Home / Knowledge / BIG DAISHOWA New Hi-Power Milling Chuck vs Sandvik Coromant CoroMill 390
BIG DAISHOWA New Hi-Power Milling Chuck vs Sandvik Coromant CoroMill 390
BIG DAISHOWA New Hi-Power Milling Chuck and Sandvik Coromant CoroMill 390 are documented milling systems with different product architecture and application priorities. New Hi-Power Milling Chuck is BIG DAISHOWA's heavy-duty milling-chuck family. CoroMill 390 is a broad Sandvik Coromant indexable milling system for square-shoulder, profile, ramping, and related operations.
Side-by-side comparison
| Category | BIG DAISHOWA New Hi-Power Milling Chuck | Sandvik Coromant CoroMill 390 |
|---|---|---|
| System architecture | The official family page distinguishes standard, slim S, and small-diameter J types; these configurations have different envelopes and coolant behavior. | Official records distinguish cutter bodies such as size 07 and insert platforms such as 1704. |
| Documented application focus | Heavy-duty end milling where tool pullout resistance, radial support, and chatter control matter. | Square-shoulder and edging operations using the correct cutter and insert size. |
| Technical selection detail | The J type is positioned for 1/2 in or 12 mm cutters with peripheral jet coolant, while the broader family includes larger inch and metric clamping diameters. | Insert codes retain geometry and grade, including ML, PM, and other application-specific chipbreakers. |
| Primary documented constraint | Standard, S, and J holders are not interchangeable descriptions; interface, bore, projection, outside envelope, nut, collet, and coolant path must be explicit. | CoroMill 390 spans multiple cutter and insert sizes that are not cross-compatible. |
| Manufacturer-guided selection | Record the full holder catalog number, spindle interface, cutter shank, projection, holder type, reduction collet, coolant method, and maximum operating speed. | Capture body and insert ordering codes separately, including size, geometry, grade, corner radius, pitch, connection, and hand. |
Best fit by application
BIG DAISHOWA New Hi-Power Milling Chuck
- Heavy-duty end milling where tool pullout resistance, radial support, and chatter control matter.
- Record the full holder catalog number, spindle interface, cutter shank, projection, holder type, reduction collet, coolant method, and maximum operating speed.
Sandvik Coromant CoroMill 390
- Square-shoulder and edging operations using the correct cutter and insert size.
- Capture body and insert ordering codes separately, including size, geometry, grade, corner radius, pitch, connection, and hand.
Selection notes
Use New Hi-Power Milling Chuck when its documented application focus and technical configuration match the operation more closely; use CoroMill 390 when its documented architecture and constraints provide the better fit.
Compare complete configured assemblies and current manufacturer data rather than treating either family name as one universal item.
Variables to validate
- New Hi-Power Milling Chuck: Standard, S, and J holders are not interchangeable descriptions; interface, bore, projection, outside envelope, nut, collet, and coolant path must be explicit.
- CoroMill 390: CoroMill 390 spans multiple cutter and insert sizes that are not cross-compatible.
- Normalize diameter or cutter size, reach, interface, work material, machine conditions, coolant, and acceptance criteria before comparing performance or cost.
Official product references
- New Hi-Power Milling Chuck: BIG DAISHOWA New Hi-Power Milling Chuck product directory
- New Hi-Power Milling Chuck: BIG DAISHOWA Product Guide Vol. 3
- New Hi-Power Milling Chuck: BIG DAISHOWA document library
- CoroMill 390: Sandvik CoroMill 390 cutter R390-010A10-07L
- CoroMill 390: Sandvik CoroMill 390 insert R390-170408E-ML 1040
- CoroMill 390: Sandvik 2025 milling tools catalog
We work to keep this information reliable, but specifications and availability can change. Verify critical details with the manufacturer through the official resources above.