Mining Chains DIN 22252 | Koptchev & Sons Ltd

Mining Chains DIN 22252

Mining Chains DIN 22252 – image 2

DIN 22252 – Dimensions and tolerances

d mm	Tolerance mm	t mm	Tolerance mm	b1 min. mm	b2 max. mm	Weight kg/m	5 x t mm	Tolerance mm
14	± 0,4	50,0	± 0,5	17	48	4,0	250,0	± 1,0
18	± 0,5	64,0	± 0,6	21	60	6,6	320,0	± 1,0
19	± 0,6	64,5	± 0,6	22	63	7,6	322,5	± 1,0
22	± 0,7	86,0	± 0,9	26	73	9,5	430,0	± 1,0
24	± 0,7	86,0	± 0,9	28	79	11,6	430,0	± 1,0
24	± 0,7	87,5	± 0,9	28	79	11,5	437,5	± 1,0
26	± 0,8	92,0	± 0,9	30	85	13,7	460,0	± 1,0
30	± 0,9	108,0	± 1,1	34	97	18,0	540,0	± 1,2
34	± 1,0	126,0	± 1,3	38	109	22,7	630,0	± 1,3
38	± 1,1	137,0	± 1,4	42	121	29,0	685,0	± 1,4
42	± 1,1	146,0	± 1,5	48	137	36,5	730,0	± 1,5

DIN 22252 – Mechanical properties

Chain size		Grade 1 / B					Grade 2 / C
Chain size		Proof load	Breaking load	Elongation at proof test	Elongation at break	Tensile test	Proof load	Breaking load	Elongation at proof test	Elongation at break	Tensile test	Working force
d	t	Proof load	Breaking load	Elongation at proof test	Elongation at break	Tensile test	Proof load	Breaking load	Elongation at proof test	Elongation at break	Tensile test	Working force
mm	mm	kN	kN min.	% max.	% min.	f min.	kN	kN min.	% max.	% min.	f min.	kN max.
14	50,0	154	194	1,4	14	14	185	250	1,6	14	14	154
18	64,0	254	321	1,4	14	18	305	410	1,6	14	18	254
19	64,5	283	357	1,4	14	19	340	454	1,6	14	19	283
22	86,0						456	608	1,6	14	22	380
24	86,0						543	724	1,6	14	24	452
24	87,5						543	724	1,6	14	24	452
26	92,0						637	850	1,6	14	26	531
30	108,0						848	1.130	1,6	14	30	707
34	126,0						1.090	1.450	1,6	14	34	907
38	137,0						1.360	1.820	1,6	14	38	1.130
42	146,0						1.660	2.220	1,6	14	42	1.380

On customer request the elongation at break can be reduced.

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