Schaeffler introduce FAG Black Series housing units
New housing unit range designed to offer direct replacements for many Far Eastern equivalents
PRECISION bearing manufacturers Schaeffler UK have extended their range of bearing housings to include units manufactured to Japanese Industrial Standards (JIS). This means that in terms of their boundary dimensions, mounting and lubrication, the FAG housing units correspond precisely to those of Japanese brands. They are also available with inch-size bore dimensions.
The new FAG Black Series of radial insert ball bearings and housing units from Schaeffler are robust, ready-to-fit, self-contained units that are said to provide simplified mounting, smooth running and high reliability. The housing units are suitable for a variety of industrial applications, including harsh operating environments such as construction and mining machinery; pumps and fans; and conveying.
Black Series radial insert ball bearings with a spherical outer ring are based on Series 62 deep-groove ball bearings and are manufactured to JIS B 1558. The outer rings, inner rings and shields are coated with Durotect B – a thin, matt black, mixed iron oxide layer developed by Schaeffler that inhibits the formation of rust. The radial insert ball bearings are suitable for drawn shafts with tolerances of h6 to h9 and are designed for operating temperatures from –20°C to +120°C.
Black Series housing units are manufactured to JIS B 1559. The units consist of flake graphite cast iron housings with a spherical seating in which radial insert ball bearings are located. The units are selectively matched and available with seven different black-painted housings as ‘plummer block’, flanged or take-up housing units.
Plummer block housing units have a housing with a short or long base and are screw mounted to the adjacent construction using slots or fixing holes. Long-base versions are available with either grub screws (UC) or adapter sleeves (UK) radial insert ball bearings. UK inserts are suitable for bearing arrangements with alternating direction of rotation, even under high speed and load.
With the UK version, the radial insert ball bearings are supplied with the adapter sleeves already mounted. This means the housing unit can be mounted immediately without any additional assembly work. The sleeve is also surface treated with Durotect B to inhibit the formation of rust.
Flanged housing, which can be supplied as two-bolt oval or four-bolt square or round units, are available with grub screw (UC) or adapter sleeves (UK) radial insert ball bearings.
Take-up housing units can be moved or swivelled and are suitable for applications where the shaft must be displaced from its normal axis. When fitted in housings, the spherical seating can allow for static misalignment of the shaft and/or assembly. The housings have a re-lubrication facility and are supplied with the appropriate grease fitting and dust cap.
Black Series housing units are available with a J7 fit (ie medium swing torque), which is increasingly demanded, particularly in Europe. Other housing tolerances are available on demand.
Dr Steve Lacey, engineering manager at Schaeffler UK, commented: ‘The Black Series housing units complement our existing ISO range of INA X-life radial insert ball bearings and housing units. For customers who require a direct drop-in replacement housing unit for their existing Japanese-manufactured one, the Black Series is an easy-to-mount, smooth-running, low-noise alternative that can support moderate to high radial and axial loads.
‘The Durotect B coating counteracts the formation of rust and the proven seal, firmly staked in the outer ring, also prevents displacement during the re-lubrication process. This means longer operating life, reduced maintenance and increased availability of plant and machinery for extremely effective total cost of ownership.’
For more information on the Black Series or to request a free copy of the catalogue (TPI 219), contact Schaeffler UK’s Marketing Department via email: [email protected]