Expandable Mandrels
Expandable bars allow you to fit inside your mandrel for winding and unwinding your coils.
As a manufacturer, MBC offers expandable bars ranging from 1“ (25.4 mm) to 35” (900 mm) in diameter and up to 9 m in length.
We'll make the endpiece you need, with all the features required for your installation.
Lightweight sleeves
Expanding bars are also known as :
- Expanding mandrel / Inflatable mandrel
- Expanding spindle / Inflatable spindle
- Expanding shaft / Inflatable shaft
- Expanding saber / Inflatable saber
Expanding heads
Expandable spindles allow you to work in a cantilevered position. Just like expandable bars, you can find them with bar or key expansion, available in rubber, aluminum or steel.
Is your spindle installed on a machine with special inflation? Don't worry, we know how to fit in place of any installation.
+ Cantilever work
+ Single-block steel bar
+ Rigidity - Adaptability
+ Fixed spindle
Standard sleeves
Guttin MBC sleeves enable you to cope with occasional diameter changes. For example, quickly go from a 3' to a 6' diameter by fitting your bar with a pair of sleeves.
+ Quick to use
+ Change up to the desired diameter
+ Easy changeover from 74 mm to 150 mm diameter
+ Pneumatic or mechanical sleeve
Shell bars
Shell bars have two specific uses. 1. For thin cores, shells prevent deformation. 2. Clamp locking eliminates the need for a mandrel (cardboard or PVC).
+ Preserves thin cores
+ No deformation, protecting thin products
+ Can be used without a mandrel
Paper bars
Specially designed for the paper industry, this bar meets extreme operating conditions. Capable of withstanding loads and speeds specific to paper machines: (1750m/min - 15 tons).
+ Locking and centering bars
+ Static tube balancing
+ Conical bearing housing
+ 1750 m/ min - up to 15 tons
Friction bars
Friction bars have been designed for multi-track winding. Friction rings allow you to wind each coil with equal tension. When the tension is too high, the friction rings rub, allowing you to regulate the tension exerted on each coil individually.
+ Multi-track operation
+ Equal tension on each coil
+ Friction ring
Keyed bars
Preferred solution for high-load and/or high-tension coils. The wedges exert a multi-point force on the mandrel. Each wedge hugs and locks the mandrel, preventing slippage during tensioning.
Appreciated for its rigidity, load-bearing capacity and high strength, the wedge bar is available in three materials: aluminum, steel or carbon.
This makes it possible to combine strength and lightness!
+ Reinforced chuck support
+ High tension
+ Easy maintenance
+ Carbon, aluminum, reinforced aluminum and steel construction
+ MBC patent
Strip bars
Preferred solution for all web lengths. Ideally position your reel in line with your machine. Whether for multi-track or single-width unwinding, bars hold your reel perfectly in place. This format is available in aluminum or steel with various options.
+ Simplified insertion
+ Lightweight
+ Fast maintenance
+ Any diameter
Axial thrust mechanical heads
Axial thrust mechanical heads
(under content creation)
Mechanical torque heads
Mechanical torque heads
(under content creation)