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Step Down Adapters are ideal for making the shaft smaller. Clamping coupling portion will not mar the shaft. Adapters eliminate the need for complete shaft replacement.
Step Down Clamp-on Adaptor SDA-Series
Step Down Clamp-on Adapter
Unit of Measure
1 

Item #

Bore

Shaft Size

Overall OD

Overall Length

Shaft Length

Bore Depth

Screw Size

Material

Weight

SDA-075 N/A 3/4 in N/A 1/2 in N/A 1 3/4 in N/A 3 1/2 in N/A 1 1/4 in N/A 1 5/8 in N/A 1/4-28 x 5/8 N/A Steel, ASTM A108 N/A 20.80 oz
SDA-087 N/A 7/8 in N/A 5/8 in N/A 1 7/8 in N/A 3 5/8 in N/A 1 1/4 in N/A 1 7/8 in N/A 1/4-28 x 5/8 N/A Steel, ASTM A108 N/A 24.50 oz
SDA-100 N/A 1 in N/A 3/4 in N/A 2 in N/A 3 5/8 in N/A 1 1/4 in N/A 2 in N/A 1/4-28 x 5/8 N/A Steel, ASTM A108 N/A 27.20 oz
SDA-112 N/A 1 1/8 in N/A 7/8 in N/A 2 1/8 in N/A 3 7/8 in N/A 1 1/2 in N/A 2 in N/A 1/4-28 x 3/4 N/A Steel, ASTM A108 N/A 31.20 oz
SDA-125 N/A 1 1/4 in N/A 1 in N/A 2 1/4 in N/A 4 1/2 in N/A 2 in N/A 2 in N/A 1/4-28 x 3/4 N/A Steel, ASTM A108 N/A 38.70 oz
SDA-137 N/A 1 3/8 in N/A 1 1/8 in N/A 2 3/8 in N/A 5 in N/A 2 in N/A 2 1/4 in N/A 1/4-28 x 3/4 N/A Steel, ASTM A108 N/A 51.70 oz
SDA-150 N/A 1 1/2 in N/A 1 1/4 in N/A 2 1/2 in N/A 5 3/8 in N/A 2 3/8 in N/A 2 1/4 in N/A 1/4-28 x 3/4 N/A Steel, ASTM A108 N/A 59.20 oz
Unit of Measure
1