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Drive Pulley Adapters

for Reinforced Nylon Round, Flat, and V Pulleys

Drive adapters convert all our nylon round, flat and vee idler pulleys into drive pulleys, i.e. no bearings. Hubs are made from sintered powdered steel. All come with keyway and set screw.

Not all pulley sizes with drive adapters are in stock. If the pulley you want is not in stock, then there may be a minimum order of 50 pulleys, but all do not need to be drive pulleys. For example, you could order two drive pulleys and 48 idler pulleys.

New larger sizes: 5/8", 3/4" and 1" (15.9mm, 19.1mm and 25.4mm) diameter -- allow use with much larger shafts.

Part No.	Shaft dia.	Stand-off	Keyway
DA38	0.375" (9.5 mm)	0.375" (9.5 mm)	0.125" (3.2 mm)
DA39	0.394" (10 mm)	0.375" (9.5 mm)	0.120" (3 mm)
DA50	0.50" (12.7 mm)	0.375" (9.5 mm)	0.125" (3.2 mm)
DA63	0.625" (15.9 mm)	0.50" or 0.75" (12.7 or 19 mm)	0.188" (4.8 mm)
DA75	0.75" (19.1 mm)	0.50" or 0.75" (12.7 or 19 mm)	0.188" (4.8 mm)
DA100	1.00" (25.4 mm)	0.50" or 0.75" (12.7 or 19 mm)	0.250" (6.3 mm)*

*DA100 requires a rectangular key 0.25" x 0.188"
(www.mcmastercarr.com sells them)

(includes Set Screw)