Punch M1B (12 Ga.) Punch M1A (12 Ga.) Punch M1 (11 Ga.) Punch M3A (10 Ga.)

Die M2 ¼” (22 Ga.)  Die M2 3/8″ (18 Ga.)  Die M2 ½” (16 Ga.)

Punch M6A (20 Ga.)  Punch M6B (16 Ga.)  Punch M6C (12 Ga.)  Punch M9A (9 Ga.)

Punch M7A (16 Ga.    Punch M7B (12 Ga.)

Die M2 5/8″ (14 Ga.)  Die M2 ¾” (13 Ga.  Die M2 7/8″ (12 Ga.)

Die M2 1″ (11 Ga.)  Die M2 1-1/8″ (10 Ga.)

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Heavy Duty Right Angle Bends

Use air bending technique with these dies to reduce tonnage required on heavy gauge material. Note: Punch and die heights ± 1/8″

Punch M3B (¼” Capacity), Punch M3C (3/8″ Capacity), Punch M3D (½” Capacity)

Punch M9B (3/16″ Capacity), Punch M9C (5/16″ Capacity), Punch M7C (3/16″ Capacity)

Die M4 1-¼” (9 Ga.), Die M4 1-½” (3/16″ Capacity), Die M4 2″ (¼” Capacity)

Die M4 2-½” (5/16″ Capacity), Die M4 3″ (3/8″ Capacity), Die M4 4″ (½” Capacity)

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Acute Angle Bending Dies

Use these dies to produce preliminary bend for hemming operation or air bend angles less than 90°. Regulating the depth that the punch enters the die opening varies the degree of the obtained bend.

Note: Punch and die heights ± 1/8″

Punch M21 (16 Ga.)  Punch M21A (14 Ga.)  Punch M23B (12 Ga.) Punch M23C (10 Ga.)

Die M22 1″ (11 Ga.) Die M22 1-¼” (10 Ga.) Die M1 1-½” (3/16″ Capacity)

Die M20 ¼” (22 Ga.)  Die M20 3/8″ (18 Ga.)  Die M20 ½” (16 Ga.)

Die M22 5/8″ (14 Ga.)             Die M22 7/8″ (12 Ga.)

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Hemming Die for Light Gauge Materials

Use Dies No. M34 and M35 to produce hem in two hits in same die with one handling.

Note: Punch and die heights ± 1/8″

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Right Angle “Offset” Die Combinations

Use these dies to produce close tolerance offset bends with reduced labour and handling time.
Tonnage requirements shown on bending chart are not valid for offset dies.

Note: Punch and die heights ± 1/8″

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Flattening Die Combinations

Use these dies in pairs to produce hems or to close previously formed acute angle bends to the desired degree.

Note: Punch and die heights ± 1/8″

Group 1: M16A, M16B, M16C

Group 2: M18A, M18B

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Heavy Duty Punches, 4-Way Dies

Note: Punch and die heights ± 1/8″

Heavy Duty Punches

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4-Way Dies

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Punching Plates

Punching Plates, Riser Blocks

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Samples of Special Tools

Brake Press Set-up Aids

PressBrake Features

Common Types of Brake Punch Tongues – Others on Request

Box Forming

Brake Press Tonnage Chart

Tons Required Per Linear Foot to Bend Mild Steel Plate Having 60,000 PSI Tensile Strength

For other metals as compared to 60,000 PSI tensile strength mild steel adjust as follows:

Brake Press Bending Allowance Chart

Bend Allowances for 90° Bends in Low‑Carbon Steel and Aluminum (Al)

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Notes of Interest

Offset Dies

The relation between depth of offset and metal thickness affects the accuracy of the 90° bends. Good results in material up to 18 gauge can generally be obtained by bottoming, if the depth of the offset is six to eight times the metal thickness. The press brake tonnage requirements are approximately five times that needed for a single 90° air bend. When forming heavy gauge sheets, the depth of offset should be greater than eight times metal thickness.

Tonnage requirements can be reduced by air bending rather than bottoming (compromising on accuracy), and also by using larger radii on the forming points.

Radius Dies

When the radius exceeds four times material thickness, spring-back must be compensated for in the dies. The large radius used to prevent fracturing may also create problems such as material pre-bending, causing fluting and pulling away from the punch radius. Such pre-bending may require coining the radius at the bottom of the press stroke and adding to the tonnage. When forming exceptionally large radii, a bumping die will often prove more practical than a large deep die.

Fracturing

When bending mild steel plate 1/2″ thick and heavier or high strength materials, fracturing can be reduced by increasing die opening to 10 to 12 times material thickness. Increasing the punch radius also reduces fracturing. Tonnage Increase: When making 90^° bends the pressure to form the material rises rapidly to reach 85% of maximum when the material is bent up only 20^°, and a maximum when the material is bent up 40^°.

Channel Dies

The corner sharpness requirements and the flatness of the bottom of the channel have a direct bearing on the tonnage applied. Increasing corner radii reduces tonnage and helps in achieving a flatter bottom. Results depend on material which is uniform in thickness, temper, and yield point.

Press Brake Deflection

Mecon Deflection-Compensating Die Holder.

• Multi point calibrating adjustment.
• Crown read-out indicators.
• Patent#1234039

Thinking Safety

• Require that dies be set only by a qualified, safety-conscious die-setter.
• Insist that the die-setter be fully familiar with the press or machine’s manual.
• Provide all point-of-operation guards or devices necessary to avoid exposing any part of the operator’s body to the closing of the machine or press.
• Provide hand tools to insert, hold, and remove material, and to keep hands at a safe distance from the point of operation.
• Insist on safety practices and procedures and enforce them daily.
• Follow the instructions provided in the manual for the machine in which dies are being installed and operated.
• Ascertain that operators are trained in safety procedures, and arrange for periodic inspections to ensure that those procedures are being followed.
• Make available such safety-standard approved devices as pull-backs, fences, and infrared light curtain and controls for all press equipment. Two-button operation may also be necessary in some instances.