KWS Manufacturing

Conveyor Screws Helicoid vs. Sectional

Helicoid and Sectional Screw Nomenclature Helicoid Screw and Flighting Sectional Screw and Flighting


Helicoid Flight Screw Conveyors

Helicoid Flight Screw Conveyors

Helicoid flighting is cold rolled from special steel into a continuous helix that produces a work-hardened, smoothly finished flighting surface. It is very cost-effective and provides superior strength with diameter, pitch and thickness closely controlled. Helicoid screws are manufactured by mounting helicoid flighting on a center pipe and fastening by intermittent welds. Continuous welding on the carrying side or both sides is also available. Internal collars are inserted in each end and plug welded to accommodate shafts. Screws are structurally reinforced at the ends by end lugs.

Sectional Flight Screw Conveyors

Sectional Flight Screw Conveyors

Sectional flighting is manufactured from steel plate and formed into a helix. Sectional flighting is available in heavier thicknesses than helicoid flighting and used in more abrasive applications. Sectional screws are manufactured by mounting sectional flighting on a center pipe, butt welding each flight together and fastening by intermittent welds. Continuous welding on the carrying side or both sides is also available. Internal collars are inserted in each end and plug welded to accommodate shafts. Screws can be structurally reinforced at the ends by end lugs.

Nomenclature

Helicoid Screw Nomenclature




Screw Conveyor Helicoid Screw and Flighting

Helicoid Screw and Flighting

A B Part
Number
Screw
Coupling Dia
Pipe Sch 40 L A B D E Average Weight Per Ft.
(Lbs./Ft.)
Screw
Dia.
Pitch Size C
Pipe OD
Std.
Length
Diameter Tolerance Pitch Tolerance Flight Thickness Complete
Screw
Flight
Only
Plus Minus Plus Minus Root Tip
4” 4” 4H#206•* 1” 1-1/4” 1-21/32” 9’ – 10-1/2” 1/16” 1/8” 1/2” 1/4” 3/16” 3/32” 4 2
6” 6” 6H#304•* 1-1/2” 2” 2-3/8” 9’ – 10” 1/16” 3/16” 1/2” 1/4” 1/8” 1/16” 5 2
6H#308•* 1/4” 1/8” 6 3
6H#312•* 3/8” 3/16” 7 5
9” 9” 9H#306•* 1-1/2” 2” 2-3/8” 9’ – 10” 1/16” 3/16” 3/4” 1/4” 3/16” 3/32” 7 3
9H#312•* 3/8” 3/16” 10 7
9H#406•* 2” 2-1/2” 2-7/8” 3/16” 3/16” 3/32” 9 3
9H#412•* 1/4” 3/8” 3/16” 12 6
9H#414•* 7/16” 7/32” 13 7
12” 12” 12H#408•* 2” 2-1/2” 2-7/8” 11’ – 10” 1/8” 5/16” 1” 1/4” 1/4” 1/8” 12 6
12H#412•* 3/8” 3/16” 15 9
12H#508•* 2-7/16” 3” 3-1/2” 11’ – 9” 1/4” 1/8” 14 6
12H#512•* 3/8” 3/16” 17 8
12H#614•* 3” 3-1/2” 4” 11’ – 9” 1/8” 3/8” 1” 1/4” 7/16” 7/32” 19 9
14” 14” 14H#508•* 2-7/16” 3” 3-1/2” 11’ – 9” 1/8” 5/16” 1” 1/4” 1/4” 1/8” 14 7
14H#614•* 3” 3-1/2” 4” 11’ – 9” 1/8” 3/8” 1” 1/4” 7/16” 7/32” 22 11
16” 16” 16H#610•* 3” 3-1/2” 4” 11’ – 9” 1/8” 3/8” 1-1/2” 1/4” 5/16” 5/32” 19 10
16H#614•* 4” 4-1/2” 7/16” 7/32” 24 13

# F = Flighting Only, Blank = Screw • R = Right Hand Flighting, L = Left Hand Flighting
* Only Right Hand Flighting is a KWS Stock Component




