Compliance
PRAB Candle Filters contain over 10,000 membrane wafers that consistently capture grinding swarf down to 2-3 micron to accommodate recycle and reuse goals.
Health & Safety
Coolant filtration management improves housekeeping and employee safety.
Low Maintenance
Candle filters are self-cleaning with air driven backwash systems to automatically clear filter of dirt and debris eliminating the need for manual cleaning.
Value
Candle filters have a small footprint and are used in coolant filtration for EDM, tungsten carbide tool grinding, honing, and bearing grinding applications with replaceable filter elements that last several years.

Efficient Fine Particulate Filtration for Cutting & Grinding Applications

Enhance the performance of your cutting and grinding operations with the PRAB Candle Filter. Designed for precision filtration, this system effectively removes fine particulate from spent oil and coolants in honing, electronic discharge machining (EDM), tungsten carbide tool grinding, and steel ball grinding.

The PRAB Candle Filter features a sophisticated design that uses media housed in a long cylinder with over 10,000 thin membrane wafers. These wafers reliably capture grinding swarf as small as 1–3 microns, ensuring consistent filtration performance, even during high-production operations. With its advanced self-cleaning capabilities, the Candle Filter optimizes fluid reclamation and coolant recycling, reducing waste and enhancing process efficiency.

Key Benefits of the PRAB Candle Filter:

  • Superior Filtration Performance: Captures fine particulates down to 1–3 microns, ensuring cleaner fluids and extended coolant life.
  • Minimal Downtime: Operates virtually without maintenance interruptions, keeping production on track.
  • Reliable Under High Production Demands: Designed to handle large production runs without compromising performance.
  • Self-Cleaning Efficiency: Features an air pressure backflush cycle that reduces labor costs and maximizes operational efficiency.
  • Easy Swarf Management: Automatically purges captured swarf into an external receptacle, simplifying collection and recycling.

Integrating the PRAB Candle Filter into your fluid management system can achieve cleaner cutting and grinding fluids, lower operational costs, and a more sustainable production process.

Applicable Scope:

  • Tungsten carbide tool grinder
  • Electronic discharge machining
  • Honing
  • Ball bearing grinding

Maximum permissible oil viscosity:

  • Grinding – under 45 SUS (100°F, 37.8°C)
  • EDM – under 37 SUS (73°F, 33.8°C)
  • Filter precision: Down to 1-3 micron
Candle Filter Media | Prab.com

Candle Filter Specifications

Model
No. of
Vessels
L
W
H
Dirty
Inlet (h)
Tank Vol
(Gal)
Flow Rate
GPM

CF4T-1R

1

52.8

41.8

60.8

11.8

170

13

CF4T-1

1

52.8

41.8

60.8

11.8

170

18

CFT-1

1

52.8

48

60.8

15.8

210

20

CFT-1S

1

70.9

48

60.8

15.8

285

30

CF7T-1

1

60

60

60.8

15.8

285

42

CF7T-1S

1

60

60

60.8

15.8

285

56

CFT-2

2

70.8

48

60.8

15.8

285

42

CFT-3

3

96

48

60.8

15.8

380

60

CFT-4

4

120

48

60.8

15.8

485

80

Chiller Specifications

Model
Chiller
(TON)
Chiller Dimension
L (in) x W (in) x H (in)

CF4T-1R

1

21.6 x 18.9 x 40.9

CF4T-1

2

21.6 x 18.9 x 40.9

CFT-1

2

27.4 x 19.4 x 46.3

CFT-1S

3

23.6 x 36.2 x 49.0

CF7T-1

3

23.6 x 36.2 x 49.0

CF7T-1S

4

43.5 x 27.8 x 55.0

CFT-2

3

23.6 x 36.2 x 49.0

CFT-3

4

43.5 x 27.8 x 55.0

CFT-4

5

43.5 x 27.8 x 55.0

Recommended Grinding Oil

Model
Viscosity
Flash

Crown Cut 850

43 SUS@ 100°F

266°F

Sintogrind TT

45 SUS@ 100°F

320°F

Castrol 488 CF

45 SUS@ 100°F

230°F

Castrol Honilo 980

43 SUS@ 100°F

250°F

Omni-Grind V

37 SUS@ 100°F

239°F

Norpar 15

33 SUS@ 100°F

240°F

Emal-O-Grind 168/3

35 SUS@ 100°F

266°F

Recommended EDM Oil

Model
Viscosity
Flash

Castrol SE 180

37 SUS@ 100°F

212°F

US-1

36 SUS@ 70°F

240°F

US-2

32 SUS@ 77°F

165°F

US-3

34 SUS@ 77°F

210°F

Interlyte

37 SUS@ 72°F

220°F

Iono Plus

37 SUS@ 77°F

225°F

Commonwealth 259T

37 SUS@ 72°F

259°F

Commonwealth 244

7 SUS@ 72°F

244°F

PRAB completes comprehensive sample testing to establish an accurate understanding of the unique characteristics of your mixed solution and its industrial applications. This test determines the correct centrifuge system design and capacity to optimizes the filtration process within your facility.

To receive a free test contact us today at (800) 968-7722.

Guardian Coolant Recycling Systems | Prab.com
To discuss your custom application

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