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4812A Jacking Frame

4812A Jacking Frame

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4812A Jacking Frame

Product catalog summary

Specifications

Dimensions: 84 x 137 x 84 in. (2,134 x 3,480 x 2,134 mm)
Assembly Weight: 19,000 lbs. (8,636 kg)
Staging Position: 20 in. (508 mm)
Cylinder Stroke: 33.5 in. (851 mm)
Operating Pressure (Max.):
- Jacking: 6,000 psi (41,369 kPa)
- Rotation: 5,000 psi (34,474 kPa)

Features

Includes frame, drive swivel adapter, alignment adapter, make-up tool, and wrench set.
Two-speed hydraulic operator-controlled thrust block advancement.
One-stage operation provides 67 inches (1,702 mm) of continuous thrust block advancement.
Dual staging operation allows 87 inches (2,210 mm) of thrust block advancement.
Dual rotation pressure control (0 to 10,500 ft-lbs, 0 to 20,000 ft-lbs).
Hydraulic pressure gauges for monitoring jacking, auger rotation, and cutter bit system pressures.
Quick coupler connections with lock for easy and secure hydraulic hose installation.
Jacking functions 0 to 26 gpm @ 6,000 psi.
Rotation functions 0 to 60 gpm @ 5,000 psi.
Independent cutter bit function 50 gpm @ 5,000 psi.
Independent control for hydraulic make-up tool.
Powered Cutter Head (PCH) hydraulic control package included.
Four adjustable legs with leveling screws for ease of frame height adjustment and leveling.
Designed to work in 144” minimum ID or trenchbox shafts.
Independent jacking, rotation & cutter bit operation.
Capable of installing pipe up to 48” OD & two meters in length.

Additional Specifications

Elevation: 39 to 45 in. (991 to 1,143 mm) from shaft floor to drive center
Operating Grade (Max.): 10%
Rotational Torque: 10,500/20,000 ft-lbs (14,238/27,120 N•m)
Jacking Force: 100/200 Ton (91/181 mt)
Pull Back Force: 100 Ton (91 mt)
Hydraulic Motor Speed: 0 - 38 rpm

Thrust Frame - 4812A

Part No. FA40034F
GBM_4812, FA40034F
GBM_4812A, FA40034F

Hydraulic System

Quick couplers connect to pressure, return, load sense, case drain hydraulic hoses from the GBM Power Pack, along with the PCH hydraulic hoses.
Drive swivel adapter with fluid connector and alignment adapter.
Low pressure valves for hydraulic make-up tool, push plate brake, and staging functions.
High pressure valves for jacking and rotation functions.
Hydraulic pressure gauges for monitoring thrust, rotation, and cutter bit system pressures.
Four cylinders provide up to 200 ton thrust capacity.
Operator control center for ease of operating and monitoring of system pressures.

Catalog excerpts

High pressure valves for jacking and rotation functions. Hydraulic pressure gauges for monitoring thrust, rotation and cutter bit system pressures. The quick couplers connect to the pressure, return, load sense, case drain hydraulic hoses from the GBM Power Pack, along with the PCH hydraulic hoses. Low pressure valves for hydraulic make-up tool, push plate brake and staging functions. Drive Swivel Adapter With Fluid Connector And Alignment Adapter Four cylinders provide up to 200 ton thrust capacity. Operator control center for ease of operating and monitoring of system pressures. 21 GBM_4812A,...

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4812A Jacking Frame

4812A Jacking Frame

Catalog excerpts

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