Haas Automation 5-Axis Machining Centers

Haas UMC-1250SS

List US$359,995 Updated 2026-08-10

Key Specifications

X Travel

1,270 mm (50.00 in)

Y Travel

762 mm (30.00 in)

Z Travel

711 mm (28.00 in)

Max Spindle

12,000 rpm

Spindle Taper

CT40 | BT40 | HSK-A63

Tool Capacity

30+1

Overview

The Haas UMC-1250SS is a trunnion-style 5-axis machining center: a 762 mm (30.00 in) platter carried on a tilting B axis and a rotating C axis, under a 40-taper spindle. Travels are 1,270 × 762 × 711 mm (50.00 × 30.00 × 28.00 in), with the spindle nose working between 102 mm and 813 mm (4.0 to 32.0 in) above the platter. Maximum part swing is 991 mm (39.0 in), so parts noticeably larger than the platter will still clear as the trunnion rotates.

Platter load is the figure that governs fixture design: 454.0 kg (1,000 lb) standard, dropping to 226.8 kg (500 lb) when the machine is fed by a pallet pool. Anyone planning automated production should design to the lower number from the outset, because a steel fixture plus part passes 226.8 kg quickly. Seven T-slots give reasonable freedom in laying out multi-part fixturing.

The B axis travels from 120° to -35° at up to 170°/sec, with 3,037 Nm (2,240 ft-lbf) of continuous torque and a 2,712 Nm (2,000 ft-lbf) brake. C rotates a full 360° at 179°/sec with 2,514 Nm (1,854 ft-lbf) continuous and a 1,220 Nm (900 ft-lbf) brake. Those rotary torque and brake figures are what make real cutting in 3+2 positions possible rather than restricting the rotaries to light finishing passes.

The inline direct-drive spindle is rated 22.4 kW (30.0 hp) to 12,000 rpm with 122.0 Nm (90.0 ft-lbf) at 2,000 rpm, available in CT40, BT40 or HSK-A63. That is a speed-oriented 40-taper package: aluminium, non-ferrous work and finishing passes in steel and titanium suit it better than heavy roughing. Rapids are 30.5 m/min (1,200 ipm) on all three linear axes with a 21.2 m/min (833 ipm) maximum cutting feedrate, and thrust is 14,680 N (3,300 lbf) on X and Y, 18,015 N (4,050 lbf) on Z.

The side-mount tool changer holds 30+1 tools up to 64 mm (2.5 in) diameter, or 127 mm (5.0 in) with adjacent pockets empty, 305 mm (12.00 in) from the gage line and 5.4 kg (12.0 lb). Tool-to-tool is 1.80 s and chip-to-chip 2.40 s. The machine weighs 8,537 kg (18,820 lb) and holds 208 L (55 gal) of coolant.

Full Specifications

Parameter	Value
X-Axis Travel	1,270 mm (50.00 in)
Y-Axis Travel	762 mm (30.00 in)
Z-Axis Travel	711 mm (28.00 in)
Spindle Nose To Platter Max	813 mm (32.0 in)
Spindle Nose To Platter Min	102 mm (4.0 in)
Spindle Motor Power	22.4 kW (30.0 hp)
Max Spindle Speed	12,000 rpm
Spindle Torque Max	122.0 Nm @ 2,000 rpm (90.0 ft-lbf @ 2,000 rpm)
Spindle Drive	Inline Direct-Drive
Spindle Taper	CT40 \| BT40 \| HSK-A63
Spindle Bearing Lubrication	Air / Oil Injection
Spindle Cooling	Liquid Cooled
B Axis Travel	120° to -35°
B Axis Speed Max	170 °/sec
B Axis Torque Continuous	3,037 Nm (2,240 ft-lbf)
B Axis Brake Torque	2,712 Nm (2,000 ft-lbf)
C Axis Travel	360°
C Axis Speed Max	179 °/sec
C Axis Torque Continuous	2,514 Nm (1,854 ft-lbf)
C Axis Brake Torque	1,220 Nm (900 ft-lbf)
Max Part Swing	991 mm (39.0 in)
Platter Diameter	762 mm (30.00 in)
Platter Load Max	454.0 kg (1,000 lb)
Platter Load Max With Pallet Pool	226.8 kg (500 lb)
T Slot Width	15.90 mm to 16.00 mm (0.626 in to 0.630 in)
T Slots	7
Max Cutting Feedrate	21.2 m/min (833 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)
Max Thrust X	14,680 N (3,300 lbf)
Max Thrust Y	14,680 N (3,300 lbf)
Max Thrust Z	18,015 N (4,050 lbf)
Tool Changer Type	SMTC
Tool Capacity	30+1
Max Tool Diameter	64 mm (2.5 in) full
Max Tool Diameter Large	127 mm (5.0 in) adjacent empty
Max Tool Length	305 mm (12.00 in) from gage line
Max Tool Weight	5.4 kg (12.0 lb)
Tool To Tool	1.80 s
Chip To Chip	2.40 s
Coolant Capacity	208 L (55 gal)
Air Required	113.0 L/min @ 6.9 bar (4 scfm @ 100 psi)
Air Pressure Min	5.5 bar (80 psi)
Electrical Low	220 VAC 3-phase, 70 A
Electrical High	440 VAC 3-phase, 35 A
Machine Weight	8,537 kg (18,820 lb)

