4WP6J6X/N/5 AN

The 4WP6J6X/N/5 AN spool valve belongs to the WP Pneumatic Spool Valves series from Bosch Rexroth and directs hydraulic flow in automated circuits while being shifted by compressed air. With a nominal size of 6, the body fits compact D03 manifolds where space is limited. The mounting interface follows ISO 4401-03-02-0-05, so the valve bolts directly onto standardized subplates without extra adapters. When a subplate lacks a locating hole, the DIN 24340 Form A porting pattern maintains correct passage alignment. A G1/8 control port thread accepts common pneumatic fittings for the pilot supply, and pneumatic actuation simplifies electrical isolation because no coils or wiring are required. The pilot cavity holds 4.24 cm³, keeping response time low by limiting the air volume that must be pressurized. Installation position can be any orientation, which eases layout in densely packed hydraulic power units.

The unit tolerates a maximum operating pressure of 315 bar at ports a, b, and p, allowing it to manage high-pressure work circuits found in presses or injection molding machines. Tank port pressure may rise to 160 bar without damaging seals, so back-pressure-loaded returns are acceptable. The pilot air must stay between 4 bar and 10 bar; this range balances reliable shifting with economical air consumption. A maximum flow of 60 l/min lets designers pair the valve with medium-capacity pumps while keeping pressure drops low. Required fluid cleanliness of ISO 4406 20/18/15 limits particulate abrasion and keeps the spool lands free of scoring. Switching frequency reaches 7 200 cycles per hour, permitting rapid index motions in high-duty machinery without overheating the pneumatic pilot or hydraulic envelope.