Lovejoy Couplings & Hydraulic Components | Northern Hydraulics

Lovejoy, Inc. is a power transmission and coupling manufacturer founded in 1900 and headquartered in Downers Grove, Illinois. The company pioneered the industry-standard jaw-style coupling and builds flexible shaft couplings, universal joints, and hydraulic components including pump/motor mounts, reservoirs, and water-oil coolers. Lovejoy was acquired by the Timken Company in 2016 and remains active under that ownership. Northern Hydraulics supplies and cross-references Lovejoy jaw couplings and hydraulic components, with roughly 17 Lovejoy line items in our catalog.

Lovejoy Product Lines & Series

Lovejoy’s jaw couplings span the L-Line standard sizing from L035 through L276, with C-Line and H-Line variants for higher-torque and bored-to-size requirements. The LH-Line (Short Length Jaw Option) covers LH100 through LH900 across nine sizes for tighter axial envelopes. Curved Jaw CJ-Type couplings use a fail-safe design that keeps the drive turning after spider failure, and are offered in five hub materials and four spider materials. Spider elastomers come in 80A, 92A, 95/98A, and 64D shore compounds to match torque and damping needs.

For hydraulic drives, Lovejoy builds Nyflex, Mite, and Dentex nylon-sleeve couplings that need no lubrication and tolerate misalignment up to 5 degrees (Dentex, Nyflex) or 3 degrees (Mite) across a -40 degrees F to +150 degrees F operating range. The line also covers S-Flex Endurance, QUICK FLEX elastomeric, HercuFlex gear, torsional, and SU/SX/SXC disc couplings, plus universal joints. On the fluid-power side, our Lovejoy hydraulic accessories include pump/motor mount bellhousings, aluminum reservoirs in six sizes, and BNZ Series water-oil coolers rated up to 400 hp of heat removal. Lovejoy jaw couplings are the standard pump-to-engine connection on gas and diesel log splitters, and we stock the matching jaw and spider sets among our log splitter parts and accessories.

Cross-Referencing Lovejoy Parts

If you have a coupling marked with an old Lovejoy size code, a competitor jaw size, or a hub-and-spider stamp you can no longer source, we can match it to a current equivalent. The LH-Line short-length couplings interchange with industry-standard short-length designs, and the L-Line jaw sizing is the de facto reference most other coupling lines cross to, so the right replacement is usually a matter of confirming bore, keyway, and spider durometer. We also cross hydraulic bellhousings, reservoirs, and BNZ coolers by horsepower and frame size when the original part number is discontinued.

Send the casting numbers, bore and keyway dimensions, or the model off the elastomer and we will return the closest Lovejoy or equivalent part. Request a Lovejoy cross-reference quote and we will identify the replacement for an obsolete or hard-to-find part.