Star ECAS-51
Key Specifications
Rapid Traverse
max bar capacity
max machining diameter
max machining length
main spindle speed
back spindle speed
How much does the Star ECAS-51 cost?
Estimated price range
Our best estimate for a swiss-type lathe in this class — not a quote from Star Micronics. Configuration moves it a long way.
Overview
The Star ECAS-51 is listed as a guide-bushing Swiss-type lathe at the large end of the bar range: 51 mm (2.008 in) maximum bar and machining diameter, 300 mm (11.81 in) maximum machining length, and a 6,500 RPM main spindle. The figures on this page come from a listing and not from Star, so treat them as listed figures to be confirmed against the machine's own documentation.
Six axes are listed: X1, Z1, X2, Z2, C1 and C2. That gives turning and C-axis positioning on both the main and the back spindle. No Y axis appears in the list, so milling and cross-drilling away from the centreline are not something this table supports. Tooling is gang style with live tool stations, 16 positions including the live tools, and the live tools and the back spindle both run to 5,000 RPM.
A 56 mm spindle bore sits behind the 51 mm bar capacity. Rapid traverse is 20 m/min, which matters little on stock this size because most of the cycle is spent cutting. The SH-51 shares the 56 mm bore and is listed with 7,000 RPM live tools, 22 m/min rapids and a weight of 4,200 kg (9,259 lb).
For installation, the listed weight is 3,600 kg (7,937 lb) and power consumption is 16 kVA. The control is a Fanuc 0i-TF.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Capacity | 51 mm (2.008 in) |
| Max Machining Diameter | 51 mm (2.008 in) |
| Max Machining Length | 300 mm (11.81 in) |
| Main Spindle Speed | 6,500 RPM |
| Back Spindle Speed | 5,000 RPM |
| Live Tool Speed | 5,000 RPM |
| Number of Axes | 6 (X1, Z1, X2, Z2, C1, C2) |
| Tooling Style | Gang tooling with live tool stations |
| Tool Positions | 16 (including live tools) |
| Guide Bushing | Yes |
| CNC Control | Fanuc 0i-TF |
| Rapid Traverse Rate | 20 m/min |
| Machine Weight | 3,600 kg (7,937 lb) |
| Power Consumption | 16 kVA |
| Spindle Bore | 56 mm |
Specifications compiled from manufacturer literature and industry references. Not independently verified against a published spec sheet — confirm with the manufacturer or an authorised dealer before making a purchasing decision.
Strengths & Limitations
Strengths
- 51 mm (2.008 in) bar capacity with a 56 mm spindle bore
- 300 mm (11.81 in) maximum machining length with a guide bushing
- C1 and C2 axes on the main and back spindles, with live tools running to 5,000 RPM
- 16 tool positions, including live tools, on gang tooling
Limitations
- No Y axis among the six listed axes: X1, Z1, X2, Z2, C1, C2
- Rapid traverse is 20 m/min; the SH-51 is listed at 22 m/min
- Live tools and back spindle are limited to 5,000 RPM, below the 6,500 RPM of the main spindle
- The figures are listed ones that have not been confirmed against a Star page
Best For
Frequently Asked Questions
01
The listed maximum bar capacity and machining diameter are both 51 mm (2.008 in), through a 56 mm spindle bore. Maximum machining length is 300 mm (11.81 in), and the machine is listed with a guide bushing.
02
Not according to the listed axes, which are X1, Z1, X2, Z2, C1 and C2, six in all. Cross work is therefore limited to what live tools and the two C axes can reach on the centreline. Parts with off-centre milled features need a closer look at the machine's actual configuration.
03
Both have a 56 mm spindle bore. The ECAS-51 is listed with 5,000 RPM live tools, 20 m/min rapid traverse, a weight of 3,600 kg (7,937 lb) and a Fanuc 0i-TF control. The SH-51 is listed with 7,000 RPM live tools, 22 m/min rapid traverse, a weight of 4,200 kg (9,259 lb) and a Fanuc 31i-B5 control.
04
The listed machine weight is 3,600 kg (7,937 lb) and power consumption is 16 kVA. Both are listed figures and should be checked against the nameplate of the machine in question before the floor and supply are prepared.
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