Biglia B1250Y
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 B1250Y cost?
Price estimate
We do not have a price for the Biglia B1250Y 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
For shafts that need milling away from the centreline, Biglia builds the B1250Y: the long-bed lathe with a Y-axis, driven tools, a C-axis and a tailstock. Its three linear travels are 305 mm on X, 140 mm on Y and 1,310 mm on Z, and it turns parts up to 1,195 mm long with a Ø 315 mm chuck.
Consider a long drive shaft with a keyway at one end, a pair of wrench flats in the middle and an offset oil hole. The keyway could be cut on the B1250M, but the flats and the offset hole call for Y travel. On this machine all three are finished while the shaft is still held between chuck and centre, which keeps them in line with the turned diameters.
Holding that shaft is where the B1250 bed helps. The standard tailstock uses a 115 mm hydraulic quill with a 150 mm stroke and an MT 5 centre, and the table gives 1,310 mm of automatic positioning for it. A B-axis tailstock driven by its own servo, with 1,140 mm of positioning at 15 m/min, is the listed alternative. For slender work Biglia offers an automatic steady-rest on the B1250, good for shafts up to 240 mm in diameter.
The Y-axis rapid is 7.5 m/min, and live tools are rated 12/15 kW and 35/37 Nm. The main spindle is ASA 8" in both of its forms, with up to 800-1,014 Nm at 3,000 rpm. The machine weighs 8,100 kg with swarf conveyor.
Full Specifications
| Parameter | Value |
|---|---|
| Bar Capacity | ASA 8" Ø80 (spindle option): 80 mm (3.1 in); ASA 8" Ø93/100: 93/100 mm (3.7/3.9 in) |
| Max Turning Diameter | ASA 8" Ø80 (spindle option): 552/450 mm (21.7/17.7 in); ASA 8" Ø93/100: 552 mm (21.7 in) |
| Max Turning Length | 1,195 mm (47.0 in) with Ø 315 mm chuck |
| Swing Over Diameter | 680/500 mm (26.8/19.7 in) |
| Max Spindle Speed | ASA 8" Ø80 (spindle option): 3,200 rpm; ASA 8" Ø93/100: 3,000 rpm |
| Spindle Nose | ASA 8" for both main spindle options |
| Spindle Bore | ASA 8" Ø80 (spindle option): 91 mm (3.6 in); ASA 8" Ø93/100: 106/111 mm (4.2/4.4 in) |
| Spindle Bearing Inside Diameter | ASA 8" Ø80 (spindle option): 130 mm (5.1 in); ASA 8" Ø93/100: 150 mm (5.9 in) |
| Chuck Size | ASA 8" Ø80 (spindle option): 315 mm (12.4 in); ASA 8" Ø93/100: 400 mm (15.7 in) |
| Spindle Motor Power | ASA 8" Ø80 (spindle option): 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 8" Ø80 (spindle option): 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 | 1,310 mm (51.6 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) |
| Tailstock Quill Stroke | 150 mm (5.9 in) |
| Tailstock Quill Diameter | 115 mm (4.5 in) |
| Tailstock Morse Taper | MT 5 |
| Tailstock Positioning Travel | 1,310 mm (51.6 in) |
| B Axis Tailstock Morse Taper | MT 5/4 |
| B Axis Tailstock Positioning Travel | 1,140 mm (44.9 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 | 562 x 219 x 249 cm (221.3 x 86.2 x 98.0 in), with swarf conveyor (last figure is the height) |
| Spindle Centre Height | 1,065 mm (41.9 in) |
| Machine Weight | 8,100 kg (17,857 lb) with swarf conveyor |
| CNC Control | FANUC i-HMI |
Specifications sourced from bigliaspa.it — verified 2026-10-05
Strengths & Limitations
Strengths
- 140 mm of Y travel combined with 1,310 mm of Z travel
- Mills flats, keyways and off-centre holes on shafts up to 1,195 mm long without re-fixturing
- Quill tailstock as standard, B-axis servo tailstock with 1,140 mm of positioning as the alternative
- Automatic steady-rest option for shafts up to 240 mm in diameter
- Live tools at 16 or 12 turret stations with a 0.001° C-axis
Limitations
- Y rapid traverse is 7.5 m/min
- No sub-spindle; the chucked end needs a second setup
- Only ASA 8" main spindles, at 3,000 or 3,200 rpm
- Live tool torque is 35/37 Nm, so large-cutter milling on big shafts is slow
Best For
Frequently Asked Questions
01
The Y-axis stroke is 140 mm and its rapid traverse 7.5 m/min. X-axis stroke is 305 mm at 18 m/min and Z-axis stroke 1,310 mm at 24 m/min. The C-axis has a minimum programmable value of 0.001° and a maximum rapid of 100 rpm.
02
Bed length, spindles and tailstock. The B750Y has 860 mm of Z travel, a 765 mm machining length and a choice of three spindles including an ASA 6" unit at 4,500 rpm; its tailstock is the servo B-axis type. The B1250Y has 1,310 mm of Z travel, a 1,195 mm machining length, ASA 8" spindles only and a hydraulic-quill tailstock as standard.
03
The table has values in both tailstock sections. The quill tailstock: 150 mm automatic quill stroke, 115 mm quill diameter, MT 5 and 1,310 mm of automatic positioning by the turret carriage. The B-axis tailstock: MT 5/4, 1,140 mm of automatic positioning and a 15 m/min rapid. Biglia states that the B-axis type is an option on the B1250.
04
With swarf conveyor the machine is listed at 562 x 219 x 249 cm, the last figure being the height, and 8,100 kg. Spindle centre height is 1,065 mm. The coolant tank holds 300 L and the pump delivers 60 L/min.
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