Screw Conveyor Troughs
U-Troughs Flared Troughs Tubular Troughs Rectangular TroughsKWS designs and manufactures many different types of troughs and tubular housings for every bulk material handling application. All troughs and tubular housings are available in carbon steel construction as well as abrasion-resistant steels, hot-dipped galvanized and stainless steel. KWS can manufacture troughs and tubular housings out of any commercially available metal. Plate end flanges are CNC cut and jig-welded to ensure exact alignment with adjacent trough sections. KWS recommends supporting every trough section with flanged feet or saddles.
Nomenclature
U-Troughs
U-troughs are the most common type of trough for screw conveyors and screw feeders. The U–trough design is simple, economical and provides access for maintenance.
Angle Flange
Angle flange troughs are manufactured with structural angle top flanges to provide extra rigidity. Stock angle flange troughs utilize thinner gauges of metal and are typically used in light and medium duty applications.
Formed Flange
Formed flange troughs are manufactured with formed top flanges. Stock formed flange troughs utilize heavier gauges of steel and are typically used for medium to heavy duty applications. Formed flange troughs are dust-tight.
Double Formed Flange
Double formed flange troughs are manufactured with two formed top flanges for added rigidity. Double formed flange troughs provide an effective dust-tight seal when used with flanged covers and a compressible gasket material.
Formed Channel
Formed channel troughs are manufactured with two formed side channels to provide rigidity for spanning long distances without intermediate supports. The lower, curved trough section is typically bolted to the channel sides and can be replaced when worn.
Drop Bottom
Drop bottom troughs are manufactured with a removable or hinged lower curved trough section. Drop bottom troughs allow access to the screw for clean out or maintenance purposes. Removable drop bottom troughs are bolted on close spacing on both sides of the trough. Hinged drop bottom troughs are hinged on one side with quick-release clamps and safety bolts on the other side.
Jacketed
Jacketed troughs are manufactured with an outer jacket that is seal-welded to the trough. Bulk materials can be cooled, heated or maintained at a constant temperature with jacketed troughs. Heat transfer mediums such as water, hot oil or steam flow through the jacketed trough to provide heat transfer. ASME coded troughs are available from KWS.
Flared Trough
Flared troughs are manufactured with formed top flanges. The top opening of a flared trough is wider than a U-trough to allow sticky or viscous bulk materials to enter the trough easier. Many mixing screw conveyors utilize flared troughs because the additional space above the screw creates more room for bulk materials to be mixed.
Tubular Housings
Tubular housings are typically used when a screw conveyor is inclined over 15-degrees. Conveying efficiency is greatly improved with tubular housings because bulk materials are contained and fall back is reduced. Tubular housings are also used for weather-tight applications and used to hold internal pressure in a screw conveyor. ASME coded tubular housings are available from KWS.
Non-Split
Non-split tubular housings are manufactured by rolling a cylindrical tube and continuously welding at the seam or cutting down spouting or pipe to length.
Split
Split tubular housings are manufactured by rolling two halves and forming flanges on each side. The two halves are then bolted together to form a rigid assembly.
Rectangular Troughs
Rectangular troughs are typically used in applications for conveying abrasive bulk materials. The space between the screw and rectangular trough fills with the bulk material being conveyed forming a static layer. The bulk material being conveyed slides over the static material and eliminates wear on the rectangular trough. Rectangular troughs are also beneficial when utilizing certain abrasion resistant steels such as AR-400, AR-500 and chromium carbide steel due to their low formability.
Angle Flange
Angle flange rectangular troughs are manufactured with structural angle top flanges to provide extra rigidity similar to U-troughs.
Formed Flange
Formed flange rectangular troughs are manufactured with formed angle top flanges similar to U-troughs.
Angle Flange – Top & Bottom
Angle flange – top & bottom rectangular troughs are manufactured with structural angles on both the top and bottom flanges. Some high strength steel plate materials such as AR-400 cannot be formed at 90-degree angles and angle flanges are required.
Formed Flange – Top & Bottom
Formed flange – top & bottom rectangular troughs are manufactured with formed angles on both the top and bottom flanges.
