FAG SNL516-613 Split Plummer Block Housing

The FAG SNL516-613 is a split plummer block bearing housing in the SNL 516 size series, designed to accommodate shaft diameters of 75–80 mm and compatible with FAG spherical roller bearings in the 22216, 22316, and 21316 series, as well as FAG spherical ball bearings and Y-bearings in corresponding bore sizes. The split (two-piece) housing design is the fundamental advantage of the SNL plummer block: the housing splits horizontally at the shaft centre height, allowing the shaft assembly to be dismounted and re-mounted without disturbing the shaft position — an operational characteristic that is essential in industrial fan and conveyor drive assemblies across Saudi Arabia's process plant, mining, and utility sectors, where bearing replacement must be executed during brief planned maintenance windows without crane-based shaft removal operations. The -613 suffix designates the specific housing bore and seal combination compatible with TDI and TDO bearing rings in the 516 shaft seat dimension.

Schaeffler's SNL housing is manufactured from grey cast iron (GG25 grade) with a finish machined housing bore held to H7 tolerance — the correct fit for spherical roller outer rings — and a base flange machined to a flatness that allows direct bolting to I-beam, concrete, or fabricated steel pedestal foundations. The housing incorporates vertical and horizontal split joints sealed with a liquid gasket compound rather than a static O-ring, a design choice that simplifies re-assembly and eliminates the risk of gasket cutting during housing split separation. The standard SNL housing is supplied with felt seals as standard (variants with labyrinth seal rings and oil bath lubrication are available), and the split design allows the seal rings to be replaced without bearing removal — a significant advantage in dusty conveyor and fan shaft applications at Saudi cement plants, power stations, and process industries.

FAG SNL split plummer blocks are the dominant bearing housing type in Saudi Arabia's industrial fan and conveyor drive market. Saudi Cement Company plants in Yanbu, Jubail, and the Riyadh area use FAG SNL housings extensively on kiln feed conveyor drives, raw mill fan shaft bearings, and clinker conveyor tail shaft assemblies, where split plummer blocks are essential for the inspection and replacement of bearings without full shaft removal from the conveyor structure. MARAFIQ power plant and utility cooling tower fan shaft assemblies rely on FAG SNL housings for their primary shaft bearing support, where the split design allows bearing inspection and replacement during the 48-hour planned maintenance outage windows that characterise Saudi utility operations. Razz Middle East stocks the FAG SNL series from SNL 509 through SNL 544 alongside compatible Schaeffler spherical roller bearings and TDO/TDI seal rings, enabling customers to order a complete plummer block bearing assembly for direct installation.

Razz Middle East's engineering team provides plummer block assembly drawing support, housing mounting bolt torque specifications, bearing-to-housing fit verification, and lubrication recommendations for FAG SNL plummer block installations across Saudi Arabia's industrial sectors, ensuring correct first-installation and reducing the risk of housing-induced bearing failures.