2022.3-0000010 OM
172
Table 4.1 – Rates of loads on tractor single tires for selection of operational modes at
various speeds and tire inner pressures
Spee
d,
km/h
Load on a single tire, kg, and a corresponding pres-
sure, kPa
Rate of solution
for one tire, l
Tire stan-
dard size
80
100
120
140
160
180
200
240
(at
75%
filling)
(at
40%
filling)
11.2R24
10*
20
30
40
1275*
1045
905
850
1395*
1140
995
930
1515*
1240
1080
1010
1650*
1350
1175
1100
1770*
1450
1260
1180
75
40
420/70R24
10
20
30
40
1875
1720
1500
1400
2050
1845
1605
1500
2230
2030
1765
1650
2405
2210
1925
1800
2585
2335
2035
1900
2850
(190
)
183
97
480/65R24
10
20
30
40
1980
1870
1630
1520
2170
2000
1780
1670
2350
2225
1930
1810
2530
2390
2080
1950
2680
2530
2200
2060
3090
(200
)
205
109
580/70R42
10
20
30
40
4250**
3970**
4750
4415
3845
3590
5175
4830
4205
3930
5595
5225
4550
4250
5970 6375
507
270
11.2R42
10*
20
30
1250*
1070
895
1425*
1220
1020
1595*
1365
1140
1735*
1485
1240
1860*
1600
1335
2005*
1715
1435
2135*
1830
1525
2380*
2040
1700
135
72
*-
inner pressure shall be increased by 25 %
** - values can be applied only for outer tires when tires are used in a twinned vari-
ant.
Notes:
1. Pressure shall be set in “cold” tires.
2. Performing operations, requiring large pulling force on the hook, set the pres-
sure as for the speed of 30 km/h. When performing transport operations on roads with
solid surface increase the pressure by 30 kPa.
3. Tractor operation with twinned tires is permitted only at the speed of 20 km/h.
4. Total loading capacity of twinned tires shall not exceed the loading capacity of a
single tire by more than 1,7 times;
5. When twinning, make sure the pressure of outer tires is 1,2 – 1,25 times lower,
than the pressure of inner tires.
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