Geminis GM5i
Image: geminislathes.com, Geminis
Key Specifications
headstock type
column
bed type
device change
tool changer
max workpiece weight
How much does the Geminis GM5i cost?
Price estimate
We do not have a price for the Geminis GM5i 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 GM5i is a multi-tasking lathe for workpieces up to 15,000 kg (33,069 lb), with a maximum turning diameter listed as 1,300 / 1,500 mm (51.2 / 59.1 in) and a length range of 1 - 24 m (39.4 - 944.9 in). It is the smallest of three related sizes: the GM7i lists 1,600 / 1,800 mm (63.0 / 70.9 in) and the GM9i 2,000 / 2,500 mm (78.7 / 98.4 in).
What the table describes is mostly hardware for doing more than turning. The machining side is a Multiprocess column. Tools are exchanged by an ATC, and a separate row lists automatic device storage and switching, so the units that hold the tools are changed without manual work as well. The point of that arrangement is to finish a long, heavy part in one setup instead of moving it between machines, which at 15,000 kg is slow and risks losing alignment.
The spindle side is a Twin Drive Headstock on a Monoblock bench. No power, torque or speed is given for either the headstock or the column, and the size of the tool magazine is not stated. Those are the figures to ask for first, together with which variant gives the 1,500 mm diameter.
Full Specifications
| Parameter | Value |
|---|---|
| Headstock Type | Twin Drive Headstock |
| Column | Multiprocess column |
| Bed Type | Monoblock bench |
| Device Change | Automatic device storage and switching |
| Tool Changer | ATC automatic tool change |
| Max Workpiece Weight | 15,000 kg (33,069 lb) |
| Max Turning Diameter | 1,300 / 1,500 mm (51.2 / 59.1 in) |
| Length Range | 1 - 24 m (39.4 - 944.9 in) |
Specifications sourced from geminislathes.com — verified 2026-10-03
Strengths & Limitations
Strengths
- Turning plus further processes in one setup: Multiprocess column with ATC automatic tool change
- Automatic device storage and switching, so changing the machining unit is not a manual job
- Single workpiece weight rating of 15,000 kg (33,069 lb)
- Length range of 1 - 24 m (39.4 - 944.9 in) for long shafts and rolls
Limitations
- Turning diameter stops at 1,300 / 1,500 mm (51.2 / 59.1 in); the GM7i lists 1,600 / 1,800 mm (63.0 / 70.9 in)
- The table gives no tool magazine capacity for the ATC
- No spindle power, torque or speed figures are listed for the Twin Drive Headstock or the column
Best For
Frequently Asked Questions
01
Three rows of its table: a Multiprocess column, ATC automatic tool change, and automatic device storage and switching. Together they mean both the tools and the devices that carry them are exchanged by the machine, so a part of up to 15,000 kg (33,069 lb) can stay in place while different operations are done.
02
It is listed as 1,300 / 1,500 mm (51.2 / 59.1 in). The table shows two values without naming the variants they belong to, so confirm with Geminis which build gives 1,500 mm. Above that, the GM7i lists 1,600 / 1,800 mm (63.0 / 70.9 in).
03
The GT5i-G2 is a horizontal lathe with a 1,400 mm (55.1 in) swing over bed and workpiece weights of 8,000 / 12,000 kg (17,637 / 26,455 lb). The GM5i lists 15,000 kg (33,069 lb) and adds the Multiprocess column, the ATC and automatic device switching that the GT5i-G2 table does not list.
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