NATIONAL CRANE Published 09-06-2019 Control # 691-01 6-11
NBT60L OPERATOR MANUAL MAINTENANCE CHECKLIST
Swing Gearbox
Output Torque........................................................................ 6779.1 N-m (60,000 in-lbs)
Brake Release Pressure........................................................ 12.1 bar (175 psi)
Brake Torque (Static and dynamic)........................................ 350.3 N-m (3100 in-lbs)
Gearbox oil capacity .............................................................. 2.4 l (2.5 qt)
Crane Operating Speeds
(Performance based on full governed RPM and 100° F (37.8° C) hydraulic reservoir temperature.)
Rotation 360°......................................................................... 30 ±5 sec (1.8 ± 0.2 rpm) Adjustment Knob Closed
Boom up -10° to 80° .............................................................. 42 ±10 sec
Boom Down 80° to -10° ......................................................... 38 ±10 sec
Boom Extend/Retract Five Section
Extend (Angle 60°) ........................................................ 180 ±30 sec
Retract (Angle 60°)........................................................ 120 ±20 sec
Outrigger Beam Extend ......................................................... 10 ±3 sec
Outrigger Beam Retract......................................................... 10 ±3 sec
Outrigger Jack Extend ........................................................... 10 ±3 sec
Outrigger Jack Retract........................................................... 10 ±3 sec
Counterweights
NBT60L/NTC60L
Weight #1 .............................................................................. 1,360 kg (3,000 lb)
Weight #2 .............................................................................. 1,360 kg (3,000 lb)
Weight - Combined................................................................ 2,720 kg (6,000 lb)
Anemometer (Optional)
Measurement Range ............................................................ 0 to 241.4 kph (0 to 150 mph)
Radio Range (clear line of sight)............................................ 1402.1 m (4600 ft)
Radio Frequency (FCC) ........................................................ 902 to 928 MHz
Battery
Type .............................................................................. D Cell Lithium 3.6V or Alkaline 1.5V
Lithium Battery Life (Installed) ....................................... 4 years for 40 hr/week or 20 months for continuous use
Alkaline Battery Life....................................................... 1 year for 40 hr/week or 6 months for continuous use
Gateway Router (Crane Cab)
Frequency (FCC)........................................................... 915 MHz
Maximum Line Pull per Layer @ 310.2 bar (4500 psi)
Layer Low Speed KG (lb)
1 7824 (17250)
2 7008 (15450)
3 6350 (14000)
4 5801 (12790)
5 5343 (11780)
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