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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

Displacement 0.26	Displacement 0.258	Brand Concentric Rockford Inc	Brand Concentric Rockford	Pack Size 1.00	UOM EA	Features Viton High-Pressure Seal w/Outboard Ball Bearing	Mount 4-bolt 1.78 in. pilot	Mount 4-bolt 1.78 in. pilot	Ports SAE-8 Side	Ports SAE-8 Side	Pressure Rating 2300	Rated Flow 2	Rated Flow 2	Rotation Bi-Directional with check valves	Shaft 0.50 in. dia. X 1.50 in. extension	Shaft 0.50 in. dia. X 1.50 in. extension	Speed Rating 4000 RPM	Speed Rating 4000 RPM	Supplier Part Number 1300096	Alternate Part Numbers Alternate Part Number C1LW74, Alternate Part Number G1216C3A300N00	Product Weight 4.70 lbs

Product Questions & Answers 4

Product Questions & Answers

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?

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

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

Does this pump work both ways or just one direction?

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

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.

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

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

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

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

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

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

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

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Model Number	Displacement	Rated Flow	Mount	Shaft	Ports	Rotation	Features	Speed Rating	Pressure Rating
1300086	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	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
1300096	0.258	2	4-bolt 1.78 in. pilot	0.50 in. dia. X 1.50 in. extension	SAE-8 Side	Bi-Directional with check valves	Viton High-Pressure Seal w/Outboard Ball Bearing	4000 RPM	2300
1300098	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