Haas Automation 5-Axis Machining Centers

Haas UMC-1250SS-50

$300,000 - $385,000 Updated 2026-03-19

Key Specifications

X Travel

1,270 mm (50 in)

Y Travel

762 mm (30 in)

Z Travel

635 mm (25 in)

Max Spindle

12000 rpm

Spindle Taper

CT50 / BT50

Tool Capacity

40+1 SMTC

Overview

The Haas UMC-1250SS-50 combines the large-envelope UMC-1250 platform with a 50-taper super-speed spindle configuration, creating a 5-axis machine that bridges the gap between the high-speed 40-taper UMC-1250SS and the torque-focused UMC-1250/50. With 1,270 x 762 x 635 mm (50 x 30 x 25 in) of travel, it handles large 5-axis workpieces with the cutting authority of a 50-taper drivetrain and faster axis motion than the standard /50 model.

The spindle is a 50-taper unit delivering 22.4 kW (30 hp) with significantly higher torque than the 40-taper variants. The SS designation brings faster rapids and improved servo tuning compared to the standard UMC-1250/50, while the 50-taper provides the torque multiplication that heavy ferrous materials demand. This combination makes the UMC-1250SS-50 suitable for shops cutting steel, cast iron, and stainless steel at complex 5-axis angles where both torque and positioning speed matter.

The trunnion table features a 1,016 mm (40 in) diameter platter with 907 kg (2,000 lb) 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 deliver smooth contouring motion for simultaneous 5-axis machining.

The 40+1 SMTC handles 50-taper tools with generous capacity for complex multi-operation programs. Machine weight is approximately 12,247 kg (27,000 lb), providing substantial mass for vibration damping during heavy 5-axis cuts.

The UMC-1250SS-50 fills a niche for shops that need both the torque of a 50-taper spindle and the faster axis motion of the SS platform. European and Japanese 50-taper 5-axis machines with comparable capability typically cost two to three times as much. 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)
Max Spindle Speed	12000 rpm
Spindle Taper	CT50 / BT50
Spindle Motor Power	60.0 hp
Spindle Torque Max	460 Nm (340 ft-lbf) @ 700 RPM
Spindle Drive	2-Speed Gearbox
Spindle Cooling	Liquid Cooled
Tool Capacity	40+1 SMTC
Tool To Tool	4.20 s
Chip To Chip	6.30 s
Max Tool Diameter	4.0 in
Max Tool Weight	30.0 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	12.7 m/min (500 ipm)
Rapid Traverse X	22.9 m/min (900 ipm)
Rapid Traverse Y	22.9 m/min (900 ipm)
Rapid Traverse Z	18.0 m/min (710 ipm)
Machine Weight	12,247 kg (27,000 lb)
CNC Control	Haas Next Generation Control (NGC)
Coolant Capacity	55 gal
Air Required	4 scfm @ 100 psi
Electrical Low	220 VAC 3-phase, 80 A
Electrical High	440 VAC 3-phase, 40 A
Travels	S.A.E
X Axis	50.00 in
Y Axis	30.00 in
Z Axis	28.00 in
Spindle Nose To Platter	4.0 in
Spindle	S.A.E
Max Rating	60.0 hp
Max Speed	179 °/sec
Max Torque	170.0 ft-lbf @ 1800 rpm
Drive System	Inline Direct-Drive
Taper	CT or BT 50
Bearing Lubrication	Air / Oil Injection
Cooling	Air Cooled
B Axis Tilt	S.A.E
Travel	360 °
Torque	1854 ft-lbf
Brake Torque	900 ft-lbf
C Axis Rotation	S.A.E
Max Part Swing	39.0 in
Platter	S.A.E
Platter Diameter	30.00 in
Max Weight On Platter	1000 lb
Max Weight On Platter W Pallet Pool	500 lb
T Slot Width	0.626 in to 0.630 in
Number Of Std T Slots	7
Feedrates	S.A.E
Max Cutting	833 ipm
Rapids On X	1200 ipm
Rapids On Y	1200 ipm
Rapids On Z	1200 ipm
Axis Motors	S.A.E
Max Thrust X	3300 lbf
Max Thrust Y	3300 lbf
Max Thrust Z	4050 lbf
Tool Changer	S.A.E
Type	SMTC
Capacity	30+1
Max Tool Diameter Large	7.0 in
Max Tool Length	16.00 in
General	S.A.E
Air Requirements	S.A.E
Inline Air Hose	3/8 in
Coupler	3/8 in
Air Pressure Min	80 psi
Electrical Specification	S.A.E
Input Ac Voltage Low	220 VAC
Full Load Amps Low	105 A
Input Ac Voltage High	440 VAC
Full Load Amps High	53 A
Dimensions Shipping	S.A.E
Domestic Pallet	177.0 in x 110.0 in x 121.0 in
Export Crate	177.0 in x 112.5 in x 125.0 in
Machine Weight	18820 lb
Domestic Pallet W 701 Smtc	176.0 in x 110.0 in x 134.0 in
Export Crate W 701 Smtc	176.0 in x 112.5 in x 138.0 in
Weight W 701 Smtc	18,880 lb
Export Crate For Sheet Metal	125 in x 45 in x 47 in
Weight For Sheet Metal Crate	1000 lb

