Lubrication - Flowserve Limitorque HBC Series User Instructions

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Flowserve Limitorque HBC gearboxes are factory-lubricated with an NLGI grade 0 calcium sulphonate grease
suitable for a temperature range of -20°F to +150°F (-29°C to +60°C). Other lubricants approved by Flowserve
Limitorque may be used based on customer requirements. See the nameplate for lubricant type.
Quantity
Limitorque gearboxes are built to operate on the partial immersion principle. The primary concern regarding the
amount of lubricant is whether the "worm" is totally immersed in grease. This can be verified by the use of one or
more of the many "fill" and "drain" plugs provided on the gearbox housing.
Quality
When removing a "fill" or "drain" plug to inspect the lubricant level, remove a small amount and ensure that it is
clean and free of any contaminant, including water. Should dirt, water, or other foreign matter be found, the lubricant
must be replaced and will require some partial disassembly. Contact Flowserve Limitorque with the gearbox order
number or serial number for replacement parts.
Consistency
The main gearbox lubricant should be slightly fluid, approximating a standard NLGI-0 grade consistency.
Alternate lubricants may be used in place of the standard lubricants supplied by Flowserve, provided they are a
calcium sulphonate or similar lubricant.
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CAUTION: Do not add a different lubricant to a Flowserve Limitorque gearbox unless it is of the same soap base as
the existing lubricant, or you have received the approval of the lubricant manufacturer.

Lubrication

Limitorque HBC Series FCD LMENIM3501-01 – 03/14
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