![[Translate to English:] SR-20R IV](/fileadmin/_processed_/4/d/csm_star_sr20r_iv_99ce8c9897.png)
![[Translate to English:] Kinematik der SR-20R IV](/fileadmin/_processed_/3/d/csm_star_se20r_iv_kinematik_d4bbb5e26c.png)
SR-20R IV
type A/B
| Diameter | 20 mm / 23 mm (option) |
|---|---|
| Headstock stroke | 205 mm / 50 mm (fixed headstock lathe) |
| Machining possibilities |  |
Kinematics & tools
- 7-station tool holder on the tool post
- 4-station drilling unit including sleeves on the front and rear side
- 5 + α power-driven tools for cross machining on tool post
- B axis with angular positioning on the tool post with 3 power-driven tools (front and rear side) (type A)
- B axis programmable on the tool post with 3 power-driven tools (front and rear side) (type B)
- 2 deep hole drilling stations
- 8 + α power-driven tools including sleeves for backworking
- 8 axes (type A) / 9 axes (type B)
SR
20R IV
type A/B
The advantages
SR-20R IV
The SR-20R IV CNC automatic lathe is the latest development of the tested and proven "SR-20" series.
In addition to the innovative performance characteristics of the SR-20R III, the SR-20R IV has an additional B axis and a Y axis on the rear side. 8 backworking tools offer more possibilities for overlapped machining.
![[Translate to English:] SR-20R IV](/fileadmin/_processed_/e/2/csm_star_sr20r_iv_vorteile_ff08d7e911.png)
Advantages
- FANUC 32i-B control system with handle (type A)
- FANUC 31i-B5 control system with handle (type B)
- C axis control as standard on main and sub spindle
- fully independent backworking with 8 stations
- convertible from sliding headstock to fixed headstock lathe
- movable control panel
- 2 additional deep hole drilling stations
- B axis for main and sub spindle on the tool post (type A)
- B axis programmable for main and sub spindle on the tool post (type B)
Specifications
| General information | SR-20RIV type A | SR-20RIV type B |
|---|---|---|
| Number of axes | 8 | 9 |
| Max. rapid traverse speed | 35 m/min | 35 m/min |
| Weight | approx. 2,600 kg | approx. 2,600 kg |
| Coolant tank capacity | 170 litres | 170 litres |
| Dimensions (L x W x H) | approx. 2,334 x 1,200 x 1,700 mm | approx. 2,334 x 1,200 x 1,700 mm |
| Main spindle side | SR-20R IV type A | SR-20R IV type B |
|---|---|---|
| Number of axes | 4 | 5 |
| Axes main spindle (headstock) | Z1 / C1 | Z1 / C1 |
| Axes tool post | X1 / Y1 | X1 / Y1 / B |
| B axis on tool post | manual | freely programmable |
| Max. machining diameter | 20 mm / 23 mm (option) | 20 mm / 23 mm (option) |
| Max. headstock stroke (sliding/fixed headstock) | 205 mm / 50 mm | 205 mm / 50 mm |
| Max. main spindle drive power | 3.7 kW | 3.7 kW |
| Max. main spindle speed | 10,000 1/min | 10,000 1/min |
| Tools on the tool post | ||
| Turning tools | 7 tools (□ 12 mm) | 7 tools (□ 12 mm) |
| Drilling tools (4-spindle drilling unit) | 4 tools (ER16) | 4 tools (ER16) |
| Cross machining tools | 5 tools (ER16) | 5 tools (ER16) |
| Cross machining tools on the B axis |
3 tools (ER16) front side 3 tools (ER11) rear side |
3 tools (ER16) front side 3 tools (ER11) rear side |
| Max. cross machining drive power | 2.2 kW | 2.2 kW |
| Max. cross machining speed | 8,000 rpm | 8,000 rpm |
| Front drilling unit tools | ||
| No. of tools (for deep drilling) | 2 tools | 2 tools |
| Sleeve | Ø 22 mm | Ø 22 mm |
| Max. drilling depth | 115 m | 115 m |
| Sub spindle side | SR-20R IV type A | SR-20R IV type B |
|---|---|---|
| Number of axes | 4 | 4 |
| Axes sub spindle | X2 / Z2 / C2 | X2 / Z2 / C2 |
| Vertical axis for backworking | Y2 | Y2 |
| Max. chucking diameter | 20 mm / 23 mm (option) | 20 mm / 23 mm (option) |
| Max. sub spindle drive power | 3.7 kW | 3.7 kW |
| Max. sub spindle speed | 10,000 rpm | 10,000 rpm |
| Backworking tools | ||
| Tool stations | 8 units (8 power-driven) | 8 units (8 power-driven) |
| Max. backworking speed | 8,000 rpm | 8,000 rpm |
Standard scope of delivery
- FANUC 32i-B control system with handle (type A)