U-Troughs
Screw Dia. |
Trough Thk. | A | B | C | D | E | F | G | Angle Flange | Formed Flange | Double Formed Flange | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Part Number | Wt. Per ft. (Lbs.) | Part Number | Wt. Per ft. (Lbs.) | Part Number | Wt. Per ft. (Lbs.) | |||||||||
4” | 14 Ga . 12 Ga . 10 Ga . |
5” | 3-5/8” | 1” | 7-1/4” | 1-1/4” | 7/8” | 7-1/2” | TUA414* TUA412 TUA410 |
7 9 12 |
TUF414 TUF412 TUF410 |
5 7 9 |
TUDF414 TUDF412 TUDF410 |
6 9 11 |
6” | 14 Ga . 12 Ga . 10 Ga . 3/16” 1/4” |
7” | 4-1/2” | 1-1/4” | 9-3/4” 9-3/4” 9-3/4” 9-7/8” 10” |
1-3/8” | 7/8” 7/8” 7/8” 1-5/8” 1-3/4” |
9-3/4” | TUA614* TUA612 TUA610 TUA6316 TUA6250 |
9 13 16 22 30 |
TUF614 TUF612 TUF610 TUF6316* TUF6250 |
7 10 13 19 28 |
TUDF614 TUDF612 TUDF610 TUDF6316 TUDF6250 |
8 12 15 21 30 |
9” | 14 Ga . 12 Ga . 10 Ga . 3/16” 1/4” |
10” | 6-1/8” | 1-1/2” | 13-1/4” 13-1/4” 13-1/4” 13-3/8” 13-1/2” |
1-11/16” | 7/8” 7/8” 7/8” 1-5/8” 1-3/4” |
13-3/8” | TUA914* TUA912 TUA910* TUA9316 TUA9250 |
12 16 21 27 39 |
TUF914 TUF912 TUF910 TUF9316* TUF9250 |
10 13 17 22 34 |
TUDF914 TUDF912 TUDF910 TUDF9316 TUDF9250 |
11 15 20 26 38 |
12” | 12 Ga . 10 Ga . 3/16” 1/4” |
13” | 7-3/4” | 2” | 17-1/4” 17-1/4” 17-3/8” 17-1/2” |
2-1/8” | 7/8” 7/8” 1-5/8” 1-3/4” |
17-1/4” | TUA1212* TUA1210 TUA12316 TUA12250 |
21 27 35 46 |
TUF1212 TUF1210 TUF12316* TUF12250 |
17 22 29 38 |
TUDF1212 TUDF1210 TUDF12316 TUDF12250 |
19 25 33 44 |
14” | 12 Ga . 10 Ga . 3/16” 1/4” |
15” | 9-1/4” | 2” | 19-1/4” 19-1/4” 19-3/8” 19-1/2” |
2-1/8” | 7/8” 7/8” 1-5/8” 1-3/4” |
19-1/4” | TUA1412* TUA1410 TUA14316 TUA14250 |
23 30 39 52 |
TUF1412 TUF1410 TUF14316* TUF14250 |
19 25 33 44 |
TUDF1412 TUDF1410 TUDF14316 TUDF14250 |
21 28 37 50 |
16” | 12 Ga . 10 Ga . 3/16” 1/4” |
17” | 10-5/8” | 2” | 21-1/4” 21-1/4” 21-3/8” 21-1/2” |
2-1/8” | 7/8” 7/8” 1-5/8” 1-3/4” |
21-1/4” | TUA1612* TUA1610 TUA16316 TUA16250 |
26 33 43 57 |
TUF1612 TUF1610 TUF16316* TUF16250 |
22 28 37 49 |
TUDF1612 TUDF1610 TUDF16316 TUDF16250 |
24 31 41 55 |
18” | 10 Ga . 3/16” 1/4” |
19” | 12-1/8” | 2-1/2” | 24-1/4” 24-3/8” 24-1/2” |
2-5/8” | 7/8” 1-5/8” 1-3/4” |
24-1/4” | TUA1810* TUA18316 TUA18250 |
38 50 65 |
TUF1810 TUF18316 TUF18250 |
32 42 55 |
TUDF1810 TUDF18316 TUDF18250 |
35 46 61 |
20” | 3/16” 1/4” |
21” | 13-1/2” | 2-1/2” | 26-1/2” 26-1/2” |
