High Pressure Hydra-Cell Coolant Pumps
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The use of high-pressure coolant for machine tool operations has increased significantly in recent years because of the added benefits it provides in the removal of abrasive chips and lubrication in machine tool operation as well as the cleaning/cooling of grinding wheels. The sealless design of the Hydra-Cell high pressure coolant pump is the "heart" of a modern high pressure coolant pump system due to its inherently reliable design.
The Problem with Centrifugal Pumps
High-pressure multistage centrifugal pumps require the fluid to be extremely clean (often <25 microns) because the internal impellers have microscopic clearances. Even minor filtration failure leads to "scouring," which drops your pressure and eventually kills the pump.
The Hydra-Cell Solution
Because Hydra-Cell is a positive displacement pump with no internal "rubbing" parts, it maintains its efficiency and pressure even as components begin to age or filtration fluctuates.
The Seal-less Advantage: Engineered for Reliability
Unlike multistage centrifugal pumps that rely on tight clearances and mechanical seals, or piston pumps that use packing and plungers, Hydra-Cell pumps are seal-less. This fundamental design difference provides three primary reliability advantages:
- Elimination of Leak Paths: No mechanical seals or packing means no catastrophic leaks when handling abrasive CNC fines.
- Dry-Run Capability: Hydra-Cell pumps can run dry indefinitely without damage, whereas centrifugal pumps will seize or suffer seal failure within minutes.
- Abrasive Tolerance: The diaphragms act as a barrier, protecting the pump's hydraulic end from the dirty coolant that destroys the close tolerances of centrifugal stages.
Hydra-Cell
high pressure coolant pumps have benefited a range of cnc machining applications including boring,
deep-hole drilling, EDM machining, grinding, milling, multi-function
machining, stand-alone systems, and chip removal. Our high pressure
coolant pumps feature a
sealless design and will provide output pressures from 30 to 2500
PSI. Screw, centrifugal, gear
and multi-piston pumps are all sensitive to reclaimed fluids and
thus prone to leaking - there are no other high pressure coolant pumps
having the rugged construction, versatility and performance of sealless
Hydra-Cell high pressure coolant pumps!
Run Dry Capable
While you would never want to operate your tool "dry", if your filtration
system becomes clogged or for some reason coolant isn't available,
Hydra-Cell high pressure coolant pumps will not become damaged.
Conventional pumps often require level or flow sensors to help avoid running
dry because they are dependent upon the fluid pumped for seal lubrication.
Therefore incorporating Hydra-Cell high pressure coolant pumps into your
system simplifies the overall design. Likewise intermittent
cavitation, perhaps from coolant foaming or a clogged filter, will not
damage a Hydra-Cell pump. Our high pressure coolant pumps also
self-prime, eliminating costly errors by operators and maintenance
personnel.
Controlled Delivery at High Pressure = Predictable, Optimal Results
Since flow rate is dependent
upon the pump speed and not the discharge
pressure, Hydra-Cell high pressure coolant pumps deliver precise, accurate flow
across a range of tooling flow rate requirements. Whether pumping thin
water-based emulsions or thick cutting-oil coolants, Hydra-Cell high
pressure coolant pumps deliver the flow rate with no
dynamic seals to "leak pressure". Consistent high pressure with
controlled flow makes it easier for the pump to remove tool
blockages in support of predictable tool life and work-piece
quality.
Minimal Filtration to Protect the Pump
Hydra-Cell high pressure coolant pumps have no mechanical seals or tight tolerances that need
protection by fine filtration. Hydra-Cell's can handle particles up to
800 microns in size (depending on model) and tolerate fines up to 9
hardness on the Mohs scale. This eliminates the expense of 10-micron
filters needed for gear and screw style pumps. Many
modern coolants have additives >25 microns in size meant to improve their
performance, thus over-filtration to protect your pump system may reduce the
performance of your coolant. Hydra-Cell high pressure coolant pumps
let you size filtration based upon other system components such as rotary
unions or tooling and the coarser filtration requirements often result in
reduced filter media costs because the media is less expensive and requires
less frequent changes.
Low Power Consumption - 85% to 90% Energy Efficiency
With no "leaking" dynamic seals, energy efficiency is independent of
coolant technology in the Hydra-Cell pump. Positive displacement
pumping action with our sealless design minimize energy losses even when
pumping water-based emulsion coolants. In addition, the lower
horsepower
requirement of Hydra-Cell high pressure coolant pumps achieve the same performance but with
greater energy efficiency and less power consumption.
See a video highlighting
the surprising capabilities of the Hydra-Cell Pump!
Hydra-Cell High Pressure Coolant Pump Advantages
• Accurate flow control maintains a constant rate of pressure for better performance
• Operational efficiencies reduce energy costs
• Sealless design can tolerate solids up to 800 microns in size depending on the pump model
• Handles abrasive fines and metal particles enabling operation without fine filtration
• Any type of coolant can be processed with no loss of efficiency
• Can run dry without damage (or additional maintenance) in case of accident or operator error
• Tolerates non-ideal operation conditions
• Minimizes maintenance and downtime because there are no seals, packing, or cups to replace
Reliability Comparison: Coolant & Fluid Handling
| Coolant / Fluid Type | Traditional Pump Limitations (Centrifugal/Piston) | The Hydra-Cell Reliability Advantage |
|---|---|---|
| Dirty / Recycled Coolant | Abrasive particles (fines) scour impellers and destroy mechanical seals or piston packing. | Seal-less design and horizontal check valves easily handle particulates up to 800 microns. |
| Synthetic & Semi-Synthetic Fluids | Poor lubricating properties cause premature wear of dynamic seals immersed in the coolant. | Pumping action is strictly mechanical and does not require fluid lubricity. |
| Non-Lubricating (EDM/De-ionized) | Chemically aggressive and non-lubricating fluids cause rapid seal leakage and shaft wear. | Seal-less design and diverse material options enable handling of aggressive fluids without wear. |