Cast Iron Sheave

Bored-To-Size Sheaves
Type 1 Type 2 Type 3
1/2 None
5/8 - 7/8 3/16 x 3/32
15/16 - 1 1/4 1/4 x 1/8
1 5/16 - 1 3/8 5/16 x 5/32
1 7/16 - 1 3/4 3/8 x 3/16
2AK Sheaves are accurately machined from gray cast iron, statically balanced, painted and
individually packaged. They are furnished with standard keyway & set screw. All set screws
are 5/16-18 knurled. Recommended tightening torque is 110-130 inch-lbs.
2AK
2AK20 2.00 1.46 1.80 1 s 1 3/8 1 21/32 15/32 3/16 1/2, 5/8, 3/4, 7/8 1.6 .83
2AK21 2.15 1.56 1.90 1 s 1 3/8 1 21/32 15/32 3/16 1/2, 5/8, 3/4 1.6 .97
2AK22 2.25 1.66 2.00 1 s 1 3/8 1 21/32 15/32 3/16 1/2, 5/8, 3/4, 7/8 1.6 1.0
2AK23 2.35 1.76 2.10 1 s 1 3/8 1 21/32 15/32 3/16 5/8, 3/4, 7/8, 1 1.7 1.1
2AK25 2.55 1.96 2.30 1 s 1 3/8 1 21/32 15/32 3/16 5/8, 3/4, 7/8, 1 1.7 1.3
2AK26 2.65 2.06 2.40 1 s 1 3/8 1 21/32 15/32 3/16 5/8, 3/4, 7/8, 1 1.7 1.4
2AK27 2.75 2.16 2.50 1 s 1 3/8 1 21/32 15/32 3/16 5/8, 3/4, 7/8, 1 1.9 1.6
2AK28 2.85 2.26 2.60 1 s 1 3/8 1 21/32 15/32 3/16 5/8, 3/4, 7/8, 1 1.9 1.7
2AK30 3.05 2.46 2.80 1 s 1 3/8 1 21/32 15/32 3/16 1/2, 5/8, 3/4, 7/8, 1, 1 1/8 1.9 2.0
2AK32 3.25 2.66 3.00 1 s 1 3/8 1 21/32 15/32 3/16 1/2, 5/8, 3/4, 7/8, 1, 1 1/8 1.9 2.3
2AK34 3.45 2.86 3.20 1 s 1 3/8 1 21/32 15/32 3/16 1/2, 5/8, 3/4, 7/8, 1, 1 1/8 1.9 2.5
2AK39 3.75 3.16 3.50 2 s 1 3/8 1 11/32 15/32 1/2 1/2, 5/8, 3/4, 7/8, 1, 1 1/8 1.9 2.6
2AK41 3.95 3.36 3.70 2 s 1 3/8 1 11/32 15/32 1/2 5/8, 3/4, 7/8, 1, 1 1/8 1.9 2.8
2AK44 4.25 3.66 4.00 2 s 1 3/8 1 11/32 15/32 1/2 5/8, 3/4, 7/8, 1, 1 1/8 1.9 3.2
2AK46 4.45 3.86 4.20 2 s 1 3/8 1 11/32 15/32 1/2 7/8, 1.9 2.9
1, 1 1/8 1.6
2AK49 4.75 4.16 4.50 2 s 1 3/8 1 11/32 15/32 1/2 3/4, 7/8, 1.6 3.2
1, 1 1/8, 1.9
1 3/8 2.4
2AK51 4.95 4.36 4.70 2 s 1 3/8 1 11/32 15/32 1/2 3/4, 7/8, 1.6 3.4
1, 1 1/8, 1.9
1 3/8 2.4
2AK54 5.25 4.66 5.00 3 s 1 3/8 1 11/32 15/32 1/2 5/8, 3/4, 7/8, 1, 1.6 3.7
1 1/8, 1.9
1 3/8 2.4
2AK56 5.45 4.86 5.20 3 s 1 3/8 1 11/32 15/32 1/2 5/8, 3/4, 1, 1.6 3.9
1 1/8, 1.9
1 3/8 2.4
2AK59 5.75 5.16 5.50 3 s 1 3/8 1 11/32 15/32 1/2 1, 1 1/8, 1.9 4.4
1 3/8 2.4
2AK61 5.95 5.36 5.70 3 s 1 3/8 1 11/32 15/32 1/2 3/4, 7/8, 1.6 4.5
1, 1 1/8, 1.9
1 3/8 2.4
2AK64 6.25 5.66 6.00 3 s 1 3/8 1 19/32 11/32 1/8 3/4, 1, 1.7 5.2
1 1/8, 1 3/16, 2.0
1 3/8, 1 7/16 2.5
2AK74 7.25 6.66 7.00 3 lh 1 3/8 1 19/32 11/32 1/8 3/4, 1, 1.7 6.0

Bored-To-Size Sheaves
Type 1 Type 2 Type 3