Great Products Build Great Businesses

Since 1944, we have been helping our customers minimize production interruptions and maximize efficiency with the same care and expertise as if it were our own business.

Producing high-quality products and services is challenging and we know how hard it can be to find someone else who wants your business to succeed as much as you do. With industry-respected brands, $8 million of ready-to-ship components and assemblies and 24/7 support, we have the products to keep your business moving forward.

View JHF Product Line

Find Your Sales Representative


The John Henry Foster Company is a full-line fluid power distributor with territories covering parts of Missouri, Illinois and Kentucky and is the Midwest leader in fluid power sales. We have sales representatives stationed throughout our territory who can visit your site and provide hands-on attention to better meet your fluids power needs.

Request Compressed Air Service

Downtime not an option? Our world-class compressed air service team will help you ensure optimal performance of your compressed air system. Submit your request for service, and we will contact you with a quote. For Emergencies, please call 314-427-0600!

    More Properties

        Air Compressors

        Our associates are empowered to perform at the highest level of quality so that we meet and exceed expectations.

        Learn More
        Value Added

        Our associates are empowered to perform at the highest level of quality so that we meet and exceed expectations.

        Learn More
        Hydraulic

        Our associates are empowered to perform at the highest level of quality so that we meet and exceed expectations.

        Learn More
        Tool & Hoist Repair

        Our associates are empowered to perform at the highest level of quality so that we meet and exceed expectations.

        Learn More
        Units Converter

        Our associates are empowered to perform at the highest level of quality so that we meet and exceed expectations.

        Learn More
        Get in Touch   Contact Us
        Calculate Driven Sprocket Speed

        Enter Drive Speed, Drive Sprocket Diameter and Driven Sprocket Diameter to calculate Driven Speed

        Get Started
        Calculate Gear Pump Estimated Displacement

        Enter Gear Outside Diameter, Gear Width and Gear Center Distance to calculate Gallons Per Minute (GPM) @ 1200 RPM.

        Get Started
        Calculate Angled Hydraulic Cylinder PUSH-PULL

        Enter the Cylinder Bore diameter, PSI, Rod Diameter and Angle to calculate PUSH/PULL for a hydraulic cylinder mounted at an angle

        Get Started
        Calculate Driven Sprocket Diameter

        Enter Drive Speed, Drive Sprocket Diameter and Driven Speed to calculate Driven Sprocket Diameter

        Get Started
        Calculate Hydraulic Cylinder PUSH/PULL

        Enter the Cylinder Bore diameter, PSI and Rod Diameter to calculate PUSH/PULL for a hydraulic cylinder

        Get Started
        Calculate V-Belt Length

        Enter Pulley Center Distance, Large Pulley Diameter and Other Pulley Diameter to calculate V-Belt Length

        Get Started
        Calculate Sprocket Drive Speed

        Enter Drive Sprocket Diameter, Driven Speed and Driven Sprocket Diameter to calculate Drive Speed

        Get Started
        Calculate Vehicle Speed

        Enter the Wheel Outside Diameter (not the rim size) and Axle RPM to calculate Vehicle Speed

        Get Started
        Calculate Reservoir Capacity – Cylindrical

        Enter the Reservoir Diameter and Length or Height to calculate Cylindrical Tank Capacity in cubic inches/gallons

        Get Started
        Calculate Hydraulic Motor Horsepower

        Enter the GPM and PSI (pressure) to calculate Horsepower

        Get Started
        Calculate Reservoir Capacity – Rectangle

        Enter the Reservoir Length, Width and Height to calculate Rectangular Tank Capacity in cubic inches/gallons

        Get Started
        Calculate Hydraulic Cylinder Speed

        Enter the Pump GPM, Cylinder Bore diameter, Stroke and Rod Diameter to calculate Cylinder Speed (Do not use fractions)

        Get Started
        Calculate Input/Exhaust Volumes For Rephasing Cylinders

        Calculate Input/Exhaust Volumes to match the exhaust volume from one cylinder to the input volume of the next cylinder in a series

        Get Started
        Get in Touch   Contact Us
        © 2024 John Henry Foster | Privacy Policy | Conflict Minerals Statement