A2VK55MAGR1G1PE1-SO2 | A2VK28MAOR1G1PE2-SO2 | A2VK12MARL4G0PE1-SO2

The Rexroth A2VK series axial piston variable metering pumps are high-performance hydraulic metering products specifically designed for precision appliions including polyurethane foaming, chemical metering, and high-pressure fluid transfer. Featuring swashplate variable displacement design with high metering accuracy, wide flow adjustment range, and high working pressure, these pumps are widely used in injection molding machinery, chemical equipment, construction machinery, and other industrial fields.

Answer: Pump rotation direction (right-hand R or left-hand L) should match the drive motor rotation. When viewed from the drive end, clockwise motor rotation requires right-hand pump, counterclockwise requires left-hand pump. Incorrect selection may cause pump failure or damage. Confirm motor rotation direction during selection.

Answer: Before first start, fill the pump casing with clean hydraulic oil to the middle of oil level gauge, manually rotate the pump shaft several times to ensure oil filling. Run without load for 5-10 minutes, check for abnormal noise or leakage. If air is present, loosen vent screw or open fill port to release air. After first run, recommend changing hydraulic oil once to remove initial wear particles.

Answer: First check if handwheel adjustment mechanism is stuck, try rotating handwheel back and forth several times. If still not adjustable, possible causes include: internal mechanism blockage, control piston wear, spring failure, etc. Contact technical personnel for inspection. Keep adjustment mechanism clean and lubrie regularly.

Answer: Common causes: ① Air leakage or blockage in suction line causing cavitation; ② Low oil level or high viscosity; ③ Misalignment between pump and motor; ④ Internal component wear (port plate, pistons, etc.). Check external factors first (oil level, lines, coupling), if problem persists, inspect internal wear.

Answer: Excessive leakage may be caused by: ① Shaft seal wear or damage (replace seal); ② Wear between port plate and cylinder block (grind or replace); ③ Excessive clearance between piston and cylinder bore (replace piston assembly). Regularly check leakage, if significantly increased, stop and inspect to prevent pump damage due to oil shortage.

For ordering or detailed technical documents, please contact local Rexroth authorized distributor or Rexroth sales representative. Provide complete model number, quantity, delivery requirements, and we will provide professional technical support and quotation.