Biglia B1250
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 B1250 cost?
Price estimate
We do not have a price for the Biglia B1250 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
Long shafts are the job of the Biglia B1250, the long-bed member of the B750/B1250 series in its plain two-axis form. Z travel is 1,310 mm (51.6 in) and the maximum machining length 1,195 mm (47.0 in) with a Ø 315 mm chuck, on the same 305 mm X travel as the shorter B750.
Only ASA 8" spindles are listed for this bed. The larger one takes 93/100 mm bar through a 106/111 mm bore, runs at 3,000 rpm and is rated 30-38 kW with 800-1,014 Nm, carrying a 400 mm chuck. The table marks the smaller one, for 80 mm bar at 3,200 rpm with 15-22 kW and 398-700 Nm, as a spindle option. Both sets of figures are S1-S3 ratings. There is no 4,500 rpm spindle here as there is on the B750, which says something about the intended work: big, slow, heavy cuts on bar and forgings, not small fast parts.
The tailstock differs from the B750 as well. Standard on the B1250 is a tailstock with a 115 mm hydraulic quill and 150 mm of quill stroke, taking an MT 5 centre. It has no drive of its own: the turret carriage tows it into place along the Z-axis, over 1,310 mm. The servo B-axis tailstock is an option on this model, listed with 1,140 mm of positioning at 15 m/min. An automatic steady-rest for shafts up to 240 mm in diameter is offered on the B1250 only.
This base version has no driven tools. With swarf conveyor it weighs 7,850 kg and measures 562 x 219 cm, 249 cm high.
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) |
| X Axis Travel | 305 mm (12.0 in) |
| Z Axis Travel | 1,310 mm (51.6 in) |
| Rapid Traverse X | 18 m/min (709 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 | 7,850 kg (17,306 lb) with swarf conveyor |
| CNC Control | FANUC i-HMI |
Specifications sourced from bigliaspa.it — verified 2026-10-05
Strengths & Limitations
Strengths
- 1,310 mm (51.6 in) of Z travel and 1,195 mm (47.0 in) of machining length with a Ø 315 mm chuck
- Main spindle with 800-1,014 Nm and 30-38 kW for 93/100 mm bar
- Tailstock with a 115 mm hydraulic quill and 150 mm stroke as the standard arrangement
- Optional automatic steady-rest for shafts up to 240 mm in diameter, offered on the B1250 only
- Optional servo B-axis tailstock with 1,140 mm of positioning
Limitations
- Top spindle speed is 3,000 rpm, or 3,200 rpm with the optional 80 mm bar spindle
- No driven tools, C-axis or Y-axis on this version
- The standard tailstock is positioned by the turret carriage, so moving it occupies the Z-axis
- At 562 cm long it needs more floor than the 528 cm B750
Best For
Frequently Asked Questions
01
Biglia gives a maximum machining length of 1,195 mm, with a footnote that the figure applies with a Ø 315 mm chuck. Z-axis stroke is 1,310 mm and X-axis stroke 305 mm. The brochure describes the machine as particularly suitable for long shafts.
02
Two types are listed. The standard one has a hydraulic quill of 115 mm diameter with a 150 mm stroke and an MT 5 taper, and is positioned by the turret-holding carriage along the Z-axis over 1,310 mm. A servo-driven B-axis tailstock, standard on the B750, is an option here, with 1,140 mm of positioning, a 15 m/min rapid and MT 5/4. A rotating tailstock built into the quill is also optional.
03
Both are ASA 8". The 93/100 mm bar spindle has a 106/111 mm bore, 150 mm bearing inside diameter, a 400 mm chuck, 3,000 rpm, 30-38 kW and 800-1,014 Nm. The 80 mm bar spindle, footnoted as a spindle option, has a 91 mm bore, a 315 mm chuck, 3,200 rpm, 15-22 kW and 398-700 Nm.
04
Yes, as an option that Biglia offers on the B1250 only. The brochure describes an automatic, self-centring steady-rest suitable for shafts up to 240 mm in diameter, with programmable positioning and opening and closing of the arms. It is available as a single or double unit.
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