SBD and THD Series
The specific one-piece pillow and take-up housings for conveyor duty. SBD bolts down as a pedestal block; THD is dimensioned to slide within a take-up frame. SES holds the range as an authorised SKF distributor, covering series SBD and THD; construction One-piece casting, bolted covers; shaft sizes Conveyor range, sleeve mounted; material Grey cast iron, ductile iron on request. Executions include SBD pillow housings, THD take-up housings, blind cover executions, taconite-sealed executions, among others. It is specified most often into coal handling conveyor tail pulleys and iron ore and sinter transfer conveyors. Every part is genuine SKF through official channels, with designation, specification and options confirmed against your duty before it ships — supplied from Kolkata and our branch network, with breakdown cover that does not sit in an inbox.
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Supplying India’s Industrial Names.
From integrated steel plants to power utilities and EPC majors — the works that cannot afford a counterfeit part specify through SES.
SBD
Bolt-down pillow housing
THD
Take-up frame housing
Bearing
Spherical roller, sleeve mounted
Sealing
Labyrinth or taconite with purge
Where it runs.
You will find SBD and THD Series in the parts of a plant where this particular duty actually occurs. In practice that means coal handling conveyor tail pulleys, iron ore and sinter transfer conveyors, crushed stone and aggregate belt take-ups, and equally cement clinker conveyor tail shafts, ash handling belt drives, bagasse and biomass fuel conveyors. What links them is the duty rather than the machine name — sbd: Bolt-down pillow housing. If your installation is not on that list it matters less than you would think: the operating condition decides the specification. Send us the load, the speed, the running temperature and the environment it runs in, and we will match it to the right execution in the SKF range and confirm what is in stock.
Specify it against the duty.
Specification here follows the operating condition, not the catalogue. Replacing a competitor block on the same shaft — Bolt centres and centre height checked against the old block, not just the bore. A non-split housing cannot be shimmed sideways to line up bolt holes. Housing sits below a chute where spillage builds up — A taconite seal with the purge nipple extended to a reachable point. A grease point buried under spillage is a grease point that never gets used. Take-up carriage travels a long distance during tensioning — The THD length checked against full travel. A housing that runs out of guide at full extension cocks in the frame. Where two of those apply at once, specify for the harsher of the two — under-specifying is what puts the part back on the bench a month later. Send us the duty and we will confirm the execution.
Ordering this from SES.
Hold one spare housing per conveyor size on the shelf rather than one per position. These castings crack from impact damage far more often than they wear out, and a cracked housing is a same-shift replacement or nothing.