Screw Conveyor Flight Edging

The Spiratex Co. extrudes a snap-on cover for flight edges on screw/auger conveyors. Users like the flight edging for 2 reasons. First it narrows the gap between the edge of the flight and the wall to prevent product rollback, and second it eliminates the possibility of metal to metal contact between the flights and the wall.

Flight Auger

The Spiratex Co. manufactures and sells flight edging in 50ft. and 100ft. coils.

When estimating the footage required, you will need to determine the following:

  • Is your screw a standard full pitch screw?
    • This means the pitch (distance from one edge to the next) is equal to the screw diameter.
    • (ft) required =3.4 x the length of the screw (ft)
  • Is your screw a half pitch screw?
    • This means the pitch (distance from one edge to the next) is equal to the half of the screw diameter
    • (ft) required = 6.7 x the length of the screw (ft)
  • Is your screw undetermined or a variable screw?
    • (ft ) required = .283 x screw diameter (inches) x number of turns.

When calling for a quotation, you will want to know, the screw diameter, the thickness of the flight and whether the flight edging will require UV stabilization. UV stabilization will be needed if the screw conveyor sits outside in the direct sunlight.

The Spiratex Co. sells two different styles of edging, one thicker than the other.

INSTALLATION: Snap it onto one end and pin it and then tap it on with a rubber mallet as you spin the auger around. You shouldn't need to pin the flight edging in any more than the original spot. This will allow thermal expansion and contraction.

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2733		 2734
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Screw Diameter (inches) Flight thickness (inches) SPX# Catalog Number Minimum Coil O.D. (inches) Maximum Coil O.D. (inches) Average feet/coil Average Coils per 100 ft.
6 1/16 1043223 2733-6-.06 5.25 6.00 1.276 78.4
6 1/8 1043224 2733-6-.13 5.25 6.00 1.276 78.4
9 3/32 1043225 2733-9-.10 8.00 9.00 2.029 49.3
9 1/8 1043226 2733-9-.13 8.00 9.00 2.029 49.3
12 1/8 1043227 2733-12-.13 10.50 11.50 2.683 37.3
14 1/8 1043228 2733-14-.13 12.00 13.50 3.142 31.8
16 1/8 1043229 2733-16-.13 14.00 15.50 3.665 27.3
18 1/8 1043280 2733-18-.13 16.00 17.50 4.189 23.9
24 1/8 1063563 2733-24-.13 22.00 23.50 5.760 17.4
Screw Diameter (inches) Flight thickness (inches SPX# Catalog Number Minimum Coil O.D. (inches) Maximum Coil O.D. (inches) Average feet/coil Average Coils per 100 ft.
6 3/16 1043230 2734-6-.19 5.25 6.00 1.276 78.4
6 1/4 1043231 2734-6-.25 5.25 6.00 1.276 78.4
6 3/8 1043232 2734-6-.38 5.25 6.00 1.276 78.4
9 3/16 1043233 2734-9-.19 8.00 9.00 2.029 49.3
9 1/4 1043234 2734-9-.25 8.00 9.00 2.029 49.3
9 3/8 1043235 2734-9-.38 8.00 9.00 2.029 49.3
12 3/16 1043236 2734-12-.19 10.50 11.50 2.683 37.3
12 1/4 1043237 2734-12-.25 10.50 11.50 2.683 37.3
12 3/8 1043238 2734-12-.38 10.50 11.50 2.683 37.3
14 3/16 1043239 2734-14-.19 12.00 13.50 3.142 31.8
14 1/4 1043240 2734-14-.25 12.00 13.50 3.142 31.8
14 3/8 1043241 2734-14-.38 12.00 13.50 3.142 31.8
16 3/16 1043242 2734-16-.19 14.00 15.50 3.665 27.3
16 3/16 1043242 2734-16-.19 14.00 15.50 3.665 27.3
16 1/4 1043243 2734-16-.25 14.00 15.50 3.665 27.3
16 3/8 1043244 2734-16-.38 14.00 15.50 3.665 27.3
18 1/4 1043246 2734-18-.25 16.00 17.50 4.189 23.9
18 3/8 1043247 2734-18-.38 16.00 17.50 4.189 23.9
20 3/16 1043248 2734-20-.19 17.50 19.50 4.647 21.5
20 1/4 1043249 2734-20-.25 17.50 19.50 4.647 21.5
20 3/8 1043250 2734-20-.38 17.50 19.50 4.647 21.50
24 3/16 1043251 2734-24-.19 22.50 24.75 5.989 16.7
24 1/4 1043252 2734-24-.25 22.50 24.75 5.989 16.7
24 3/8 1043253 2734-24-.38 22.50 24.75 5.989 16.7
31.5 3/16 1043254 2734-31.5-.19 28.50 31.50 7.658 13.1