A small slot at the end of a bend can prevent a surprisingly expensive manufacturing problem. Without enough space for the material to deform, the boundary between a bent flange and an adjacent flat region may tear, wrinkle, bulge, or pull a nearby hole out of shape. Adding a relief cut usually costs very little…
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Quick answer: For a conventional 90° air bend, the minimum flange length is often estimated as 0.70 × the V-die opening (V). A more conservative, widely published design check is 0.77 × V. These are screening rules, not machine-independent manufacturing limits. Use the actual die manufacturer’s chart, the exact flange-dimension convention, material requirements and a…
When comparing a CNC press brake vs NC press brake, the important question is not which machine has a more attractive touchscreen. It is whether the machine can produce your actual parts, at the required quality, safely and at a commercially sensible cost. Two machines can both have electronic controllers and programmable backgauges while using…
Press brake tooling is more than a set of interchangeable punches and dies. It is the physical connection between a machine’s available force and the geometry, accuracy, finish, and safety of a finished sheet metal part. A strong CNC press brake cannot compensate for a punch that collides with a return flange, a lower die…
An engineering-based, practical guide to air-bending force, V-die selection, material strength, working length, tooling limits and real KRRASS press brake configurations. Quick answer: For a preliminary press brake tonnage chart, start with the material thickness, actual bend-line length, V-die opening and ultimate tensile strength. Under KRRASS’s published metric air-bending convention, the estimated force is P…
Learn calculations and proven formulas to optimize your workflow with our comprehensive guide to bending allowance calculations.
Buying a press brake from China requires agreement on more than a machine model and a price. Define the parts the machine must produce, verify the companies involved in the transaction, compare the complete supply scope, and agree how performance will be accepted before shipment and after installation. Plan import responsibilities and service support before…
For buyers researching press brake China options, the right machine starts with the parts it must produce. Choose a bending architecture that suits your production mix, calculate the force for the actual material and tooling, and check that the workpiece fits throughout the bend sequence. Then specify the controller, backgauge, tooling, compensation and handling equipment…
Compare seven China press brake manufacturers using published product ranges, part-fit questions, trial-bending evidence and practical service checks.
A useful CNC hydraulic press brake price starts with a defined machine configuration and delivery scope. As of October 12, 2026, KRRASS publicly lists reference prices of USD 32,699 for the MB8-210T4000 with DA-53T control and USD 33,520 for the PBS-110T2500 with DA-66S control. These are two different CNC hydraulic configurations. They provide specific price…
A hydraulic vs electric press brake comparison starts with the parts your workshop needs to produce. Material strength, bend length, tooling, finished-part tolerances and annual workload determine whether a machine is suitable. Its drive system then influences motion, energy use and maintenance within that application. The selection process therefore asks two questions: can both machines…
A panel bender is one of the most effective ways to automate repetitive sheet metal bending when a factory produces cabinets, electrical enclosures, HVAC panels, appliance housings, elevator components, doors, trays or other parts with multiple flanges. Instead of asking an operator to lift, flip, reposition and gauge a sheet for every bend, an automatic…