Haas EC-500/50
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The Haas EC-500/50 adds a 50-taper spindle to the popular EC-500 platform, creating a 500mm-class HMC with serious torque in a relatively compact footprint. It shares the same 813 x 635 x 711 mm (32 x 25 x 28 in) travel envelope, twin-pallet system, and cycloidal B-axis drive as the 40-taper EC-500, but the spindle changes the machine's character significantly.
The 2-speed gearbox spindle delivers 460 Nm (340 ft-lbf) of torque at 700 RPM with 22.4 kW (30 hp) of power and a max speed of 7,500 RPM. That's nearly four times the torque of the 40-taper version, making the EC-500/50 a much better choice for heavy steel and cast iron work. The CT or BT 50 taper provides the tool clamping force needed for large face mills, boring bars, and heavy roughing operations.
The standard 50+1 SMTC handles tools up to 13.6 kg (30 lb) and 203 mm (8 in) diameter with adjacent empty pockets, a substantial upgrade from the 40-taper's 30+1 changer with 5.4 kg max tool weight. Tool-to-tool time is 4.2 seconds and chip-to-chip averages 6.3 seconds, both slower than the 40-taper version due to the heavier 50-taper tools.
Rapids are 18.0 m/min (710 ipm) on all axes, slower than the 40-taper's 35.6 m/min. This is partly due to the heavier spindle assembly and partly reflects the machine's design priorities — torque and rigidity over speed. At 11,820 kg (26,000 lb), the EC-500/50 weighs about 2,700 kg more than the 40-taper EC-500.
The twin 500 mm pallets each handle 400 kg (880 lb) with 15-second pallet changes. The B-axis rotary maintains the same 575 Nm continuous torque and 3-second 90-degree rotation as the EC-500. Base price starts around $350,000. For shops that need 50-taper cutting capability with pallet-changing productivity, the EC-500/50 offers that combination at a lower price point than most competitors. Specs sourced from Haas Automation published data.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 813 mm (32 in) |
| Y-Axis Travel | 635 mm (25 in) |
| Z-Axis Travel | 711 mm (28 in) |
| Max Spindle Speed | 7,500 RPM |
| Spindle Taper | CT50 / BT50 |
| Spindle Motor Power | 30.0 hp |
| Spindle Torque Max | 460 Nm (340 ft-lbf) @ 700 RPM |
| Spindle Drive | 2-Speed Gearbox |
| Spindle Cooling | Air Cooled |
| Pallet Size | 500 x 500 mm (19.69 x 19.69 in) |
| Pallet Quantity | 2 |
| Max Pallet Load | 880 lb |
| Max Part Diameter | 29.5 in |
| Max Part Height | 36.5 in |
| Pallet Change Time | 15 s |
| B Axis Rotation Time | 3 sec (90 deg) |
| B Axis Torque Continuous | 575 Nm (424 ft-lbf) |
| B Axis Brake Torque | 3,390 Nm (2,500 ft-lbf) |
| B Axis Indexing Accuracy | ± 15 arc-sec |
| B Axis Repeatability | 10 arc-sec |
| B Axis Rapids | 150 deg/sec |
| Tool Capacity | 50+1 SMTC |
| Tool To Tool | 4.20 s |
| Chip To Chip | 6.30 s |
| Max Tool Diameter | 4.0 in |
| Max Tool Length | 16.00 in |
| Max Tool Weight | 30.0 lb |
| Max Cutting Feedrate | 12.7 m/min (500 ipm) |
| Rapid Traverse X | 18.0 m/min (710 ipm) |
| Rapid Traverse Y | 18.0 m/min (710 ipm) |
| Rapid Traverse Z | 18.0 m/min (710 ipm) |
| Max Thrust X | 4054 lbf |
| Max Thrust Y | 2854 lbf |
| Max Thrust Z | 4054 lbf |
| Machine Weight | 11,820 kg (26,000 lb) |
| CNC Control | Haas Next Generation Control (NGC) |
| Coolant Capacity | 95 gal |
| Air Required | 9 scfm @ 100 psi |
| Electrical Low | 220 VAC 3-phase, 70 A |
| Electrical High | 440 VAC 3-phase, 35 A |
| Travels | S.A.E |
| X Axis | 32.00 in |
| Y Axis | 25.00 in |
| Z Axis | 28.00 in |
| Spindle Centerline To Pallet | 1.10 in |
| Spindle | S.A.E |
| Max Rating | 30.0 hp |
| Max Speed | 7500 rpm |
| Max Torque | 340.0 ft-lbf @ 700 rpm |
| Drive System | 2-Speed Gearbox |
| Taper | CT or BT 50 |
| Bearing Lubrication | Air / Oil Injection |
| Cooling | Air Cooled |
| Integrated 4th Axis | S.A.E |
