FAS-US EXTRA

Wear resistant round link chains.
Hardened, special.

Characteristics
Round link chains of increased strength and higher wear resistance, particularly at link crowns. The chains are to be used, according to specialist expertise, in the performance conditions where the standard chains of grade C, acc. to DIN 22252 and/or PN-G-46701, have decreased durability as a result of: fast surface wear in operating chain link crowns, fast increase in deflection value and, as a result, the need of chain replacement because of non-cooperation with sprockets. It is advised to use FAS-US EXTRA chains with FASING flight bars of appropriate design and parameters (complete chain assembly). FAS-US EXTRA chains are manufactured according to the technical and production process, DIN 22252 and/or PN-G-46701 standards and FASING Technical Requirements.

Application
FAS-US EXTRA chains of grade 11≥1100 MPa are used in mining chain conveyors, AFCs and other types of conveyors, gangway loaders in road headers; and in the environment with stone presence.
Operation durability of FAS-US EXTRA chains under the following conditions i.e. proper wear degree, fitting flight bar and sprocket design, proper control of initial chain tension, is two, three and more times longer in comparison to the standard chains of grade C, acc. to DIN 22252 and/or PN-G-46701, and 20-25% longer than the durability of FAS-US chains.

**Dimensions and mechanical properties**
Chain size d×t(p) [mm]	b₁ max. [mm]	b₂ max. [mm]	Test force [kN]	Breaking force [kN]	Deflection f min. [mm]	∼ Weight [kg]
14×50	17	48	215	340	14	4.0
18×64	21	60	360	560	18	6.6
19×64/64.5	22	63	400	625	19	7.4
22×86	26	73	530	840	22	9.5
24×86/87.5	28	79	630	995	24	11.6/11.5
26×92	30	85	740	1 170	26	13.7
30×108	34	97	990	1 555	30	18.0
34×126	38	110	1 270	2 000	34	22.7
38×126/137/146	42	122	1 550	2495	38	30.1/29.0/27.6

Unit elongation at test force max. 1.4%. Unit elongation at breaking force min. 14%.