, the SBI range is approximately 10% lower in height with a wider through section of nearly 20%. Its improved lower cross sectional centre point offer greater structural rigidity, improved straightness during manufacturing and therefore a higher level of straightness in application which benefits the customer for smooth running. Heat treated to HRC60 the SBI range is extremely stable and shorter cross sectional areas mean grinding time and plastic deformation are reduced.

Similarly, Linear blocks are constructed from a hardened steel rigid structure with the same lower cross section centre as the rail and slightly longer block length meaning a greater number of balls with a smooth circular angular motion. This improved track profile and angle results in a smoother and quieter operation.

Standard across the range of SBC products is the heat and chemical resistant end plate with moulded return systems and a self aligning retained designed to ensure the end plate is correctly fitted in line with the main steel block. Despite an increased load carrying capability the additional length attributable to the SBI range is approximately only 3-4 mm longer than standard types dependant on carriage model made possible by an improved end plate design. When considering the advantage of 40% increase on load, the additional length is very modest.

Upper and bottom retainer plates fitted to each block ensure that loose steel balls are eliminated as well as skidding and poor rolling performance within the load zone. Additionally, this benefits the cleanliness of the block by preventing ingress of foreign substances. Advocating a simple design philosophy, the SBI retainers are snap assembled and self aligning. The moulded return plate contributes to the smooth running operation of the SBC range as well as keeping running noise low.

The SBI range achieve this through an improved contact angle of 52% versus the industry standard of 53%. The lower radius of curvature provides a broader contact surface compared to the relevant ball size possible and therefore improves the rigidity.
The improved angular ball re-circulation system with 4 row 2 point contact and 45 degree angular orientation ensure that excellent rolling performance is maintained with low noise even at all grades of pre-load.

For further information, contact the Jena Tec sales team at or on +44 (0)1623 726010.