Plate Roll | HRB-4 Series

HRB-4 Series

Accurate, ease of operation, fastest roll bending. Flat zone of the the sheet edges is minimized. Pre-bending, conical bending and ellipse bending is made easy.
Double pre-bends (at both ends) in one pass
Hydraulic and electrical systems have been safeguarded from overloads, and require minimum maintenance. Hydraulic and electrical components are also modular and designed according to industry world standards.
The sheet is fully controlled by tightening of top and bottom rolls. Most suitable bending operation available for CNC applications. More efficient for cycle times, and user friendly operations without dependence on individual operator ability.

Standard Equipment

• Touch screen control unit with six multi-pass programmable digital readouts
• Dual speed control (fast/slow)
• Cone bending
• Induction hardened rolls (HRC 58)
• Highly durable forged 4140 alloy steel rolls machined by CNC Lathes with optimal crown (special crown upon request)
• Side rolls electronically positioned and synchronized with PLC and high-end precision digital scales
• Automatic rolls peripheral speed compensation (optimum distribution of torque)
• Machine body constructed of stress-relieved high-yield steel
• Rolls seated in spherical bearings
• Top roll hydraulic opening device (drop end) with easy pull out system
• Bottom and top rolls driven with hydraulic motor and planetary gear box
• Side rolls driven (hydraulic motor and planetary gear boxes) on machines with 17.72" top roll and above
• Rolls with an 17.72” or larger top roll come standard with rectilinear guides.
• Safety barrier
• Electrical and hydraulic protection against overloads
• World standard electrical and hydraulic components (parts stocked by JMT or available off-the-shelf from your local supplier)
• Adjustable hydraulic pressure on bottom roll (crowning compensation)
• Permanent lubrication

Optional Equipment

• NC Control Unit
• CNC Control Unit with color graphical control
• All axis positioning with adjustable speed on CNC machines
• Polished rolls
• Variable speed control
• Wired or wireless remote
• Oil Cooler
• Side support system (both sides)
• Preparation for vertical support system
• Vertical overhead support system (mechanical or hydraulic)
• NC inclusion for vertical support control
• NC inclusion for side support control
• Changeable top roll for smaller diameters
• Welding possibility on the machine
• Material feeding table
• Automation
• Special roll crowning
• Special applications for Wind-tower production

Videos coming soon.

Material Type
Grade
Material Thickness (inches) - T
Die Width (inches) - W
Punch Radius (inches)
Overall Length	FT (required)

K Factor
Die Ratio (W/T)
Bend Radius - Inside Estimated Air Bend Radius
Bend Radius - Outside Estimated Air Bend Radius
Minimum Between Bends Minimum Leg Length for Die Width
Tonnage Required (per foot of Bend)
Total Tonnage for Bend
TONS
Constants (Press Brake Tonnage):
Bend Length (inches)
Friction Coefficient
Calculated Value of Force
Bend Angle (degrees)

See Material Chart

MATERIAL STRENGTH
ASTM Number	Other Number	Grade	Yield Str.	Min. Tensile	Max. Tensile	Min. Rad.	Recom. Vee Die
CARBON STEEL
	1015		29000	50000	65000
	1020		32000	58000	73000
	1025		34000	70000	85000
A36			36000	58000	80000	1.5T	8T - 12T
A242	CORTEN	A	50000	70000	85000	3T	12T
A283			30000	55000	60000	1.5T	8T - 10T
A514	T-1	B,F,H,Q	100000	110000	130000	3T	16T
A570		30	30000	49000	64000	1T	8T
		33	33000	52000	67000	1T	10T
		36	36000	53000	68000	1.5T	nbsp;
		40	40000	55000	70000	2T	12T
		45	45000	60000	75000	2T
		50	50000	65000	80000	2.5T
		55	55000	70000	85000	3T
A572		42	42000	60000	75000	2T	10T - 12T
		50	50000	70000	85000	2.5T	12T
		60	60000	75000	90000	3.5T	14T
		65	65000	80000	95000	4T	14T - 16T
A588	CORTEN	B	50000	70000	85000	3T	10T - 12T
A606			50000	70000	85000	2.5T	8T - 12T
A607		45	45000	60000	75000	1.5T	8T - 10T
		50	50000	65000	80000	2T	10T - 12T
		55	55000	70000	85000	2T	12T
		60	60000	75000	90000	2.5T	12T - 14T
		65	65000	80000	95000	3T	14T
		70	70000	85000	100000	3.5T	16T
A611		A	25000	52000	67000	.5T
		B	30000	45000	60000	1T
		C	33000	48000	63000	1.5T
		D	40000	52000	67000	2T
		E	80000	82000	97000	NA
A656		50	50000	60000	75000	1.5T	8T - 10T
		60	60000	70000	85000		8T - 10T
nbsp;		70	70000	80000	95000		8T - 10T
		80	80000	95000	110000	1.5T	8T - 10T
A715	A606	50	50000	60000	75000	1T	10T
	A607	60	60000	70000	85000	1.5T	8T - 10T
	A607	70	70000	80000	95000	2T	10T
		80	80000	90000	105000	2T	10T - 12T
A907		30	30000	49000	64000
		33	33000	52000	67000
		36	36000	53000	68000
		40	40000	55000	70000
	AR360			177000	192000
	AR (235)		70000	115000	130000
	WELDEX	130	130000	147000	160000	4T
		160	160000	181000	225000	6T
ASTM Number	Other Number	Grade	Yield Str.	Min. Tensile	Max. Tensile	Min. Rad.	Recom. Vee Die
STAINLESS STEEL
A167	S30215	302B	30000	75000	90000
	S30800	308	30000	75000	90000
	S30900	309	30000	75000	90000
	S31000	310	30000	75000	90000
	S33228		27000	73000	88000
	S35315		39000	94000	109000
A176	S32803		72000	87000	102000
	S40300	403	30000	70000	85000	td>
	S42000	420		100000	115000
	S44200	442	40000	65000	80000		nbsp;
	S44600	446	40000	65000	80000
A666
A693		630	160000	185000	200000
		631	55000	150000	165000
		632	65000	150000	165000
		635	75000	120000	135000
A887
ASTM Number	Other Number	Grade	Yield Str.	Min. Tensile	Max. Tensile	Min. Rad.	Recom. Vee Die
ALUMINUM
B209	1100			14000	24000
	3003			17000	30000
	5005			18000	30000
	5052			31000	44000
	5083			40000	59000
	5086			40000	54000
	5454			36000	47000
	2024			30000	63000
	6061			20000	42000
B221	6063			13000	35000
	7075			33000	83000