MARINE TRANSMISSION SHAFT COUPLERS

Description Marine Transmission Shaft Couplers by Buck Algonquin. Available in solid and split style body. Most are in stock. Split couplers are cast from ductile iron and precision machine to SAEJ specifications. All couplers must be fit and faced to the propeller shaft. FLANGE DIAMETER SHAFT RANGE NUMBER OF BOLTS BOLT SIZE BOLT CIRCLE PILOT OVERALL LENGTH SOLID SPLIT ALLISON 5-3/4″ 1-1/2″-2″ 6 1/2″ 4-3/4″ 3″ X 1/4″ F 4-1/2″ 50MC573 5-3/4″ 1-1/4″-2-1/4″ 6 1/2″ 4-3/4″ 3″ X 1/4″ F 5-3/32″ 505751 7-1/4″ 1-1/4″ – 1-3/4″ 6 5/8″ 6″ 3-3/4″ X 1/4″ F 4-3/8″ 50725A 7-1/4″ 2-2-1/2″ 6 5/8″ 6″ 3-3/4″ X 1/4″ F 5-1/2″ 50725B ATOMIC FOUR 3.410″ 7/8″ – 1-1/8″ 3 3/8″ 2.3/4″ 1-7/8″ X 1/4″ F 2.437 50MC3500 BORG WARNER 4″ 3/4″ X 1-1/2″ 4 3/8″ 3-1/4″ 2-1/2″ X 3/32″ M 2-1/4″ 50MC004 4″ 3/4″ X 1-1/2″ 4 3/8″ 3-1/4″ 2-1/2″ X 3/32″ M 2″ 50401S 4″ 7/8″” X 1-1/2″ 4 3/8″ 3-1/4″ 2-1/2″ X 3/32″ M 3-7/16″ 50400B 5″ 1″-2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 5-5/8″ 50MC005 5″ 1″ – 1-1/2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 3-7/16″ 50500A 5″ 1-1/2″ X 2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 4″ 50500C 5″ 1″- 1-1/2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 2-1/2″ 50500S 5-3/4″ 1-1/2″ – 2″ 6 1/2″ 4-3/4″ 3″ X 1/4″ F 4-1/2″ 50MC573 5-3/4″ 1-1/4″ – 2-1/4″ 6 1/2″ 4-3/4″ 3″ X 1/4″ F 5-3/32″ 505751 5-3/4″ 2-1/2″ 6 1/2″ 4-3/4″ 3″ X 1/4″ F 5-3/32″ 505751 CAPITOL 4-3/4″ 1″ – 1-1/2″ 6 7/16″ 3-7/8″ 2-1/2″ X 3/16″ F 3-1/2″ 50475A 4-3/4″ 1-1/2″ – 2″ 6 7/16″ 3-7/8″ 2-1/2″ X 3/16″ F 4″ 50475B 4-3/4″ 1-1/4″ – 1-1/2″ 6 7/16″ 3-7/8″ 2-1/2″ X 3/16″ F 3-5/8″ 50MC4725 5-3/4″ 1-1/2″ – 2″ 6 1/2″ 4-3/4″ 3″ X 1/4″ F 4-1/2″ 50MC573 5-3/4″ 1-1/2″ – 2″ 6 1/2″ 4-3/4″ 3″ X 1/4″ F 5-3/32″ 505751 7-1/4″ 1-1/4″ – 1-3/4″ 6 5/8″ 6″ 3-3/4″ X 1/4″ F 4-3/8″ 50725A 7-1/4″ 2″ – 2-1/2″ 6 5/8″ 6″ 3-3/4″ X 1/4″ F 5-1/2″ 50725B HURTH 4″ 3/4″ X 1-1/2″ 4 3/8″ 3-1/4″ 2-1/2″ X 3/32″ M 2-1/4″ 50MC004 4″ 3/4″ X 1-1/2″ 4 3/8″ 3-1/4″ 2-1/2″ X 3/32″ M 2″ 50401S 4″ 7/8″” X 1-1/2″ 4 3/8″ 3-1/4″ 2-1/2″ X 3/32″ M 3-7/16″ 50400B 5″ 1″-2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 5-5/8″ 50MC005 5″ 1″ – 1-1/2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 3-7/16″ 50500A 5″ 1-1/2″ X 2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 4″ 50500C 5″ 1″- 1-1/2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 2-1/2″ 50500S NEWAGE 4″ 3/4″ X 1-1/2″ 4 3/8″ 3-1/4″ 2-1/2″ X 3/32″ M 2-1/4″ 50MC004 