NT Series Rockbreaker Systems

 

NT-340NT-draw-340
 
Both high strength and performance are top priorities at stationary crushing plants. This system features maneuverability, durability and reliability.
  • Massive swing frame
  • Large base for support
  • Oversize pins and hardened steel bushings for long life

Features & Benefits:

  • High strength steel (bent, 4-plate) construction 65 ksi tensile strength; 50 ksi yield strength for longer service life
  • Reinforced pivot and mounting pin joints from improved durability
  • Hardened steel bushings in pivot joints and larger diameter pivot pins provide reduced bearing pressure and increased service life
  • Thicker pedestal base plate – 1.0” (25 mm)
  • Pedestal mounting bolt pattern matches TM-S series for ease and reduced expense of replacement
  • Increased cross sectional strength of boom and dipper where high stress is realized
  • Common cylinder for hoist (lift), crowd (stick) and curl (tilt) functions
  • Tilt & Lift valve stand for improved serviceability

Coverage Drawing & Data

General Specifications:

Power Packs:

  • 50 HP & 60 HP power pack for BX20 & BX30 respectively
  • 40 HP & 50 HP power pack for BX20 & BX30 respectively in lighter applications
  • High efficient grade main pump drive motor
  • Premium efficient (IEEE841) main pump drive motor (optional energy efficient)
  • Main electric motor altitude acceptance limit: 3,280 ft. (1000 m)
  • High Altitude: motor impeller charge kit > 5,000 ft (1,500 m); and
  • High Altitude: motor altitude deration, provided in 1000 m increments > 3,280 ft. (1000 m) up 16,400 ft. (5000 m)
  • Continuous oil circulation valve for high duty & temperature applications
  • High/low temperature sensor
  • Immersion heater – 2kW (circuit breaker & contactor optional with starter panel)
  • Motor Starter panel (40, 50, 60, 100 or 125 HP mounting & wiring also optional)
  • Remote power pack start / stop panel with indicator switches and lamps
  • Air-to-oil Cooler (std. for BX30 & larger units; opt. for BX20 & smaller units)
  • Water-over-oil Cooler
  • Cold weather conversion kit (with dual immersion heaters, heat tape, etc.)
  • 10 ft. (3 m) Supply hoses –optional longer lengths up to 25 ft. (7.6 m)

Control Systems:

  • Stand-mounted electro-hydraulic joystick remote controller package
  • Portable electro-hydraulic remote joystick controller package
  • Secondary Stand-mounted electro-hydraulic remote joystick controller package
  • Hand-held Radio Remote (transmitter-receiver) joystick controller package
  • 30 ft. (9.1 m) remote control cable
  • > 30 ft. (9.1 m) remote control cable – available up to 100 ft. (30 m)
  • 100 to 200 ft. (30 – 60 m) long distance cable
  • 200 to 400 ft. (60 – 80 m) long distance cable

Grease Systems:

  • 2-grease system: moly / lithium for boom, chisel past for hammer
  • Individual / point-to-point manual greasing of boom and hammer
  • Manual-Centralized Grease system; Hydraulic auto lubrication system
  • Pneumatic auto lubrication system

Other Option Specifications:

  • Anti-Lunge provision
  • Anti-Blank fire provision
  • Fire suppression system (Ansul: manual, “Automan” or “Check-fire”)

 

NT ROCKBREAKER SYSTEMS OPERATING WEIGHTS & DIMENSIONS

Boom Model

Operating Weight
(Boom Only)

lbs (kg)

Operating Weight
(Complete System)

lbs (kg)

Length x Width*

in (cm)

Working Length**

in (cm)

Base (LxW)

in (cm)

Breaker Model
Range

NT12

8,381
(3,800)
10,396 to 12,616
(4,715 to 5,722)
201.9 x 44.5
(5,128 x 1,130)
143.9
(3,655)
53.0 x 44.5
(1346 x 1,130)
BX10 thru BX30

NT16

8,633
(3,915)
10,648 to 12,868
(4,829 to 6,434)
223.9 x 44.5
(5,687 x 1,130)
165.9
(4,214)
53.0 x 44.5
(1346 x 1,130)
BX10 thru BX30

NT20

8,886
(4,030)
10,900 to 13,120
(4,943 to 5,950)
273.1 x 44.5
(6,937 x 1,130)
215.1
(5,464)
53.0 x 44.5
(1346 x 1,130)
BX10 thru BX30

NT24

9,140
(4,145)
11,152 to 12,254
(5,058 to 5,557)
336.0 x 44.5
(8,534 x 1,130)
274.1
(6,962)
53.0 x 44.5
(1346 x 1,130)
BX10 thru BX20

* less hammer
** swing pivot to dipper stick / hammer mounting pin (on-center) dimension

 

 

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