KWS Manufacturing

Screw Conveyor Covers

Covers are placed over the trough and fastened in place to provide a FIXED enclosure for the bulk material and to provide protection for personnel operating and maintaining the equipment. Standard cover lengths are 10-feet for 4, 6, and 9-inch diameter screw conveyors. Standard cover lengths are 12-feet for screw conveyors 12-inch and larger in diameter. KWS recommends bolting all covers on close centers to prevent access to the screw during operation.

Nomenclature

Covers - Nomenclature
Flanged Covers

Flanged

Flanged covers are manufactured with formed flanges on each side to provide extra rigidity. KWS recommends using flanged covers with U, flared and rectangular troughs because covers are held in place by the formed flanges on each side. KWS recommends bolting all covers on close centers to prevent access to the screw during operation.

Flat Covers

Flat

Flat covers are manufactured from thin gauge flat metal and do not have the rigidity of flanged covers. KWS does not recommend the use of flat covers because flat covers can easily slide off the top of a screw conveyor and cause injury to personnel. KWS recommends bolting all covers on close centers to prevent access to the screw during operation.

Semi-Flanged Covers

Semi-Flanged

Semi-flanged covers are manufactured with a slight formed flange on each side to provide some rigidity. KWS recommends flanged covers in place of semi-flanged covers in most applications. Cover sections are typically secured using spring clamps. KWS recommends bolting all covers on close centers to prevent access to the screw during operation.

Hip Roof Covers

Hip Roof

Hip roof or ridged covers are manufactured with a center peak for outdoor applications. Snow or rain runs off the hip roof cover similar to a roof on a house. Formed flanges on both sides of the cover provide extra rigidity. KWS recommends bolting all covers on close centers to prevent access to the screw during operation.

Shrouds

Shroud

Shrouds are manufactured to fit in U, flared or rectangular troughs and create a tubular cross section for screw feeders and steeply inclined screw conveyors. Standard covers can be used with shrouds. Shrouds are bolted on both sides of the trough for easy removal and include an integrated batten bar.


Covers

Covers Diagram

Screw
Dia.
Cover
Thk.
A •
(Approx)
B • C • Semi-Flanged Flanged Flat
Part Number Wt.
(Lbs.)
Part Number Wt.
(Lbs.)
Part Number Wt.
(Lbs.)
4” 14 Ga. 8-3/8” 8” 7-3/4” COV414#SF 2 COV414#FL* 3 COV414#F 2
6” 14 Ga. 10-7/8” 10-1/2” 9-3/4” COV614#SF 3 COV614#FL* 4 COV614#F 2
9” 14 Ga.
12 Ga.
14-3/8” 14” 13-1/4” COV914#SF
COV912#SF
4
5
COV914#FL*
COV912#FL
5
7
COV914#F
COV912#F
3
6
12” 14 Ga.
12 Ga.
18-1/4” 18” 17-1/4” COV1214#SF
COV1212#SF
5
7
COV1214#FL*
COV1212#FL
6
8
COV1214#F
COV1212#F
5
8
14” 14 Ga.
12 Ga.
20-1/4” 20” 19-1/4” COV1414#SF
COV1412#SF
6
8
COV1414#FL*
COV1412#FL
6
9
COV1414#F
COV1412#F
5
9
16” 14 Ga.
12 Ga.
22-1/4” 22” 21-1/4” COV1614#SF
COV1612#SF
6
9
COV1614#FL*
COV1612#FL
7
10
COV1614#F
COV1612#F
6
10
18” 12 Ga.
10 Ga.
25-1/4” 25” 24-1/4” COV1812#SF
COV1810#SF
10
14
COV1812#FL
COV1810#FL*
11
14
COV1812#F
COV1810#F
6
11
20” 12 Ga.
10 Ga.
27-1/4” 27” 26-1/4” COV2012#SF
COV2010#SF
11
15
COV2012#FL
COV2010#FL*
12
15
COV2012#F
COV2010#F
7
12
24” 12 Ga.
10 Ga.
31-1/4” 31” 30-1/4” COV2412#SF
COV2410#SF
12
17
COV2412#FL
COV2410#FL*
14
18
COV2412#F
COV2410#F
11
14
30” 10 Ga. 39-3/8” 39” 38-1/2” COV3010#SF 21 COV3010#FL 22 COV3010#F 21
36” 3/16” 45-3/8” 45” 44-1/2” COV36316#SF 32 COV36316#FL 33 COV36316#F 32

* KWS Stock Component (U-Troughs only)    • Dimensions will change for flared troughs
# Trough Style: U = U-Trough/Rectangular, F = Flared

Covers Diagram
Screw
Dia.
Cover
Thk.
A • B • C • D Hip Roof Shroud
Part Number Wt. /Ft.
(Lbs.)
Part Number Wt. /Ft.
(Lbs.)
4” 14 Ga. 8” 5” 3-5/8” 8” COV414#HR 2 N/A  
6” 14 Ga.
12 Ga.
10-1/2” 7” 4-1/2” 12” COV614#HR
COV612#HR
4
4
N/A
COV612#SH*
8
9” 14 Ga.
12 Ga.
3/16”
14” 10” 6-1/8” 18” COV914#HR
COV912#HR
X
4
6
X
N/A
N/A
COV9316#SH*
23
12” 14 Ga.
10 Ga
3/16”
18” 13” 7-3/4” 24” COV1214#HR
COV1210#HR
X
5
10
X
N/A
N/A
COV12316#SH*
41
14” 14 Ga.
10 Ga.
3/16”
20” 15” 9-1/4” 28” COV1414#HR
COV1410#HR
X
6
11
X
N/A
N/A
COV14316#SH*
60
16” 14 Ga.
10 Ga.
3/16”
22” 17” 10-5/8” 32” COV1614#HR
COV1610#HR
X
7
12
X
N/A
N/A
COV16316#SH*
78
18” 12 Ga.
10 Ga.
3/16”
25” 19” 12-1/8” 36” COV1812#HR
COV1810#HR
X
10
12
X
N/A
N/A
COV18316#SH*
98
20” 12 Ga.
10 Ga.
3/16”
27” 21” 13-1/2” 40” COV2012#HR
COV2010#HR
X
11
15
X
N/A
N/A
COV20316#SH*
114
24” 12 Ga.
10 Ga.
3/16”
31” 25” 16-1/2” 48” COV2412#HR
COV2410#HR
X
14
19
X
N/A
N/A
COV24316#SH*
175
30” 10 Ga.
3/16”
1/4”
39” 31” 20-1/4” 60” COV3010#HR X
X
25 N/A
N/A
COV30250#SH
290
36” 3/16”
1/4”
45” 37” 24-3/8” 72” COV36316#HR
X
36 N/A
COV36250#SH
330

* KWS Stock Component (U-Troughs only)      • Dimensions will change for flared troughs
# Trough Style: U = U-Trough/Rectangular, F = Flared