Rough steel tyres for tram-wheels

Material
Electric steel, with the folowing chemical composition and mecanichal characteristics

Chemical composition [%]
P S P+S C Mn Si Cu
max 0,60 max. 0,6 max. 0,1 0,55 - 0,65 0,50 - 0,90 0,15 - 0,40 max. 0,35

Mechanical characteristics

Tensile strength [N/mm˛]

Elongation after 

765 - 883

14 - 8

Dimensions, weight and limit tolerances of the rough tyre
Dimensions and limit tolerances [mm] Weght [Kg/pcs.]

Download Drawing

D +4/0 d 0/-4 B +4/-1
675 555 112 125
680 540 90 114
680 540 95 125
690 545 78 105
690 545 85 112
696 542 100 140
696 546 90 130
700 545 90 140
720 550 90 145
740 540 90 160 Dimensions and limit tolerances [mm] Weght [Kg/pcs.]
745 518 92 185
760 520 86 185 D +4/0 d 0/-4 B +4/-1
810 672 88 125 875 650 100 240
840 660 130 245 875 700 85 165
840 665 90 170 875 704 74 145
870 670 90 190 890 670 92 220
870 670 95 205 905 685 90 225
870 690 90 182 915 700 120 290
Note: Depending on the customer`s request, on the basis of their documentation, there can be also manufactured other tyre sizes.

Shape deviations
According to UIC 810 - 2
Out-of-roudness max. 3 mm
Eccentricity between the external surface revolution and the internal one max. 3 mm
Taper of the external and internal surface revolution max. 3 mm
Flatness of the side surfaces max. 3 mm

Delivery state, delivery
Delivery state Delivery
Rough rolled, normalized (N) Without packing and unprotected to corrosion
Rough rolled, hardened and tempered (T)