Haas DS-40Y
Key Specifications
X Travel
Z Travel
Max Spindle
Spindle Power
chuck size
max part swing
Overview
The Haas DS-40Y is the largest dual-spindle turning centre Haas builds with Y-axis capability. A 381 mm (15 in) chuck, 902 mm (35.5 in) maximum swing and 1,118 mm (44 in) of Z-travel put it well above the DS-30Y, and the 40 hp spindle delivers 1,898 Nm (1,400 ft-lbf) at 150 RPM.
Dual spindle plus Y-axis is the combination that makes a part complete. Turn and mill the front on the main spindle, hand off to the secondary spindle, finish the back, and the part comes off the machine done. The 508 mm (20 in) X-travel and 12-station turret give room for the milling tools that make the Y-axis worth having.
That 1,400 ft-lbf torque figure at 150 RPM is the standout number, and it's the same spindle arrangement used in the big-bore TL-3B. On a 15-inch chuck it means heavy interrupted cuts in alloy steel are realistic rather than aspirational. Bar capacity is 102 mm (4 in).
US$290,995 is the list price. The natural comparisons are Doosan's Puma TT series, Okuma's LB-EX with Y and sub-spindle, and Nakamura-Tome's larger twin-spindle machines. Those generally cost more and, in the Okuma and Nakamura cases, bring better rigidity and thermal control. The Haas argument is price, control familiarity and dealer coverage.
Specs sourced from Haas published data.
Full Specifications
| Parameter | Value |
|---|---|
| Chuck Size | 381 mm (15.0 in) |
| Max Part Swing | 902 mm (35.5 in) |
| Max Cutting Diameter With Bmt75 Turret | 699 mm (27.50 in) |
| Max Cutting Length | 1118 mm (44.0 in) |
| Bar Capacity | 102 mm (4.00 in) |
| X-Axis Travel | 508 mm (20.00 in) |
| Z-Axis Travel | 1118 mm (44.00 in) |
| Rapid Traverse X | 12.0 m/min (472 ipm) |
| Rapid Traverse Y | 12.0 m/min (472 ipm) |
| Rapid Traverse Z | 18.0 m/min (710 ipm) |
| Max Thrust X | 24465 N (5500 lbf) |
| Max Thrust Y | 10231 N (2300 lbf) |
| Max Thrust Z | 40034 N (9000 lbf) |
| Spindle Drive | 2-Speed Gearbox |
| Spindle Motor Power | 29.8 kW (40.0 hp) |
| Max Spindle Speed | 2400 rpm |
| Spindle Torque Max | 1898.0 Nm @ 150 rpm (1400.0 ft-lbf @ 150 rpm) |
| Spindle Bore | 117.3 mm (4.62 in) |
| Xp Option Drive System | 2-Speed Gearbox |
| Xp Option Max Rating | 41.0 kW (55.0 hp) |
| Xp Option Max Speed | 2400 rpm |
| Xp Option Max Torque | 2847.0 Nm @ 150 rpm (2100.0 ft-lbf @ 150 rpm) |
| Xp Option Input Ac Voltage 3 Phase Low | 220 VAC |
| Xp Option Full Load Amps 3 Phase Low | 105 A |
| Xp Option Input Ac Voltage 3 Phase High | 440 VAC |
| Xp Option Full Load Amps 3 Phase High | 53 A |
| Main Spindle C Axis Max Rating | 3.7 kW (5.0 hp) |
| Main Spindle C Axis Max Speed | 49 rpm |
| Main Spindle C Axis Positioning | 0.01 ° |
| Main Spindle C Axis Brake Diameter | 546 mm (21.5 in) |
| Main Spindle C Axis Brake Holding Torque | 610 Nm (450 ft-lbf) |
| Secondary Spindle Chuck Size | 254 mm (10.0 in) |
| Secondary Spindle Max Rating | 22.4 kW (30.0 hp) |
| Secondary Spindle Max Speed | 3400 rpm |
| Secondary Spindle Max Sync Speed W Main Spindle | 2400 rpm |
| Secondary Spindle Max Torque | 406.7 Nm @ 500 rpm (300.0 ft-lbf @ 500 rpm) |
| Secondary Spindle Spindle Bore Without Chuck And Drawbar Ins | 88.9 mm (3.50 in) |
| Secondary Spindle C Axis Max Rating | 3.7 kW (5.0 hp) |
| Secondary Spindle C Axis Max Speed | 60 rpm |
| Secondary Spindle C Axis Positioning | 0.01 ° |