Screw Conveyor Sectional Screw and Flighting

Sectional Screw and Flighting

A B Part
Number
Screw
Coupling Dia
Pipe Sch 40 L A B D Average Weight
Screw
Dia.
Pitch Size C
Pipe OD
Std.
Length
Diameter
Tolerance
Pitch
Tolerance
Flight
Thickness
Complete Screw
(Lbs./Ft.)
Flight Only
(Lbs./ea.)
Plus Minus Plus Minus
4” NOT AVAILABLE
6” 6” 6S#307• 1-1/2” 2” 2-3/8” 9’ – 10” 1/16” 3/16” 3/8” 1/4” 12 Ga . 6 1
6S#309• 10 Ga . 6 2
6S#312• 3/16” 7 2
6S#316• 1/4” 8 3
9” 9”
9S#307• 1-1/2” 2” 2-3/8” 9’ – 10” 1/16” 3/16” 1/2” 1/4” 12 Ga. 6 3
9S#309• 10 Ga. 7 4
9S#312• 3/16” 9 5
9S#316•* 1/4” 11 6
9S#324•* 3/8” 14 9
9S#407• 2” 2-1/2” 2-7/8” 9’ – 10” 1/16” 3/16” 1/2” 1/4” 12 Ga . 9 3
9S#409• 3/16” 10 Ga . 10 4
9S#412• 3/16” 3/16” 11 5
9S#416• 1/4” 1/4” 13 6
9S#424•* 1/4” 3/8” 16 9
12” 12” 12S#409•* 2” 2-1/2” 2-7/8” 11’ – 10” 1/8” 5/16” 3/4” 1/4” 10 Ga . 11 6
12S#412• 3/16” 13 7
12S#416•* 1/4” 15 14
12S#424•* 3/8” 19 20
12S#509• 2-7/16” 3” 3-1/2” 11’ – 9” 1/8” 5/16” 3/4” 1/4” 10 Ga . 13 6
12S#512• 3/16” 15 7
12S#516• 1/4” 17 10
12S#524•* 3/8” 21 15
12S#612• 3” 3-1/2” 4” 11’ – 9” 1/8” 5/16” 3/4” 1/4” 3/16” 16 7
12S#616• 5/16” 1/4” 18 10
12S#624•* 3/8” 3/8” 22 13
14” 14” 14S#509•* 2-7/16” 3” 3-1/2” 11’ – 9” 1/8” 5/16” 3/4” 1/4” 10 Ga. 14 7
14S#512• 3/16” 16 10
14S#516•* 1/4” 19 13
14S#524• 3/8” 23 20
14S#612• 3” 3-1/2” 4” 11’ – 9” 1/8” 5/16” 3/4” 1/4” 3/16” 18 11
14S#616• 5/16” 1/4” 20 13
14S#624•* 5/16” 3/8” 25 20
16” 16” 16S#609• 3” 3-1/2” 4” 11’ – 9” 1/8” 3/8” 3/4” 1/4” 10 Ga . 15 10
16S#612• 3/8” 3/16” 19 14
16S#616• 3/8” 1/4” 22 18
16S#624•* 3/8” 3/8” 27 26
16S#632• 1/2” 1/2” 33 35
18” 18” 18S#612• 3” 3-1/2” 4” 11’ – 9” 3/16” 3/8” 3/4” 1/2” 3/16” 20 18
18S#616• 3/8” 1/4” 23 24
18S#624•* 3/8” 3/8” 29 35
18S#632• 1/2” 1/2” 36 46
18S#712• 3-7/16” 4” 4-1/2” 11’ – 8” 3/16” 3/8” 3/4” 1/2” 3/16” 22 18
18S#716• 3/8” 1/4” 25 24
18S#724• 3/8” 3/8” 31 35
18S#732• 1/2” 1/2” 37 46
20” 20” 20S#612• 3” 3-1/2” 4” 11’ – 8” 3/16” 3/8” 7/8” 1/2” 3/16” 21 20
20S#616• 3/8” 1/4” 25 28
20S#624•* 3/8” 3/8” 32 40
20S#632• 1/2” 1/2” 39 56
20S#712• 3-7/16” 4” 4-1/2” 11’ – 8” 3/16” 3/8” 7/8” 1/2” 3/16” 23 20
20S#716• 3/8” 1/4” 26 28
20S#724•* 3/8” 3/8” 33 40
20S#732• 1/2” 1/2” 40 56
24” 24” 24S#712• 3-7/16” 4” 4-1/2” 11’ – 8” 3/16” 3/8” 7/8” 1/2” 3/16” 25 38
24S#716• 3/8” 1/4” 30 42
24S#724•* 3/8” 3/8” 38 63
24S#732• 1/2” 1/2” 46 84
30” 30” 30S#816• 3-15/16” 5” 5-9/16” 11’ – 8” 3/16” 3/8” 7/8” 1/2” 1/4” 38 54
30S#824 • 3/8” 3/8” 50 70
30S#832• 1/2” 1/2” 59 83
36” 36” 36S#916• 4-7/16” 6” 6-5/8” 11’ – 7” 3/16” 3/8” 7/8” 1/2” 1/4” 47 63
36S#924• 3/8” 3/8” 60 80
36S#932• 1/2” 1/2” 73 98

# F = Flighting Only, Blank = Screw • R = Right Hand Flighting, L = Left Hand Flighting
* Only Right Hand Flighting is a KWS Stock Component