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Jaw couplings

Looking for a reliable alternative to standard jaw couplings? Discover heavy-duty, one-piece flexible couplings designed to replace traditional Lovejoy, Ruland, TB Wood’s, and SKF models without requiring elastomeric spider inserts.

Compatible with coupling sizes L-070 through L-276 and available in both T6061-T6 Aluminum and 4140 Steel Alloy, these units handle shaft misalignment without rubber insert failures—saving on replacement parts and labor. Fits standard 3/4″ to 2 1/4″ keyway shafts and metric splines.

BOSTON GEAR FC-15-1/2 SHAFT COUPLING to Pinterest (opens in a new window)
Boston Gear FC20-1 to Pinterest (opens in a new window)
Boston Gear FC20-1/2 Jaw coupling hub to Pinterest (opens in a new window)
Boston Gear FC20-15/16 jaw coupling hub to Pinterest (opens in a new window)
Boston Gear FC20-3/4 Shaft Coupler hub to Pinterest (opens in a new window)
Boston Gear FC20-5/8 to Pinterest (opens in a new window)

Couplings, Collars & Universal Joiners

Boston Gear FC20-5/8

Boston Gear FC20-7/8 Jaw coupling hub to Pinterest (opens in a new window)
Boston Gear FC20-9/16 Jaw coupling hub to Pinterest (opens in a new window)
Boston Gear FC45 2in Steel FC Coupling to Pinterest (opens in a new window)
Boston Gear SSFC20-1 Jaw Coupling Hub 1/4 in x 1/8 in KW to Pinterest (opens in a new window)

Couplings, Collars & Universal Joiners

Boston Gear SSFC20-1 Jaw Coupling Hub 1/4 in x 1/8 in KW

Boston Gear XFCA12 Poly Insert to Pinterest (opens in a new window)
Boston Gear XFCA20 Polyurethane Spider Insert to Pinterest (opens in a new window)