Nexturn NST56
Image: nexturn.co.kr, Nexturn
Key Specifications
Max Spindle
Spindle Power
Max Turn Length
bar capacity
main spindle drilling tapping
back end face drilling tapping
How much does the Nexturn NST56 cost?
Price estimate
We do not have a price for the Nexturn NST56 that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.
Overview
The Nexturn NST56 is a three-path automatic lathe for 56 mm (2.2 in) bar, with a main spindle rated 11 / 15 kW (14.8 / 20.1 hp) and a 12 station turret working alongside a gang type tool post and a sub spindle. Turning length is 150 mm (5.9 in) and both spindles run to 5,000 rpm.
Why a turret on a bar machine of this kind? A gang post is quick but holds only so many tools near a large bar. The NST56 keeps a small gang post, four OD tools and four cross live tools, for the short moves, and adds a turret on its own three axes for everything else. Nexturn says the turret has an independent drive, indexes by servo motor without lifting, and accepts a live tool at any of its 12 stations. Turret and gang post can cut together while the back working station, seven tools with three of them live, finishes the previous part on the sub spindle.
The spindle is built for the bar size. Nexturn describes a built-in main motor with a hydraulic disc brake and an oil cooling system, and gives the bar remnant as less than 80 mm. The sub spindle is 3.7 / 5.5 kW (5.0 / 7.4 hp). On-centre drilling is listed at 20 mm (0.8 in) with M16 tapping, while gang, turret and back-end live tools are held to 16 mm, 16 mm and 13 mm (0.5 in).
Plan the installation early. The machine weighs 6,400 kg (14,109 lb), draws 45 kVA and holds 450 L of coolant. Chip conveyor, automatic fire extinguisher and a high pressure pump are optional accessories.
Full Specifications
| Parameter | Value |
|---|---|
| Bar Capacity | 56 mm (2.2 in) |
| Max Turning Length | 150 mm (5.9 in) |
| Main Spindle Drilling Tapping | 20 mm (0.8 in) / M16 |
| Back End Face Drilling Tapping | 13 mm (0.5 in) / M10 |
| Cross Disc Mill Diameter | 50 mm (2.0 in) |
| Max Spindle Speed | 5,000 rpm |
| Sub Spindle Speed | 5,000 rpm |
| Front Tools OD Cross Live | 4 / 4 |
| Cross Spindle Speed | 6,000 rpm |
| Front Tools Drilling Tapping | 16 mm (0.6 in) / M12 |
| Front Tools Tool Shank | □20 × 125 mm (0.8 × 4.9 in) |
| Turret Stations | 12 |
| Turret Live Tool Speed | 6,000 rpm |
| Turret Live Tool Drilling Tapping | 16 mm (0.6 in) / M12 |
| Turret Tool Shank | □20 × 125 mm (0.8 × 4.9 in) |
| Back End Face Tools | 7 (Fixed 4, Live 3) |
| Rapid Traverse Y1 Y2 Y3 | 24 m/min |
| Main Spindle Positioning | Cs + 1/1,000° |
| Sub Spindle Positioning | Cs + 1/1,000° |
| Spindle Motor Power | 11 / 15 kW (14.8 / 20.1 hp) |
| Sub Spindle Power | 3.7 / 5.5 kW (5.0 / 7.4 hp) |
| Cross Back Tool Motor | 2.2 kW (3.0 hp) / 1.0 kW (1.3 hp) |
| Servo Motor | 2.5 kW (3.4 hp) |
| Coolant Pump Motor | 0.9 + 0.9 kW |
| Lubrication Pump Motor | 0.04 kW (0.05 hp) |
| Coolant Tank | 450 L |
| Lubrication Tank | 2 L |
| Cooling Oil Tank | 12 L |
| Power Requirement | 45 kVA |
| Center Height | 1,100 mm (43.3 in) |
| Machine Weight | 6,400 kg (14,109 lb) |
| CNC Control | FANUC 31i-B |
| Controlled Axes | 11 |
| Axis Designation | X1, Z1, Y1, X2, Z2, Y2, X3, Z3, Y3, C1, C3 |
| Min Input Increment | 0.001 mm |
| Cutting Feed Rate | 1~6,000 mm/min |
| Tool Offsets | 128 sets |
| Program Memory | 1Mbyte |
| Registerable Programs | 1,000 sets |
Specifications sourced from nexturn.co.kr — verified 2026-10-05
Strengths & Limitations
Strengths
- 11 / 15 kW (14.8 / 20.1 hp) built-in main spindle motor for 56 mm (2.2 in) bar
- 12 station turret with live tooling at every station, on its own three axes
- Three-path control: turret, gang tool post and back working station can cut at the same time
- 20 mm (0.8 in) on-centre drilling and M16 tapping
- Stated bar remnant of less than 80 mm
Limitations
- Turning length is 150 mm (5.9 in), where the NST45 offers 340 mm (13.4 in)
- Spindle speed is limited to 5,000 rpm
- Live-tool drilling in the turret and gang post stops at 16 mm (0.6 in) and M12
- 6,400 kg (14,109 lb) and a 45 kVA supply
- Chip conveyor is an optional accessory
Best For
Frequently Asked Questions
01
Bar up to 56 mm (2.2 in) in diameter with a turning length of 150 mm (5.9 in). The main spindle drills to 20 mm (0.8 in) and taps to M16, and a cross disc mill can be 50 mm (2.0 in) across. Nexturn states a remnant of less than 80 mm at the end of the bar.
02
They are separate tool carriers on separate paths. The gang post holds four OD and four cross live tools; the turret has 12 stations and three-axis control. Nexturn lists simultaneous cross milling and cross off-centre machining with the turret, and three-path control lets the back working station run at the same time.
03
Bar capacity. The NST67 takes 67 mm (2.6 in) bar and the NST56 takes 56 mm (2.2 in). The remaining rows of the table are the same for both, including the 11 / 15 kW (14.8 / 20.1 hp) main spindle, 5,000 rpm and the 6,400 kg (14,109 lb) weight.
04
A FANUC 31i-B with eleven controlled axes, designated X1, Z1, Y1, X2, Z2, Y2, X3, Z3, Y3, C1 and C3 in the brochure. It stores 128 sets of tool offsets and up to 1,000 registered programs, with a minimum input increment of 0.001 mm.
More from Nexturn
Other Swiss-Type Lathes
Citizen Cincom L32-XII ATC
Citizen Cincom M32-VIII
Star Micronics SK-51 Type A
Tsugami SS327-III-5AX
