Biglia B620 ASA 8"
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 B620 ASA 8" cost?
Price estimate
We do not have a price for the Biglia B620 ASA 8" 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
Torque is the reason to pick the ASA 8" spindle on a Biglia B620. The table gives 398 - 700 Nm (294 - 516 lb-ft) at the main spindle, the highest of the three spindle sizes, together with the largest bar capacity in the range at 80 mm (3.1 in). Maximum speed is 3,200 rpm and motor power 15 - 22 kW (20.1 - 29.5 hp).
Read those two figures together. A 22 kW motor producing 700 Nm is a low-speed spindle: it is built to pull large-diameter cuts in tough material, not to finish small parts quickly. The B620 ASA 6" spindle has nearly twice the power rating at 30 - 40 kW and runs to 4,500 rpm, but lists 286 Nm. If most of the work is under 70 mm, that column is the better fit, and this one earns its place when bar between 70 and 80 mm or heavy interrupted cuts are routine.
The spindle itself is the biggest of the family, with a 91 mm bore and bearings of 130 mm inside diameter, carrying 210 / 250 mm chucks. Machining diameter is 360 mm and machining length 620 mm, as on the B620 ASA 6" machine, inside a 700 mm swing.
Biglia does not scale the rest of the lathe up with the spindle. The turret still has 15 stations and accepts 20x20 and 25x25 shanks and Ø32 mm boring bars, X travel is 180 mm, and the sub-spindle offered on the S, SM and YS versions remains the ASA 5" unit at 5,000 rpm and 108 - 159 Nm. Weight is 6,700 kg (14,771 lb) with swarf conveyor.
Full Specifications
| Parameter | Value |
|---|---|
| Bar Capacity | 80 mm (3.1 in) |
| Max Turning Diameter | 360 mm (14.2 in) |
| Max Turning Length | 620 mm (24.4 in) |
| Swing Over Diameter | 700 mm (27.6 in) |
| Max Spindle Speed | 3,200 rpm |
| Spindle Nose | ASA 8" |
| Spindle Bore | 91 mm (3.6 in) |
| Spindle Bearing Inside Diameter | 130 mm (5.1 in) |
| Chuck Size | 210 / 250 mm (8.3 / 9.8 in) |
| Spindle Motor Power | 15 - 22 kW (20.1 - 29.5 hp) |
| Spindle Torque | 398 - 700 Nm (294 - 516 lb-ft) |
| Sub Spindle Speed | 5,000 rpm |
| Sub Spindle Nose | ASA 5" |
| Sub Spindle Bore | 59.5 mm (2.3 in) |
| Sub Spindle Drawtube Inside Diameter | 50 mm (2.0 in) |
| Sub Spindle Bearing Inside Diameter | 90 mm (3.5 in) |
| Sub Spindle Chuck Size | 140 / 165 mm (5.5 / 6.5 in) |
| Sub Spindle Power | 17 - 25 kW (22.8 - 33.5 hp) |
| Sub Spindle Torque | 108 - 159 Nm (80 - 117 lb-ft) |
| Turret Stations | 15 |
| Tool Shank OD ID Turning | 20x20 - 25x25 - Ø32 mm (0.8x0.8 - 1.0x1.0 - Ø1.3 in) |
| Turret Indexing Time | 0.15 sec (1 position) |
| Live Tool Stations | 15 |
| Live Tool Speed | 6,000 - 10,000 rpm |
| Live Tool Power | 11 - 12.5 kW (14.8 - 16.8 hp) |
| Live Tool Torque | 30 - 34.5 Nm (22 - 25 lb-ft) |
| C Axis Min Programmable Value | 0.001° |
| C Axis Rapid Traverse | 100 rpm |
| X Axis Travel | 180 mm (7.1 in) |
| Z Axis Travel | 620 mm (24.4 in) |
| Y Axis Travel | +45 / -45 mm (+1.8 / -1.8 in) |
| B Axis Travel | 620 mm (24.4 in) |
| Rapid Traverse X | 18 m/min (709 ipm) |
| Rapid Traverse Z | 30 m/min (1,181 ipm) |
| Rapid Traverse Y | 18 m/min (709 ipm) |
| Rapid Traverse B | 30 m/min (1,181 ipm) |
| Tailstock Morse Taper | MT 5 and 4 |
| Tailstock B Axis Rapid Traverse | 18 m/min (709 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 | 455.1 x 206.5 x 204.2 cm (179.2 x 81.3 x 80.4 in), with swarf conveyor (last figure is the height) |
| Spindle Centre Height | 1,080 mm (42.5 in) |
| Machine Weight | 6,700 kg (14,771 lb) with swarf conveyor |
| CNC Control | FANUC i-HMI |
Specifications sourced from bigliaspa.it — verified 2026-10-05
Strengths & Limitations
Strengths
- 398 - 700 Nm (294 - 516 lb-ft) of main-spindle torque, the most in the B620 table
- 80 mm (3.1 in) bar capacity through a 91 mm spindle bore
- Main bearings of 130 mm inside diameter, against 110 mm on the B620 ASA 6" and 90 mm on the B620 ASA 5"
- Same 360 mm machining diameter and 620 mm length as the B620 ASA 6" machine, so the bigger spindle costs no envelope
- Optional polygon turning and a choice of two parts-catcher systems, per Biglia's brochure
Limitations
- Top speed of 3,200 rpm limits surface speed on small diameters and with small drills
- Motor power is 15 - 22 kW, below the 30 - 40 kW of the B620 ASA 6"
- The sub-spindle stays at ASA 5" with a 50 mm drawtube, so 80 mm bar parts cannot pass through it at full size
- Tool shanks are limited to 25x25 square and Ø32 mm for boring bars, modest for a spindle with this torque
Best For
Frequently Asked Questions
01
Biglia's table lists 15 - 22 kW and 398 - 700 Nm at 3,200 rpm for this spindle, and 30 - 40 kW and 286 Nm at 4,500 rpm for the B620 ASA 6". The ASA 8" motor is wound for torque at low speed. It delivers more twisting force for large diameters and gives up top speed and peak power in exchange.
02
The bar capacity row gives 80 mm (3.1 in), through a spindle bore of 91 mm. Biglia lists a parts catcher and a bar-feeder interface among the B620 standard features. If the part is to be transferred to the sub-spindle, remember that its drawtube inside diameter is 50 mm.
03
No. All three spindle sizes use the 15-station Biglia servo turret, indexing one position in 0.15 sec, with tool shanks of 20x20 and 25x25 square and Ø32 mm for internal tools. Live tooling on the M, SM, Y and YS versions is rated 11 - 12.5 kW, 30 - 34.5 Nm and 6,000 - 10,000 rpm.
04
Biglia gives 455.1 x 206.5 x 204.2 cm for the machine with swarf conveyor, the last figure being the height, and a spindle centre height of 1,080 mm. This spindle size is listed at 6,700 kg (14,771 lb) with the conveyor. The coolant tank holds 300 L. A note on the brochure's dimension drawing says it applies to the B620 ASA 6" only, so confirm the outline for this spindle with Biglia.
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