Manitowoc Grove RT770E - Page 103

2-63
GROVE
RT770E HYDRAULIC SYSTEM
2
Published 11/26/2014, Control # 447-05
Table 2-5 Boom Drift Chart (Cylinder length change in inches)
Table 2-6 Boom Drift Chart (Cylinder length change in millimeters)
Coeff. = 0.00043
(in
3
/in
3
/ °F)
STROKE Temperature Change (°F)
(FT.)102030405060708090100
5 0.260.520.771.031.291.551.812.062.322.58
10 0.52 1.03 1.55 2.06 2.58 3.10 3.61 4.13 4.64 5.16
15 0.77 1.55 2.32 3.10 3.87 4.64 5.42 6.19 6.97 7.74
20 1.03 2.06 3.10 4.13 5.16 6.19 7.22 8.26 9.29 10.32
25 1.29 2.58 3.87 5.16 6.45 7.74 9.03 10.32 11.61 12.90
30 1.55 3.10 4.64 6.19 7.74 9.29 10.84 12.38 13.93 15.48
35 1.81 3.61 5.42 7.22 9.03 10.84 12.64 14.45 16.25 18.06
40 2.06 4.13 6.19 8.26 10.32 12.38 14.45 16.51 18.58 20.64
45 2.32 4.64 6.97 9.29 11.61 13.93 16.25 18.58 20.90 23.22
50 2.58 5.16 7.74 10.32 12.90 15.48 18.06 20.64 23.22 25.80
55 2.84 5.68 8.51 11.35 14.19 17.03 19.87 22.70 25.54 28.38
60 3.10 6.19 9.29 12.38 15.48 18.58 21.67 24.77 27.86 30.96
Length change in inches = Stroke (Ft.) X Temperature Change ( °F) X Coeff. (in
3
/in
3
/ °F) X 12 in/ft
Coeff. = 0.000774
(1/ °C)
STROKE Temperature Change (°C)
(m) 5 10 15 20 25 30 35 40 45 50 55
1.5 5.81 11.61 17.42 23.22 29.03 34.83 40.64 46.44 52.25 58.05 63.86
3 11.61 23.22 34.83 46.44 58.05 69.66 81.27 92.88 104.49 116.10 127.71
4.5 17.42 34.83 52.25 69.66 87.08 104.49 121.91 139.32 156.74 174.15 191.57
6 23.22 46.44 69.66 92.88 116.10 139.32 162.54 185.76 208.98 232.20 255.42
7.5 29.03 58.05 87.08 116.10 145.13 174.15 203.18 232.20 261.23 290.25 319.28
9 34.83 69.66 104.49 139.32 174.15 208.98 243.81 278.64 313.47 348.30 383.13
10.5 40.64 81.27 121.91 162.54 203.18 243.81 284.45 325.08 365.72 406.35 446.99
12 46.44 92.88 139.32 185.76 232.20 278.64 325.08 371.52 417.96 464.40 510.84
13.5 52.25 104.49 156.74 208.98 261.23 313.47 365.72 417.96 470.21 522.45 574.70
15 58.05 116.10 174.15 232.20 290.25 348.30 406.35 464.40 522.45 580.50 638.55
16.5 63.86 127.71 191.57 255.42 319.28 383.13 446.99 510.84 574.70 638.55 702.41
18 69.66 139.32 208.98 278.64 348.30 417.96 487.62 557.28 626.94 696.60 766.26
Len
g
th chan
g
e in mm = Stroke
(
m
)
X Temperature Chan
g
e
(
°C
)
X Coeff.
(
1/ °C
)
X 1000 mm/m