After Filters for Cyclone Dust Collectors

After Filters for Cyclone Dust Collectors

The Filters for Cyclones
Sternvent after filters capture the fine dust that is not separated from the air stream of a cyclone dust collector. Simple and efficient, the after filters allow return of filtered air to the building or to comply with EPA requirement when exhausting the air outdoors.

Sizes
Sternvent offers 3 sizes, 6 00-6,000 cfm, of after filters in two styles; 55 gallon drum & dust chamber. Available for indoor installation or outdoors, when ordered with weatherproof enclosure.
Filters are available 11-1/2” 05 5” diameter in polyester felt or cotton sateen. Ceiling hung and floor-mounted units are available.

Principle of Operation
The dirty air stream enters the plenum horizontally; the filters hang from the plenum. The air and dust go down, inside of the filter bags. The dust is stored in the 11-1/2 diameter filters. The 5” diameter filters are tubes that allow the dust to be deposited in the airtight 55 gallon drum or chamber.
Some models are available with a motorized shaker to loosen the dust particles from the filters, to restore suction. Filtration efficiency is typically 99.9%. (For production operations, additional filter media is suggested. For sticky or agglomerating dust, a pulse jet style dusty collector should be used instead of the after filter.)

Common Applications Options
Woodworking Alternate filter media
Metalworking 55 gallon dust storage
Plastics Dust chamber storage
Paper (not trim) Motorized Shaker
Support legs
Features Benefits
Improves cyclone efficiency Permits air to be recirculated
Permits air to be recirculated Saves energy
Easy to maintain Cost effective

11 1/2″ Diameter After Filter – Open Style

MODEL

FILTER

AREA

(SQ. FT)

AIR FLOW (CFM)
USE WITH CYCLONE HP

APPROX. DIMENSIONS

(INCH) *

SHIPPING WEIGHT (LBS)
H
W
D
AFO2235 35 1000 2 72 23 23 50
AFO12070 70 1000-2000 3.5 90 30 30 115
AFO12100 100 2000-3000 7.5 120 30 30 115
AFO12200 200 3000-4000 10, 15 120 60 30 140
AFO12450 450 5000-8000 20, 25, 30 120 90 40 260
AFO12600 600 8000-10000 40, 50 120 120 40 350
AFO12900 900 8000-12000 40, 50 120 180 40 500

*Dust stored in zipper bottom bags for indoor installation. Ceiling hung.

11 1/2″ Diameter After Filter – Enclosed Style

MODEL

FILTER

AREA

(SQ. FT)

AIR FLOW (CFM)
USE WITH CYCLONE HP

APPROX. DIMENSIONS

(INCH) *

SHIPPING WEIGHT (LBS)
H
W
D
AFE12070 70 1000-2000 3.5 120 30 30 400
AFE12100 100 2000-3000 7.5 130 30 30 400
AFE12200 200 3000-4000 10, 15 150 60 30 700

*Dust stored in zipper bottom bags for outdoor installation. Enclosure is not suitable for ducting back to the building.

5″ Diameter After Filter – Open & Enclosed Style

MODEL

FILTER

AREA

(SQ. FT)

AIR FLOW (CFM)
USE WITH CYCLONE HP

APPROX. DIMENSIONS

(INCH) *

SHIPPING WEIGHT (LBS)
H
W
D
AFAO5272D

AFAE5272D

272

272

3000-4000 10, 15 142 34 52 1200
AFAO5383

AFAE5373

AFAO5383D

AFAE5373D

383

373

383

373

2000-4000 5, 7.5, 10, 15 166 34 52 1400
AFAO5612

AFAE5612

AFAO5612D

AFAE5612D

612

612

612

612

3000-8000 10, 15, 20, 25, 30 185 54 54 2300
AFAE5842D 842 5000-8000 20, 25, 30 185 73 55 2800

*Dust stored in sweep out chamber or 55 gallon drum for models with D suffix. Enclosed models are for outdoors and are suitable for ducting each to building.

Model: AFA05612(Cyclone Outdoors)
Application: Plastic Machining
Airflow: 5,000 CFM
Location: Nyack, NY

Model: AFO12300(Cyclones not shown)
Application: Steel Grinding
Airflow: 4,000 CFM
Location: Reading, PA

Model: AFAE5373 & CYD3010
Application: Woodworking(School)
Airflow: 3,500 CFM
Location: Media, PA

Model: AFAE5612D & CYA3625
Application: Woodworking(School)
Airflow: 7,000 CFM
Location: Brownstown, PA

Model: AFAE5373 & CYA2407
Application: Woodworking(School)
Airflow: 2,800 CFM
Location: Red Lion, PA

Model: AFAE5612 & CYHR3620
Application: Woodworking(Maintenance)
Airflow: 6,000 CFM
Location: York, PA

Peter Levitt: plevitt@sternvent.com; fgiliberti@sternvent.com

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Ph: 908-688-0807