Decision Tools

Tool Holder Balance Calculator

Free engineering calculator - no signup, runs in your browser.

DEW Machine Shop Tools

Inputs

Balance Quality Grade (ISO 1940) Assembly Mass (kg) Max Operating Speed (rpm) Measured Unbalance (g·mm)

From your balancing machine; leave 0 to skip the pass/fail check

Readout

PERMISSIBLE UNBALANCE

— g·mm

MAX SAFE SPEED

— rpm

SPECIFIC UNBALANCE eₛₖₕ

— µm

—

Per ISO 1940-1. Unbalance limits tighten with rpm — balance to the highest speed the holder will actually run.