Screw Conveyor Flight Edging

Flight Edging Benefits Flight edging is designed to eliminate metal to metal contact between the auger flight and the auger conveyor casing. Flight edging prevents product rollback by decreasing the space between the flight edge and casing. To estimate the footage required to cover a screw section: Standard Single/Full Pitch Screw (the pitch is equal to the screw diameter) Flight Edging Required (ft) = 3.4 x length of screw (ft) Half Pitch Screw (the pitch is equal to half the screw diameter) Flight Edging Required (ft) = 6.7 x length of screw (ft) Special Screw Configurations (undetermined and variable screw pitches) Flight Edging Required (ft) = .283 x screw diameter (in) x turns Flight Edging Installation Tips Spiratex extrudes the UHMW/PE in the helical form slightly smaller than the flight diameter allowing the flight edging to be snapped onto the flight edge. Therefore, the plastic will want to come to rest at the smaller diameter. This uses the forces of the plastic itself to retain on the edge. Spiratex does recommend "pinning" the edge on one end to keep it from "walking off" the flight edge. We do NOT recommend "pinning" the plastic on every pitch or on both ends as this will fight the thermal expansion/contraction characteristics of UHMW/PE. We also do not recommend any type of glue/adhesive.

Screw Diameter (Inches)	Flight Thickness (Inches)	SPX #	Catalog Number	Minimum Coil OD (Inches)	Maximum Coil OD (Inches)	Average Feet/Coil	Average Coils per 100 ft.
6	1/16	1043223	2733-6-.06	5.5	6	1.276	78.4
6	1/8	1043224	2733-6-.13	5.5	6	1.276	78.4
9	3/32	1043225	2733-9-.10	8	9	2.029	49.3
9	1/8	1043226	2733-9-.13	8	9	2.029	49.3
12	1/8	1043227	2733-12-.13	10.5	11.5	2.683	37.3
14	1/8	1043228	2733-14-.13	12	13.5	3.142	31.8
16	1/8	1043229	2733-16-.13	14	15.5	3.655	27.3
18	1/8	1043280	2733-18-.13	16	17.5	4.189	23.9
20	1/8	1124463	2733-20-.13	18	19.5	4.745	21.7
24	1/8	1063563	2733-24-.13	22	23.5	5.76	17.4

Screw Diameter (Inches)	Flight Thickness (Inches)	SPX #	Catalog Number	Minimum Coil OD (Inches)	Maximum Coil OD (Inches)	Average Feet/Coil	Average Coils per 100 ft.
6	3/16	1043230	2734-6-.19	5.25	6	1.276	78.4
6	1/4	1043231	2734-6-.25	5.25	6	1.276	78.4
6	3/8	1043232	2734-6-.38	5.25	6	1.276	78.4
9	3/16	1043233	2734-9-.19	8	9	2.029	49.3
9	1/4	1043234	2734-9-.25	8	9	2.029	49.3
9	3/8	1043235	2734-9-.38	8	9	2.029	49.3
12	3/16	1043236	2734-12-.19	10.5	11.5	2.683	37.3
12	1/4	1043237	2734-12-.25	10.5	11.5	2.683	37.3
12	3/8	1043238	2734-12-.38	10.5	11.5	2.683	37.3
14	3/16	1043239	2734-14-.19	12	13.5	3.142	31.8
14	1/4	1043240	2734-14-.25	12	13.5	3.142	31.8
14	3/8	1043241	2734-14-.38	12	13.5	3.142	31.8
16	3/16	1043242	2734-16-.19	14	15.5	3.665	27.3
16	1/4	1043243	2734-16-.25	14	15.5	3.665	27.3
16	3/8	1043244	2734-16-.38	14	15.5	3.665	27.3
18	3/16	1043245	2734-18-.19	16	17.5	4.189	23.9
18	1/4	1043246	2734-18-.25	16	17.5	4.189	23.9
18	3/8	1043247	2734-18-.38	16	17.5	4.189	23.9
20	3/16	1043248	2734-20-.19	17.5	19.5	4.647	21.5
20	1/4	1043249	2734-20-.25	17.5	19.5	4.647	21.5
20	3/8	1043250	2734-20-.38	17.5	19.5	4.647	21.5
24	3/16	1043251	2734-24-.19	22.5	24.75	5.989	16.7
24	1/4	1043252	2734-24-.25	22.5	24.75	5.989	16.7
24	3/8	1043253	2734-24-.38	22.5	24.75	5.989	16.7
30	3/16	1124529	2734-30-.19	28.5	30	7.592	14
30	1/4	1104208	2734-30-.25	28.5	30	7.592	14
30	3/8	1124434	2734-30-.38	28.5	30	7.592	14
31.5	3/16	1043254	2734-31.5-.19	28.5	31.5	7.658	13.1
36	1/4	1134659	2734-36-.25	34.5	36	9.163	11

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Materials

Applications

“In our experience, Spiratex manufactures the VERY BEST in UHMW Polyethylene Ram Extruded products in the world. The finish Spiratex achieves, in combination with the dimensional uniformity of these extrusions, is outstanding. Our customers understand the value of such quality and appreciate receiving it with every shipment we send of your products.”

-John Hickman (President, Claremont Polymer Shapes)

“Spiratex Co. has always had the highest quality consistently meeting and surpassing customer expectations and flexibility in reassigning orders to reduce lead times and increase customer satisfaction.”

-Steve H.

“We’ve used Spiratex for years because of their ability to manufacture all our parts. It’s nice having a one-stop shop!”

-Rita D.

“The quality and overall part finish is something I wish I thought about when I first bid the part out. They weren’t the lowest price but their quality stands alone”.

-Jim C.