БМК
Baltic Machine-building Company
Tel./fax: +7 (812) 331-08-40; +7 (812) 331-39-70
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Bender 51

Bending machine universal pneumatic, model 51

Bender 51

Bending machine is oriented:

Mandrel and without mandrel
bending of tubes (pipes)

and profiles

High quality  bends in 3 axes
by coiling method 

Abilities of bending machine

  • 3 axes control (A;L;R)
  • Saves form of tube section in place of bend

Diagram of dependence of bending radiuses (CLR) from external tube diameter and walls thickness



Bending machine allow to make bend in range of bending
radiuses values, located under line of wall thickness of
tube (S)

Notation conventions
D - external tube diameter, mm
S - tube wall thickness, mm
CLR - bending radius

Positioning Device

  Clamp of tube (pipe) end by 
lathe chuck.



Allows to change bending
plate (Tube rotation in
space, axis  R) and
exactly fix straight piece
size between bends
(axis  L)

Tooling for bending machine

For mandrel bending
by coiling method



Consist of 4 elements:
  • Former
  • Clamp
  • Pressure die
  • Mandrel

Bending machine technical data

Maximum tube (pipe) diameter, mm  
   Steel 40
   Aluminium, brass, copper 60
CLR, мм 27-170
CLR min. 1,5 D
Bending angle, degrees 0-180
Accuracy  
   Bending angle (A), degrees 0,5
   Tube advance (L), mm 0,5
   Tube space rotation angle (R), degrees 2,5
Probability of parts repetition, % 99
Time of one bend, sec. 4-10
Space tube rotation (R) Semiautomatic
Advance up to next bend (L) Semiautomatic
Clamp Automatic
Synchronization of position table in bending axis Automatic
Mandrel moving Automatic
Return in bend starting position Automatic
Mandrel lubrication Automatic
Programmed by rests (single volume of memory) in axes  
   А 6
   L (on running meter) 10
   R 6
Productivity, bends / hour  
   Work with whole tube 100-150
   Work with billet 200 и более
Energy - compressed air, kg/ sm? 6-8
LxHxB, mm 1700x1100x760
Weigh, kg 450

Basic complete set of bending machine

  • Bending machine
  • Automatic tube clamp
  • Mandrel lubrication system
  • Mandrel moving system
  • Position table 5 m
  • Packing
  • Operating manual
  • Training to Customer's personnel

Advanced options for bending machine

  • Modification (decrease or extension) of position table length
  • Delivery of tooling
  • Delivery of compressor 500 liters /min, receiver 200 liters 
  • Machine and tooling modification for bending without straight
    pieces between bends
  • Bending of M- type parts
  • Extension of quantity of mechanical memory rests
  • Setting of mechanism for bending tubes by rolling method
  • machine adaptation for production of specific parts (more
    freedom for bend tube movement)
  • Setting of cutting device

The similar models of bending machines:


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