Machinery's Handbook, 31st Edition
Shrinkage Fits
645
Table 2. Factors for Calculating Shrinkage Fit Allowances for Hollow Steel Shafts and Steel Hubs
D D
D D
D D
D D
D D
D D
0 1
0 1
0 1
1 2
1 2
1 2
C a
C a
C a
2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5
0.455 0.357 0.313 0.288 0.509 0.400 0.350 0.322 0.599 0.471 0.412 0.379 0.667 0.524 0.459 0.422 0.718 0.565 0.494 0.455
2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5
0.760 0.597 0.523 0.481 0.793 0.624 0.546 0.502 0.820 0.645 0.564 0.519 0.842 0.662 0.580 0.533 0.860 0.676 0.591 0.544
2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5
0.876 0.689 0.602 0.555 0.888 0.698 0.611 0.562 0.900 0.707 0.619 0.570 0.909 0.715 0.625 0.576
1.5
2.4
3.4
1.6
2.6
3.6
1.8
2.8
3.8
2.0
3.0
4.0
… … … … … …
2.2
3.2
…
… … a Values of factor C for hollow steel shafts of external and internal diameters D 1 and D 0 , respectively, and steel hubs of nominal external diameter D 2 . Table 3. Factors for Calculating Shrinkage Fit Allowances for Hollow Steel Shafts and Cast-Iron Hubs
D D
D D
D D
D D
D D
D D
1 2
1 2
1 2
0 1
0 1
0 1
C a
C a
C a
2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5
0.468 0.368 0.322 0.296 0.527 0.414 0.362 0.333 0.621 0.488 0.427 0.393 0.696 0.547 0.479 0.441 0.753 0.592 0.518 0.477
2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5
0.798 0.628 0.549 0.506 0.834 0.656 0.574 0.528 0.864 0.679 0.594 0.547 0.888 0.698 0.611 0.562 0.909 0.715 0.625 0.576
2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5 2.0 2.5 3.0 3.5
0.926 0.728 0.637 0.587 0.941 0.740 0.647 0.596 0.953 0.749 0.656 0.603 0.964 0.758 0.663 0.610
1.5
2.4
3.4
1.6
2.6
3.6
1.8
2.8
3.8
2.0
3.0
4.0
… … … … … … … …
2.2
3.2
…
a Values of factor C for hollow steel shafts and cast-iron hubs. Notation as in Table 2.
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