Sentrimax overhauls legacy Sharples decanter and tricanter centrifuges used by Richmond, Virginia-area pulp and paper, chemical and general manufacturing plants, shipping units to its Kitchener, Ontario facility for teardown, inspection, parts replacement, gearbox work, balancing and a full test run before the machine returns to service.
Coverage for Virginia’s Industrial Corridor
Richmond sits within a Mid-Atlantic industrial corridor that includes pulp and paper
mills, chemical manufacturing plants and general manufacturing facilities, several of which
run Sharples decanters and tricanters that have been in service for decades. Sentrimax does
not operate a facility in Richmond. Equipment from this region typically ships to the
Kitchener, Ontario facility – 2300 Shirley Dr, Unit 3, Kitchener, ON N2B 3Y2, 877-741-0118 –
which handles the Mid-Atlantic corridor as part of its regular workload. Sentrimax is an
independent MRO provider founded in 2002; it is not authorized, certified or partnered by
Sharples or any other centrifuge manufacturer.
Pulp and Paper Duty on a Sharples Decanter
Pulp and paper mills use decanter centrifuges primarily for effluent clarification and
solids recovery from process water, separating fiber and other solids before water is
recycled or discharged. That duty is generally lower in abrasive wear than an oilfield or
mining application, but it is hard on seals and internal surfaces in a different way: process
water carries fine fiber and chemical residue from the pulping process, which can foul
internal clearances gradually rather than eroding them outright. A Sharples unit in this
service often shows reduced separation efficiency – cloudier effluent, more fiber carryover –
well before it shows a mechanical symptom like vibration.
| Application | Typical wear pattern | What the inspection focuses on |
|---|---|---|
| Pulp and paper effluent clarification | Fine fiber and chemical residue fouling internal clearances | Separation efficiency check, precision fit measurement |
| Chemical manufacturing solids separation | Corrosion or chemical attack on wetted surfaces | Material condition assessment, coating evaluation |
| General manufacturing process solids | Variable wear depending on the specific process stream | Full teardown measurement rather than assumed wear rate |
Chemical Manufacturing Duty and Material Compatibility
Chemical plants running Sharples centrifuges for process solids separation put a
different kind of stress on the machine than pulp and paper duty does. Depending on the
specific chemistry involved, wetted components can be exposed to corrosive or reactive
process fluids that attack standard materials faster than an inert process stream would.
Sentrimax assesses material condition during every teardown and can recommend coating or
material upgrades where a documented pattern of chemical attack, rather than simple mechanical
wear, is the dominant failure mode – a distinction that matters because a chemical-resistant
coating solves a different problem than the hardfacing used against abrasive wear.
Parts for an Aging, Multi-Application Fleet
- Measurement of the worn or damaged component against its original design tolerance
- Design or reverse-engineering of a replacement where the OEM original is unavailable
- Machining to meet or exceed OEM specification
- Coating or material upgrade evaluation where chemical attack, not just mechanical wear,
is driving failures - Dynamic balancing to ISO G 0.5 once the rotating assembly is reassembled
Sharples has changed ownership and product lines multiple times over its history, and
older bowl, scroll and gearbox designs are not always fully supported through current OEM
parts channels. Sentrimax’s engineering services and machine shop – milling, lathe-turning,
precision-grinding – can design new or reverse-engineered parts to fill that gap, keeping a
mechanically sound unit in service rather than treating parts scarcity as a reason to replace
equipment that has not reached the end of its working life.
Gearbox Rebuilds and Controls Work
Sentrimax repairs planetary two- and three-stage gearboxes and CYCLO gearboxes as well as
hydraulic backdrives, common on legacy Sharples equipment, and treats a gearbox inspection as
a standard part of every teardown rather than a separately requested service. On units where
the original control panel has become unreliable after decades of service, PLC and HMI
upgrades, VFD troubleshooting and replacement, and brake system integration are available
alongside the mechanical rebuild.
Inspection Through Delivery
- Receiving and inspection. The unit is documented, disassembled and
steam-cleaned for a 75-point technician inspection, with an oil sample sent for third-party
analysis. - Quotation package. Inspection findings, scope of work, required parts,
photos, pricing and an estimated delivery time are prepared for approval. - Reparar. Approved parts are machined to meet or exceed OEM tolerance, and
the rotating assembly is reassembled and balanced to ISO G 0.5. - Test run and delivery. A full performance test run precedes shipment
through Sentrimax’s broker network, with a detailed report of parts, labor and analyses
completed.
Stop the machine if
Effluent clarity drops sharply without a
corresponding process change, a bearing runs hotter than its normal range, or the gearbox
produces a new grinding or whining sound. Continuing to run an aging Sharples unit through
these symptoms risks converting a seal-and-clearance repair into a full rotating assembly
rebuild.
Deciding Between Rebuild and Replacement
A Sharples unit that has been through several rebuild cycles, particularly one exposed to
chemical attack rather than purely mechanical wear, eventually reaches a point where the
underlying castings and housing have absorbed enough cumulative damage that another repair no
longer makes economic sense compared to a refurbished replacement. Sentrimax sells new and
refurbished centrifuges and ancillary equipment, including gearboxes and electrical
components, and the inspection data from a current teardown is useful evidence for making
that comparison rather than guessing at remaining service life from the outside without
opening the machine up first.
Keeping a Process Running During a Rebuild
Rental centrifuges are available for pulp and paper or chemical manufacturing facilities
that cannot idle a process while a Sharples unit is being inspected, repaired or rebuilt.
