Haas Automation 5-Axis Machining Centers

Haas UMC-1250SS

$250,000 - $335,000 Updated 2026-03-16

Key Specifications

X Travel

1,270 mm (50 in)

Y Travel

762 mm (30 in)

Z Travel

635 mm (25 in)

Max Spindle

15,000 RPM

Spindle Taper

CT40 / BT40

Tool Capacity

40+1 SMTC

Overview

The Haas UMC-1250SS is the super-speed variant of the UMC-1250 platform, combining full 5-axis simultaneous capability with a 15,000 RPM inline direct-drive spindle. With 1,270 x 762 x 635 mm (50 x 30 x 25 in) of XYZ travel and a dual-axis trunnion table, it handles complex 5-axis work at speeds that the 50-taper variant cannot match.

The SS designation means Super Speed. The 40-taper inline direct-drive spindle delivers 15,000 RPM with 122 Nm (90 ft-lbf) of torque from 22.4 kW (30 hp). This is a fundamentally different spindle philosophy than the UMC-1250/50 — it trades torque for speed, making it optimized for aluminum, non-ferrous alloys, and high-speed finishing of steel parts where surface speed and feed rate matter more than raw torque.

The trunnion table features a 1,016 mm (40 in) diameter platter with a 907 kg (2,000 lb) maximum load capacity. The A-axis tilts from +110 to -35 degrees, and the C-axis provides full 360-degree continuous rotation. Direct-drive rotary motors on both axes deliver smooth, precise 5-axis contouring — critical for aerospace surface finish requirements.

The 40+1 SMTC handles 40-taper tools up to 5.4 kg (12 lb), with tool-to-tool times around 2.4 seconds — significantly faster than the 50-taper variant because 40-taper tools are lighter. Machine weight is approximately 10,886 kg (24,000 lb).

Base price starts around $250,000. The UMC-1250SS is Haas's answer for shops doing 5-axis aluminum aerospace work, complex medical components, and any application where high spindle speed and fast tool changes matter more than brute torque. Compared to European and Japanese 5-axis machines with similar capability, the price advantage is significant. Specs sourced from Haas Automation published data.

Full Specifications

Parameter	Value
X-Axis Travel	1,270 mm (50 in)
Y-Axis Travel	762 mm (30 in)
Z-Axis Travel	635 mm (25 in)
Spindle Nose To Table Max	838 mm (33 in)
Spindle Nose To Table Min	203 mm (8 in)
Max Spindle Speed	15,000 RPM
Spindle Taper	CT40 / BT40
Spindle Motor Power	22.4 kW (30 hp)
Spindle Torque Max	122 Nm (90 ft-lbf)
Spindle Drive	Inline Direct Drive
Spindle Cooling	Liquid Cooled
Tool Capacity	40+1 SMTC
Tool To Tool	2.4 sec (avg)
Chip To Chip	4.8 sec (avg)
Max Tool Diameter	89 mm (3.5 in) full, 127 mm (5 in) adjacent empty
Max Tool Weight	5.4 kg (12 lb)
Table Type	Dual-axis trunnion
Table Diameter	1,016 mm (40 in)
Table Load Max	907 kg (2,000 lb)
A Axis Range	+110° / -35°
C Axis Range	360° continuous
Max Cutting Feedrate	16.5 m/min (650 ipm)
Rapid Traverse X	30.5 m/min (1,200 ipm)
Rapid Traverse Y	30.5 m/min (1,200 ipm)
Rapid Traverse Z	30.5 m/min (1,200 ipm)
Machine Weight	10,886 kg (24,000 lb)
CNC Control	Haas Next Generation Control (NGC)
Coolant Capacity	416 L (110 gal)
Air Required	113 L/min @ 6.9 bar (4 scfm @ 100 psi)
Electrical Low	220 VAC 3-phase, 70 A
Electrical High	440 VAC 3-phase, 35 A

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

Strengths & Limitations

Strengths

15,000 RPM inline direct-drive spindle excels at high-speed aluminum and non-ferrous 5-axis contouring
30.5 m/min (1,200 ipm) rapids are nearly double the 50-taper variant — dramatically faster positioning
2.4 sec tool-to-tool and 4.8 sec chip-to-chip are significantly faster than the UMC-1250/50
40+1 SMTC provides ample tool capacity for complex 5-axis programs requiring many cutters
1,016 mm (40 in) trunnion table handles large 5-axis workpieces up to 907 kg (2,000 lb)
Substantially lower cost than European and Japanese 15,000 RPM 5-axis machines with similar work envelopes

Limitations

122 Nm (90 ft-lbf) torque is roughly one-quarter of the UMC-1250/50 — not ideal for heavy steel roughing
40-taper limits cutter size and clamping force compared to 50-taper for large face mills
5.4 kg (12 lb) max tool weight is restrictive for heavy toolholders with long extensions
907 kg (2,000 lb) trunnion capacity constrains part weight, especially at tilted angles
15,000 RPM is fast for Haas but slower than competing 5-axis machines offering 20,000-42,000 RPM
10,886 kg (24,000 lb) still requires reinforced floor and significant rigging

Best For

Aerospace shops machining aluminum structural components with complex 5-axis geometry Medical device manufacturers producing titanium and stainless implants and instruments Shops doing high-speed 5-axis finishing on hardened steel mold and die components Production 5-axis work where fast rapids, tool changes, and high spindle speed reduce cycle times Shops entering 5-axis machining on aluminum and non-ferrous materials at an accessible price point Prototype and short-run shops needing versatile 5-axis capability across multiple materials

Frequently Asked Questions

01 What does a new Haas UMC-1250SS cost?

Base price starts around $250,000. With through-spindle coolant, probing, and production options, expect $300,000-$335,000. This is significantly less than competing European and Japanese 5-axis machines with 15,000 RPM spindles and similar work envelopes.

02 What is the difference between the UMC-1250SS and UMC-1250/50?

The SS has a 40-taper 15,000 RPM direct-drive spindle optimized for speed. The /50 has a 50-taper 6,000 RPM gearbox spindle optimized for torque (460 vs 122 Nm). The SS has 1,200 ipm rapids vs 710 ipm. Choose the SS for aluminum and high-speed work; choose the /50 for heavy steel and cast iron.

03 Can the UMC-1250SS handle steel machining?

Yes, but with limitations. The 122 Nm of torque is adequate for moderate steel cutting and finishing operations. For heavy steel roughing with large cutters, the UMC-1250/50 with its 460 Nm of torque is the better choice. Many shops use the SS for steel finishing and semi-finishing successfully.

04 What CAM software works best with the UMC-1250SS?

Any CAM system with mature 5-axis and Haas post processor support works well. Mastercam, Fusion 360, NX, hyperMILL, and GibbsCAM all have proven Haas 5-axis posts. For high-speed 5-axis contouring, CAM packages that support smooth toolpath generation (like hyperMILL or NX) can take full advantage of the 15,000 RPM spindle.

05 How does the UMC-1250SS compare to the UMC-750SS?

The UMC-1250SS has a significantly larger work envelope — 50 x 30 x 25 inches vs the UMC-750SS's 30 x 20 x 20 inches. The 1250SS trunnion table is 40 inches vs 25 inches. Both share the 15,000 RPM 40-taper spindle concept. Choose the 1250SS when your 5-axis parts exceed the 750SS's capacity.