State-of-the-art technology and constant upgrading is
applied throughout the SNFA Group. Each process, from
design to testing, from manufacturing to inspection, is
within a procedure that benefits from the necessary
resources and facilities.
Grinding and superfinishing are part of a complex
cycle of operations involving all the surfaces of
the bearing rings; these operations require the use
of special high-quality CNC machinery. Rings are
manufactured from bar, tube or forging. The most
common raw material used is 100Cr6 that must be
of the highest quality and inclusion free.
Matching is the operation whereby two or more
bearings are brought together for preloading
into sets. In order to obtain a precise preloading,
SNFA uses specialized equipment and the whole process
is strictly controlled. Cotton fabric reinforced
phenolic resin cages are machined from tube. Good
dynamic behavior of this vital bearing component
depends on raw material homogeneity and precise
geometry being obtained during manufacture.
Final inspection of rings is performed under
environmentally controlled conditions using
specialized equipment that simultaneously measures
all geometric parameters. Marking ensures
complete identification of the product.
Product design, from analysis computer programs
through to laboratory testing, is performed in
line with criteria conforming to ISO 9000 standards.
Functional tests are carried out in the SNFA
laboratories and are targeted at finding
new and innovative solutions for the benefit
of our customers.
Recently SNFA has developed a new program,
SECBA, that analyzes bearing performance by
taking into account the whole of the spindle
assembly. This allows customers to optimize
the choice of bearings during the design stage.
For more information please contact