Arranging that coverage at the same time a unit is scheduled for shipment is generally more
practical than requesting it after a process has already lost its centrifuge capacity and
production is already backing up.
Balancing After a Parts Replacement
Replacing a bowl, scroll section or other rotating component changes the mass
distribution of the assembly even when the new part is machined to the same nominal
dimensions as the original. A rotating assembly that goes back into service without being
rebalanced will run rougher than it did before the repair, undermining the benefit of
replacing the worn part in the first place. Sentrimax balances every rebuilt rotating
assembly to ISO G 0.5 on a three-plane balancing setup before it ships, regardless of whether
the job started as a single parts order or a full inspection – a step that matters as much on
a pulp mill’s low-abrasion decanter as it does on an oilfield unit running weighted mud.
Building a Maintenance Record Across a Mixed-Use Facility
Manufacturing sites in the Richmond corridor that run more than one Sharples unit across
different process lines benefit from treating each machine’s inspection report as a separate
record tied to its specific duty, rather than assuming shared maintenance needs because the
equipment carries the same brand name. The 75-point inspection, oil sample analysis and
annotated photographs generated at each teardown reflect that unit’s actual condition and
process exposure, which is a more reliable basis for prioritizing maintenance spending across
a mixed fleet than treating every Sharples machine on site as functionally identical. Over
several service cycles, that record also clarifies when a specific unit has crossed the point
where a rebuild no longer makes better economic sense than a refurbished replacement.
What a Nameplate Cannot Tell You
A Sharples nameplate identifies the model and, where still legible after decades of
service, a serial number – but it does not indicate how much wear has actually accumulated on
the bowl, scroll or gearbox internals. Two units with identical nameplates running in
different parts of the same facility can need very different parts depending on their
individual process exposure and service history, which is why Sentrimax measures precision
fits during the actual teardown rather than quoting parts from the model number alone. That
measurement step also catches wear that has not yet produced an obvious symptom, which
matters for equipment old enough that the original manufacturer’s own service records may no
longer exist anywhere, at Sentrimax or otherwise.
Wider Coverage for Sharples Owners
This page covers full Sharples repair for Richmond-area pulp, paper and chemical plants.
For parts availability and reverse-engineering options specifically, see the
piezas de centrífuga page. The general decanter and tricanter
El proceso de reconstrucción que se aplica una vez que se abre una máquina está cubierto por
Reparación de centrífuga decantadora, y esta página se encuentra
bajo el marco más amplio Reparación de centrífugas Sharples centro.
Cobertura en el resto de Norteamérica, incluidas las instalaciones de Mansfield y Edmonton,
Se detalla en el áreas de servicio de centrifugadoras página.
Solicite una evaluación de su unidad Sharples
Enviar el modelo y el número de serie, junto con una descripción del fluido del proceso y
Los síntomas recientes ayudan a la planta de Kitchener a planificar la inspección antes del envío de la unidad.
Los representantes que hablan inglés, francés y español pueden ayudar a coordinar la logística de envío.
para el corredor del Atlántico Medio, y se puede organizar con anticipación el alquiler de una centrífuga para una
Instalación que desea contar con la cobertura necesaria antes de conocer los resultados de la inspección.
Preguntas frecuentes
¿Tiene Sentrimax alguna instalación en Richmond?
No. La planta de Sentrimax en Kitchener, Ontario, gestiona el corredor del Atlántico Medio como parte de su carga de trabajo habitual, y los equipos se envían de ida y vuelta a través de la red de intermediarios dedicada de Sentrimax.
¿Está Sentrimax autorizada o certificada por Sharples?
No. Sentrimax es un proveedor independiente de servicios de mantenimiento, reparación y operaciones (MRO) y no está autorizado, certificado ni asociado con Sharples ni con ningún otro fabricante de centrífugas. La marca describe el equipo al que presta servicio, no implica ninguna afiliación.
¿En qué se diferencia el impuesto sobre la pulpa y el papel del impuesto sobre la fabricación de productos químicos en una unidad Sharples?
La industria de la pulpa y el papel tiende a ensuciar gradualmente los espacios internos con fibras finas y residuos químicos, lo que reduce la eficiencia de separación antes de que aparezca cualquier síntoma mecánico. La industria química puede exponer los componentes en contacto con fluidos de proceso corrosivos que atacan directamente los materiales.
¿Puede Sentrimax recomendar una mejora del recubrimiento o del material para proteger contra ataques químicos en lugar de contra el desgaste mecánico?
Sí. Sentrimax evalúa el estado del material durante el desmontaje y puede recomendar un recubrimiento o una mejora del material cuando el modo de fallo predominante sea un patrón documentado de ataque químico, en lugar de desgaste abrasivo.
¿Puede Sentrimax encontrar repuestos para una unidad Sharples antigua que ya no cuenta con el soporte del fabricante?
A menudo, sí. El taller de mecanizado de Sentrimax puede diseñar componentes nuevos o mediante ingeniería inversa, mecanizados para cumplir o superar las especificaciones del fabricante original cuando se descontinúa una pieza original, algo común en las antiguas líneas de productos de Sharples.
¿Podemos alquilar una centrífuga mientras se repara nuestra unidad?
Sí. Sentrimax ofrece centrífugas de alquiler para mantener un proceso en funcionamiento durante una reparación, revisión o período de máxima demanda; lo ideal es coordinarlo antes del envío de la unidad, en lugar de después de que ya se necesite cubrir la necesidad.
Hable con un especialista en centrífugas.
Envíenos los detalles de la máquina y le enviaremos un informe de inspección y un presupuesto.