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Hi-Q Coupling Half, 0.75 Inch Bore, 3/16 Inch Key

Description & Features

The Hi-Q Coupling Half by Maurey Manufacturing Co, with a bore size of 0.75 inches and a key of 3/16 inches, is renowned for its fast installation and precision engineering. This robust coupling, made from sintered metal, is ideal for connecting hydraulic pumps to electric motors and various other applications, accommodating minor angular and centerline misalignments. The coupling prevents metal-to-metal contact, ensuring durability and consistent performance. Its high horsepower rating, with Buna-N at 7.2 and Urethane at 11.9, makes it suitable for demanding industrial settings. Designed for optimal performance, it features a significant angular offset capability of 1deg; and a parallel offset of 0.015 inches. Additionally, the coupling is rust-resistant and capable of withstanding a wide temperature range, from -20deg;F to 180deg;F with a Buna-N Spider and -80deg;F to 180deg;F with a Urethane Spider. **MPN** L100-3/4 **Supplier Part Number** L100-3/4

Specifications

Coupling Size L100	For Use With Hi-Q® Flexible Couplings	Horsepower Rating Buna-N: 7.2 hp, Urethane: 11.9 hp	Material Steel	Sg Materials FC050-FC095 - Sintered Metal, FC099-FC225 - Machined Cast Iron	Sg Temperature Range -20 to 180 deg F Buna-N Spider, -80 to 180 deg F Urethane Spider

Product Questions & Answers (4)

Question by: Dwayne S on Jul 14, 2025, 7:50 AM

got a 3/4 inch bore hydraulic pump I'm trying to hook up to a motor, this the right coupling half for that?

Answer by: Customer Support on Jul 15, 2025, 4:45 PM

that bore size lines up exactly. The FC100-3/4 is built for 3/4 inch shafts with a 3/16 inch keyway, and coupling hydraulic pumps to electric motors is pretty much the textbook use case for this whole product line. Just make sure your mating coupling half matches up, and keep in mind it'll handle up to 1 degree of angular misalignment and 0.015 inches of parallel offset, so your alignment doesn't have to be perfect but it shouldn't be sloppy either.

Question by: Ross S on May 9, 2025, 7:11 AM

Will this coupling work for connecting a hydraulic pump to a motor?

Answer by: Customer Support on May 11, 2025, 6:50 AM

Designed for coupling hydraulic pumps to electric motors, this Hi-Q coupling half can definitely be used in a variety of other applications, too.

Question by: Darryl A on Aug 20, 2025, 12:06 PM

got a 3/4 inch shaft with a 3/16 keyway. is this coupling half the right fit for that?

Answer by: Customer Support on Aug 22, 2025, 11:08 AM

The bore on this coupling half is 0.75 inch and it uses a 3/16 inch key, so it matches a 3/4 inch shaft with a 3/16 keyway.

Question by: Daryl P on Apr 14, 2025, 2:59 PM

Does this coupling half work for hooking up a hydraulic pump to an electric motor, or is it more of a general-purpose thing?

Answer by: Customer Support on Apr 16, 2025, 1:55 PM

Connecting hydraulic pumps to electric motors is exactly what it's built for, though it handles plenty of other shaft-to-shaft applications just fine. The bore is 0.75 inches with a 3/16 inch key, so as long as your shaft matches up, you're in good shape. It also tolerates minor angular and parallel misalignments, up to 1 degree angular and 0.015 inches parallel, which takes some of the headache out of lining things up perfectly every time.