Calculator

Gear puller OD calculator

Enter part outside diameter in inches. Get 3, 4, 6, or 8 in max-spread class or NO_MATCH.

Result

Enter values to begin.

Worked check: 2.5 in → 3; 3.5 in → 4; 5 in → 6; 7 in → 8; 8 in → NO_MATCH.

Guides

Spread ladder and safety notes.