2-5/8” | 1-5/8” 1-3/4” |
26-1/4” | TUA20316* TUA20250 |
54 71 |
TUF20316 TUF20250 |
46 61 |
TUDF20316 TUDF20250 |
50 67 |
24” | 3/16” 1/4” |
25” | 16-1/2” | 2-1/2” | 30-3/8” 30-1/2” |
2-5/8” | 1-5/8” 1-3/4” |
30-1/4” | TUA24316* TUA24250 |
63 83 |
TUF24316 TUF24250 |
55 73 |
TUDF24316 TUDF24250 |
59 79 |
30” | 3/8” 1/2” |
31” | 19-1/2” | 3” | 37-3/4” 38” |
3-1/8” X | 1-3/4” X | 37-1/4” X | TUA30375 TUA30500 |
148 198 |
TUF30375 X | 134 X |
TUDF30375 X | 142 X |
36” | 3/8” 1/2” |
37” | 22-1/2” | 3” | 43-3/4” 44” |
3-1/2” X | 1-3/4” X | 44” X | TUA36375 TUA36500 |
170 227 |
TUF36375 X | 156 X |
TUDF36375 X | 164 X |
* KWS Stock Component (In Carbon Steel only)
Screw Dia. |
Trough Thk. | A | B | C | D | Formed Chanel Trough | Drop Bottom Trough | Jacketed Trough | |||
---|---|---|---|---|---|---|---|---|---|---|---|
Part Number | Wt. Per ft. (Lbs.) |
Part Number | Wt. Per ft. (Lbs.) † |
Part Number | Wt. Per ft. (Lbs.)• |
||||||
4” | NOT AVAILABLE | ||||||||||
6” | 14 Ga. 12 Ga. 10 Ga. 3/16” 1/4” |
7” | 4-1/2” | 1-1/4” | 9-3/4” 9-3/4” 9-3/4” 9-7/8” 10” |
TUFC614 TUFC612 TUFC610 TUFC6316 TUFC6250 |
9 12 16 20 26 |
TUDB614 TUDB612 TUDB610 TUDB6316 TUDB6250 |
14 16 19 23 29 |
X | X |
9” | 14 Ga. 12 Ga. 10 Ga. 3/16” 1/4” |
10” | 6-1/8” | 1-1/2” | 13-1/4” 13-1/4” 13-1/4” 13-3/8” 13-1/2” |
TUFC914 TUFC912 TUFC910 TUFC9316 TUFC9250 |
12 16 20 26 30 |
TUDB914 TUDB912 TUDB910 TUDB9316 TUDB9250 |
18 22 27 33 39 |
TUF914J TUF912J TUF910J TUF9316J TUF9250J |
19 25 33 43 62 |
12” | 12 Ga. 10 Ga. 3/16” 1/4” |
13” | 7-3/4” | 2” | 17-1/4” 17-1/4” 17-3/8” 17-1/2” |
TUFC1212 TUFC1210 TUFC12316 TUFC12250 |
20 26 35 46 |
TUDB1212 TUDB1210 TUDB12316 TUDB12250 |
31 28 45 56 |
TUF1212J TUF1210J TUF12316J TUF12250J |
32 41 54 72 |
14” | 12 Ga. 10 Ga. 3/16” 1/4” |
15” | 9-1/4” | 2” | 19-1/4” 19-1/4” 19-3/8” 19-1/2” |
TUFC1412 TUFC1410 TUFC14316 TUFC14250 |
22 29 39 51 |
TUDB1412 TUDB1410 TUDB14316 TUDB14250 |
33 40 49 62 |
TUF1412J TUF1410J TUF14316J TUF14250J |
36 47 61 82 |
16” | 12 Ga. 10 Ga. 3/16” 1/4” |
17” | 10-5/8” | 2” | 21-1/4” 21-1/4” 21-3/8” 21-1/2” |
TUFC1612 TUFC1610 TUFC16316 TUFC16250 |
25 32 50 56 |
TUDB1612 TUDB1610 TUDB16316 TUDB16250 |
36 43 53 67 |
TUF1612J TUF1610J TUF16316J TUF16250J |
41 52 69 91 |
18” | 10 Ga. 3/16” 1/4” |
19” | 12-1/8” | 2-1/2” | 24-1/4” 24-3/8” 24-1/2” |
