Geminis GT11i-G2

Specs verified 2026-10-03 · geminislathes.com Updated 2026-10-03

Image: geminislathes.com, Geminis

Key Specifications

guideways

2 upper guides Box Type

front guide

1 front guide protected from chips

chip evacuation

By means of optional double conveyors

max workpiece weight

45,000 / 150,000 kg (99,206 / 330,688 lb)

swing over bed

2,600 - 3,600 mm (102.4 - 141.7 in)

swing over carriage

2,000 - 3,000 mm (78.7 - 118.1 in)

How much does the Geminis GT11i-G2 cost?

Price estimate

Uncertain

We do not have a price for the Geminis GT11i-G2 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 Geminis GT11i-G2 is a very large horizontal CNC lathe: 2,600 to 3,600 mm (102.4 to 141.7 in) of swing over the bed, 2,000 to 3,000 mm (78.7 to 118.1 in) over the carriage, and maximum workpiece weights listed as 45,000 / 150,000 kg (99,206 / 330,688 lb).

A 150,000 kg workpiece is a lifting and foundation problem before it is a turning problem. Crane capacity over the machine, the floor beneath it and the way the part is brought onto the lathe all have to be settled with Geminis ahead of the order, and the table offers no machine weight or footprint to plan from. With a length range of 1 - 24 m (39.4 - 944.9 in), the building may need as much attention as the lathe.

The swing rows are ranges, so the diameter is specified per machine. The smallest GT11i-G2 matches the largest GT9i-G2 at 2,600 mm (102.4 in) over the bed, but the GT9i-G2 lists 25,000 / 60,000 kg (55,115 / 132,275 lb).

The construction rows are brief. There are 2 upper guides Box Type and 1 front guide protected from chips. The headstock works through 4 speed ranges with automatic changeover and main shaft oscillation, which gives low ranges for turning large diameters at low spindle speed. Chips leave by double conveyors, listed as an option.

Full Specifications

Parameter	Value
Guideways	2 upper guides Box Type
Front Guide	1 front guide protected from chips
Chip Evacuation	By means of optional double conveyors
Max Workpiece Weight	45,000 / 150,000 kg (99,206 / 330,688 lb)
Swing Over Bed	2,600 - 3,600 mm (102.4 - 141.7 in)
Swing Over Carriage	2,000 - 3,000 mm (78.7 - 118.1 in)
Length Range	1 - 24 m (39.4 - 944.9 in)
Spindle Speed Ranges	4 speed ranges with automatic changeover and main shaft oscillation

Specifications sourced from geminislathes.com — verified 2026-10-03

Strengths & Limitations

Strengths

Swing over bed of up to 3,600 mm (141.7 in), with up to 3,000 mm (118.1 in) over the carriage
Workpiece weight listed up to 150,000 kg (330,688 lb)
Four geared ranges with automatic changeover and main shaft oscillation for large-diameter turning
Chip-protected front guide alongside the 2 upper guides Box Type

Limitations

No machine weight, footprint or power figures are listed, although all three shape the foundation and electrical supply for a lathe of this size
The lower of the two listed workpiece weights is 45,000 kg (99,206 lb); the table does not say which configuration reaches 150,000 kg (330,688 lb)
Double chip conveyors are optional
Swing over the carriage is 2,000 mm (78.7 in) at the bottom of the range, so the chosen size matters for long work

Best For

Very heavy rotors, rolls and shafts up to 150,000 kg (330,688 lb) Diameters from 2,000 to 3,000 mm (78.7 to 118.1 in) over the carriage Short, wide parts up to 3,600 mm (141.7 in) of swing over bed Work too heavy for the GT9i-G2

Frequently Asked Questions

01 How big a part can the GT11i-G2 turn?

Swing over the bed is listed as 2,600 - 3,600 mm (102.4 - 141.7 in) and swing over the carriage as 2,000 - 3,000 mm (78.7 - 118.1 in), depending on the size ordered. Workpiece weight is 45,000 / 150,000 kg (99,206 / 330,688 lb) and the length range is 1 - 24 m (39.4 - 944.9 in).

02 What should be checked before installing a GT11i-G2?

Everything the table leaves out. It lists a workpiece weight of up to 150,000 kg (330,688 lb) and a length range of 1 - 24 m (39.4 - 944.9 in), but no machine weight, footprint, foundation or power data. Those figures, plus crane capacity for the heaviest part, need to come from Geminis for the exact configuration.

03 How does the GT11i-G2 compare with the GT9i-G2?

It begins where the GT9i-G2 ends. The GT9i-G2 lists 2,000 - 2,600 mm (78.7 - 102.4 in) of swing over bed and 25,000 / 60,000 kg (55,115 / 132,275 lb). The GT11i-G2 lists 2,600 - 3,600 mm (102.4 - 141.7 in) and 45,000 / 150,000 kg (99,206 / 330,688 lb).