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.

Fine particulate oil and coolant filtration for cutting & grinding applications.

Remove fine particulate from spent oil in honing and electronic discharge machining, tungsten carbide tool, and steel ball grinding applications with a PRAB Candle Filter.

PRAB’s Candle Filter improves coolant recycling systems and fluid reclamation by using media in a long cylinder that houses more than 10,000 thin membrane wafers. These membranes effectively and consistently capture grinding swarf down to 1-3 micron and operate reliably under large production runs for improving fluid waste management.

Advantages of the candle filter include:

  • Improves coolant recycling and fluid reclamation
  • Filters operate with virtually no downtime for maintenance
  • Performs reliably under large production runs
  • 10,000 thin membrane wafers capture grinding swarf down to 1-3 micron
  • Self-cleaning air pressure backflush cycle reduces labor costs and increases process efficiency
  • Swarf is purged into an external receptacle for easy collection and recycling in coolant filtration

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

Top Content

Product Brochure: PRAB Builds Equipment for the Toughest Jobs in Manufacturing and Metalworking

“We get $0.17 per pound more for our briquetted material over loose chips.”– Jack Rovan, Martin-Baker Plant Manufacturing ManagerProven Results Achieved for PRAB Customers: Documented reduction of scrap volume by as much as 90% Increased scrap value up to 25% Reclaimed up to 99% of cutting fluids “We have seen around […]

May 21, 2019
White Paper: Extending Tool Life In Metalworking Operations

Automated fluid recycling systems maximize the service life of tools while lowering operating costs.By Mike Hook, Sales & Marketing Director, PRAB Introduction The metalworking industry, like all manufacturing operations, must contest with several market factors that are difficult if not impossible to control: Escalating materials costs spurred by policy decisions, transportation costs, raw materials […]

August 1, 2019
Product Brochure: PRAB Fluid Filtration Solutions

Product Selection Chart Model # Flow Filtering Efficiency Application Tramp Oil Separator 3-150 gpm (11-568 lph)   Coolant Guardian Coolant Recycling Systems 90-1,500 gph (341-5,678 lph)   Coolant High Pressure Coolant Filters     Coolant Magnetic Separator 5-265 gph (19-1,003 lph) 50-100 micron Coolant Paper Bed Filter 5-250 gpm (19-946pm) 15-50 micron Coolant/Wastewater Magnetic Separator & […]

August 30, 2019