R8 Shank Face End Mill Arbor Kit With 7/16-20UNF Thread, 400R-50-22-4T 50mm 4-Flute Cutter Bore 22mm, Includes 10 APMT1604 Carbide Inserts And T15 Wrench For CNC Milling All-In-One Pro Grade Kit

All-In-One R8 Arbor Kit: 50mm Cutter, 10 Carbide Inserts
✔️ R8 FMB22 Arbor 7/16-20UNF, 22mm bore; 50mm cutter

This pro-grade all-in-one shank face end mill arbor kit includes 1 x R8 FMB22 Arbor, 1 x 400R-50-22-4T cutter, 1 x T15 wrench, and 10 x APMT1604 carbide inserts. It’s designed for CNC milling on milling machines, using an R8 spindle with 7/16-20UNF drawbar threads and a 22 mm bore.

✅ R8 FMB22 Arbor: 7/16-20UNF (0.4375 in) / 11.11 mm bore 22 mm (0.87 in)
✅ 50 mm diameter, 4-flute face end mill cutter, bore 22 mm (0.87 in)
✅ 10 x APMT1604 carbide inserts: 85° nose, 11° relief
✅ Includes T15 wrench for quick tool changes
✅ Ideal for milling planes, grooves, and cutoffs on CNC mills

💡 What is an end mill arbor used for in CNC milling and why choose a specific bore and thread?

End mills rely on a rigid, correctly sized arbor for stable, precise cutting.

- Provides rigid coupling between spindle and cutter to minimize runout - Ensures compatibility with standard drawbar threads like 7/16-20 UNF - Supports precise bore alignment (22 mm) for consistent cutting - Enhances tooling life and surface finish in milling operations