The endless spiral is the best and most economical solution should you need to convey large quantities of material in a short time. Our company’s sophisticated production technology, capillary checks and overall control on the finished product, besides over 30 years’ experience allow Agrispiral to supply a proven quality product, a punctual service, in compliance with every customer’s requirements. Endless spirals can be either carbon steel or stainless steel. They are cold rolled. The versatility of our production range allows us to produce spirals 45 to over 1000 mm outer diameter and in a gauge ranging from 3 to 12 mm.

• STANDARD LENGTH: 3 m bars (± 2%).
• OUTER DIAMETER: according to the strip width and inner diameter.
• INNER DIAMETER: in view of the shaft, even less than 1/5 of the outer diameter.
• PITCH: same as the outer diameter. For special conveyors, a different pitch, even less than 2/3 of the outer diameter or more than 1.5 times the diameter can be provided.
• GAUGE: approx. twice as the outer gauge on the inner diameter.
• COILING DIRECTION: to the right and to the left to be specified upon order.

Attenzione: capovolgendo la spirale non cambia il senso di rotazione

TOLERANCE
RATED OUTER DIAMETER	INNER DIAMETER	PITCH	OUTER DIAMETER
fino a 150 mm.	-0 + 20/10	± 5 %	– 8/10 + 20/10
150 – 250 mm.	-0 + 25/10	± 5 %	– 8/10 + 25/10
250 – 500 mm.	-0 + 32/10	± 5 %	– 20/10 + 42/10

STANDARD PITCH (SQUARE):

pitch equal to the outer diameter for almost all types of conveyors.

REDUCED PITCH:

used for mixers and conveyors with a slant of more than 20° (usually a reduction down to 2/3 of the outer diameter, if the outer diameter exceeds 300 the reduction shall be higher).

EXTENDED PITCH:

for fast conveyors of running materials or for liquid mixers. (even more than 1.5 times the outer diameter

SPIRAL STRIP:

for viscous or damp material transportation for snowplow. etc. (sticking between coil and shaft is avoided)

Influence of the slant on conveyor rate

The hourly conveyor RATE varies considerably depending on the product to be conveyed: size, humidity, auger diameter, slant, speed of rotation, filling degree, etc.

• Please see the table below for the indicative values for grain conveyors with an 80 diameter spiral (100 diameter tube)

• 650/700 rpm see table below.

Slant	0°	15°	30°	45°	60°	90°
Conveyor rate t/h	10	9	7,5	6,5	6	3,5

CODE		EXT. DIAMETER mm.	PASSO mm.	PITCH mm.	PER SHAFT of mm.	Kg/mt. circa
Sx	Dx
0229	01	50	50	13.5	2.2	0.98
	0308	60	60	21.3	1.8	0.90
	0163	60	60	26.9	2.0	0.85
	076	65	65	30.3	2.0	0.85
0173	04	80	80	21.3	2.5	1.70
0285	05	80	80	26.9	2.4	1.58
06	031	80	80	33.7	2.7	1.40
061	0127	90	90	26.9	2.4	1.90
041	040	100	100	21.3	2.0	1.87
08	07	100	100	26.9	2.5	1.99
	085	100	70	33.7	2.5	2.50
037	035	100	100	33.7	2.5	2.00
	0251	110	110	42.4	2.5	1.95
	0283	120	80	33.7	2.0	3.13
0178		120	120	26.9	2.0	2.46
010	09	120	120	33.7	2.2	2.47
	011	130	130	33.7	2.4	2.63
090	082	130	130	42.4	2.2	2.51
0213	091	150	150	33.7	2.0	3.00
0123	012	150	100	48.3	2.4	3.93
014	013	150	150	48.3	2.4	2.94
0121	0120	150	150	60.3	2.5	2.76
028	015	160	160	48.3	2.4	3.01
	019	180	100	60.3	2.2	5.02
	0114	180	120	60.3	2.3	4.65
	0128	180	120	70.0	2.6	5.08
018	017	180	180	48.3	2.4	3.56
093	092	180	180	60.3	2.4	3.42
	0135	190	190	42.4	2.0	3.35
021	020	200	200	48.3	2.0	3.45
0214	0199	200	150	60.3	2.3	4.00
023	022	200	200	60.3	2.3	4.00
026	024	220	220	60.3	2.3	4.30
	095	230	230	48.3	2.0	4.50
0150	0208	230	230	60.3	2.0	4.23
026	025	250	250	60.3	2.0	4.35
049	048	250	250	70.0	2.0	4.34
0333	0332	250	200	76.1	2.0	5.34
	0327	300	250	76.1	2.0	5.34
0357	097	300	300	76.1	2.0	4.88
069	068	300	300	88.9	2.0	5.00
	0175	300	300	88.9	3.0	7.52
	038	350	300	88.9	3.0	10.56
	0273	350	350	88.9	3.0	9.00
079	0995	400	400	101.6	4-3.3	10/11
	0330	400	400	114.3	4-3.3	10.51