TUFC1810 TUFC18316 TUFC18250 |
37 49 64 |
TUDB1810 TUDB18316 TUDB18250 |
43 65 80 |
TUF1810J TUF18316J TUF18250J |
58 77 102 |
20” | 3/16” 1/4” |
21” | 13-1/2” | 2-1/2” | 26-1/2” 26-1/2” |
TUFC20316 TUFC20250 |
53 70 |
TUDB20316 TUDB20250 |
69 86 |
TUF20316J TUF20250J |
84 112 |
24” | 3/16” 1/4” |
25” | 16-1/2” | 2-1/2” | 30-3/8” 30-1/2” |
TUFC24316 TUFC24250 |
63 82 |
TUDB24316 TUDB24250 |
78 98 |
TUF24316J TUF24250J |
100 133 |
30” | 3/8” 1/2” |
31” | 19-1/2” | 3” | 37-3/4” 38” |
TUFC30375 X | 151 X |
TUDB30375 TUDB30500 |
163 238 |
TUF30375J X | 241 X |
36” | 3/8” 1/2” |
37” | 22-1/2” | 3” | 43-3/4” 44” |
TUFC36375 X | 173 X |
TUDB36375 TUDB36500 |
185 260 |
TUA36375J X | 281 X |
† Weights do not include clamps • Weights do not include couplings
Flared Troughs
Screw Dia. |
Trough Thk. |
A | B | C | D | E | Part Number | Weight Per Foot (Lbs.) |
---|---|---|---|---|---|---|---|---|
4” | NOT AVAILABLE | |||||||
14 Ga. | 16-5/8” | TFLF614 | 5 | |||||
6” | 12 Ga. 3/16” |
14” | 7” | 1-1/4” | 16-5/8” 16-3/4” |
3-1/2” | TFLF612
TFLF6316 |
8 11 |
1/4” | 16-7/8” | TFLF6250 | 15 | |||||
12 Ga. | 21-1/4” | TFLF912 | 10 | |||||
9” | 10 Ga. 3/16” |
18” | 9” | 1-1/2” | 21-1/4” 21-3/8” |
5” | TFLF910
TFLF9316 |
18 23 |
1/4” | 21-1/2” | TFLF9250 | 37 | |||||
12 Ga. | 26-1/4” | TFLF1212 | 17 | |||||
12” | 10 Ga. 3/16” |
22” | 10” | 2” | 26-1/4” 26-3/8” |
6-1/2” | TFLF1210
TFLF12316 |
22 30 |
1/4” | 26-3/8” | TFLF12250 | 41 | |||||
12 Ga. | 28-1/4” | TFLF1412 | 19 | |||||
14” | 10 Ga. 3/16” |
24” | 11” | 2” | 28-1/4” 28-3/8” |
7-1/2” | TFLF1410
TFLF14316 |
24 33 |
1/4” | 28-3/8” | TFLF14250 | 45 | |||||
12 Ga. | 32-1/4” | TFLF1612 | 20 | |||||
16” | 10 Ga. 3/16” |
28” | 11-1/2” | 2” | 32-1/4” 32-3/8” |
8-1/2” | TFLF1610
TFLF16316 |
26 36 |
1/4” | 32-1/2” | TFLF16250 | 48 | |||||
18” | 10 Ga. 3/16” 1/4” |
31” | 12-1/8” | 2-1/2” | 36-1/4” 36-3/8” 36-1/2” |
9-1/2” | TFLF1810 TFLF18316 TFLF18250 |
30 40 53 |
20” | 3/16” 1/4” |
34” | 13-1/2” | 2-1/2” | 39-3/8” 39-1/2” |
10-1/2” | TFLF20316 TFLF20250 |
43 58 |
24” | 3/16” 1/4” |
40” | 16-1/2” | 2-1/2” | 45-3/8” 45-1/2” |
12-1/2” | TFLF24316 TFLF24250 |
51 68 |
30” | 3/8” 1/2” |
48” | 19-1/2” | 3” | 55” 55-3/8” |
15-1/2” | TFLF30375 TFLF30500 |
13 184 |
36” | 3/8” 1/2” |
54” | 22-1/2” | 3” | 61-1/8” 61-1/2” |
18-1/2” | TFLF36375 TFLF36500 |