| 90 Rotation Time | 3 sec |
| Max Weight On Platter | 880 lb |
| Rotational Torque | 575 Nm |
| Backlash | 30 arc-sec |
| Gear Ratio | 106:1 |
| Brake Torque | 2500 ft-lbf |
| Min Resolution | 0.001 ° |
| Indexing Accuracy | ± 15 arc-sec |
| Repeatability | 10 arc-sec |
| Rapids On B | 150 °/sec |
| Feedrates | S.A.E |
| Max Cutting | 500 ipm |
| Rapids On X | 710 ipm |
| Rapids On Y | 710 ipm |
| Rapids On Z | 710 ipm |
| Axis Motors | S.A.E |
| Pallet Changer | S.A.E |
| Pallet Length | 19.69 in |
| Pallet Width | 19.69 in |
| General | S.A.E |
| Tool Changer | S.A.E |
| Type | SMTC |
| Capacity | 50+1 |
| Max Tool Diameter Large | 8.0 in |
| Air Requirements | S.A.E |
| Inline Air Hose | 1/2 in |
| Coupler | 1/2 in |
| Air Pressure Min | 100 psi |
| Electrical Specification | S.A.E |
| Input Ac Voltage Low | 220 VAC |
| Full Load Amps Low | 70 A |
| Input Ac Voltage High | 440 VAC |
| Full Load Amps High | 35 A |
| Dimensions Shipping | S.A.E |
| Domestic Pallet | 230.0 in x 126.0 in x 118.0 in |
| Export Pallet | 230.0 in x 126.0 in x 123.0 in |
| Machine Weight | 26000 lb |
| Note Pre Production Specifications And Dimensions Subject To Change Without Notice | NEW MODEL |
| Axis Travels | 813 x 635 x 711 mm |
| Optional Spindle Specifications | 10,000 rpm, 44.7 kW, 50T |
| Tool Changer Capacity | 50+1 |
| Rapids | 25.4m/min |
| Maximum Feedrate | 12.7 m/min |
| Maximum Weight On Pallet | 400 kg |
Specifications sourced from haascnc.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 460 Nm (340 ft-lbf) of torque at 700 RPM makes it a serious steel and cast iron machining platform
- 50+1 SMTC standard with 13.6 kg max tool weight handles heavy 50-taper toolholders and large cutters
- Twin-pallet system with 15-sec changes maintains spindle uptime during load/unload operations
- 11,820 kg (26,000 lb) machine weight provides excellent vibration damping for heavy cuts
- Same cycloidal B-axis drive and pallet system as EC-500, proven and reliable in production
- 50-taper HMC capability at ~$350K undercuts most competitors by $100K or more
Limitations
- 18.0 m/min (710 ipm) rapids are half the speed of the 40-taper EC-500's 1,400 ipm
- 6.3 sec chip-to-chip is 75% slower than the EC-500's 3.6 sec due to heavier 50-taper tools
- 7,500 RPM max spindle speed limits high-speed machining of aluminum
- 400 kg (880 lb) max pallet load is the same as the 40-taper version — no increase for heavier work
- 26,000 lb weight requires more robust floor support and heavier rigging for installation
Best For
Frequently Asked Questions
01
Base price starts around $350,000. With through-spindle coolant, probing, and other common options, expect $390,000-$420,000. That's about $39,000 more than the 40-taper EC-500.
02
The EC-500/50 swaps the 40-taper 8,100 RPM direct-drive spindle for a 50-taper 7,500 RPM gearbox spindle with 460 Nm of torque (vs 122 Nm). It comes with a 50+1 SMTC (vs 30+1) but has slower rapids at 710 ipm (vs 1,400 ipm). Choose based on whether you need speed (40T) or torque (50T).
03
The EC-630 has larger 630mm pallets with 680 kg load capacity, more travel (1016 x 940 x 1016 mm), and handles significantly bigger parts. It costs about $100K more. Choose the EC-500/50 for parts that fit on 500mm pallets, the EC-630 when you need the larger work envelope.
04
No. The EC-500 and EC-500/50 are different machines with different spindle cartridges, tool changers, and casting designs. You cannot convert between them. This is a factory configuration decision.
05
If you run a mix of steel and aluminum, the optional 10,000 RPM, 60 hp spindle significantly expands the machine's range. It costs extra but it's the only way to get both 50-taper rigidity and reasonable aluminum machining speeds on this platform.
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