- FANUC 31i-B5 control system with handle (type B)
- C axis control as standard on main and sub spindle
- synchronously driven guide bush unit
- convertible from sliding headstock to fixed headstock lathe
- 7-station tool holder on the tool post
- 5 + α power-driven tools for cross machining on tool post
- B axis with angular positioning on the tool post with 3 power-driven tools (front and rear side) (type A)
- B axis programmable on the tool post with 3 power-driven tools (front and rear side) (type B)
- 4-station drilling unit including sleeves on the front and rear side
- 2 deep hole drilling stations
- 8 + α power-driven tools including sleeves for backworking
- broken cut-off tool detector
- parts ejection detector
- sub spindle for backworking
- sub spindle air blow unit
- parts receptacle
- pneumatic unit with maintenance unit
- sub spindle parts ejection detector
- parts conveyor to remove the parts
- oil lubrication system
- separate coolant tank with level monitoring and coolant flow detector
- bar feeder interface
- levelling pads and adjustment screws
- worklight
- toolbox with special tools
- metric input
- tool nose radius compensation
- constant cutting speed for main and sub spindle
- multiple canned cycles
- operating hours display
- parts counter
- automatic power supply cut-off function
- interfaces to input and read data
- program sequence controllable with handle
- cylindrical interpolation
- polar coordinate interpolation
- polygon machining
- helical interpolation
- 3D coordinate conversion mode
- bar feeding: bar feeder
- chip disposal: chip conveyor
- long parts ejector
- beacon: acc. to customer requirements
- high pressure unit: 50 to 300 bar
- fire protection: small fire extinguishing system
- complete filtration coolant
- Tools in the internet at www.star-tools.eu
Machining examples
Selection from our
range of tools
![[Translate to English:] 331-50](/fileadmin/_processed_/3/1/csm_star_331_50_ea311eff73.png)
![[Translate to English:] OT1-91](/fileadmin/_processed_/2/0/csm_star_OT1_91_6be7290be0.png)
![[Translate to English:] 541-54](/fileadmin/_processed_/f/a/csm_star_541_54_142846f773.png)
![[Translate to English:] 681-72](/fileadmin/_processed_/3/c/csm_star_681_72_4f0c9b6828.png)
![[Translate to English:] 101-61](/fileadmin/_processed_/5/2/csm_star_OR1_61_31bd5da207.png)
Your advantages
with star Micronics
- Training
STAR Micronics GmbH offers special training sessions for machine operators. You as customer can decide whether to have the training in our company or on your premises. The training is naturally exclusively for your personnel and specifically designed for your range of parts. - High pressure unit
The machine can be retrofitted with high pressure units from 50 to 300 bar. In addition, other developments are available to you, such as programmable pressure control or complete filtration. - Cooling lubricants
The machine can be run with oil or with aqueous emulsions. However, we recommend the use of oil as this is far more beneficial to the longevity of the machine. - Bar feeder
All commonly available bar feeders (FMB/IEMCA/LNS) can be used with the machine. The software interface is included in the machine as standard.
- Chip conveyor
The machine can be fitted with a chip conveyor or a chip flushing system. - Peripherals
Peripheral components such as parts separators, purchased coolant units (oil/emulsion), coolant filters, fire protection systems and TPM (tool process monitoring) can also be offered. A retrofit of peripheral components is always possible. - Service
SSC star* Service Connect as 24/7 customer portal and online connectivity for your machines, tickets and service calls. A current overview can be called up at any time. In addition, you have access to the star* knowledge database
Müller Products can easily be combined with and configured to your star* machine.
REQUEST quotation NOW
You will receive a quotation for a star* SR-20R IV with a standard configuration.
Download
SR-20R IV brochure
HFT Flyer
