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GC Series Gear Pump, 0.26 cu in/rev, 4-bolt 1.78 in. pilot Mounting Flange, 0.50 in. dia. X 1.50 in. extension Shaft, SAE-8 Side Ports, Bi-Directional with check valves Rotation

Description & Features

The GC Series Gear Pump, 0.26 cu in/rev, 4-bolt 1.78 in. pilot Mounting Flange, 0.50 in. dia. X 1.50 in. extension Shaft, SAE-8 Side Ports, Bi-Directional with check valves Rotation by Concentric Rockford Inc delivers superior volumetric efficiency and high mechanical performance under harsh conditions.

Featuring a 4-bolt 1.78 in. pilot mount and SAE-8 side ports, this gear pump is designed for bi-directional rotation with check valves. It includes a Viton high-pressure seal and outboard ball bearing, ensuring long-lasting reliability.

Constructed with a robust cast iron body and hardened steel gears, the pump operates at a maximum pressure rating of 2300 PSI and a rated flow of 2 GPM. The shaft measures 0.50 in. diameter x 1.50 in. extension, with a speed rating of up to 4000 RPM.

Engineered for durability, the GC Series Gear Pump offers substantial value with needle bearing construction and can withstand maximum system temperatures of up to 250deg;F.

Manufacturer Part Number: 1300096

Supplier Part Number: JS BARNES-G1216C3A300N00

Specifications

Brand concentric	Dimensions 3.16 in L x 2.812 in W x 3.281 in H	Gear Material Steel	Gear Type External	grp Rated Speed 4000 rpm Maximum Shaft Speed, 750 rpm Minimum Shaft Speed	Housing Color Blue	Housing Material Iron	Inlet Size 3/4-16	Inlet Type SAE ORB	Mounting Type 4-Bolt Flange	Outlet Size 9/16-18	Outlet Type SAE ORB	Rotation Reversible	Seal Material FKM	Series GC Series	Shaft IO 1/2 in Dia x 1-1/5 in Extension

Similar Products

Model Number	Displacement	Rated Flow	Mount	Shaft	Ports	Rotation	Features	Speed Rating	Pressure Rating
1300086 GC Series Gear Pump	0.129	1	4-bolt 1.78 in. pilot	0.17 1in. Tang w/Short Coupling	SAE-6 Side	Bi-Directional with check valves	Single Lip Buna-N Pressure Seal	4000 RPM	3000
1300094 GC Series Gear Pump	0.129	1	4-bolt 1.78 in. pilot	0.50 in. dia. X 1.50 in. extension	SAE-6 Side	Bi-Directional with check valves	Viton High-Pressure Seal w/Outboard Ball Bearing	4000 RPM	3000
1300098 GC Series Gear Pump	0.388	3	4-bolt 1.78 in. pilot	0.50 in. dia. X 1.50 in. extension	SAE-10 Side	Bi-Directional with check valves	Viton High-Pressure Seal w/Outboard Ball Bearing	4000 RPM	1600

Product Questions & Answers (4)

Question by: Lynn B on May 3, 2025, 9:37 AM

Got an old pump that's shot, and I'm fixing to swap it out—does this GC series have the right shaft size for a half-inch drive?

Answer by: Customer Support on May 5, 2025, 6:11 AM

The shaft on this GC series pump measures 0.50 inches in diameter with a 1.50-inch extension, so it'll match up directly if your drive setup calls for that exact sizing.

Question by: Rusty A on Nov 26, 2025, 4:41 PM

Does this pump work both ways or just one direction?

Answer by: Customer Support on Nov 28, 2025, 8:51 AM

Bi-directional operation with check valves built right in. You can run it clockwise or counterclockwise depending on what your application needs, and the check valves help maintain proper flow direction and system pressure.

Question by: Steve B on Aug 31, 2025, 9:08 AM

Will this gear pump work if I need it to spin in either direction?

Answer by: Customer Support on Sep 2, 2025, 6:36 AM

Yes, this GC Series gear pump is bi-directional and includes check valves for either rotation.