TECHNICAL PARAMETERS
TB20J Plus Operation Manual 21
© Feb. 2023
Table 4-1 TB20J Plus specifications(Continued)
ITEM
TB20J Plus (METRIC) TB660J Plus (IMPERIAL)
Max. allowable relative humidity
90%
Storage environment
Stored at -20℃ to 50℃ (-4℉ to 122℉) in a well-ventilated environment with
90% relative humidity (20℃ [68℉]), and away from rain, sun, corrosive
gas, inflammables and explosives.
Note:
a) The platform height plus the operator height (taken as 2m [6ft 7in]) is the working height.
b) The maximum horizontal reach plus the arm length of the operator (taken as 0.6m [1ft 11in]) is the maximum horizontal
working envelope.
c) The ground bearing data is approximate, without considering different options, thus it is applicable only in adequately safe
conditions.
d) In different areas, hydraulic oil, engine oil, coolant, fuel and lubricant should be added in accordance with the environmental
temperature.
e) In cold weather, auxiliary devices are needed to start the machine.
f) Rated platform load capacity refers to the maximum allowable load on the platform, including the weight of persons,
materials, tools, accessories and other objects.
4.2 FUNCTION SPEED
Table 4-2
ITEM TIME
Raise main boom 65～75s
Lower main boom 65～75s
Rotate turntable (360°)-stowed
78～86s
Rotate turntable (360°)-fully
extended
139～179s
Extend main boom 58～66s
Retract main boom 53～62s
Rotate platform (160°)
18～22s
Level platform upward
50～60s
Level platform downward
40～50s
Raise jib
32～38s
Lower jib
22～28s
Max drive speed (30m [98.4ft])-
stowed
20～25s
Max drive speed (30m [98.4 ft])-
working
88～108s
Table 4-2 (Continued)
ITEM TIME
Brake distance at maximum drive
speed
0.8～1.2m
（2.62～3.9ft）
a) The function speed depends on the start and end
point of the movement rather than the controls/
switches.
b) The test results of drive speed vary with tires of
different specifications.
c) All the speed tests should be conducted from the
platform controller. The test results will differ if tested
from the ground controller.
d) All the tests should be conducted with the
hydraulic oil temperature higher than 50～60℃ (122
～140℉). If the hydraulic oil temperature is too low,
the test results will be affected.
Test requirements:
Raise/lower main boom : With the main boom fully re-
tracted, raise the main boom from the lowest to the high-
est and lower the main boom from the highest to the
lowest for two times.
Rotate turntable : With the boom centered, rotate the
turntable through two full cycles.
Extend/retract main boom : With the main boom fully
raised, extend the main boom from fully retracted to fully
extended position, and retract the main boom from fully
extended to fully retracted position. Test twice.
Rotate platform : With the platform horizontal, rotate
the platform from the leftmost to the rightmost, and ro-
tate the platform from the rightmost to the leftmost. Test
twice.
Raise/lower jib : With the platform horizontal, raise the
jib boom from the lowest to the highest, and lower the jib
boom from the highest to the lowest. Test twice.
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