DIN 22252 Round Link Mining Chain

TOPONE® uses DIN 22252 standard to produce round steel chain links for continuous conveyors and excavation equipment in the mining industry. The steel used to produce the welded round link chain contains alloy elements such as Cr Ni Mo. It can meet Grade D (1050MPa), Grade C++ (900MPa), and Grade C (800MPa).Suitable for Armored Face Conveyors (AFC), Beam Stage Loaders (BSL), road header machines, coal plows and other equipment that requires this type of chain.

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Introduction

TOPONE® can provide round link alloy steel chains in accordance with DIN 22252 or PN-G-46701 or GB/T-12718 or GOST 25996 standard.

We can provide any surface hardness (carbonitriding or special tempering heat treatment,。Min,38 HRC,Max.64 HRC) to meet the underground mining needs of high hardness geology.

It is also available with chains with a strength of 1150MPa (Grade 110 chain). It is particularly suitable for coal seams with high economic value, and can greatly increase the amount of coal passing, thereby improving production efficiency.

Parameter

MEDIUM LINK CHAIN

Dimension
Chain Size d x p	Diameter d	Pitch P	b₁min.	b₂ max.	Weight
(mm)	(mm)	(mm)	(mm)	(mm)	(kg/m)
14 x 50	14 ±0.4	50 ±0.5	17	48	4.0
18 x 64	18 ±0.5	64 ±0.6	21	60	6.6
19 x 64.5	19 ±0.6	64.5 ±0.6	22	63	7.4
22 x 86	22 ±0.7	86 ±0.9	26	73	9.5
24 x 86	24 ±0.7	86 ±0.9	28	79	11.6
24 x 87.5	24 ±0.7	87.5 ±0.9	28	79	11.5
26 x 92	26 ±0.8	92 ±0.9	30	85	13.7
30 x 108	30 ±0.9	108 ±1.1	34	97	18.0
34 x 126	34 ±1.0	126 ±1.3	38	110	22.7
38 x 126	38 ±1.1	126 ±1.4	42	121	30.1
38 x 137	38 ±1.1	137 ±1.4	42	121	29.0
42 x 137	42 ±1.1	137 ±1.4	48	137	36.9
42 x 146	42 ±1.1	146 ±1.5	48	137	36.0
Notice: l All anti-corrosive coatings decrease the chain mechanical properties l Other sizes can be customized according to customer requirements

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Paired Long Chain: Measuring length and Limit Tolerance chart
Chain Size	Measuring length			Chain Length Limit Tolerance
d x p	Link Quantity n	n x p	Limit Tolerance	L ≤ 5000	L ＞ 5000
(mm)	(mm)	(mm)	(mm)	(mm)	(mm)
22x86	11	946	±1.5	+2 / -0	+0.0004xl /-0
24x86	11	946
24x87.5	11	962.5
26x92	9	828
30x108	9	972
34x126	7	882
38x137	7	959
42x137	5	685
The number of chains must be an odd number

Paired Short Chain: Measuring length and Limit Tolerance chart
Chain Size d x p	Link Quantity n						Width		Radius
	5	7	9	11	13	15	Inside	Outside	Radius
	Measuring length l						b1	b2	r
	+2/-0	+2/-0	±1	±1	±1	±1	Min.	Max.	+2/-0
(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)
14x50	/	/	450	550	650	750	17	48	22
18x64	/	448	576	704	832	960	22	61	28.5
19x64.5	/	451.5	580.5	709.5	838.5	967.5	23	65	30.5
22x86	430	602	774	946	/	/	27	75	35.5
24x86	430	602	774	946	/	/	30	82	39
24x87.5	437.5	612.5	787.5	962.5	/	/	30	82	39
26x92	460	644	828	1012	/	/	32	88	42
30x108	540	756	972	/	/	/	37	102	49
34x126	630	882	1134	/	/	/	42	116	56

