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W900 Series Gear Pump, 0.49 cu in/rev, 2-Bolt SAE A Mounting Flange, 3/4 St.Keyed Shaft, SAE-12 Side Inlet, SAE-10 Side Outlet Ports, CW Rotation

Description & Features

The W900 Series gear pump from Concentric Rockford Inc offers a displacement of 0.49 cu in/rev, characterized by a robust 2-bolt SAE A mounting flange and a 3/4 st.keyed shaft. Ideally suited for direct axial drives, it features a SAE-12 side inlet and SAE-10 side outlet ports, with a clockwise rotation mechanism.

Constructed with high-strength aluminum housings and durable cast iron end covers, this model ensures reliable performance even under demanding conditions. Its through bore bushing type design, combined with 13-tooth gears and optimized trapping configuration, contributes to decreased noise levels and increased efficiency.

Capable of withstanding continuous operating temperatures up to 200deg;F, the gear pump delivers an impressive overall efficiency of 90%, volumetric efficiency of 98%, and mechanical efficiency of 92%. The W900 Series is designed to handle a pressure rating of 4000 PSI and a speed rating of up to 4000 RPM.

To maintain optimal performance, it is recommended to use ISO 4406 Cleanliness Level 18/14 or cleaner fluid filtration. For applications involving radial or thrust loads, additional assistance is recommended.

Supplier Part Number: 1303193

Specifications

Brand concentric	grp Rated Speed Minimum Speed is 500 rpm at Maximum Continuous Pressure	grp Recommended Filtration ISO 4406 Cleanliness Level 18/14 or Cleaner	Housing Material Aluminum/Iron	Inlet Type SAE	Mounting Type SAE A 2-Bolt Flange	Outlet Type SAE	Rotation CW	Shaft IO 3/4 in Straight Keyed

Product Questions & Answers (2)

Question by: Wes E on Jan 7, 2026, 11:48 AM

Will this work for a direct drive setup, or do I need extra support for radial loads?

Answer by: Customer Support on Jan 8, 2026, 4:31 PM

This W900 series gear pump is recommended for direct axial drives. If your application involves radial or thrust loads, it's best to get in touch for application assistance to make sure everything lines up right.

Question by: Rusty B on Aug 8, 2025, 10:10 AM

got a direct-coupled setup. is this pump meant to be driven straight off the shaft, or do i need to worry about side load on it?

Answer by: Customer Support on Aug 9, 2025, 5:41 PM

For direct axial drive, it’s a good fit since that’s the recommended application. Side loading is the thing to watch, because the notes call out that radial and thrust loads are a case where you want extra application support rather than treating it like a side-load tolerant pump.