CNC 4th Axis Rotary Indexing Head, 100mm 3-Jaw Chuck

CNC rotary axis 4th axis attachment adds controlled rotation for engraving and milling complex curves, flats, and indexed features on your CNC router. This dividing head uses a K11-100mm 3-jaw chuck and MT2 tailstock with a 65 mm (2.6") center height to hold work securely while the 6:1 gear reduction supports smoother motion, finer indexing, and more stable cutting.

• Delivers multi-angle machining for curved parts, facets, and indexed operations on CNC routers and milling setups


• Improves positioning accuracy with a 6:1 reduction ratio for steadier rotation and expanded indexing control


• Includes K11-100mm 3-jaw chuck with internal/external jaw sets for fast workholding changes


• Supports repeatable alignment with MT2 tailstock and 65 mm (2.6") center height for longer stock


• Resists wear with 6061 aluminum alloy body and anodized finish for shop-ready durability

Set up a reliable A-axis indexing head to expand what your CNC can produce—nameplates, cylinders, multi-sided parts, and detailed engravings that demand consistent rotation. The through-hole design and strong clamping help keep round stock centered, while the geared drive and Nema23 stepper motor support predictable movement for toolpaths that need tight control. Ideal for makers and small shops upgrading to rotary machining without rebuilding their workflow. Grab yours today and start cutting more angles with fewer resets.

• Chuck: K11-100mm 3-jaw chuck


• Center height: 65 mm (2.6")


• Tailstock taper: MT2


• Gear ratio: 6:1


• Through-hole diameter: 22 mm (0.9")


• Clamping range (internal jaws): 2–30 mm (0.08–1.18")


• Clamping range (external jaws): 30–80 mm (1.18–3.15")


• Motor: Nema23 2-phase stepper, 4-lead, 57×57×56 mm (2.2×2.2×2.2")


• Input power: DC 3.75 V, 2.5 A


• Body material: 6061 aluminum alloy, anodized surface


• Net weight: 8 kg (17.6 lb)