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

Strengths & Limitations

Strengths

50-taper torque (460 Nm) combined with SS-class axis speeds delivers both cutting authority and fast positioning
1,016 mm (40 in) trunnion table with 2,000 lb capacity handles large, heavy 5-axis workpieces
50x30x25-inch travel is the largest work envelope in the Haas UMC lineup
40+1 SMTC provides generous tool capacity for complex 5-axis programs with many cutters
Faster rapids than the standard UMC-1250/50 reduce non-cutting time on large-envelope moves
Significantly lower cost than European and Japanese 50-taper 5-axis machines with similar capability

Limitations

6,000 RPM max speed is limiting for aluminum 5-axis contouring at high surface speeds
50-taper 5-axis tooling library is expensive to build from scratch
12,247 kg (27,000 lb) machine weight requires reinforced floor and heavy rigging
Learning curve for 5-axis programming if transitioning from 3-axis work
Chip-to-chip time of 6.2 seconds is slower than 40-taper variants due to heavier tooling

Best For

Mold and die shops needing 5-axis access for complex cavity work in tool steel with 50-taper torque Aerospace shops machining steel and titanium structural components at complex angles Energy sector manufacturers producing impellers, valve bodies, and pump housings in ferrous alloys Heavy equipment manufacturers requiring 5-axis machining of large steel and cast iron components Job shops cutting heavy ferrous materials where both 50-taper torque and fast positioning are required

Frequently Asked Questions

01 What does a Haas UMC-1250SS-50 cost?

Base price starts around $300,000. With through-spindle coolant, probing, and production options, expect $345,000-$385,000. This remains significantly less than European 50-taper 5-axis machines with comparable work envelopes.

02 How does the UMC-1250SS-50 differ from the UMC-1250/50?

The SS-50 adds faster rapids and improved servo tuning compared to the standard /50. Both share the same 50-taper 6,000 RPM spindle, 40-inch trunnion, and 2,000 lb capacity. The SS-50 costs roughly $15,000-$20,000 more but reduces cycle times through faster positioning.

03 Should I choose the UMC-1250SS-50 or UMC-1250SS (40-taper)?

Choose the SS-50 for heavy ferrous 5-axis work where the 460 Nm of torque drives large cutters through steel and cast iron. Choose the 40-taper UMC-1250SS for aluminum and high-speed work where the 15,000 RPM spindle provides better surface footage. The material mix determines the right choice.

04 Can the UMC-1250SS-50 do simultaneous 5-axis?

Yes. It supports full simultaneous 5-axis contouring with the NGC control. The trunnion's +110/-35 degree tilt range and continuous 360-degree rotation provide comprehensive part access. Many users also leverage 3+2 positioning for maximum rigidity on heavy cuts.