Hebei Better Rubber Co., Ltd.

Products

Design procedure for conveyor belt

Layer stepping type belt:

Whole carcass type belt:Width(m)×Length(m)

Recommended minimum pulley diameter

belt type/Type/pulley diameter(mm)/piy		3	4	5	6	7	8	9	10	11	12
CC belt	BE/BR	400	500	600	800	1000	1250	1250	1400	1600	1600
NN belt	NN100	250	315	400	500	630	800	1000	1250
	NN150	250	315	400	500	630	800	1000	1250
	NN200	315	400	500	630	800	1000	1250	1400
	NN250	400	500	630	800	1000	1250	1250	1400
	NN300	500	630	800	1000	1250	1400	1400	1600
	NN400	630	800	1000	1250	1400	1600	1600	1800
EP belt	EP100	250	315	400	500	630	800	800	1000
	EP150	250	315	400	500	630	800	800	1000
	EP200	500	630	800	1000	1250	1400	1400	1600
	EP250	630	800	1000	1250	1400	1600	1600	1800
	EP300	630	800	1000	1250	1400	1600	1600	1800
	EP400	800	1000	1250	1400	1600	1800

Type	680S	800S	1000S	1250S	1400S	1600S	1800S	2000S	2240S	2500S
minimum pulley diameter	630	630	630	800	800	1000	1000	1250	1250	1400

recommended conveying capacity

form of section/Speed(m/s)/Conveying capacity t/h/Width(mm)		500	650	800	1000	1200	1400
CC belt	0.80	78	131
Slot form	1.00	97	164	278	435	655	891
	1.25	122	206	348	544	819	1115
	1.60	156	264	445	696	1048	1427
	2.00	191	323	546	853	1284	1748
	2.50	232	391	661	1033	1556	2118
	3.15			824	1233	1858	2528
	4.00					2202	2996
Parallel form	0.80	41	67	118
	1.00	52	88	147	230	345	469
	1.25	66	110	184	288	432	588
	1.60	84	142	236	368	553	753
	2.00	103	174	289	451	677	922
	2.50	125	211	350	546	821	1117

Common belt rubber cover property:

special belt rubber cover property:

Variety	Tensile strength Mpa	Elongation rate %	Abrasionmm³	Special property
underloaded conveyor belt	≥7	≥300	≤200	-
Oil proof belt	≥14	≥350	≤250	Volume change rate in the oil soak test	2#Oil 70±1℃ 72h+20%
					3#Oil 70±1℃ 72h+50%
					3#Oil 100±1℃ 22±0.25h+50%
Acid and alkali resistant belt	≥14	≥400	≤200	Volume change rate in the liquid soak test＜10% Change rate of tensile strength＜10%	A₁hydrochioric acid 18% 50°×96h
					A₂ sulphuric acid 50% 50°×96h
					A₃ sodium hydroxide(NaOH)48% 50×96h
PVG belt	≥10	≥350	≤200	safety property,please see the list below
Fire resistant belt for genenal usd	≥10	≥350	-
	≥15	≥350	≤200	Cold resistant tensile rate ≥0.2
Anti-static belt	≥12	≥450	≤200	Sheet resistance,Ω≤ 2.5×10⁸
Foodstuff conveyor belt	≥10	≥300	-	Potassium permanganate consumption rate,Water soak ≤70mg/L;Zinc,4%Acetic acid soak≤60mg/L;Heavy metal(pb), 4%Acetic acid soak≤1.0mg/L;Evaporation residue, 4%Acetic acid soak≤1000mg/L;Ethanedinitnle acid soak≤2000mg/L;Decolor test,The soad is negatively,and the oil or other liquid is negatively.

Safety property of fire resistant conveyor belt:

	Whole carcass belt	Common belt
Buming on spirit bumer(flame or glow)	Average druation ≥3_s,(cover rubber),individual set piece 10s Average druation ≥ (Rubber without fabric surface cover,),individual set piece 15s	Average duration≤60s
Buming on propane bumer	≥250mm	-
Anti-static property	≤3×10⁸Ω	≤3×10⁸Ω
Drum friction	≤325℃，Any test piece shall not show any sign of flame or glow	-

Adhesion Index:

		Common belt	High temperature resistant belt	NN belt	EP belt	Fire resistant belt
Adhesion index(average value)	Fabric	≥2.7	≥3.0	≥4.5	≥4.5	-
	Top	≥2.7	≥2.8	≥3.5	≥3.5	≥4.0
	Bottom	≥2.4	≥2.2	≥3.2	≥3.2	≥3.15

Tensile Strength for the whole belt:

Fabric strength index(N/mm)Fabric type		The tensile strength for different plies of series belt(N/mm)
Fabric strength index(N/mm)Fabric type		3Ply	4Ply	5Ply	6Ply	7Ply	8Ply	9Ply	10Ply	12Ply
CC fabric BE/BR		160	200	250	315	315	400	400	500	630
Synthetic fiber (fabric)(NN,EP,PP)	100	200	250	315	400	500	630	630	800
	150	250	315	400	500	630	800	800	1000
	200	500	630	800	1000	1000	1250	1400	1600
	250	630	800	1000	1250	1400	1600	1600	2000
	300	800	1000	1250	1600	1600	200	2000	2500
	400	100	1250	1600	2000	2000	2500	3150
	500	1250	1600	2000	2500	2500	3150
	600	1600	2000	2500	3150