Bar bending machines consist of an electric motor, gearbox, and extended shaft to bend rebar. There are different types including portable, electric, hydraulic, and automatic benders. Proper operation of bending machines requires training operators, inspecting the machine, keeping the work area clean, and using safety equipment. Operators should not exceed the machine's capacity, operate without safety guards, or place body parts near moving parts to avoid injury. Following manufacturers' safety instructions and wearing protective equipment can help safely operate bar bending machines.

1. BAR BENDING MACHINE DO’S &DON’T
BAR BENDING MACHINE DO’S &DON’T

2. A bending machine is a forming machine
tool .Its purpose is to assemble a bend on a
work piece
Bar bending machine is consist of electric
motor, coupling, circular plate, worm gear drive,
extended shaft.
Electric motor transmits power to gear
box where speed is decreased and torque
is increased

3. How Many Types Of Bar
How Many Types Of Bar B
Bending
ending M
Machine
achine
Portable Rebar Bender
Electric Rebar Bender
Hydraulic Rebar Bender
Automatic Rebar Bender

4. BENDING MECHINE OPERATIONS
BENDING MECHINE OPERATIONS
DO’S
Before operating the bending machine read
and understand its manual instructions.
Every new operator should be appropriately
trained before using the machine for the first
time, preferably by an experienced engineer
well-versed in bending machine safety
precautions
Every new operator should be appropriately
trained before using the machine for the first
time, preferably by an experienced engineer
well-versed in bending machine safety
precautions
Leveled foundation to be ensured
1.5mx1.5mx. X150mm .
This correct placement will prevent
contact with the sheet with the operator,
avoiding injury.

5. BENDING MECHINE OPERATIONS
BENDING MECHINE OPERATIONS
File metal burrs properly, and avoid
touching metal edges or cuts, even while
wearing gloves.
DO’S
The work surface should be clean and free
of any scrap metal. Paying attention to
where your hands are during operation
File metal burrs properly, and avoid
touching metal edges or cuts, even while
wearing gloves.
The machines should be inspected regularly
before each operation, especially before the
initial startup.

6. BENDING MACHINE OPERATION
BENDING MACHINE OPERATION
Before running the machine need to run a
free trial and error for two minutes.
To understand if there is any problem with
the bending machine.
DO’S
Checking block- help to
avoiding possible
deformations of the rod can
be used with brad up to 20
mm diameter.
Stirrup bending pin to be
positioned on the turning
plate for the production of
stirrup .can be use with
bars up to 12 mm dia.

7. BENDING MACHINE OPERATION
BENDING MACHINE OPERATION
The sheet metal should be placed parallel to
the bending machine before starting operation.
Chair should be body posture oriented.
The bush positioned on the central hole of the
plate corresponds to the curving radius.To use
bar from 15 mm diameter.
It is important that the diameter of the bush is
at three (3) times bigger compared to the
diameter of the rod to be bent.
DO’S
Three bush holding pins in special hardened
and cemented steel to be positioned on the
work top together with bushes ,with the
function to support the effort coming from the
phase of bending
The bush positioned on the central hole of the
plate corresponds to the curving radius.To use
bar from 15 mm diameter.
It is important that the diameter of the bush is
at three (3) times bigger compared to the
diameter of the rod to be bent.

8. Number Rebar Bending Chart
Number Rebar Bending Chart
Specification Mechanical Bending NBM 40
Diameter of
Bars in MM
36 32 25 20 16 12 10 8 0
No of round
bars of
45kg/mm ²
1 1 2 2 3 3 4 5 0
No ofTMT bars
of 65kg/ mm ²
- 1 2 2 2 2 3 4 0

9. BENDING MACHINE OPERATION
BENDING MACHINE OPERATION
DON’T
DON’T
The purpose of an emergency push button is
to stop the machinery quickly when
there is a risk of injury or the workflow
requires stopping
Do not operate the machine if
emergency switch is not working
The purpose of an emergency push button is
to stop the machinery quickly when
there is a risk of injury or the workflow
requires stopping
Do not Leave the any loose
material on the bending table
when machine is not use.

10. BENDING MACHINE OPERATION
BENDING MACHINE OPERATION
DON’T
DON’T
Do not Stand in the direction
of Rebar Rotation
Do not Bend more than
capacity of machine.

11. BENDING MACHINE OPERATION
BENDING MACHINE OPERATION
DON’T
DON’T
Do not Operate
the machine with
out keeper Plate
Do not Operate
the machine with
out keeper Plate

12. Understand the Manufacturer's safety tips
All rebar benders come with a manufacturer user manual.
A diagram featuring all functional parts of the tool
Work area and electrical safety instructions
Personal safety instructions
Power tool use and care
Service and maintenance
Operational instructions
Parts list
Safety for
Safety for Bender’s
Bender’s
Understand the Manufacturer's safety tips
All rebar benders come with a manufacturer user manual.
A diagram featuring all functional parts of the tool
Work area and electrical safety instructions
Personal safety instructions
Power tool use and care
Service and maintenance
Operational instructions
Parts list
Training for Skill Development
Training for Skill Development and Hazards Precautions
and Hazards Precautions

13. Be careful about your hands and fingers
Be careful about your hands and fingers
keep hands away from the pivot shoe, cutting blocks, and rollers while
operating. Last, do not overreach. Keep proper footing and balance at all times.
Warm up the machine before Use It
it creates less stress on the moving parts and allows it to perform its job
safely without added stress to the part.
Place the Bar Properly on the Bender Platform
Select the correct bending angle before you place the bar on the platform.
Incorrect placement can cause the bar to project at the wrong angle and
strike you.
Select the correct bending angle before you place the bar on the platform.
Incorrect placement can cause the bar to project at the wrong angle and
strike you.
Correct Personal Protective Equipment
•Dust mask
•Shatterproof glasses or goggles
•Non-skid safety shoes
•Hard hat
•Hearing.
•Form-fitting, comfortable clothing that is not loose
•Glove

15. A presentation By Soumen Makar.
(OHSE Member)