C Channel Bending Machine

Roll bending C channel(also called U channel) profile with C channel bending machine(profile bending machine) is a metal forming process that involves passing C channel through a series of rollers to achieve a desired curve or bend without compromising the material’s structural integrity. For any form of C-shaped or U-shaped channel steel, there are only three ways to roll bending the channel profile, Y-Y axis flanches in, Y-Y axis flanches out, and X-X axis(hard way), as shown below:

PBC C Channel Bending Machine Rolls Settings for C Channel Bending

For C channel roll bending with Y-Y axis flanches in, Y-Y axis flanches out, for small quantities of workpieces, the universal profile bending rolls provided with the PBC profile bender can be used. If such roll bending is required for a long period of time, the machine must be equipped with bending rolls specially manufactured according to the commonly used C channel steel dimensions. Below is a diagram of the common roller settings for both bending methods, and a diagram of the special roller:

Hydraulic Pulling Apparatus for C Channel Bending

When is the Hydraulic Pulling Apparatus needed on a PBC C Channel Bending Machine?

When performing hard-way (X-X axis) roll bending of I-beams or U-shaped channels, the cross-section experiences highly uneven stress distribution. This is especially critical for profiles with thin webs and wide flanges, which are prone to web buckling, section twisting, or flange collapse under compressive force.

To tackle such challenging bending tasks, the PBC C Channel Bending Machine can be optionally equipped with a Hydraulic Pulling Apparatus. Its primary function is:

Working Principle: The hydraulic pulling device is installed on the outer flange of the I-beam or C channel. It applies precisely controlled and continuous tension via hydraulic cylinders. This tension, combined with the compressive force from the machine’s main three rolls, forms a balanced system of outer tension and inner compression, effectively maintaining the integrity of the profile during bending.

Basic Parameters of 3 Popular PBC C Channel Bending Machines

Item	PBC 300	PBC 360	PBC 450	PBC 500	PBC 550
Section Modulus (cm³)	75-240	180-320
Bending Speed (m/min)	4.5	4.5	4.5	4.5	4.5
Guide Rolls Moving Speed (m/min)	1.6	1.6	1.6	1.6	1.6
Upper Shaft Diameter (mm)	180	220
Lower Shaft Diameter (mm)	160	180
Bending Roller Diameter (mm)	460	520
Hydraulic Motor Power (kW)	11.0	15.0
Weight (kg)	3600	5000
Diameter (mm)	2500×2530×1700	3200×2600×1800

Capacity Table for Bent Profiles

Profile & Bending Method	PBC-300	PBC-360	PBC-450	PBC-500	PBC-550	Mold & Tool
	150×30 Φ1500	175×40 Φ2500				○
	250×40 Φ1000	350×40 Φ1500				○●
	80×80 Φ1500	110×110 Φ1600				○
	Φ100 Φ1000	Ø 125 Φ1200				●
	Φ170 Φ2000	Φ190 Φ2500				●
	120x120x8 Φ3000	150×150×8 Φ5000				○●
	H: max.60 W: max.120 Φ1500	H: max.80 W: max.160 Φ5000				○●
	H: max.120 W: max.60 Φ1500	H: max.160 W: max.120 Φ2500				○●
	130x130x15 Φ1200	160×160×20 Φ1800				○△
	150x150x16 Φ1000	160×160×20 Φ3000 mm				○△
	130x130x15 Φ1700	150x150x20 Φ2000				○△
	150x150x15 Φ1200	160x160x20 Φ1400				○△
	150x150x15 Φ1300	160x160x20 Φ1500				○△
	UPN 300×100 Φ1100	UPN 360 Φ1400				○●
	UPN 300×100 Φ1100	UPN 360 Φ1200				○●
	UPN 160×65 Φ9000	UPN 200×75 Φ11000				○●▲
	IPE 300 HEA 180 HEB 160 Ø 1100	IPE 360 HEA 240 HEB 200 Ø 1500				○●
	IPE 160 Φ3400 HEA 140 Φ6000	IPE 200 Φ5000 HEA 180 Φ4500				○●▲