Biglia B750SM

Q: How much does the Biglia B750SM cost?

The price estimate for the Biglia B750SM is uncertain: we have no price for it that we can cite and no estimate we can stand behind, so we give no figure. Configuration, tooling, automation and installation move the final price substantially. A specific price can be requested at https://machinetoolindex.com/machines/biglia-b750sm#price; the request is passed to Biglia or an authorised dealer.

Specs verified 2026-10-05 · bigliaspa.it Updated 2026-10-05

Image: bigliaspa.it, Biglia

Key Specifications

Max Spindle

ASA 6" Ø70: 4,500 rpm; ASA 8" Ø80: 3,200 rpm; ASA 8" Ø93/100: 3,000 rpm

Spindle 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)

Max Turn Length

765 mm (30.1 in) with Ø 250 mm chuck

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)

swing over diameter

680/500 mm (26.8/19.7 in)

How much does the Biglia B750SM cost?

Price estimate

Uncertain

We do not have a price for the Biglia B750SM 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

A second spindle replaces the tailstock on the Biglia B750SM. The machine is the sub-spindle version of the B750 with driven tools and a C-axis on both spindles, built to finish both ends of a part without an operator turning it round.

The sub-spindle is a full-size unit. Biglia lists an ASA 6" nose, 77.5 mm bore, 70 mm drawtube inside diameter, 4,500 rpm, 30-40 kW and 286 Nm, with 210-250 mm chucks. Those figures match the ASA 6" main spindle, so with that main spindle the two ends of the job get equal power. Order one of the ASA 8" main spindles and the balance shifts: the 93/100 mm bar spindle delivers 800-1,014 Nm on the first side, while the second side stays at 286 Nm.

Pick-off is automatic. The sub-spindle travels on the B-axis with 895 mm of automatic positioning at 24 m/min, and the brochure describes the workpiece being transferred from the main to the sub-spindle so the whole process runs in one cycle. Because the B-axis is taken by the second spindle, the table shows no tailstock for this version, and long slender shafts are better served by the B750M.

Live tooling is rated 12/15 kW and 35/37 Nm at 16 or 12 turret stations, without a Y-axis. Travels are 305 mm on X and 860 mm on Z, and the listed weight is 7,500 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)
Sub Spindle Speed	4,500 rpm
Sub Spindle Nose	ASA 6"
Sub Spindle Bore	77.5 mm (3.1 in)
Sub Spindle Drawtube Inside Diameter	70 mm (2.8 in)
Sub Spindle Bearing Inside Diameter	110 mm (4.3 in)
Sub Spindle Chuck Size	210-250 mm (8.3-9.8 in)
Sub Spindle Power	30-40 kW (40.2-53.6 hp)
Sub Spindle Torque	286 Nm (211 lb-ft)
Sub Spindle B Axis Positioning Travel	895 mm (35.2 in)
Sub Spindle B Axis Rapid Traverse	24 m/min (945 ipm)
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)
Z Axis Travel	860 mm (33.9 in)
Rapid Traverse X	18 m/min (709 ipm)
Rapid Traverse Z	24 m/min (945 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	7,500 kg (16,534 lb) with swarf conveyor
CNC Control	FANUC i-HMI

Specifications sourced from bigliaspa.it — verified 2026-10-05

Strengths & Limitations

Strengths

Sub-spindle rated 30-40 kW and 286 Nm at 4,500 rpm, the same as the ASA 6" main spindle
70 mm drawtube inside diameter on the sub-spindle, so bar-size parts can be gripped from behind
895 mm of B-axis positioning at 24 m/min for part transfer
C-axis on both spindles with driven tools at every turret station
Kit for bar machining with automatic parts-catcher listed as an option for unattended bar work

Limitations

No tailstock: the B-axis tailstock rows are blank for this version
No Y-axis; off-centre milling needs the B750YS
One turret serves both spindles, so the two sides are machined one after the other
With an ASA 8" main spindle the sub-spindle has far less torque than the main

Best For

Chucked parts machined complete on both faces Bar parts up to 70 mm picked off and back-worked Flanged components needing drilling on front and back Batches where a manual second setup is the bottleneck

Frequently Asked Questions

01 How big is the sub-spindle on the B750SM?

It is an ASA 6" spindle with a 77.5 mm bore, a 70 mm drawtube inside diameter and bearings of 110 mm inside diameter. Maximum speed is 4,500 rpm, motor power 30-40 kW and maximum torque 286 Nm. Chuck diameter is given as 210-250 mm.

02 Does the B750SM have a tailstock?

Biglia's table shows no tailstock values for the B750SM. The B-axis carries the sub-spindle instead, with 895 mm of automatic positioning and a 24 m/min rapid. The B750, B750M and B750Y are the versions listed with the B-axis tailstock, which has 910 mm of positioning.

03 What is the difference between the B750SM and the B750YS?

The Y-axis. Both have the sub-spindle, driven tools and C-axis on each spindle. The B750YS adds 140 mm of Y travel with a rapid of 7.5 m/min and is listed at 7,600 kg; the B750SM has no Y travel and is listed at 7,500 kg.

04 Which main spindle suits the B750SM best?

That depends on the first operation. The ASA 6" main spindle (70 mm bar, 4,500 rpm, 30-40 kW, 286 Nm) mirrors the sub-spindle. The ASA 8" spindles give 398-700 Nm for 80 mm bar or 800-1,014 Nm for 93/100 mm bar, with 315 or 400 mm chucks, but run at 3,200 and 3,000 rpm. The sub-spindle stays the same in every case.