Akira Seiki SL25
Image: akiraseiki.com, Akira Seiki
Key Specifications
Max Spindle
Spindle Power
Max Turn Length
control
axes configuration
swing over bed
How much does the Akira Seiki SL25 cost?
Price estimate
We do not have a price for the Akira Seiki SL25 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 Akira Seiki SL25 is an 8" chuck lathe with a 530 mm (20.9 in) swing, a maximum cutting diameter of 350 mm (13.8 in) and a maximum cutting length of 400 mm (15.7 in). It is the first SL model with the A2-6 spindle nose and the 12-station turret used on the larger machines.
The spindle is geared toward torque more than speed. Peak torque is 202 Nm (149 lb-ft) at a top speed of 5,000 rpm, with 17 HP (12.7 kW) of peak power; the smaller SL20 has more power, 24 HP (17.9 kW), but only 137 Nm (101 lb-ft). For an 8" chuck part in steel, the SL25 figures are the more useful ones. The draw tube bore is 52 mm (2 in).
Turret indexing is fast at 0.35 s. OD tools are 20 mm (0.79 in) and boring bars 32 mm (1.26 in). The tailstock is an option on this model: 410 mm (16.1 in) of travel, a 100 mm (3.9 in) quill and an MT4 taper, all marked OPT in the table.
Several rows of the maker's SL25 column are not shown on this page because their metric and inch figures disagree: X travel, Z travel and machine weight. Dimensions are listed as 2,450 x 1,500 mm (97 x 59 in). Power requirement is 25 kVA, and the coolant tank holds 160 L (42 gal).
Full Specifications
| Parameter | Value |
|---|---|
| CNC Control | AKIRA Mi:845 (Fanuc G code compatible) |
| Axes Configuration | X+Z |
| Swing Over Bed | 530 mm (20.9 in) |
| Swing Over Cross Slide | 350 mm (13.8 in) |
| Max Turning Diameter | 350 mm (13.8 in) |
| Max Turning Length | 400 mm (15.7 in) |
| Chuck Size | 8" |
| Draw Tube Bore | 52 mm (2 in) |
| Max Spindle Speed | 5,000 rpm |
| Spindle Motor Power | 17 HP (12.7 kW) |
| Spindle Torque | 202 Nm (149 lb-ft) |
| Spindle Nose | A2-6 |
| Rapid Traverse Xz | 36 m/min (1,417 ipm) |
| Cutting Feed Rate | 10 m/min (394 ipm) |
| Turret Stations | 12 |
| OD Tool Size | 20 mm (0.79 in) |
| Boring Bar Shank | 32 mm (1.26 in) |
| Turret Index Time | 0.35 s |
| Quill Travel | 100 mm (3.9 in) (OPT) |
| Tailstock Travel | 410 mm (16.1 in) (OPT) |
| Quill Taper | MT4 (OPT) |
| Coolant Tank Capacity | 160 L (42 gal) |
| Chip Disposal | Drawer (STD); Conveyor (OPT) |
| Power Requirement | 25 kVA |
| Machine Dimensions | 2,450 x 1,500 mm (97 x 59 in) |
Specifications sourced from akiraseiki.com — verified 2026-10-04
Strengths & Limitations
Strengths
- 202 Nm (149 lb-ft) of peak torque on an 8" chuck machine
- 12-station turret with a 0.35 s index time
- 52 mm (2 in) draw tube bore
- Compact at 2,450 x 1,500 mm (97 x 59 in)
Limitations
- The tailstock is optional
- 17 HP (12.7 kW) peak, less than the 24 HP (17.9 kW) of the SL20
- X travel, Z travel and weight could not be taken from the maker's page
- Top speed of 5,000 rpm, below the 6,000 rpm of the SL20
Best For
Frequently Asked Questions
01
Maximum cutting diameter is 350 mm (13.8 in) and maximum cutting length 400 mm (15.7 in), with a 530 mm (20.9 in) swing over the bed and 350 mm (13.8 in) over the cross slide.
02
No. The tailstock rows are marked as options: 410 mm (16.1 in) (OPT) of tailstock travel, 100 mm (3.9 in) (OPT) of quill travel and an MT4 (OPT) quill taper.
03
5,000 rpm maximum speed, 17 HP (12.7 kW) peak power and 202 Nm (149 lb-ft) peak torque, on an A2-6 spindle nose with an 8" chuck and a 52 mm (2 in) bore.
04
Yes, the SL25MC, which adds a C axis and power tooling at 5,000 rpm with 3.7 kW (5.5 HP) and has a maximum cutting diameter of 280 mm (11 in). The SL25 itself is a two-axis X+Z lathe.
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