Equipment

MNB-50 / Directional rod pusher


This is a small-sized unit, with the pulling capacity of 50 tons, for construction of average-diameter pipelines in urban environment.

Simple, versatile and reliable ground-piercing tool with the pulling power of 50 tons. Modular mounting system enables operation in standard rectangular trench box or a special OR-1.5 shoring system for depths up to 5.5 meters, as well as directly in a 1500 mm well.

MNB-50 equipment set is provided with hydraulic power pack with connections for the machine’s hydraulic power cylinder, as well as various hydraulic instruments (such as jackhammer, pump, circular saw, chain saw, jig saw, drill, nut runner or valve rotation device).

Application:

  • Installation of new pipes up to 315 mm in diameter at the distance of up to 150 m
  • Trenchless replacement of old pipelines up to 315 mm in diameter by means of static pipe bursting

 Distinctive features

The MNB-50 unit’s principal competitive advantage is its wide range of functions. Minimal excavations for pits, with the minimal disruption of surrounding areas, make the MNB-50 unit particularly useful in confined urban conditions.

MNB-50 works reliably under severe winter conditions in Russia, Belarus, Ukraine and Kazakhstan. MNB-50 is the most popular unit in its class due to its good combination of price, versatility, scope of applications and small size.

Options for the MNB-50 unit installation and operation:

    Mnb50 zIMG 5203 hydrostation.jpg
  • from the pit (3 m long, 1 m wide);
  • from OR-1,5, the formwork manufactured by MEMPEX JSC (2,5 m long, 2 m wide);
  • from the existing well (Ø 1500 mm).

No bentonite mixtures required.
Soil types: up to and including the 3rd category.

Specifications:

 
General specifications:

Monitoring device:

Radar RD – 385 L

Operating temperature range:

-20° ... +40°С

Pullingcapacityforpipe-jacking:


37 tons

Pulling capacity for pipe pulling into position:

50 tons

Hydraulic cylinders:

1 pc.

Rated operating pressure of hydraulic cylinders:


20 MPa

Total weight of the basic equipment (bars not included):


1100 kg

Hydraulic unit:

Motor:

Honda GX 690 (gasoline)

Power:

17,7 кW

 
  
Overall dimensions:

Hydraulic unit:
  Length    1500 mm
  Width    630 mm
  Height   780 mm


Box:
  Length     2750 mm
  Width   920 mm
  Height   1200 mm


Bar:
  Length     1020 mm
  Diameter   48 mm
  Weight      14 kg

 

 

Key parameters:

Drilling  parameters:
- Pipe-jacking length: 120 m*.
- Diameters of pipes to be laid:
  63 mm, 90 mm, 110 mm, 160 mm, 225 mm, 315 mm.
- Personnel required for works: 3 persons.

Worn pipeline replacement parameters:
- New pipeline diameter**: 
  110 mm, 160 mm, 225 mm, 315 mm.
- Minimal old pipeline diameter:  100 mm.
- Replaced pipeline length:  150 m.
- Personnel required for works: 3 persons.

* - drilling parameters can vary and can be higher or less: they depend on geology, working team skills, soil moisture content etc.
** - with the same diameter or with higher or smaller diameter.

Pipeline types:
- Water and sewerage
- Gas
- Conduits for cables used for various purposes


Replaced pipeline material:
- Cast iron
- Reinforced concrete
- Ceramics
- Asbestos
- Steel


New pipeline material:
- Polyethylene
- Steel

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Distinctive features:

  • versatility;
  • easy operation;
  • reliability;
  • small overall sizes;
  • low cost.

The MNB-50 unit’s principal competitive advantage is its wide range of functions.

Minimal excavations for pits, with the surrounding areas remaining maximally untouched, make the MNB-50 unit especially appropriate for confined urban conditions.

MNB-50 works reliably under severe winter conditions in Russia, Belarus, Ukraine and Kazakhstan.

MNB-50 is the most popular unit in the relevant class, due to its good combination of price, versatility, scope of application and small sizes.


MEMPEX JSC offers new applications for MNB-50:

Since November 2009, the MNB-50 equipment kit is provided with the new hydraulic unit; not only the machine’s hydraulic power cylinder can be connected to it, but also various hydraulic equipment (such as a jackhammer, a pump, a circular saw, a chain saw, a jig saw, a drill and even a nut runner or a valve rotation device).

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