| Secondary Spindle C Axis Brake Diameter | 13.9 in |
| Secondary Spindle C Axis Brake Holding Torque | 339 Nm (250 ft-lbf) |
| Secondary Spindle Positioning M119 Positioning | 0.25 ° |
| Secondary Spindle Positioning M119 Brake Diameter | 353 mm (13.9 in) |
| Turret Tool Count | 12 Stations |
| Index Time One Tool | 2 s |
| Boring Bar Rear Clearance From Turret Face | 114.0 mm (4.50 in) |
| Live Tooling Max Speed | 4000 rpm |
| Coolant Capacity | 360 L (95 gal) |
| Air Required | 113.0 L/min @ 6.9 bar (4 scfm @ 100 psi) |
| Air Pressure Min | 5.5 bar (80 psi) |
| Drive System | 2-Speed Gearbox |
| Weight Export Crate | 10,378.0 kg (22,880 lb) |
| Electrical Low | 220 VAC 3-phase, 70 A |
| Electrical High | 440 VAC 3-phase, 35 A |
| CNC Control | Haas Next Generation Control (NGC) |
Specifications sourced from haascnc.com — verified 2026-08-31
Strengths & Limitations
Strengths
- 1,898 Nm (1,400 ft-lbf) at 150 RPM supports heavy interrupted cuts in alloy steel on a 15-inch chuck
- Dual spindle with Y-axis completes parts front and back without a second machine
- 902 mm (35.5 in) maximum swing and 1,118 mm (44 in) Z handle large turned components
- 12-station turret with live tooling covers milling, drilling and cross work in one setup
- Priced below comparable twin-spindle Y-axis machines from Okuma and Nakamura-Tome
- 381 mm (15 in) chuck is the largest in the Haas dual-spindle range
Limitations
- 2,400 RPM spindle ceiling limits small-diameter and non-ferrous production speed
- Rigidity and thermal stability trail Okuma and Nakamura-Tome twin-spindle machines
- 102 mm (4 in) bar capacity is modest relative to the 15-inch chuck size
- Dual-spindle programming and part handoff add setup complexity over a single-spindle lathe
- Y-axis stroke is limited compared with a dedicated mill-turn centre, restricting off-centre milling depth
Best For
Frequently Asked Questions
01
Haas lists US$290,995 as of August 2026. With tooling, a bar feeder and parts handling, a production-ready cell typically runs US$330,000 to US$360,000.
02
Off-centre milling, flats, keyways, cross holes and contoured features that a turret with live tooling alone can't reach. Combined with the sub-spindle, it means most parts come off complete rather than moving to a mill.
03
The DS-40Y is a considerably larger machine: 15-inch chuck against 10-inch, 35.5-inch swing, and a 40 hp spindle with 1,400 ft-lbf. If your parts fit a DS-30Y, that machine costs much less and spins faster.
04
On large diameters, no, since surface speed comes from diameter. For small parts or aluminium production it is, and a smaller ST or DS machine will cycle faster on that work.
05
A second spindle, drawbar and chuck to service, plus the handoff alignment between spindles. Expect somewhat more setup and periodic alignment checking than a single-spindle lathe, and budget service time accordingly.
Videos
Haas Automation, Inc.
Haas Automation, Inc.
Community Discussions
Operators discuss dual-spindle handoff practice on Haas DS lathes, including how repeatable overall length stays when a part passes between chucks.
Links to community discussions. Summaries are editorial — visit the original thread for full context.
Related Machines
Mazak Integrex i-200
Okuma Multus B250II
DMG Mori CTX gamma 2000 TC
DMG Mori NTX 2000
DN Solutions SMX 3100ST