15 213 |
Tubular Troughs
Screw Dia. |
Trough Thk. |
A (Dia.) |
B | C | Non-Split | Split | ||
---|---|---|---|---|---|---|---|---|
Part Number | Wt. Per Foot (Lbs.) |
Part Number | Wt. Per Foot (Lbs.) |
|||||
4” | 14 Ga. 12 Ga. 10 Ga. |
5” • | 1” | 7-1/4 | N/A TT412-DS N/A |
X 7 X | TTF414 TTF412 TTF410 | 5 7 9 |
6” | 14 Ga. 12 Ga. 10 Ga. 3/16” 1/4” |
7” • | 1-1/4” | 9-3/4” 9-3/4” 9-3/4” 9-7/8” 10” |
TT614-DS TT612-DS N/A N/A N/A |
7 9 X X X |
TTF614 TTF612 TTF610 TTF6316 TTF6250 |
8 10 13 18 26 |
9” | 14 Ga. 12 Ga. 10 Ga. 3/16” 1/4” |
10” • | 1-7/16” | 13-3/8” 13-3/8” 13-3/8” 13-3/8” 13-1/2” |
N/A TT912-DS TT910-DS TT9316-DS TT9250-DS |
X 13 17 22 30 |
TTF914 TTF912 TTF910 TTF9316 TTF9250 |
11 15 19 25 34 |
12” | 12 Ga. 10 Ga. 3/16” 1/4” |
13” | 2” | 17-1/4” 17-1/4” 17-3/8” 17-3/8” |
TT1212 TT1210 TT12316 TT12250 |
16 21 28 37 |
TTF1212 TTF1210 TTF12316 TTF12250 |
20 25 33 45 |
14” | 12 Ga. 10 Ga. 3/16” 1/4” |
15” | 2” | 19-1/4” 19-1/4” 19-3/8” 19-1/2” |
TT1412 TT1410 TT14316 TT14250 |
19 24 32 43 |
TTF1412 TTF1410 TTF14316 TTF14250 |
22 29 38 50 |
16” | 12 Ga. 10 Ga. 3/16” 1/4” |
17” | 2” | 21-1/4” 21-1/4” 21-3/8” 21-1/2” |
TT1612 TT1610 TT16316 TT16250 |
21 28 37 49 |
TTF1612 TTF1610 TTF16316 TTF16250 |
25 32 42 56 |
18” | 10 Ga. 3/16” 1/4” |
19” | 2-1/2” | 24-1/4” 24-1/2” 24-1/2” |
TT1810 TT18316 TT18250 |
31 41 55 |
TTF1810 TTF18316 TTF18250 |
36 48 64 |
20” | 3/16” 1/4” |
21” | 2-1/2” | 26-3/8” 26-1/2” |
TT20316 TT20250 |
46 61 |
TTF20316 TTF20250 |
53 70 |
24” | 3/16” 1/4” |
25” | 2-1/2” | 30-3/8” 30-1/2” |
TT24316 TT24250 |
54 73 |
TTF24316 TTF24250 |
62 82 |
30” | 3/8” 1/2” |
31” | 3” | 37-3/4” 38” |
TT30375 TT30500 |
136 188 |
TTF30375 TTF30500 |
153 210 |
36” | 3/8” 1/2” |
37” | 3” | 43-3/4” 44” |
TT36375 TT36500 |
163 224 |
TTF36375 TTF36500 |
180 245 |
• Down Spouting Used for Non-Split 4, 6, and 9 inch: ”A” Dimension Becomes OD and not ID
Rectangular Troughs
Screw Dia. |
Trough Thk. |
A | B | C | D | Angle Flanged | Formed Flanged | Double Angle | Formed Channel | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Part Number |
Wt./Ft. (Lbs.) |
Part Number |
Wt./Ft. (Lbs.) |
Part Number |
Wt./Ft. (Lbs.) |
Part Number |
Wt./Ft. (Lbs.) |
||||||
4” | NOT AVAILABLE | ||||||||||||
6” | 14 Ga. 12 Ga. 10 Ga. 3/16” 1/4” |
7” | 4-1/2” | 1-1/4” | 9-3/4” 9-3/4” 9-3/4” 9-7/8” 10” |
