Dynamic Fluid Components Hydraulic Motors, Pumps & Valves

Dynamic Fluid Components, Inc. (DFC), founded in 1997 and based in West Union, South Carolina, designs and builds interchangeable low-speed high-torque hydraulic motors, pressure-balanced fixed-displacement gear pumps, pressure gauges, hydraulic valves, flow dividers, and reservoir accessories for industrial hydraulic systems. The company is active and independently owned, and its ROTORTORC and ROLORTORC motor families are engineered as drop-in equivalents to major brands. Northern Hydraulics supplies Dynamic Fluid Components hydraulic motors, gear pumps, pressure gauges, valves, and accessories, and cross-references DFC part numbers against Char-Lynn (Eaton), Danfoss, Parker, and White equivalents.

Dynamic Fluid Components, Inc. Product Lines & Series

DFC splits its low-speed high-torque hydraulic motors between two designs: ROTORTORC, suited to moderate-pressure or intermittent high-pressure duty, and ROLORTORC, which runs on roller bearings for continuous high-pressure operation. All motors are built to ISO 9000-2000 standards. The core motor families are:

• BMPH Series (Rotortorc) — interchangeable with the Char-Lynn 101- series.
• BMRS Series (Rolortorc) — interchangeable with the Char-Lynn 103- series.
• BMSY Series (Rolortorc) — interchangeable with the Char-Lynn 104- and 105- series.
• BMT Series (Rolortorc) — interchangeable with the Char-Lynn 4000 Series.
• BMV Series (Rolortorc) — interchangeable with the Danfoss OMV.
• BMK6 Series (Rolortorc) — interchangeable with the Char-Lynn 6000 Series.
• BMM / BMMZ Series (Rotortorc) — interchangeable with the Char-Lynn 129- series and Danfoss OMM.
• BMER-2 Series (Rolortorc) — interchangeable with the White 500/530 Series; this replaced the older BMER-1 with larger radial bearings.
• BMH Series (Rolortorc) — low-speed high-torque motor design.

On the pump side, DFC builds pressure-balanced, fixed-displacement gear pumps across three frame sizes: the GP-F10 series (8 displacements, 0.07-0.48 in³/rev), the GP-F20 series (11 displacements, 0.24-1.95 in³/rev), and the GP-F25 series (10 displacements, 1.34-5.43 in³/rev). These base frames stack into double and triple pump configurations, and the wider hydraulic pumps range adds two-stage and PTO options. Pressure gauges span a 15 PSI to 10,000 PSI range, alongside hydraulic valves — ball, flow control, needle, check, solenoid, and selector types — plus flow dividers and test points.

Cross-Referencing Dynamic Fluid Components, Inc. Parts

The whole point of the DFC motor line is interchange: each series is engineered to match the mounting, shaft, and displacement of an established competitor, so a DFC motor drops into an existing circuit. If you are sourcing a replacement for a Char-Lynn (Eaton), Danfoss, Parker, or White motor, the DFC equivalent is often the faster route. Common starting points: BMPH for Char-Lynn 101-, BMRS for 103-, BMSY for 104-/105-, BMT for the 4000 Series, BMK6 for the 6000 Series, BMM for the 129- and Danfoss OMM, BMV for the Danfoss OMV, and BMER-2 for White 500/530. If your motor is a discontinued BMER-1 or another phased-out series, we can identify the current DFC hydraulic motor equivalent. Send us the part number, displacement, and mounting details, and our team will return the matching DFC or competitor cross-reference. Request a cross-reference quote.