In the fields of metal forming, sheet metal fabrication, blanking, and punching, the press machine is an essential piece of equipment. It applies high pressure through a mold to shape or separate materials such as sheet, strip, or tube. In this article, we highlight one of the most common and important types — the open-type fixed table press, using Bolun’s signature model BLPG-500 as an example.

Features and Advantages of the BLPG Series Press
The BLPG-500 is a classic open-type fixed table press, designed with a four-column, symmetrical frame structure that ensures high rigidity and low deformation. It is suitable for various industrial applications.
Key advantages include:
Large working space, ideal for loading/unloading large or continuous strip materials;
Easy mold installation and adjustment;
High guiding accuracy, thanks to the long eight-surface slide guides for smooth and precise motion.
Main Components of the BLPG-500
C-frame body: The rigid structure supports all working loads.
Drive system:
Motor: Provides mechanical power;
Flywheel: Stores and buffers energy;
Clutch/Brake: Controls stroke timing and emergency stop; typically uses pneumatic friction type;
Crankshaft and linkage: Converts rotary motion into vertical slide movement.
Slide (Ram): Mounts the upper die and performs the press stroke; stroke parameters are adjustable.
Worktable: Mounts the lower die, features T-slots, and resists counterforce.
Operation control: Supports multiple modes (single stroke, continuous, inching).
Lubrication system: Ensures smooth operation and extends machine life.
Pneumatic system: Powers clutch, counterbalance, ejectors, etc.
Electrical control system: Intelligent control with safety interlocks for safe and efficient operation.
Typical Applications
The BLPG-500 is widely used in medium-sized stamping production, including:
Automotive parts (e.g., brackets, chassis components)
Home appliance enclosures (washing machines, A/C panels)
Metal furniture structures
Electrical motor cores and laminations
Kitchenware and hardware tools
Batch sheet metal fabrication in stamping centers
With its excellent rigidity, ample workspace, and user-friendly design, the BLPG series is a preferred choice in stamping workshops. Selecting the right model and operating it within the recommended parameters ensures optimal performance, quality, and safety.