TRA614 TRA612 TRA610 TRA6316 TRA6250 |
8 11 14 19 25 |
TRF614 TRF612 TRF610 TRF6316 TRF6250 |
8 11 14 19 25 |
TRDA614 TRDA612 TRDA610 TRDA6316 TRDA6250 |
9 12 16 21 28 |
TRFC614 TRFC612 TRFC610 TRFC6316 TRFC6250 |
8 11 14 19 25 |
9” | 14 Ga. 12 Ga. 10 Ga. 3/16” 1/4” |
10” | 6-1/8” | 1-1/2” | 13-1/4” 13-1/4” 13-1/4” 13-3/8” 13-1/2” |
TRA914 TRA912 TRA910 TRA9316 TRA9250 |
11 15 19 26 34 |
TRF914 TRF912 TRF910 TRF9316 TRF9250 |
11 15 19 26 34 |
TRDA914 TRDA912 TRDA910 TRDA9316 TRDA9250 |
12 17 22 29 38 |
TRFC914 TRFC912 TRFC910 TRFC9316 TRFC9250 |
11 15 19 26 35 |
12” | 12 Ga. 10 Ga. 3/16” 1/4” |
13” | 7-3/4” | 2” | 17-1/4” 17-1/4” 17-3/8” 17-1/2” |
TRA1212 TRA1210 TRA12316 TRA12250 |
19 25 31 44 |
TRF1212 TRF1210 TRF12316 TRF12250 |
19 25 31 44 |
TRDA1212 TRDA1210 TRDA12316 TRDA12250 |
22 28 38 50 |
TRFC1212 TRFC1210 TRFC12316 TRFC12250 |
19 25 34 45 |
14” | 12 Ga. 10 Ga. 3/16” 1/4” |
15” | 9-1/4” | 2” | 19-1/4” 19-1/4” 19-3/8” 19-1/2” |
TRA1412 TRA1410 TRA14316 TRA14250 |
22 29 38 51 |
TRF1412 TRF1410 TRF14316 TRF14250 |
22 29 38 51 |
TRDA1412 TRDA1410 TRDA14316 TRDA14250 |
24 32 42 56 |
TRFC1412 TRFC1410 TRFC14316 TRFC14250 |
22 29 39 52 |
16” | 12 Ga. 10 Ga. 3/16” 1/4” |
17” | 10-5/8” | 2” | 21-1/4” 21-1/4” 21-3/8” 21-1/2” |
TRA1612 TRA1610 TRA16316 TRA16250 |
25 32 42 57 |
TRF1612 TRF1610 TRF16316 TRF16250 |
25 32 42 57 |
TRDA1612 TRDA1610 TRDA16316 TRDA16250 |
27 35 37 50 |
TRFC1612 TRFC1610 TRFC16316 TRFC16250 |
25 33 44 58 |
18” | 10 Ga. 3/16” 1/4” |
19” | 12-1/8” | 2-1/2” | 24-1/4” 24-3/8” 24-1/2” |
TRA1810 TRA18316 TRA18250 |
37 49 65 |
TRF1810 TRF18316 TRF18250 |
37 49 65 |
TRDA1810 TRDA18316 TRDA18250 |
40 54 72 |
TRFC1810 TRFC18316 TRFC18250 |
37 49 66 |
20” | 3/16” 1/4” |
21” | 13-1/2” | 2-1/2” | 26-3/8” 26-1/2” |
TRA20316 TRA20250 |
54 72 |
TRF20316 TRF20250 |
53 71 |
TRDA20316 TRDA20250 |
59 78 |
TRFC20316 TRFC20250 |
54 73 |
24” | 3/16” 1/4” |
25” | 16-1/2” | 2-1/2” | 30-3/8” 30-1/2” |
TRA24316 TRA24250 |
63 85 |
TRF24316 TRF24250 |
63 84 |
TRDA24316 TRDA24250 |
69 91 |
TRFC24316 TRFC24250 |
65 86 |
30” | 3/8” | 31” | 19-1/2” | 3” | 37-3/4” | TRA30375 | 154 | TRF30375 | 153 | TRDA30375 | 166 | TRFC30375 | 157 |
36” | 3/8” | 37” | 22-1/2” | 3” | 43-3/4” | TRA36375 | 180 | TRF36375 | 178 | TRDA36375 | 192 | TRFC36375 | 183 |