Akira Seiki SR55 XP
Key Specifications
Max Spindle
Spindle Taper
Tool Capacity
Table Size
Spindle Power
Accuracy
How much does the Akira Seiki SR55 XP cost?
Price estimate
We do not have a price for the Akira Seiki SR55 XP 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
At the top of the SR range, the Akira Seiki SR55 XP pairs the longest X travel, 1,350 mm (53 in), with the wide 640 mm (25 in) Y and 660 mm (26 in) Z of the bigger casting. Its 1,500 x 600 mm (59 x 23.6 in) table is rated for 1,500 kg (3,307 lb) as a standard load and 1,800 kg (3,968 lb) at most, the highest figures in the family.
So this is the SR machine for large plates and heavy fixtures. What it is not is a heavy-cutting machine. The spindle is the same BT40 unit found on the SR32 XP: 11,000 rpm and 18 HP (13.4 kW) peak. A buyer who needs to hog steel on parts this size should look at how the load is spread across lighter cuts, or at a larger-taper machine.
Tooling limits are 80 mm (3.2 in) in diameter with all 24T pockets filled, 150 mm (5.9 in) with neighbours removed, 250 mm (9.8 in) in length and 7 kg (15 lb). The tool change is 2.2 s. Rapids are 30 / 30 / 25 m/min (1,181 / 1,181 / 984 ipm).
Installation data: 3,870 x 2,495 mm (154 x 98 in), 30 kVA, 0.5 MPa (72.5 psi) air, and a 400 L (105.7 gal) coolant tank with chip screw.
Full Specifications
| Parameter | Value |
|---|---|
| CNC Control | AKIRA Mi:845 (Fanuc G code compatible) |
| X Axis Travel | 1,350 mm (53 in) |
| Y Axis Travel | 640 mm (25 in) |
| Z Axis Travel | 660 mm (26 in) |
| Distance Spindle Nose to Table | 100~760 mm (4~30 in) |
| Spindle Center to Column Cover | 640 mm (25 in) |
| Table Size | 1,500 x 600 mm (59 x 23.6 in) |
| T-Slots | 18 mm x 100 mm pitch x 5 slots |
| Max Table Load | 1,800 kg (3,968 lb) |
| Standard Table Load | 1,500 kg (3,307 lb) |
| Spindle Motor Power | 18 HP (13.4 kW) |
| Max Spindle Speed | 11,000 rpm |
| Spindle Taper | BT40 |
| Rapid Traverse Xyz | 30 / 30 / 25 m/min (1,181 / 1,181 / 984 ipm) |
| Cutting Feed Rate | 12 / 12 / 10 m/min (472 / 472 / 394 ipm) |
| Positioning Accuracy | 0.01 mm (0.00039 in) |
| Repeatability | ±0.003 mm (±0.00012 in) |
| Tool Capacity | 24T |
| Max Tool Diameter (full magazine) | 80 mm (3.2 in) |
| Max Tool Diameter Without Adjacent Tools | 150 mm (5.9 in) |
| Max Tool Length | 250 mm (9.8 in) |
| Max Tool Weight | 7 kg (15 lb) |
| Tool Change Time | 2.2 s |
| Coolant Tank Capacity | 400 L (105.7 gal) |
| Chip Disposal | Chip Screw |
| Air Pressure Requirement | 0.5 MPa (72.5 psi) |
| Power Requirement | 30 kVA |
| Machine Dimensions | 3,870 x 2,495 mm (154 x 98 in) |
Specifications sourced from akiraseiki.com — verified 2026-10-04
Strengths & Limitations
Strengths
- Largest SR envelope: 1,350 mm (53 in) x 640 mm (25 in) x 660 mm (26 in)
- Table rated to 1,800 kg (3,968 lb) maximum
- 1,500 x 600 mm (59 x 23.6 in) table with 18 mm T-slots at 100 mm pitch
- 400 L (105.7 gal) coolant tank
Limitations
- 18 HP (13.4 kW) peak is the same spindle power as the much smaller SR32 XP
- BT40 only; no larger taper is listed
- Occupies 3,870 x 2,495 mm (154 x 98 in)
- Tool weight limit of 7 kg (15 lb) rules out large face mills and long boring bars
Best For
Frequently Asked Questions
01
Travels are 1,350 mm (53 in) in X, 640 mm (25 in) in Y and 660 mm (26 in) in Z. The table is 1,500 x 600 mm (59 x 23.6 in), and the machine takes up 3,870 x 2,495 mm (154 x 98 in) of floor.
02
1,500 kg (3,307 lb) as the standard loading and 1,800 kg (3,968 lb) as the maximum. That is the highest table rating among the SR models; the SR45 XP, on the same Y and Z travels, is rated 1,560 kg (3,440 lb) maximum.
03
04
The AKIRA Mi:845, which the maker describes as Fanuc G code compatible. Positioning accuracy is listed at 0.01 mm (0.00039 in) and repeatability at ±0.003 mm (±0.00012 in).
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