U20-3, U25-3 WSM Machine body (Service section)
II-S-53
f. Variable track (U20-3)
[1] Dimensional view
[2] Service data
(
Items different from standard specifications only)
New-model delivery guideline
Item Movement Unit
Reference
value
Allowable range Remarks
Overall width (retracted) mm 1300 1287~1313
Overall width (extended) mm 1500 1485~1515
Machine weight Canopy kg 2030 1929~2132
Full fuel·Specified lubricant
amount
Machine weight Cabin kg 2220 2109~2331
Full fuel·Specified lubricant
amount
Crawler overall width Overall width (retracted) mm 1300 1274~1326
Crawler overall width Overall width (extended) mm 1500 1470~1530
Minimum road clearance mm 164 159~169 Track frame center
Blade size Stretchable width mm 1300 1295~1305
Blade size Retractable width mm 1500 1495~1505
Blade size Height mm 293 283~303
Blade upper limit mm 333 283~383
Blade lower limit mm 277 227~327
Blade approach angle ° 33.8 30~37
Dozer speed Top(ground~upper limit) Sec 1.1 0.8~1.4
Dozer speed Top(lower limit~upper limit) Sec 2.2 1.9~2.5
Dozer speed Top(upper limit~ground) Sec 1.5 1.2~1.8
Dozer speed Top(upper limit~lower limit) Sec 2.8 2.5~3.1
Swiveling angle on slope L·R ° 23.5 21.5Z
Front attachment horizontal,
crowded, maximum rpm
Swivel block performance Engine idling L·R ° 21 30X Lever unlocked
Swivel start-up speed L·R Sec 1.95 1.7~2.3
Track stretch lever operating force Up N(kgf) 38(3.88) 33~43
Track stretch lever operating force Down N(kgf) 39(3.98) 34~44
Track stretch lever stroke Up·Down mm 37 27~47
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