Rexroth Hydraulic Logic Element Valve

Description

This is a Rexroth LC 40 B40D7X/ logic element, a type of 2-way cartridge valve. It is designed for installation in hydraulic blocks and functions as a pilot-operated seat valve. This particular model is configured for pressure functions with a cracking pressure of 40 bar. Manufactured in Germany, it represents the high quality and reliability expected from Bosch Rexroth products.

Specifications

• Manufacturer: Rexroth
• Type: LC 40 B40D7X/
• Material Number: R900938008
• Product Type: Hydraulic Cartridge Valve (Logic Element)
• Nominal Size: NG40
• Function: Pressure cut-off
• Cracking Pressure: 40 bar
• Seals: NBR (Nitrile Rubber)
• Series: 7X

Label Info

• MAT: R900938008
• TYP: LC 40 B40D7X/
• Date: 13.07.2016

Application

These valves are commonly used in industrial hydraulic systems for controlling pressure, flow, and direction. They are integral components in hydraulic presses, injection molding machines, and heavy mobile equipment where reliable and precise control is essential.

Country of Origin

Made in Germany.

CO2 Impact

Reusing this component saves approximately 5.0 kg of CO2, contributing to a more sustainable industrial operation by avoiding the emissions associated with manufacturing a new part.

Availability

This item is in stock and ready for immediate dispatch. It is a new-old-stock (NOS) item from 2016 in excellent condition. Order now from PLC2Day for expert support and fast delivery.

FAQ

What is the significance of the 'B40D7X' designation in the type number?

The 'B' indicates the poppet type, '40' sets the cracking pressure at 40 bar, 'D' specifies NBR seals, and '7X' denotes the component series, which is important for compatibility and service parts.

The 'D' designation indicates NBR (Nitrile rubber) seals, which are compatible with mineral oils (HL, HLP) according to DIN 51524. For other fluids like phosphate esters (HFD-R), FKM (Viton) seals would be required. Always consult the datasheet for fluid compatibility.

This valve is designed for installation in a cavity conforming to ISO 7368. For nominal size 40 (NG40), the specific dimensions for the cavity, including port locations and tolerances, must be strictly followed to ensure proper function and sealing.

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Last Update: Friday, March 13, 2026