Starrag Bumotec s191V

Est. $550,000 - $900,000 Specs verified 2026-10-03 · starrag.com Updated 2026-10-03

Image: d33jv2lquzij6s.cloudfront.net, Starrag

Key Specifications

X Travel

400 mm (15.7 in)

Y Travel

200 mm (7.9 in)

Z Travel

410 mm (16.1 in)

Tool Capacity

30, 60, or 90 positions

Rapid Traverse

50 m/min (1,969 ipm)

simultaneous axes

5-axis simultaneous (up to 7 axes, 3 spindles)

How much does the Starrag Bumotec s191V cost?

Estimated price range

Est.$550,000 - $900,000

Our best estimate for a 5-axis machining center in this class — not a quote from Starrag. Configuration moves it a long way.

Overview

The Starrag Bumotec s191V is a turn-mill center for bar work with 5-axis simultaneous machining, travels of 400 mm (15.7 in) in X, 200 mm (7.9 in) in Y and 410 mm (16.1 in) in Z, and a bar capacity of 50 mm (1.97 in). Starrag lists the platform with up to 7 axes and 3 spindles.

The machining spindle is the part of the specification with the most choices. The standard version runs to 30,000 RPM with 8 kW on an HSK-A40 interface clamped at 8 kN. A 40,000 RPM spindle is optional, and the Plus version raises power to 13 kW. For ceramic machining Starrag lists a separate high-frequency spindle option at 150,000 RPM. HSK-A40 is a small taper, so the machine is sized for small and medium cutters whichever spindle is chosen.

Turning is done by a 15 kW spindle with 41-68 Nm of torque. That is more power than either version of the machining spindle but modest torque, which suits 50 mm (1.97 in) bar and not heavy roughing. The B axis is listed with a range of -25° to -115°, and its torque depends on the version: 106/226 Nm standard and 166/339 Nm on the Plus. The table gives two values in each pair without saying what separates them, so ask Starrag which one is the continuous figure.

The tool magazine comes with 30, 60 or 90 positions, thermal stabilization is standard and the control is a Fanuc 31i. Rapid traverse is 50 m/min (1,969 ipm). Compared with the Bumotec s181, which lists 490 mm (19.3 in) of X and 160 mm (6.3 in) of Y at 40 m/min (1,575 ipm), the s191V is shorter in X, deeper in Y and faster between cuts.

Full Specifications

Parameter	Value
X-Axis Travel	400 mm (15.7 in)
Y-Axis Travel	200 mm (7.9 in)
Z-Axis Travel	410 mm (16.1 in)
Simultaneous Axes	5-axis simultaneous (up to 7 axes, 3 spindles)
Rapid Traverse Rate	50 m/min (1,969 ipm)
Machining Spindle Speed	30,000 RPM (40,000 RPM optional)
Machining Spindle Power	8 kW standard / 13 kW Plus
Machining Spindle Taper	HSK-A40
Machining Spindle Clamping Force	8 kN
Hf Spindle Option	150,000 RPM (ceramic machining)
Turning Spindle Power	15 kW
Turning Spindle Torque	41-68 Nm
Bar Capacity	50 mm (1.97 in)
B Axis Range	-25° to -115°
B Axis Torque	106/226 Nm std / 166/339 Nm Plus
Tool Capacity	30, 60, or 90 positions
Thermal Stabilization	Standard
CNC Control	Fanuc 31i
Axis Force Y	degree

Specifications sourced from starrag.com — verified 2026-10-03

Strengths & Limitations

Strengths

30,000 RPM machining spindle as standard, with 40,000 RPM optional and a 150,000 RPM high-frequency option for ceramic machining
The Plus version raises machining spindle power from 8 kW to 13 kW and B-axis torque from 106/226 Nm to 166/339 Nm
15 kW turning spindle with 41-68 Nm for 50 mm (1.97 in) bar
Tool magazine available with 30, 60 or 90 positions
Thermal stabilization is standard, and rapids are 50 m/min (1,969 ipm)

Limitations

Bar capacity is 50 mm (1.97 in); larger stock is outside the machine's range
HSK-A40 with 8 kN of clamping force limits cutter size and the cutting loads the machining spindle can take
The 40,000 RPM spindle, the 13 kW Plus spindle and the 150,000 RPM high-frequency spindle are options or version upgrades, not base equipment
Y travel is 200 mm (7.9 in), half of the 400 mm (15.7 in) X travel, which limits off-centre milling on wider parts

Best For

Complete machining of complex parts from bar up to 50 mm (1.97 in) Small-tool milling at 30,000 RPM, or 40,000 RPM with the optional spindle Ceramic components, using the 150,000 RPM high-frequency spindle option Tool-intensive parts, with a magazine of up to 90 positions

Frequently Asked Questions

01 What is the bar capacity of the Bumotec s191V?

50 mm (1.97 in). The turning spindle behind it is rated 15 kW with 41-68 Nm of torque, and the working travels are 400 mm (15.7 in) in X, 200 mm (7.9 in) in Y and 410 mm (16.1 in) in Z.

02 What spindle speeds are available on the Bumotec s191V?

The machining spindle runs to 30,000 RPM as standard, and a 40,000 RPM spindle is optional. Starrag also lists a high-frequency spindle option at 150,000 RPM for ceramic machining. Milling tools mount on HSK-A40, clamped with 8 kN.

03 What does the Plus version of the Bumotec s191V change?

Two rows in Starrag's table distinguish it. Machining spindle power is 8 kW on the standard machine and 13 kW on the Plus, and B-axis torque is 106/226 Nm on the standard machine and 166/339 Nm on the Plus. The turning spindle is listed at 15 kW without a version split.

04 How many tools can the Bumotec s191V carry?

The magazine is offered with 30, 60 or 90 positions. Which size is fitted is a configuration choice, so confirm it on the quotation, particularly if the part needs duplicate tools for unattended running.

05 How does the Bumotec s191V differ from the Bumotec s181?

The Bumotec s181 is listed with 490 mm (19.3 in) of X, 160 mm (6.3 in) of Y and 430 mm (16.9 in) of Z at 40 m/min (1,575 ipm), and weighs 5,000 kg (11,023 lb). The s191V has 400 mm (15.7 in), 200 mm (7.9 in) and 410 mm (16.1 in) at 50 m/min (1,969 ipm), and adds a 50 mm (1.97 in) bar capacity.