Filling Valve SF125B0-1-4X - Bosch Rexroth R900563516

In the downward rapid stroke a large press cylinder needs far more oil than the power unit can deliver, so it takes it from the reservoir. The size 125 SF prefill valve opens exactly that path with up to 3800 l/min, hydraulically actuated and rated to 350 bar.

Benefits

• Up to 3800 l/min fill the cylinder in rapid traverse without extra pump capacity.
• Seat valve design seals leak free against the reservoir during the pressing stroke.
• 350 bar permissible operating pressure allow use on presses with high closing force.
• Hydraulic actuation, so no electrical supply is needed at the valve.
• Tank installation with a threaded port to ISO 228-1, size 125.
• Version without pre-decompression for systems that have their own decompression circuit.

Applications

The valve is fitted in hydraulic presses, forging plants and scrap shears with large cylinder volumes. It sits on the reservoir and connects it to the cylinder chamber during rapid traverse, then closes against system pressure in the working stroke. At 61 kg a lifting aid is required for installation and replacement.

Manufacturer

Genuine Bosch Rexroth part, material number R900563516.