For applications requiring “moderate” lifting forces, we offer lifting bags with 3 bar (43 PSI) inflation pressure.

These bags are very thin (12mm/0.47”) and due to the vulcanization manufacturing process the final product is highly homogeneous and guarantees a long service life (more than 10 years in some cases).

Technical information

NPVC rubber coated fabric

  • Excellent UV resistance
  • Excellent Ozone resistance

Options :

  • Vamac : for temperature up to 140°C
  • FDA additional coating: for “food industry” application

Vulcanization under vacuum in an autoclave

Dimensions restrictions:

  • Square models : 2500 * 2500 mm
  • Rectangular models : 5500 * 2500 mm
  • Circular models dia. : 2500 mm

Because of the assembly process, a “dead area” (= no inflation zone) is located around the edges of the lifting bag.

This dead area has to be deducted from the working surface of the bag before calculating the available lift force.

Inflation:

gonflage vérin

Threaded Inflation stems position 1/4″ ou  3/4″

Schrader Valve

Schrader Valve

The inflation stem can be placed on the face or the edge. If on the edge, a short tube of copper with a quick connect coupler at the end will be provided; or an integrated steel insert where a stem will be mounted.

Note : The inflation stem located on the edge will increase the “dead area” dimensions.

 

 

 

Miscellaneous:

Maintaining velcro for lifting bags

Maintaining Velcro

Threaded insert - Pronal Lifting Bags

Threaded insert

Lifting bag material protection

Additionnal surface coating

 

 

 

 

 

Pronal can manufacture several bag shapes such as:

Cubical

Cubical

Parallelepiped

Parallelepiped

Cylindrical

Cylindrical

Circular

Circular

3D doughnut

3D doughnut

Flat doughnut

Flat doughnut

 

 

 


Other shapes on request

3 bar / 43 PSI maximum
  • Applying braking force in paper manufacturing machine
  • Clamping of reels for handling
  • Lifting and moving theater set
  • Handling (clamping) of bottles (neck)
  • Press muds in water treatment station
  • Handling delicate parts
  • Roller braking

CONTACT US !

Galerie

Pronal low pressure lifting bags implementation