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Round Link Steel Chains

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Round link steel chains are commonplace in Biomass and EFW primarily on ash handling. Their simple and open construction make them effective in such environments. The main standard is DIN 22252. The chains are available in two categories, a through hardening grade (TH) for high strength for long conveyors with high load and a case hardened grade (CH) for best wear resistance. Sprockets with petal style teeth covering all configurations are also produced in house.

Round Link Chains DIN 22252-2

Round Link Steel Chains
Nominal size	Diameter		Pitch		Width		Gauge Length
Nominal size	d	Tolerance	t	Tolerance	Inside b1 min	Outside b2 max	5 x t	Tolerance
d x t	mm
14 x 50	14	±0.4	50	±0.5	17	48	250	±1.0
18 x 64	18	±0.5	64	±0.6	21	60	320	±1.0
22 x 86	22	±0.7	86	±0.9	26	73	430	±1.0
26 x 92	26	±0.8	92	±0.9	30	85	460	±1.0
30 x 108	30	±0.9	108	±1.1	34	97	540	±1.2
34 x 126	34	±1.0	126	±1.3	38	109	630	±1.3

Through Hardened TH Round Link Steel Chains Case Hardened CH
Nominal size	Reference number	Proof load	Breaking Load	Reference number	Proof load	Breaking Load	Weight
d x t	TH series	min. kN		CH series	max. kN		kg/m
14 x 50	38/14X50/TH	185	246	38/14X50/CH	89	148	4
18 x 64	38/18X64/TH	305	407	38/18X64/CH	165	275	6.6
22 x 86	38/22X86/TH	456	608	38/22X86/CH	220	365	9.5
26 x 92	38/26X92/TH	637	850	38/26X92/CH	308	510	14
30 x 108	38/30X108/TH	848	1130	38/30X108/CH	400	680	18
34 x 126	38/34X126/TH	1090	1450	38/34X126/CH	425	710	22.7

TH grade: 23 MnNiCrMo5-4 (DIN 17115) as DIN 22252-2.
CH Grade: CrNi/CrMo options High surface hardness 64Hrc carburising depths 0.1-0.14 diameter.

Twin outboard chain systems DIN 22253

Flight bar connectors with single or double hole are available for use in conjunction with chain for twin strand operation. Fabricated or forged flight bars are also produced to customer standards.

Twin outboard chain systems
Nominal size	Reference number		A	B	C	D	E	E1	F	G	H	T	d	Weight
Nominal size	Reference number		A	B	C	D	E	E1	F	G	H	T	d	PL	WP
d x t	Padless PL	Wear Pad WP	mm											kg
14 x 50	40/14X50	40/14X50/WP	50	51	19	32	14	29	27	78	18	15	17	0.46	0.7
18 x 64	40/18X64	40/18X64/WP	64	55	22	43	18	40	45	100	37	19	21	1	1.25
22 x 86	40/22X86	40/22X86/WP	86	75	26	52	22	46	58	132	44	23	25	1.6	2.6
26 x 92	40/26X92	40/26X92/WP	92	78	30	58	26	56	59	147	44	27	28	2.8	3.8
30 x 108	40/30X108	40/30X108/WP	108	96	34	70	30	59	60	172	44	32	31	4	5.2
34 x 126	40/34X126	40/34X126/WP	126	110	38	70	34	35	65	198	52	36	37	5.8	7.3

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