Mechanical Properties
Chain Size d x p	Chain Grade	Test Force	Breaking Force min.	Elongation at test force max.	Elongation at breaking force min.	Deflection f min.	Fatigue Resistance min.
(mm)		(KN)	(KN)	(%)	(%)	(mm)	(cycles)
14x50	B	150	190	1.4	14	14	50000
	C	200	250	1.6	14	14	70000
	C++	200	280	1.6	18	14	90000
	D	250	310	1.9	16	14	90000
18x64	B	260	320	1.4	14	18	50000
	C	330	410	1.6	14	18	70000
	C++	330	460	1.6	18	18	90000
	D	410	510	1.9	16	18	90000
19x64 19x64.5	B	290	360	1.4	14	19	50000
	C	360	450	1.6	14	19	70000
	C++	360	510	1.6	18	19	90000
	D	450	565	1.9	16	19	90000
22x86	B	380	490	1.4	14	22	50000
	C	490	610	1.6	14	22	70000
	C++	490	680	1.6	18	22	90000
	D	610	760	1.9	16	22	90000
24x86 24x87.5	B	460	570	1.4	14	24	50000
	C	580	720	1.6	14	24	70000
	C++	580	815	1.6	18	24	90000
	D	720	900	1.9	16	24	90000
26x92	B	540	670	1.4	14	26	50000
	C	640	850	1.6	14	26	70000
	C++	700	960	1.6	18	26	90000
	D	790	1060	1.9	16	26	90000
30x108	C	850	1130	1.6	14	30	70000
	C++	950	1280	1.6	18	30	90000
	D	1050	1400	1.9	16	30	90000
34x126	C	1080	1450	1.6	14	34	70000
	C++	1200	1650	1.6	18	34	90000
	D	1350	1800	1.9	16	34	90000
38x126 38x137	C	1360	1810	1.6	14	38	70000
	C++	1500	2040	1.6	18	38	90000
	D	1700	2270	1.9	16	38	90000
42x137 42x146	C	1660	2220	1.6	14	42	70000
	C++	1800	2500	1.6	18	42	90000
	D	2070	2770	1.9	16	42	90000

Standards

！This product is not recommended for overhead lifting.

！Any surface coating will affect the mechanical properties of the chain.Please ask staff for details.

！Fatigue resistance T [cycles] and impact force KV [J] according to DIN 22252 standard

！Enhanced performance chains are not recommended for use in harsh, corrosive environments, as pitting and friction martensite may lead to operational failures.

We follow standards：

DIN 17115

Acc. to DIN 22252 or PN-G-46701 or GB/T-12718 or GOST 25996

DIN 50100

DIN EN ISO 148

DIN EN ISO 6506

Optional surface treatment: natural black, powder coating, black electrophoresis, electro-galvanizing, hot-dip galvanizing, Dacromet.

Ambient temperature during use:

Min.: -40 ℃

Max.: 200 ℃

If the application scenario exceeds or is lower than the recommended operating temperature, please consult the staff to see if it is feasible.

Q & A

I don't see the size I want in the datasheet, can I get a custom size?: Yes, please contact our sales. They will work with our technicians to come up with a solution for you based on your application scenario, which is usually free!

How is your hardness distributed in the chain?: We allow different hardnesses in a single link, that a hard crown and a lower hardness plasticized leg.

Which anti-corrosion surface is suitable for me? Because the working environment of longwall mining is harsh and corrosive.: We have many anti-corrosion methods to choose from, such as anti-corrosion oil, electrostatic spraying, hot-dip galvanizing. Please note that any anti-corrosion will affect the mechanical properties of the chain.

What is the normal surface of your chain delivery?: Usually natural, dry, black condition.

Can I use it for Drag chain conveyors, Haulage Systems, Submerged Ash handling conveyors, Dredge Conveyors, Scrapper Coal Feeders, Drag Chain Feeder?: Yes, we can provide absolutely calibrated and matched chains. This is often applied to power plant slag removal, cement plant material lifting, etc.

DIN 22252 Round Link Mining Chain

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