Knuckle joint press Barnaul K8336 — 400 ton
Barnaul K8336 knuckle joint press - description
Technical specifications Barnaul K8336 (ID:76310)
| Type | Knuckle joint press |
| Manufacturer | Barnaul |
| Model | K8336 |
| Nominal force | 400 ton |
| Ram stroke | 130 mm |
| Number of continuous strokes per minute | 50 |
| Stroke of ram to its utmost lower position | 1,6 mm |
| Distance between bolster plate and ram in its lower position at upper position of adjustment | 375 mm |
| Adjustable distance between bolster plate and ram | 12 mm |
| Bolster plate dimensions | |
| From left to right | 500 mm |
| From front to back | 500 mm |
| Ram dimensions from front to back | 400 mm |
| Ejector stroke | |
| Upper | 16 mm |
| Lower | 80 mm |
| Ejector force | |
| Upper | 40 kN |
| Lower | 120 kN |
| Main drive power | 12 kW |
| Press dimensions | |
| From left to right | 1940 mm |
| From front to back | 1240 mm |
| Height above floor level | 2800 mm |
| Weight | 8425 kg |
Knuckle joint press Barnaul - technological processes and operations
| Coining | Under enormous pressure, the die is pressed into the workpiece, forcing the metal to distribute into the smallest recesses of the tool. As a result, clear reliefs, inscriptions, or patterns are formed on the surface with high accuracy. The metal fills all details of the die, fully reproducing its geometry. Used in the production of coins, medals, and precision parts where relief clarity and dimensional accuracy are essential. |
| Calibrating | A finishing operation that brings the forging to precise dimensions. The workpiece is placed in a calibration die, where under pressure its surface is leveled and the geometry is brought to the specified tolerances. This process eliminates minor shape distortions left after previous operations. As a result, the part receives stable dimensions and a smooth surface without additional machining. |
| Sheet stamping | — |
| Punching | Punching holes in sheet metal is performed in a die: a tool with sharp edges passes through the workpiece, separating material along a closed contour. The process is fast and precise, leaving no burrs when properly set up. Used for producing holes, slots, and cutouts in sheet metal parts. |
| Blanking | Blanking a part from a sheet along a closed contour is performed on a press using a blanking die. The tool passes through the material, separating the finished part from the sheet. The accuracy of the contour and the cleanliness of the edge determine the quality of the final product. |