* 4.1 Impact wrench. Rated voltage. 21.6 V. * Weight in accordance with EPTA procedure 01/2003. 1.5 kg. Rated speed under no load. images.thdstatic.com Operations Manual - SID 4-A22
How it works (per diagram): Motor power flows into the sun gear → spins planetary gears → drives the cam → compresses spring → hammer strikes anvil. The diagram shows the hammer in the "reset" position ready for another impact. hilti+sid+4+a22+parts+diagram
The SID 4-A22 consists of several primary assemblies as identified in technical documentation: Component Name Function / Description 1 Chuck (1/4" Hex) Quick-release hexagonal socket for bits. 2 Work-Area Light LED ring surrounding the chuck for visibility. 3 Selector Switch hilti+sid+4+a22+parts+diagram