{"id":1707,"date":"2026-10-20T10:42:42","date_gmt":"2026-10-20T10:42:42","guid":{"rendered":"https:\/\/kaivoy.com\/guides\/guides-mini-excavator-bucket-sizes\/"},"modified":"2026-10-20T11:59:08","modified_gmt":"2026-10-20T11:59:08","slug":"mini-excavator-bucket-sizes","status":"publish","type":"page","link":"https:\/\/kaivoy.com\/es\/guides\/mini-excavator-bucket-sizes\/","title":{"rendered":"Mini Excavator Bucket Sizes: Width, Capacity and Tonnage Matching"},"content":{"rendered":"

Bucket width is the number most buyers guess at – and the one most often regretted. Too narrow and the job takes twice as long; too wide and a mini excavator cannot fill the bucket or lift it once full. This guide explains how width, capacity and machine tonnage fit together, with the KaiVoy range as a worked example.<\/p>\n\n\n\n

The rule: bucket volume against machine class<\/h2>\n\n\n\n

Excavator manufacturers publish a maximum bucket capacity per machine. On mini machines the practical limit is usually not the lift capacity of the full bucket but whether the machine can breakout and curl a heaped bucket in hard ground. As a starting point for general excavation in average soil:<\/p>\n\n\n\n

Machine class<\/th>Typical digging bucket width<\/th>KaiVoy digging bucket<\/th><\/tr><\/thead>
1.0 – 1.8 t<\/td>400 – 450 mm<\/td>UT-430 (430 mm)<\/a>, UT-430 heavy duty<\/a><\/td><\/tr>
1.5 – 2.5 t<\/td>500 – 520 mm<\/td>UT-520 (520 mm)<\/a><\/td><\/tr>
3.5 t<\/td>600 – 620 mm<\/td>UT-620 (620 mm)<\/a><\/td><\/tr>
5 t<\/td>700 – 720 mm<\/td>UT-720 (720 mm)<\/a><\/td><\/tr>
8 t<\/td>800 mm and up<\/td>UT-800 (800 mm)<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Width vs production<\/h2>\n\n\n\n