Akira Seiki SL20
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 SL20 cost?
Price estimate
We do not have a price for the Akira Seiki SL20 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
A 6" chuck, a tailstock and 350 mm (13.8 in) of Z travel define the Akira Seiki SL20, the small general-purpose lathe of the SL two-axis line. Maximum cutting diameter is 290 mm (11.4 in), maximum cutting length 330 mm (13 in), and the draw tube bore is 45 mm (1.8 in).
The spindle is quick and fairly strong for the size: 6,000 rpm, 24 HP (17.9 kW) and 137 Nm (101 lb-ft) at peak, on an A2-5 nose. Rapid feed is 36 m/min (1,417 ipm) in X and Z. The 10-station turret indexes in 0.5 s and takes 20 mm (0.79 in) OD tools and 25 mm (0.98 in) boring bars.
Unlike the SL15, this model lists a tailstock as part of the machine, with 210 mm (8.3 in) of travel, an 80 mm (3.1 in) quill stroke and an MT3 taper. That widens the work from chucked slugs and bar ends to shafts and pins that need a centre.
At 2,600 kg (5,732 lb) and 22 kVA, the SL20 is an easy machine to place. A chip drawer is standard and a conveyor is optional; the coolant tank holds 120 L (32 gal). The maker's dimension row for this model has metric and inch figures that disagree, so no footprint is shown here. Control is the AKIRA Mi:845 (Fanuc G code compatible).
Full Specifications
| Parameter | Value |
|---|---|
| CNC Control | AKIRA Mi:845 (Fanuc G code compatible) |
| Axes Configuration | X+Z |
| Swing Over Bed | 450 mm (17.7 in) |
| Swing Over Cross Slide | 290 mm (11.4 in) |
| Max Turning Diameter | 290 mm (11.4 in) |
| Max Turning Length | 330 mm (13 in) |
| Chuck Size | 6" |
| Draw Tube Bore | 45 mm (1.8 in) |
| Max Spindle Speed | 6,000 rpm |
| Spindle Motor Power | 24 HP (17.9 kW) |
| Spindle Torque | 137 Nm (101 lb-ft) |
| Spindle Nose | A2-5 |
| X Axis Travel | 150 + 15 mm (5.9 + 0.59 in) |
| Z Axis Travel | 350 mm (13.8 in) |
| Rapid Traverse Xz | 36 m/min (1,417 ipm) |
| Cutting Feed Rate | 10 m/min (394 ipm) |
| Turret Stations | 10 |
| OD Tool Size | 20 mm (0.79 in) |
| Boring Bar Shank | 25 mm (0.98 in) |
| Turret Index Time | 0.5 s |
| Quill Travel | 80 mm (3.1 in) |
| Tailstock Travel | 210 mm (8.3 in) |
| Quill Taper | MT3 |
| Coolant Tank Capacity | 120 L (32 gal) |
| Chip Disposal | Drawer (STD); Conveyor (OPT) |
| Power Requirement | 22 kVA |
| Machine Weight | 2,600 kg (5,732 lb) |
Specifications sourced from akiraseiki.com — verified 2026-10-04
Strengths & Limitations
Strengths
- Tailstock included, with an MT3 quill and 210 mm (8.3 in) of travel
- 6,000 rpm with 24 HP (17.9 kW) and 137 Nm (101 lb-ft) at peak
- 350 mm (13.8 in) of Z travel and a 330 mm (13 in) cutting length
- 10-station turret with a 0.5 s index
Limitations
- 45 mm (1.8 in) draw tube bore limits bar work
- 6" chuck only; no larger chuck is listed
- No footprint figure could be taken from the maker's page
- Two-axis machine without live tooling
Best For
Frequently Asked Questions
01
A 6" chuck, with a 45 mm (1.8 in) draw tube bore and an A2-5 spindle nose. Maximum cutting diameter is 290 mm (11.4 in) and swing over the bed 450 mm (17.7 in).
02
Yes. The table lists a tailstock travel of 210 mm (8.3 in), a quill travel of 80 mm (3.1 in) and an MT3 quill taper, without marking them as options.
03
The SL25 is larger and slower-turning: an 8" chuck, a 52 mm (2 in) bore, 5,000 rpm and 202 Nm (149 lb-ft), with a 12-station turret. Its tailstock is listed as an option. The SL20 keeps 6,000 rpm and 24 HP (17.9 kW).
04
The power requirement is 22 kVA. Machine weight is 2,600 kg (5,732 lb), and the coolant tank holds 120 L (32 gal) with a chip drawer as standard.
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