The 'C' Frame Power Press — also known as C-Type or OBI (Open Back Inclinable) Press — is among the most widely used mechanical presses in global sheet metal stamping. BASANT's C Frame presses feature an open, three-sided work area that makes them ideal for progressive die operations, compound tooling, blanking, piercing, and high-speed stamping where easy material feeding and part ejection are critical. Available from 5 Ton to 200 Ton.
Key Specifications at a Glance
The C-frame configuration provides unobstructed access from three sides — front, left, and right — enabling easy die installation, material feeding, and finished part ejection without complex automation.
Select models feature a frame that can be tilted up to 30° backward, allowing finished parts or blanks to slide out by gravity — eliminating the need for part ejectors or conveyors in many applications.
The single-piece cast or fabricated C-frame ensures precise and consistent parallelism between the slide and bolster, which is critical for progressive die accuracy and repeatable blanking quality.
Motorised or manual die height adjustment accommodates tooling of varying heights without the need for shim plates, reducing changeover time significantly during die swaps.
Anti-tie-down, two-hand control system ensures the operator's hands are clear of the die zone before the slide descends — compliant with industrial safety standards for press operations.
Optional VFD (Variable Frequency Drive) allows SPM to be tuned precisely to the material and die requirements, optimising output quality and stroke efficiency for every job.
Extended precision slide gibs with adjustable clearance maintain accurate slide-to-bolster parallelism across the full stroke length, essential for complex progressive die work.
Reliable pneumatic clutch-brake combination delivers accurate top-dead-centre stopping, quick engagement, and consistent performance across the full SPM range of the press.
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