ER11 Spindle Collet Diameter 8 mm

An ER collet, also known as a full-length collet, is a tapered piece that fits into the spindle. A uniform circumferential force is applied to the blade or workpiece to completely close the collet. A collet is the most accurate tool for holding small diameter workpieces on a lathe. The collet consists of a collet bushing, a drawbar, and a handwheel or handle for moving the drawbar. The spring-loaded collet and the collet are mounted together on the collet. The collet bushing is mounted on the right end of the lathe spindle. The drawbar passes through the machine spindle and is screwed into the collet spring. When the drawbar is rotated by the handwheel, it pulls the collet into the taper adapter and holds it firmly on the workpiece. Spring-loaded collet chucks come in various shapes to hold square and hexagonal workpieces as well as circular workpieces.
Basically, collet chucks are made of spring steel and depending on their type and model, each one is used for a specific size. The ER11 8mm spring collet with a diameter of 8 mm and a height of 40 mm is used for a 16 mm shaft.

Application of ER11 collet chuck:

1. lathes

Specifications of ER11 collet chuck:

1. model: er11a-8mm
2. material: steel
3. height: 40 mm
4. shank diameter: 16 mm
5. inner diameter of shank: 8mm (±0.02mm)
6. nut diameter: 19 mm
7. inner diameter of nut: 9 mm