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

ABPart
Number
Screw
Coupling Dia
Pipe Sch 40LABDEAverage Weight Per Ft.
(Lbs./Ft.)
Screw
Dia.
PitchSizeC
Pipe OD
Std.
Length
Diameter TolerancePitch ToleranceFlight ThicknessComplete
Screw
Flight
Only
PlusMinusPlusMinusRootTip
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”42
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”52
6H#308•*1/4”1/8”63
6H#312•*3/8”3/16”75
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”73
9H#312•*3/8”3/16”107
9H#406•*2”2-1/2”2-7/8”3/16”3/16”3/32”93
9H#412•*1/4”3/8”3/16”126
9H#414•*7/16”7/32”137
12”12”12H#408•*2”2-1/2”2-7/8”11’ – 10”1/8”5/16”1”1/4”1/4”1/8”126
12H#412•*3/8”3/16”159
12H#508•*2-7/16”3”3-1/2”11’ – 9”1/4”1/8”146
12H#512•*3/8”3/16”178
12H#614•*3”3-1/2”4”11’ – 9”1/8”3/8”1”1/4”7/16”7/32”199
14”14”14H#508•*2-7/16”3”3-1/2”11’ – 9”1/8”5/16”1”1/4”1/4”1/8”147
14H#614•*3”3-1/2”4”11’ – 9”1/8”3/8”1”1/4”7/16”7/32”2211
16”16”16H#610•*3”3-1/2”4”11’ – 9”1/8”3/8”1-1/2”1/4”5/16”5/32”1910
16H#614•*4”4-1/2”7/16”7/32”2413

# 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

ABPart
Number
Screw
Coupling Dia
Pipe Sch 40LABDAverage Weight
Screw
Dia.
PitchSizeC
Pipe OD
Std.
Length
Diameter
Tolerance
Pitch
Tolerance
Flight
Thickness
Complete Screw
(Lbs./Ft.)
Flight Only
(Lbs./ea.)
PlusMinusPlusMinus
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 .61
6S#309•10 Ga .62
6S#312•3/16”72
6S#316•1/4”83
9”9”
9S#307•1-1/2”2”2-3/8”9’ – 10”1/16”3/16”1/2”1/4”12 Ga.63
9S#309•10 Ga.74
9S#312•3/16”95
9S#316•*1/4”116
9S#324•*3/8”149
9S#407•2”2-1/2”2-7/8”9’ – 10”1/16”3/16”1/2”1/4”12 Ga .93
9S#409•3/16”10 Ga .104
9S#412•3/16”3/16”115
9S#416•1/4”1/4”136
9S#424•*1/4”3/8”169
12”12”12S#409•*2”2-1/2”2-7/8”11’ – 10”1/8”5/16”3/4”1/4”10 Ga .116
12S#412•3/16”137
12S#416•*1/4”1514
12S#424•*3/8”1920
12S#509•2-7/16”3”3-1/2”11’ – 9”1/8”5/16”3/4”1/4”10 Ga .136
12S#512•3/16”157
12S#516•1/4”1710
12S#524•*3/8”2115
12S#612•3”3-1/2”4”11’ – 9”1/8”5/16”3/4”1/4”3/16”167
12S#616•5/16”1/4”1810
12S#624•*3/8”3/8”2213
14”14”14S#509•*2-7/16”3”3-1/2”11’ – 9”1/8”5/16”3/4”1/4”10 Ga.147
14S#512•3/16”1610
14S#516•*1/4”1913
14S#524•3/8”2320
14S#612•3”3-1/2”4”11’ – 9”1/8”5/16”3/4”1/4”3/16”1811
14S#616•5/16”1/4”2013
14S#624•*5/16”3/8”2520
16”16”16S#609•3”3-1/2”4”11’ – 9”1/8”3/8”3/4”1/4”10 Ga .1510
16S#612•3/8”3/16”1914
16S#616•3/8”1/4”2218
16S#624•*3/8”3/8”2726
16S#632•1/2”1/2”3335
18”18”18S#612•3”3-1/2”4”11’ – 9”3/16”3/8”3/4”1/2”3/16”2018
18S#616•3/8”1/4”2324
18S#624•*3/8”3/8”2935
18S#632•1/2”1/2”3646
18S#712•3-7/16”4”4-1/2”11’ – 8”3/16”3/8”3/4”1/2”3/16”2218
18S#716•3/8”1/4”2524
18S#724•3/8”3/8”3135
18S#732•1/2”1/2”3746
20”20”20S#612•3”3-1/2”4”11’ – 8”3/16”3/8”7/8”1/2”3/16”2120
20S#616•3/8”1/4”2528
20S#624•*3/8”3/8”3240
20S#632•1/2”1/2”3956
20S#712•3-7/16”4”4-1/2”11’ – 8”3/16”3/8”7/8”1/2”3/16”2320
20S#716•3/8”1/4”2628
20S#724•*3/8”3/8”3340
20S#732•1/2”1/2”4056
24”24”24S#712•3-7/16”4”4-1/2”11’ – 8”3/16”3/8”7/8”1/2”3/16”2538
24S#716•3/8”1/4”3042
24S#724•*3/8”3/8”3863
24S#732•1/2”1/2”4684
30”30”30S#816•3-15/16”5”5-9/16”11’ – 8”3/16”3/8”7/8”1/2”1/4”3854
30S#824 •3/8”3/8”5070
30S#832•1/2”1/2”5983
36”36”36S#916•4-7/16”6”6-5/8”11’ – 7”3/16”3/8”7/8”1/2”1/4”4763
36S#924•3/8”3/8”6080
36S#932•1/2”1/2”7398

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





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