Republic Lagun AT-1640-G-TW-CNC
Image: lagun.com, Republic Lagun
Key Specifications
Spindle Power
controlled axes
swing over bed
distance between centers
bed width
spindle bore
How much does the Republic Lagun AT-1640-G-TW-CNC cost?
Price estimate
We do not have a price for the Republic Lagun AT-1640-G-TW-CNC 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 gear head CNC lathe with a Ø 16.14 in (410 mm) swing, the Republic Lagun AT-1640-G-TW-CNC sits in the middle of the American Turnmaster CNC range. It has 35.8 in (910 mm) between centers with the manual tailstock and a bed 10.24 in (260 mm) wide, and the maker calls it a fully automated high-speed precision lathe.
The headstock gets most of the maker's attention. Headstock and gears are hardened and ground for quiet, vibration-free running, and the description says the headstock regulates temperature around the spindle to prevent distortion after long periods of turning. A labyrinthian collar and protector cover at the spindle keep coolant and chips out. Two bores are offered: Ø 2.3 in (58 mm) as standard and Ø 1.8 in (45 mm) as the option.
Two motors are listed. The standard one is rated 7.4 HP (5.5 kW) continuous and 10 HP (7.5 kW) on the 15 min rating, the optional one 10 HP (7.5 kW) and 14.75 HP (11 kW) on the same basis. The maker's speed entry for this column is not printed consistently, so the spindle range should be requested in writing.
Tooling choice changes the travels. The 4 way tool post gives 8.5 in (216 mm) of X and 32 in (815 mm) of Z, and the P8 turret in the rear position gives 10.7 in (272 mm) of X and 26.38 in (670 mm) of Z. Rapids are 295 ipm (7.5 m/min) and 394 ipm (10 m/min). The lathe weighs 4,740 lb (2,150 kg) net and 5,401 lb (2,450 kg) gross.
Full Specifications
| Parameter | Value |
|---|---|
| Controlled Axes | 2 axes |
| Swing Over Bed | Ø 16.14 in (410 mm) |
| Distance Between Centers | 35.8 in (910 mm) (manual tailstock) |
| Bed Width | 10.24 in (260 mm) |
| Spindle Bore | STD. Ø 2.3 in (58 mm); OPT. Ø 1.8 in (45 mm) |
| X Axis Travel | 8.5 in (216 mm) / 10.7 in (272 mm) (4 way tool post / P8 turret, rear position) |
| Z Axis Travel | 32 in (815 mm) / 26.38 in (670 mm) (4 way tool post / Hyd. P8 turret, rear position) |
| Rapid Traverse X Z | 295 ipm (7.5 m/min) / 394 ipm (10 m/min) |
| Tailstock Quill Travel | 5.5 in (140 mm) |
| Spindle Motor Power | STD. 7.4 / 10 HP (5.5 / 7.5 kW) (Con. / 15 min rated); OPT. 10 / 14.75 HP (7.5 / 11 kW) (Con. / 15 min rated) |
| Hydraulic Pump Motor | OPT. 1 HP (0.75 kW); OPT. 2 HP (1.5 kW) |
| Coolant Pump Motor | 1/6 HP (0.125 kW) |
| Machine Weight | 4,740 lb (2,150 kg) / 5,401 lb (2,450 kg) (net / gross, approx.) |
| Packing Dimensions | 105.51 in (2,680 mm) x 79.92 in (2,030 mm) x 86.61 in (2,200 mm) |
Specifications sourced from lagun.com — verified 2026-10-04
Strengths & Limitations
Strengths
- Hardened and ground headstock and gears, described by the maker as smooth, quiet and vibration-free
- Choice of two main motors, up to 10 HP (7.5 kW) continuous and 14.75 HP (11 kW) on the 15 min rating
- Ø 16.14 in (410 mm) swing on a 10.24 in (260 mm) wide bed
- Spindle sealed by a labyrinthian collar and protector cover against coolant and chips
- Rapid traverse of 295 ipm (7.5 m/min) in X and 394 ipm (10 m/min) in Z
Limitations
- No consistent spindle speed range is published for this model
- Z travel is 26.38 in (670 mm) once the P8 turret is fitted
- The optional spindle bore is smaller, Ø 1.8 in (45 mm), than the standard Ø 2.3 in (58 mm)
- Coolant pump is a small 1/6 HP (0.125 kW) unit
Best For
Frequently Asked Questions
01
Two. The standard main spindle motor is 7.4 HP (5.5 kW) continuous and 10 HP (7.5 kW) on the 15 min rating. The optional motor is 10 HP (7.5 kW) continuous and 14.75 HP (11 kW) on the 15 min rating. A hydraulic oil pump of 1 HP (0.75 kW) or 2 HP (1.5 kW) is also optional.
02
Swing over the bed is Ø 16.14 in (410 mm) and the distance between centers with the manual tailstock is 35.8 in (910 mm). The bed is 10.24 in (260 mm) wide and the tailstock quill travels 5.5 in (140 mm).
03
With the 4 way tool post the table gives 8.5 in (216 mm) of X travel and 32 in (815 mm) of Z travel. With the P8 turret in the rear position it gives 10.7 in (272 mm) of X and 26.38 in (670 mm) of Z. The turret trades Z stroke for cross travel.
04
Yes. The AT-1660-G-TW-CNC has the same Ø 16.14 in (410 mm) swing with 55.9 in (1,420 mm) between centers and 52 in (1,325 mm) of Z travel with the tool post. The AT-1660-G-TW-CNC weighs 4,960 lb (2,250 kg) net.
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