4″ 3/4″ X 1-1/2″ 4 3/8″ 3-1/4″ 2-1/2″ X 3/32″ M 2″ 50401S 4″ 7/8″” X 1-1/2″ 4 3/8″ 3-1/4″ 2-1/2″ X 3/32″ M 3-7/16″ 50400B 5″ 1″-2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 5-5/8″ 50MC005 5″ 1″ – 1-1/2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 3-7/16″ 50500A 5″ 1-1/2″ X 2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 4″ 50500C 5″ 1″- 1-1/2″ 4 7/16″ 4-1/4″ 2-1/2″ x 3/32″ M 2-1/2″ 50500S 5-3/4″ 1-1/2″ – 2″ 6 1/2″ 4-3/4″ 3″ X 1/4″ F 4-1/2″ 50MC573 5-3/4″ 1-1/4″ – 2-1/4″ 6 1/2″ 4-3/4″ 3″ X 1/4″ F 5-3/32″ 505751 5-3/4″ 2-1/2″ 6 1/2″ 4-3/4″ 3″ X 1/4″ F 5-3/32″ 505751 7-1/4″ 1-1/4″ – 1-3/4″ 6 5/8″ 6″ 3-3/4″ X 1/4″ F 4-3/8″ 50725A 7-1/4″ 2″ – 2-1/2″ 6 5/8″ 6″ 3-3/4″ X 1/4″ F 5-1/2″ 50725B PARAGON 4″ 1″ – 1-1/2″ 4 3/8″ 3-1/4″ 2″ X 3/32″ M 3-7/16″ 50400A 4″ 7/8″ – 1-1/4″ 4 3/8″ 3-1/4″ 2″ X 3/32″ M 2″ 50400S 4″ 3/4″ – 1-3/8″ 4 3/8″ 3-1/4″ 2″ X 3/32″ M 2-1/4″ 50MC4020 4″ 1″ – 1-1/2″ 4 3/8″ 3-1/4″ 2-5/8″ X 3-32″ M 3-7/16″ 50400C 4″ 1″ – 1-1/4″ 4 3/8″ 3-1/4″ 2-5/8″ X 3-32″ M 2″ 50402S 4″ 3/4″ – 1-3/8″ 4 3/8″ 3-1/4″ 2-5/8″ X 3-32″ M 2-1/4″ 50MC4026 4-1/2″ 1″ – 1-3/4″ 4 3/8″ 3-3/4″ 2-5/8″ X 3/32″ M 2-5/8″ 50MC4526 5″ 1″ – 1-1/2″ 4 3/8″ 4-1/8″ 2-3/4″ X 3-32″ M 3-7/16″ 50500B 5″ 1″ – 1-1/2″ 4 3/8″ 4-1/8″ 2-3/4″ X 3-32″ M 2-1/2″ 50501S TWIN DISC 4-3/4″ 1″ – 1-1/2″ 6 7/16″ 3-7/8″ 2-1/2″ X 3/16″ F 3-1/2″ 50475A 4-1/4″ 1-1/2″ – 2″ 6 7/16″ 3-7/8″ 2-1/2″ X 3/16″ F 4″ 50475B 4-3/4″ 1-1/4″ – 1-1/2″ 6 7/16″ 3-7/8″ 2-1/2″ X 3/16″ F 3-5/8″ 50MC4725 5″ 1″ – 1-1/2″ 8 3/8″ 4-1/8″ 2-1/2″ X 3/32″ M 3-7/16″ 50501A 5-3/4″ 1-1/4″ – 2-1/4″ 6 5/8″ 4-3/4″ 3″ X 1/4″ F 5-3/32″ 505752 5-3/4″ 1-1/4″ – 2″ 6 5/8″ 4-3/4″ 3″ X 1/4″ F 4-1/2″ 50MC574 7-1/4″ 1-1/4″ – 1-3/4″ 6 3/4″ 6″ 3-3/4″ X 1/4″ F 4-3/8″ 50726A 7-1/4″ 2″ – 2-1/2″ 6 3/4″ 6″ 3-3/4″ X 1/4″ F 5-1/2″ 50726B VOLVO PENTA 3.945″ 3/4″ – 1-1/4″ 4 10mm 3.142″ 2.366″ x 3/32″ F 2-17/32″ 50MVP400 YANMAR 4″ 3/4″ – 1-1/4″ 4 10mm 3.070″ 1.966″ X 5-32″ M 2″ 50400YS 4″ 3/4″ – 1-3/8″ 4 10mm 3.070″ 1.966″ X 5-32″ M 2-1/4″ 50MCY004 4-3/4″ 1″ – 1-1/2″ 4 10mm 3.937″ 2.556″ X 1/8″ M 3-7/16″ 50500YS 4-3/4″ 1″ – 1-3/4″ 4 10mm 3.937″ 2.556″ X 1/8″ M 2-3/8″ 50MCY005 ZF 4-3/4″ 1″ – 1-1/2″ 6 12mm 3-7/8″ 2-1/2″ X 3/16″ F 3-1/2″ 50476A 4-3/4″ 1-1/2″ – 2″ 6 12mm 3-7/8″ 2-1/2″ X 3/16″ F 4″ 50476B 4-3/4″ 1-1/4″ – 1-1/2″ 6 12mm 3-7/8″ 2-1/2″ X 3/16″ F 3-5/8″ 50MC4726 5-3/4″ 1-1/2″ – 2″ 6 16mm 4-3/4″ 3″ x  1/4″ F 4-1/2″ 50MC574 5-3/4″ 1-1/4″ – 2-1/4″ 6 5/8″ 4-3/4″ 3″ x  1/4″ F 4-3/16″ 505752