Biglia B750Y
Image: bigliaspa.it, Biglia
Key Specifications
Max Spindle
Spindle Power
Max Turn Length
bar capacity
max turning diameter
swing over diameter
How much does the Biglia B750Y cost?
Price estimate
We do not have a price for the Biglia B750Y 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
The Biglia B750Y is the Y-axis version of the B750 that keeps its tailstock. It gives the turret 140 mm (5.5 in) of Y travel on top of 305 mm of X and 860 mm of Z, with driven tools, a C-axis on the main spindle and the servo B-axis tailstock for long work.
Y travel changes what the live tools can do. A flat can be milled straight across instead of being approximated with C-axis moves, a keyway can be cut to width with a smaller cutter, and holes can be drilled off the centreline. The Y-axis is not a fast axis, though: its rapid is 7.5 m/min, against 18 m/min on X and 24 m/min on Z, so programs with many small Y repositioning moves will show it in the cycle time.
Diameter needs a careful read on this machine. Biglia prints the swing over diameter as 680/500 mm and the suggested machining diameter for the 70 mm bar spindle as 552/350 mm, without saying in the table what separates the two values of each pair. Check large-diameter parts against the brochure's machining-field drawings before assuming the full envelope.
Live tooling is rated 12/15 kW and 35/37 Nm, with 6,000 rpm as the limit for standard rotary tools. The tailstock positions over 910 mm at 15 m/min. Three main spindles are offered, up to 93/100 mm bar and 800-1,014 Nm, and the machine weighs 7,450 kg with swarf conveyor.
Full Specifications
| Parameter | Value |
|---|---|
| Bar Capacity | ASA 6" Ø70: 70 mm (2.8 in); ASA 8" Ø80: 80 mm (3.1 in); ASA 8" Ø93/100: 93/100 mm (3.7/3.9 in) |
| Max Turning Diameter | ASA 6" Ø70: 552/350 mm (21.7/13.8 in); ASA 8" Ø80: 552/450 mm (21.7/17.7 in); ASA 8" Ø93/100: 552 mm (21.7 in) |
| Max Turning Length | 765 mm (30.1 in) with Ø 250 mm chuck |
| Swing Over Diameter | 680/500 mm (26.8/19.7 in) |
| Max Spindle Speed | ASA 6" Ø70: 4,500 rpm; ASA 8" Ø80: 3,200 rpm; ASA 8" Ø93/100: 3,000 rpm |
| Spindle Nose | ASA 6" (Ø70 bar spindle) / ASA 8" (Ø80 and Ø93/100 bar spindles) |
| Spindle Bore | ASA 6" Ø70: 77.5 mm (3.1 in); ASA 8" Ø80: 91 mm (3.6 in); ASA 8" Ø93/100: 106/111 mm (4.2/4.4 in) |
| Spindle Bearing Inside Diameter | ASA 6" Ø70: 110 mm (4.3 in); ASA 8" Ø80: 130 mm (5.1 in); ASA 8" Ø93/100: 150 mm (5.9 in) |
| Chuck Size | ASA 6" Ø70: 250 mm (9.8 in); ASA 8" Ø80: 315 mm (12.4 in); ASA 8" Ø93/100: 400 mm (15.7 in) |
| Spindle Motor Power | ASA 6" Ø70: 30-40 kW (40.2-53.6 hp) (S1-S3); ASA 8" Ø80: 15-22 kW (20.1-29.5 hp) (S1-S3); ASA 8" Ø93/100: 30-38 kW (40.2-51.0 hp) (S1-S3) |
| Spindle Torque | ASA 6" Ø70: 286 Nm (211 lb-ft) (S1-S3); ASA 8" Ø80: 398-700 Nm (294-516 lb-ft) (S1-S3); ASA 8" Ø93/100: 800-1,014 Nm (590-748 lb-ft) (S1-S3) |
| Turret Stations | 16/12 |
| Tool Shank OD Turning | 25x25 mm (1.0x1.0 in) |
| Tool Shank ID Turning | 32-40 / 40-50 mm (1.3-1.6 / 1.6-2.0 in) |
| Turret Indexing Time | 0.3 sec (1 position) |