Specifications sourced from haascnc.com — verified 2026-08-09

Strengths & Limitations

Strengths

Travels of 1,270 x 762 x 711 mm (50.00 x 30.00 x 28.00 in) are large for a 40-taper 5-axis machine, and maximum part swing of 991 mm (39.0 in) means parts bigger than the platter still clear as the trunnion rotates
Rotary torque is the substance here: 3,037 Nm (2,240 ft-lbf) continuous on B with a 2,712 Nm (2,000 ft-lbf) brake, and 2,514 Nm (1,854 ft-lbf) on C with a 1,220 Nm (900 ft-lbf) brake
B travels from 120° to -35° at up to 170°/sec and C rotates a full 360° at 179°/sec, so repositioning between faces costs little time
The 12,000 rpm inline direct-drive spindle is available in CT40, BT40 or HSK-A63 and suits aluminium, non-ferrous work and finishing passes
Rapids run 30.5 m/min (1,200 ipm) on all three linear axes, with a maximum cutting feedrate of 21.2 m/min (833 ipm)
The side-mount changer runs 1.80 s tool-to-tool and 2.40 s chip-to-chip across 30+1 pockets

Limitations

Platter load is 454.0 kg (1,000 lb), dropping to 226.8 kg (500 lb) when the machine is fed by a pallet pool - design automated fixturing to the lower number from the outset
Spindle torque is 122.0 Nm (90.0 ft-lbf) at 2,000 rpm; this is a speed-oriented 40-taper package, so heavy steel roughing is not what it is for
Tools cap at 5.4 kg (12.0 lb) and 305 mm (12.00 in) from the gage line, which restricts heavy holders on long extensions
Tool diameter is limited to 64 mm (2.5 in) with a full magazine, or 127 mm (5.0 in) only if the adjacent pockets are left empty
At 8,537 kg (18,820 lb) with 1,270 mm of X travel, the machine still needs a properly prepared floor and real rigging
30+1 pockets can be tight for complex 5-axis programs that want roughers, finishers and probing tools resident at once

Best For

Aerospace aluminium structural parts with complex 5-axis geometry Medical implants and instruments in titanium and stainless within the platter load limit High-speed 5-axis finishing on mould and die components Shops moving into 5-axis work on aluminium and non-ferrous materials Prototype and short-run work across mixed materials needing many faces in one setup Parts up to 991 mm (39.0 in) of swing that still come in under the 454 kg platter limit

Frequently Asked Questions

01 How big a part fits the UMC-1250SS?

Travels are 1,270 x 762 x 711 mm (50.00 x 30.00 x 28.00 in), the platter is 762 mm (30.00 in) across, and maximum part swing is 991 mm (39.0 in). The spindle nose works between 102 mm and 813 mm (4.0 to 32.0 in) above the platter. Parts noticeably larger than the platter still clear as the trunnion rotates, which is why the swing figure matters as much as the platter size.

02 How much weight can the trunnion carry?

454.0 kg (1,000 lb) standard, and 226.8 kg (500 lb) when the machine is fed by a pallet pool. If automation is anywhere on the roadmap, design fixturing to the lower figure from the start - a steel plate plus part passes 226.8 kg quickly. Seven T-slots give reasonable freedom in laying out multi-part fixturing.

03 Can the UMC-1250SS cut steel?

For finishing and semi-finishing, comfortably. The spindle is rated 22.4 kW (30.0 hp) to 12,000 rpm with 122.0 Nm (90.0 ft-lbf) at 2,000 rpm, which is a speed-oriented 40-taper package. Heavy steel roughing with large cutters is not what this configuration is for - the rotary axes have the torque for it, but the spindle does not.

04 How rigid are the rotary axes for 3+2 work?

B delivers 3,037 Nm (2,240 ft-lbf) continuous with a 2,712 Nm (2,000 ft-lbf) brake; C delivers 2,514 Nm (1,854 ft-lbf) continuous with a 1,220 Nm (900 ft-lbf) brake. Those brake figures are what make real cutting in an indexed position possible, rather than restricting the rotaries to light finishing passes.

05 What are the tooling limits?

The side-mount changer holds 30+1 tools up to 64 mm (2.5 in) diameter, or 127 mm (5.0 in) with the adjacent pockets left empty, 305 mm (12.00 in) from the gage line and 5.4 kg (12.0 lb). Tool-to-tool is 1.80 s and chip-to-chip 2.40 s. The weight limit is the one most likely to bite on long 5-axis extensions.