Star Micronics SA-20R Multi-Spindle Automatic
Key Specifications
number of spindles
max bar diameter
max spindle speed
spindle motor power
bar feed capacity
cross slides
How much does the Star Micronics SA-20R Multi-Spindle Automatic cost?
Estimated price range
Our best estimate for a multi-spindle automatic in this class — not a quote from Star Micronics. Configuration moves it a long way.
Overview
The Star Micronics SA-20R Multi-Spindle Automatic is listed as a six-spindle bar machine for stock up to 20 mm, with a maximum spindle speed of 7,500 rpm and 18 kW of spindle motor power installed in total. The figures here are the listed ones and have not been confirmed against a Star page, so check them against the machine's own documentation before quoting work on them.
The layout in the table is 6 cross slides, one per position, plus an end-working unit. Each position can take one radial cut while the end-working unit drills or bores the bar end, and a part is finished by passing through the positions in turn instead of waiting for one tool post to do everything in sequence. The 18 kW figure is a total. It should not be read as the power available at any single spindle.
At approximately 11,500 kg this is a heavy machine for 20 mm work, and the rigging route and floor loading need checking before one is moved. The table calls it compatible with a front-loaded magazine bar feeder; it does not say a feeder is included. Control is listed as a FANUC CNC in a Star Micronics multi-spindle configuration.
Full Specifications
| Parameter | Value |
|---|---|
| Number of Spindles | 6 |
| Max Bar Diameter | 20 mm |
| Max Spindle Speed | 7,500 rpm |
| Spindle Motor Power | 18 kW (total installed) |
| Bar Feed Capacity | Front-loaded magazine bar feeder compatible |
| Cross Slides | 6 cross slides (one per position) + end-working unit |
| Control System | FANUC CNC (Star Micronics multi-spindle configuration) |
| Machine Weight | Approx. 11,500 kg |
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
- Six spindles with 6 cross slides, one per position, plus an end-working unit, so several cuts run at the same time
- Listed maximum spindle speed of 7,500 rpm on bar up to 20 mm
- Listed as compatible with a front-loaded magazine bar feeder
Limitations
- The 18 kW spindle motor power is a total installed figure; the table gives no rating per spindle
- Approx. 11,500 kg, so rigging and floor loading need planning
- Bar diameter is capped at 20 mm, and no part length, stroke or rapid figures are listed
Best For
Frequently Asked Questions
01
The listed figure is 6 spindles, served by 6 cross slides (one per position) and an end-working unit. Maximum bar diameter is 20 mm and maximum spindle speed is 7,500 rpm. These are listed figures that have not been confirmed against a Star page.
02
No, the table gives 18 kW as the total installed spindle motor power. It does not break that down by spindle, so the power available at one position cannot be taken from this figure. Ask for the per-spindle rating if a single heavy cut decides whether the job fits.
03
Weight first: the listed figure is approx. 11,500 kg, which calls for a planned rigging route and a floor rated for the load. The table describes the machine as compatible with a front-loaded magazine bar feeder but does not state that one is supplied, so confirm what bar loading equipment comes with a particular machine.