| Live Tool Stations | 16/12 |
| Live Tool Speed | 6,000 / (10,000) rpm |
| Live Tool Power | 12/15 kW (16.1/20.1 hp) |
| Live Tool Torque | 35/37 Nm (26/27 lb-ft) |
| C Axis Min Programmable Value | 0.001° |
| C Axis Rapid Traverse | 100 rpm |
| X Axis Travel | 305 mm (12.0 in) |
| Y Axis Travel | 140 mm (5.5 in) |
| Z Axis Travel | 860 mm (33.9 in) |
| Rapid Traverse X | 18 m/min (709 ipm) |
| Rapid Traverse Y | 7.5 m/min (295 ipm) |
| Rapid Traverse Z | 24 m/min (945 ipm) |
| B Axis Tailstock Morse Taper | MT 4-5 |
| B Axis Tailstock Positioning Travel | 910 mm (35.8 in) |
| B Axis Tailstock Rapid Traverse | 15 m/min (591 ipm) |
| Coolant Tank Capacity | 300 L (79.3 gal) |
| Coolant Pump Flow | 60 L/min (15.9 gpm) |
| Coolant Pump Motor | 1.1 kW (1.5 hp) |
| Machine Dimensions | 528 x 203 x 248 cm (207.9 x 79.9 x 97.6 in), with swarf conveyor (last figure is the height) |
| Spindle Centre Height | 1,065 mm (41.9 in) |
| Machine Weight | 7,450 kg (16,424 lb) with swarf conveyor |
| CNC Control | FANUC i-HMI |
Specifications sourced from bigliaspa.it — verified 2026-10-05
Strengths & Limitations
Strengths
- 140 mm (5.5 in) of Y travel for off-centre drilling and true flat milling
- Keeps the CNC B-axis tailstock: 910 mm of positioning, MT 4-5
- Driven tools at 16 or 12 stations, 12/15 kW and 35/37 Nm
- Main spindles from 4,500 rpm and 30-40 kW up to 800-1,014 Nm at 3,000 rpm
- Machining length of 765 mm with a Ø 250 mm chuck
Limitations
- Y rapid is 7.5 m/min, less than half the 18 m/min of the X-axis
- No sub-spindle; the back of the part needs another setup or the B750YS
- Swing and suggested machining diameter are printed as unexplained pairs (680/500 mm, 552/350 mm), so the usable diameter has to be confirmed
- Standard rotary tools cap live tool speed at 6,000 rpm
Best For
Frequently Asked Questions
01
Biglia's table gives a Y-axis stroke of 140 mm with a rapid traverse of 7.5 m/min. X stroke is 305 mm at 18 m/min and Z stroke 860 mm at 24 m/min. The table does not split the Y stroke into plus and minus, so take the distribution about centre from the machining-field drawing.
02
Yes. The brochure lists the B750Y with rotary tools, C-axis, Y-axis and CNC automatic tailstock. The tailstock is the servo-driven B-axis type with 910 mm of automatic positioning, a 15 m/min rapid and Morse taper 4-5. Position and thrust are CNC-controlled.
03
Both have driven tools, a C-axis and the tailstock. The B750M mills with X, Z and C only. The B750Y adds 140 mm of Y travel, which is what off-centre holes and flat surfaces need. Biglia lists the B750Y at 7,450 kg and the B750M at 7,350 kg with swarf conveyor.
04
The table prints swing over diameter as 680/500 mm and the suggested machining diameter as 552/350 mm, 552/450 mm or 552 mm depending on the spindle. The table itself does not explain the pairs. The brochure's machining-field drawings show the turret and tool clearances in more detail, so ask Biglia to confirm the diameter available for your part and tooling.
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