Continuous bypass cleaning.
Visibly less tramp oil in the sump.
A machining workshop connected an SMT500C to a machining-centre coolant sump for continuous oil removal in an independent bypass circuit. Photographs taken before, during and after treatment show visibly less floating oil after treatment. The treated coolant returns to the original sump for reuse.
Case Background
Several machining centres in the workshop operate for extended periods. Slideway oil, hydraulic oil, lubricating oil and contaminants carried in by workpieces gradually enter the coolant sumps beneath the machines.
As tramp oil and solids accumulate, fluid management and manual cleaning become more demanding. The workshop needed a compact system for continuous oil removal beside the machines.
The Challenge
Space beneath a machining centre is limited, and floating oil continues to accumulate during machining. Manual skimming and sump cleaning take time and make continuous oil control difficult.
The workshop needed a compact, easy-to-connect coolant purification solution that could treat a selected sump in an independent bypass while retaining the machine’s existing fluid supply system.
The Solution: SMT500C Coolant Purifier
An SMT500C coolant purifier was positioned beside the machining centre and connected to its sump with flexible hoses. The unit draws oil-rich coolant from near the surface, passes it through pre-filtration and physical coalescing separation, discharges the separated oil into a collection container and returns treated coolant to the sump by gravity.
The coalescing medium helps small oil droplets merge, grow and rise, allowing floating oil and coalescible dispersed droplets to be separated. The standard basket filter intercepts larger chips and solid particles; an optional magnetic filtration unit can be added for fine ferromagnetic particles.
Field results: continuous removal of floating oil from coolant
The field photographs below show the liquid surface before, during and after SMT500C bypass treatment. Actual results and the time required depend on tank volume, floating-oil load, fluid properties and operating time.
Results
The field photographs show a visible reduction in the floating oil that previously covered the sump surface after SMT500C bypass treatment. The unit continuously treats the oil-rich surface layer and returns treated coolant to the machining-centre sump.
The field record primarily documents changes at the liquid surface. Particle cleanliness, microbial levels and coolant service life require separate measurements and operating records; they cannot be established from surface photographs alone.
Advantages
The SMT500C coolant purifier is suitable for installation beside machining centres, CNC machines and machining lines to treat contamination in individual machines or local coolant sumps.
Application Benefits
- Continuous removal of floating oil and coalescible dispersed droplets
- Independent bypass operation with treated coolant returned to the original sump
- Compact mobile unit for use across multiple tanks
- Standard pre-filtration for larger chips and solid particles
- Additional filtration selected for the particle type and cleanliness target
Conclusion
Continuous bypass oil removal helps control the accumulation of tramp oil in machining-centre sumps. The compact mobile SMT500C can operate beside a machine and be moved between several tanks.
Configuration and operating schedules should reflect sump volume, oil load, fluid properties and available operating time. Particle filtration and microbial control should use technologies suited to the actual treatment requirements.
Compact mobile bypass treatment for floating oil and coalescible dispersed droplets, with pre-filtration for larger solids.
Expandable mobile bypass treatment, configured to suit the oil load and particle-removal requirements.
Need help choosing a coolant purifier for your machining centres?
Please share the number of machines, coolant sump volume, main contaminants (such as tramp oil, metal chips and suspended solids) and treatment targets. Our China engineering team can recommend an SMT500C, SMT500V or combined purification solution for your operating conditions.