Akira Seiki SL40L
Key Specifications
Max Spindle
Spindle Power
Max Turn Length
control
axes configuration
swing over bed
How much does the Akira Seiki SL40L cost?
Price estimate
We do not have a price for the Akira Seiki SL40L 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
With a maximum cutting length of 1,500 mm (59 in), the Akira Seiki SL40L is the longest lathe in the SL two-axis range. Z travel is 1,520 mm (58.9 in) and the tailstock travels 1,550 mm (61 in), on an MT5 quill with a 100 mm (3.9 in) stroke.
It is the long-bed form of the SL40 and keeps that machine's geared headstock: A2-11 nose, 2,500 rpm, 60 HP (44.7 kW) and 2,944 Nm (2,171 lb-ft) at peak. A 15" chuck is standard and an 18" chuck optional, over a 103 mm (4.1 in) draw tube bore. Maximum cutting diameter is 550 mm (21.7 in).
What does a metre and a half of turning length cover? Propeller and pump shafts, rolls, long hydraulic cylinders, oilfield tubulars within the bore size. On work like that the cut is long and continuous, so torque and bed mass matter more than indexing speed. The machine weighs 7,700 kg (16,976 lb) and measures 4,525 x 2,165 mm (178 x 85 in).
The 12-station turret takes 32 mm (1.26 in) OD tools and 50 mm (1.97 in) boring bars and indexes in 0.5 s. Rapid feed is 30 m/min (1,181 ipm) in X and 36 m/min (1,417 ipm) in Z. Power requirement is 35 kVA. A chip drawer is standard; given the chip volume, the optional conveyor is worth specifying.
Full Specifications
| Parameter | Value |
|---|---|
| CNC Control | AKIRA Mi:845 (Fanuc G code compatible) |
| Axes Configuration | X+Z |
| Swing Over Bed | 750 mm (29.5 in) |
| Swing Over Cross Slide | 550 mm (21.7 in) |
| Max Turning Diameter | 550 mm (21.7 in) |
| Max Turning Length | 1,500 mm (59 in) |
| Chuck Size | 15" STD; 18" OPT |
| Draw Tube Bore | 103 mm (4.1 in) |
| Max Spindle Speed | 2,500 rpm |
| Spindle Motor Power | 60 HP (44.7 kW) |
| Spindle Torque | 2,944 Nm (2,171 lb-ft) (gear box) |
| Spindle Nose | A2-11 |
| X Axis Travel | 285 + 25 mm (11.2 + 1 in) |
| Z Axis Travel | 1,520 mm (58.9 in) |
| Rapid Traverse Xz | X 30 m/min (1,181 ipm), Z 36 m/min (1,417 ipm) |
| Cutting Feed Rate | 10 m/min (394 ipm) |
| Turret Stations | 12 |
| OD Tool Size | 32 mm (1.26 in) |
| Boring Bar Shank | 50 mm (1.97 in) |
| Turret Index Time | 0.5 s |
| Quill Travel | 100 mm (3.9 in) |
| Tailstock Travel | 1,550 mm (61 in) |
| Quill Taper | MT5 |
| Chip Disposal | Drawer (STD); Conveyor (OPT) |
| Power Requirement | 35 kVA |
| Machine Dimensions | 4,525 x 2,165 mm (178 x 85 in) |
| Machine Weight | 7,700 kg (16,976 lb) |
Specifications sourced from akiraseiki.com — verified 2026-10-04
Strengths & Limitations
Strengths
- 1,500 mm (59 in) cutting length with 1,550 mm (61 in) of tailstock travel
- Geared spindle: 2,944 Nm (2,171 lb-ft) and 60 HP (44.7 kW) at peak
- 103 mm (4.1 in) bore with a 15" chuck or optional 18" chuck
- MT5 quill for heavy centre loads
Limitations
- 4,525 x 2,165 mm (178 x 85 in) of floor and 7,700 kg (16,976 lb)
- Maximum spindle speed of 2,500 rpm
- No steady rest is listed for a 1,500 mm cutting length
- Conveyor is an option, a drawer is standard
Best For
Frequently Asked Questions
01
Maximum cutting length is 1,500 mm (59 in), with 1,520 mm (58.9 in) of Z travel and 1,550 mm (61 in) of tailstock travel. Maximum cutting diameter is 550 mm (21.7 in).
02
Only in length and what follows from it. The SL40 has a 950 mm (37.4 in) cutting length, weighs 6,700 kg (14,771 lb) and measures 3,900 x 2,165 mm (154 x 85 in). The SL40L is longer and heavier, with the same spindle, chuck and turret.
03
2,944 Nm (2,171 lb-ft) at peak, marked gear box in the maker's table, with 60 HP (44.7 kW) peak power and a 2,500 rpm maximum speed on an A2-11 nose.
04
12 stations, with an OD tool size of 32 mm (1.26 in) and a boring bar shank of 50 mm (1.97 in). Tool change time with a neighbouring tool is 0.5 s.
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