Round Link Chain

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Category: round link chain, round steel link chain, round link mining chain, DIN 22252 mining chain, mining conveyor chain, flight bar chain system

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Application

Armored Face Conveyors (AFC), Beam Stage Loaders (BSL), road header machines, coal plows, etc.

As the No. 1 coal production country, China has seen demand of huge quantity round link mining chains, and thus been encouraging China round steel link chain manufacturing capacity in terms of quantity and quality. SCIC’s chain factory with its 30 years round steel link chains production history has been fully involved into China coal industry supply; our round link chains have been so far well accepted and used by all the main coal & mining companies through China.

Our round steel link chain quality is ensured through each step of chain production, from sound alloy steel bars to precise link fabrication by robot, from computerized flash butt welding to well designed quenching & tempering heat-treatment (resulting in desired strength and surface hardness), from proof test to mechanical tests on verifying the surface & inner quality.

SCIC round link chain is made according to China GB/T-12718 standard and factory Technical Requirements, as well as to DIN 22252 or GOST 25996 standards and clients specs

SCIC round link chain is used for Armored Face Conveyors (AFC), Beam Stage Loaders (BSL), road header machines, coal plows and other equipment that requires this type of chain.

Anti-corrosive coatings (e.g., hot dipped galvanization) result in decreased chain mechanical properties, therefore the application of any anti-corrosive coatings shall subject to order agreement between buyer and SCIC.

Figure 1: round link chain

Table 1: round link chain dimensions

link size (opp. Weld) d (mm)		pitch t (mm)		link width (mm)		link weld size (mm)		unit weight kg/m (~)
nominal	tolerance	nominal	tolerance	inner b1 (min.)	outer b2 (max.)	diameter d1 (max.)	length e	unit weight kg/m (~)
10	± 0.4	40	±0.5	12	34	10.8	7.1	1.9
14	± 0.4	50	±0.5	17	48	15	10	4.0
18	± 0.5	64	±0.6	21	60	19.5	13	6.6
19	± 0.6	64.5	±0.6	22	63	20	13	7.4
22	± 0.7	86	±0.9	26	74	23.5	15.5	9.5
24	± 0.8	86	±0.9	28	79	26	17	11.6
26	± 0.8	92	±0.9	30	86	28	18	13.7
30	± 0.9	108	±1.1	34	98	32.5	21	18.0
34	± 1.0	126	±1.3	38	109	36.5	23.8	22.7
38	± 1.1	126	±1.3	42	121	41	27	30.1
38	± 1.1	137	±1.4	42	121	41	27	29.0
42	± 1.3	137	±1.4	48	137	45	30	36.9
42	± 1.3	146	±1.5	48	137	45	30	36.0
42	± 1.3	152	±1.5	46	133	45	30	35.3
notes: Larger size chain available upon inquiry. Link size (d) to be measured at link straight opposite link weld. Link width (b1 & b2) to be measured off the link weld.

Table 2: round link chain mechanical properties

chain size *d x t* (mm)	chain grade	test force (kN)	elongation under test force % (max.)	breaking force (kN)	elongation at fracture % (min.)	minimum deflection (mm)
10 x 40	S	85	1.4	110	14	10
	SC	100	1.6	130
	SCC	130	1.9	160
14 x 50	S	150	1.4	190	14	14
	SC	200	1.6	250
	SCC	250	1.9	310
18 x 64	S	260	1.4	320	14	18
	SC	330	1.6	410
	SCC	410	1.9	510
19 x 64.5	S	290	1.4	360	14	19
	SC	360	1.6	450
	SCC	450	1.9	565
22 x 86	S	380	1.4	480	14	22
	SC	490	1.6	610
	SCC	610	1.9	760
24 x 86	S	460	1.4	570	14	24
	SC	580	1.6	720
	SCC	720	1.9	900
26 x 92	S	540	1.4	670	14	26
	SC	680	1.6	850
	SCC	850	1.9	1060
30 x 108	S	710	1.4	890	14	30
	SC	900	1.6	1130
	SCC	1130	1.9	1410
34 x 126	S	900	1.4	1140	14	34
	SC	1160	1.6	1450
	SCC	1450	1.9	1810
38 x 126 38 x 137	S	1130	1.4	1420	14	38
	SC	1450	1.6	1810
	SCC	1810	1.9	2270
42 x 137 42 x 146 42 x 152	S	1390	1.4	1740	14	42
	SC	1770	1.6	2220
	SCC	2220	1.9	2770