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BT 3870

Terex BT 3870T Boom Truck
The BT 3870 is no longer in production.

Key Features

  • 70 ft (21.3 m) fully synchronous telescopic keel boom
  • 19 USt (17.2 t) maximum lifting capacity
  • Enhanced dual operator control stations
  • Load moment indicator with work area definition
Specification Value
Max Capacity 19 USt / 17.3 t
Max Main Boom Length 70 ft / 21.3 m
Max Tip Height 120 ft / 36.6 m

Operational Ease

  • Enhanced Dual Control Console: Modular, dual-control console allows operation from either side of the machine.
  • Precise Control: Fully proportional controls with precise metering for smooth boom movements.
  • Work Area Definition: The operator can define boundaries for boom rotation, lift and lower. A warning alarm sounds if the boom moves outside the defined area.

Strength and Power

  • Proven Keel Boom Design: Three-section fully synchronized, self-centering design that optimizes strength and delivers performance for high lift capacities at all lift radii.
  • High-Performance Hydraulics: Three-pump system simultaneously provides independent flow to the boom, hoist and slew drive.
  • Outriggers: Heavy-duty outrigger system offers stability and a compact footprint.


  • External Rotation Drive: External rotation drive provides easy maintenance access.
  • Hoses: Hoses for extend/retract are easily accessible if maintenance is required.