ER11 Extension Rod Holder Spindle Motor Chuck 5 MM

ER11A-8mm Motor Shaft Collet Tool Holder

This ER11A-8mm motor shaft collet is made from high-quality 45 steel for durability and precision. The straight shank and clamping nut provide a strong, secure hold, while the extended rod and precision-ground parts minimize imbalance for safer, smoother cutting. Designed for deep-hole processing, it is ideal for boring, milling, drilling, tapping, grinding, and other machining operations. The collet comes well-packed in a protective container with a label for safe storage and transport.

Specifications:

• Type: ER11A-8mm

• Material: 45 Steel

• Color: Black & Silver

• Height: 40 mm / 1.57″

• Shaft Diameter: 16 mm / 0.63″

• Shaft Inner Diameter: 8 mm ±0.02 mm / 0.31″

• Nut Outer Diameter: 19 mm / 0.75″

• Nut Inner Diameter: 9 mm / 0.354″

Package Includes:

• 1 × ER11A-8mm Motor Shaft Tool Holder