CODE		EXT. DIAMETER mm.	PASSO mm.	PITCH mm.	PER SHAFT of mm.	Kg/mt. circa
Sx	Dx
474	809	50	47	13.5	1.7	0.70
2	1	50	50	13.5	1.7	0.70
188	187	60	60	21.3	1.7	0.90
9	8	70	70	17.2	1.5	1.10
11	10	80	80	17.2	1.7	1.30
13	12	80	80	21.3	1.7	1.30
15	14	80	80	26.9	1.7	1.15
631	17	85	85	21.3	1.8	1.55
20	19	90	90	26.9	1.7	1.40
22	21	100	100	21.3	1.6	1.55
24	23	100	100	26.9	1.7	1.60
27	26	100	100	33.7	1.8	1.50
31	30	120	120	26.9	1.6	1.90
37	36	120	120	33.7	1.8	1.90
39	38	130	130	26.9	1.6	2.00
41	40	130	130	33.7	1.7	2.00
43	42	130	130	42.4	1.7	1.90
47	46	135	135	26.9	1.5	2.00
50	49	135	135	33.7	1.7	2.10
52	51	135	135	42.4	1.7	1.90
54	53	140	140	33.7	1.6	2.10
56	55	140	140	42.4	1.8	2.15
	446	140	140	48.3	1.8	2.10
62	61	150	150	33.7	1.6	2.50
64	63	150	150	42.4	1.7	2.10
	65	150	100	48.3	1.7	3.45
67	66	150	150	48.3	1.8	2.30
1059	68	150	150	48.3	4.0	4.70
	1587	150	150	48.3	5.0	6.10
	481	150	150	60.3	2.0	2.20
150	454	150	150	60.3	4.5	4.90
73	72	160	160	42.4	1.6	2.40
75	74	160	160	48.3	1.6	2.30
561	560	160	160	48.3	4.0	5.30
465	280	170	170	48.3	1.7	2.50
1376	409	180	180	28.0	1.7	2.90
267	1214	180	180	33.7	1.8	2.80
77	76	180	180	42.4	1.6	2.60
	1362	180	180	42.4	4.0	6.30
79	78	180	140	48.3	1.5	3.00
81	80	180	180	48.3	1.7	2.60
524	82	180	180	48.3	3.4	5.40
84	83	180	180	60.3	1.7	2.60
632	85	180	180	60.3	4.3	6.20
	1588	180	180	60.3	6.0	8.60
	574	200	200	28.0	1.8	3.50
	674	200	200	28.0	3.0	5.80
91	90	200	200	48.3	1.8	3.20
92	532	200	200	48.3	3.5	6.20
	1610	200	200	48.3	5.3	10.10
95	94	200	200	60.3	2.0	3.40
1213	255	200	200	60.3	3.7	6.00
	1589	200	200	60.3	5.5	9.70
97	96	210	210	48.3	1.8	3.40
98	1538	210	160	60.3	1.8	4.10
	857	220	220	28.0	2.1	4.50
	858	220	220	28.0	2.8	6.40
103	102	220	220	48.3	1.8	3.50
105	104	220	200	60.3	1.9	3.60
107	106	230	230	48.3	1.8	4.30
109	108	230	170	60.3	1.7	5.10
111	110	230	230	60.3	1.8	4.00
112		240	240	48.3	2.0	4.70
	113	240	240	60.3	2.0	4.50
115	114	250	200	60.3	1.9	5.50
117	116	250	250	60.3	1.8	4.00
118	342	250	250	60.3	2.3	4.00
	1590	250	250	60.3	5.5	12.00
122	121	280	280	60.3	2.2	5.80
123	234	280	190	70.0	2.0	6.50
125	124	280	280	70.0	2.0	5.70
128	127	300	200	70.0	2.1	8.30
353	129	300	250	70.0	2.3	7.10
132	131	300	300	70.0	2.0	5.20
134	133	300	300	70.0	2.4	6.90
137	136	300	300	76.1	2.0	5.30
	1591	300	300	76.1	5.6	14.15
	140	300	300	88.9	2.3	5.70
143	142	350	250	88.9	2.3	9.20
146	144	350	300	88.9	2.4	8.40
480	479	350	300	88.9	3.5	11.50
148	147	350	350	88.9	2.3	8.40
150	149	350	350	88.9	3.1	10.50
152	151	350	350	114.3	2.5	7.00
	1259	400	400	88.9	3.5	15.00
158	157	400	350	101.6	3.6	14.50
160	159	400	400	101.6	2.0	7.20
162	161	400	400	101.6	4.0	14.00