Starrag Starrag NB Series

$1,500,000 - $3,000,000 Updated 2026-03-19

Key Specifications

Max Spindle

18,000 RPM

Spindle Taper

HSK-T100

spindle sensors

Displacement and temperature sensors

turning capability

Integrated (hub/bore)

surface finish capability

Ra < 0.6 um

number of axes

5 (with turning)

Overview

The Starrag NB Series is a family of dedicated 5-axis blisk (bladed disk) machining centers for integrally bladed rotors in aerospace turbine engines and industrial gas turbines. Blades and disk are machined from a single forging.

Features 18,000 RPM spindles through an HSK-T100 interface with displacement and temperature sensors for thermal compensation during 40-120 hour machining cycles. Integrated turning enables hub and bore machining without a separate lathe.

Achieves Ra < 0.6 um on blade airfoils. Proprietary blisk process software with Siemens SINUMERIK 840D sl provides adaptive feed control for blade channel machining.

Targets titanium blisks (compressor stages), nickel superalloy blisks (HP turbine stages), and blade steel blisks (industrial gas turbines). Each blisk represents $50K-200K in raw material. New machines: $1,500,000 to $3,000,000.

Full Specifications

Parameter	Value
Max Spindle Speed	18,000 RPM
Spindle Taper	HSK-T100
Spindle Sensors	Displacement and temperature sensors
Turning Capability	Integrated (hub/bore)
Surface Finish Capability	Ra < 0.6 um
Number Of Axes	5 (with turning)
Primary Materials	Titanium, nickel superalloys, blade steels
CNC Control	Siemens SINUMERIK 840D sl
Process Software	Starrag blisk process package

Specifications sourced from starrag.com — verified 2026-03-28

Strengths & Limitations

Strengths

Purpose-built blisk platform with zero-scrap-rate capability
18,000 RPM HSK-T100 balances finishing speed and roughing torque
Integrated turning for complete blisk machining in one setup
Ra < 0.6 um eliminates secondary polishing
Adaptive feed control manages extreme blade channel forces
Spindle thermal compensation for 40-120 hour cycles

Limitations

Major capital commitment at $1.5M-3M
Extremely specialized for blisk geometry
Extended cycle times (40-120 hours) need careful scheduling
HSK-T100 tooling less common than HSK-A63

Best For

Aerospace turbine engine OEMs producing blisks Tier 1 suppliers for long-term engine programs Industrial gas turbine manufacturers Aero-engine MRO for blisk weld-repair R&D organizations validating new blisk designs