Republic Lagun AT-1840-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-1840-G-TW-CNC cost?
Price estimate
We do not have a price for the Republic Lagun AT-1840-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
Low-speed pull is the point of the Republic Lagun AT-1840-G-TW-CNC. Where the smaller American Turnmaster CNC lathes chase rpm, this 18.11 in (460 mm) swing model has a two-range gear head: 27-870 rpm in low and 871-2,500 rpm in high. Its main motor is rated 10 HP (7.5 kW) continuous and 15 HP (11 kW) on the 15 min rating.
A 27 rpm bottom speed in a geared low range is what large diameters, coarse threads and interrupted cuts call for, and the machine around it is sized to suit. The bed is 12 in (305 mm) wide, compared with 10.24 in (260 mm) on the AT-1640-G-TW-CNC. The tailstock quill is Ø 2.677 in (68 mm) with 6 in (153 mm) of travel. The standard spindle bore is Ø 2.36 in (60 mm) and the optional bore is larger, Ø 2.56 in (65 mm).
Distance between centers is 37.40 in (950 mm) with the manual tailstock. Z travel is 33.46 in (850 mm) with the 4 way tool post and 27.95 in (710 mm) with the hydraulic P8 turret in the rear position. The maker's X travel entry for this model repeats the Z figure and cannot be relied on, so the cross travel should be confirmed.
The maker's page covers this model together with its long-bed partner and describes a FANUC CNC Series 0i-F Plus display with a 10.4 in screen, though the feature list reads FANUC 0i Mate – TC. Rapid traverse is 295 ipm (7.5 m/min) in X and 394 ipm (10 m/min) in Z, and net weight is 5,181 lb (2,350 kg).
Full Specifications
| Parameter | Value |
|---|---|
| Controlled Axes | 2 axes |
| Swing Over Bed | 18.11 in (460 mm) |
| Distance Between Centers | 37.40 in (950 mm) (manual tailstock) |
| Bed Width | 12 in (305 mm) |
| Spindle Bore | STD. Ø 2.36 in (60 mm); OPT. Ø 2.56 in (65 mm) |
| Spindle Speed Range | L: 27-870 rpm / H: 871-2,500 rpm |
| Z Axis Travel | 33.46 in (850 mm) / 27.95 in (710 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 Diameter | Ø 2.677 in (68 mm) |
| Tailstock Quill Travel | 6 in (153 mm) |
| Spindle Motor Power | 10 HP (7.5 kW) / 15 HP (11 kW) (con. / 15 min rated) |
| Hydraulic Pump Motor | OPT. 1 HP (0.75 kW); OPT. 2 HP (1.5 kW) |
| Coolant Pump Motor | 1/4 HP (0.188 kW) |
| Machine Weight | 5,181 lb (2,350 kg) / 6,063 lb (2,750 kg) (net / gross, approx.) |
Specifications sourced from lagun.com — verified 2026-10-04
Strengths & Limitations
Strengths
- Geared low range of 27-870 rpm for large diameters and heavy cuts
- 10 HP (7.5 kW) continuous, 15 HP (11 kW) 15 min main motor as listed
- 12 in (305 mm) bed width and a Ø 2.677 in (68 mm) tailstock quill
- Optional Ø 2.56 in (65 mm) spindle bore
Limitations
- Top speed is 2,500 rpm, low for small-diameter work
- The maker's X travel figure for this model is not usable as printed
- Z travel is 27.95 in (710 mm) with the P8 turret
- Hydraulic oil pump is optional at 1 HP (0.75 kW) or 2 HP (1.5 kW)
Best For
Frequently Asked Questions
01
Two geared ranges: L from 27 to 870 rpm and H from 871 to 2,500 rpm. The main spindle motor is listed at 10 HP (7.5 kW) continuous and 15 HP (11 kW) on the 15 min rating.
02
Ø 2.36 in (60 mm) as standard, with Ø 2.56 in (65 mm) as the option. Unlike the AT-1640-G-TW-CNC, where the optional bore of Ø 1.8 in (45 mm) is the smaller one, the option here is the larger bore.
03
In bed length. The AT-1860-G-TW-CNC has 57.08 in (1,450 mm) between centers and 53.15 in (1,350 mm) of Z travel with the tool post, against 37.40 in (950 mm) and 33.46 in (850 mm) on the AT-1840-G-TW-CNC. The two share one product page on the maker's site.
04
The maker's description says the lathe is equipped with the FANUC CNC Series 0i-F Plus display with a 10.4 in screen, Fine Surface Technology and Fast Cycle-time Technology. The feature list on the same page names FANUC 0i Mate – TC, so the control should be confirmed when ordering.
More from Republic Lagun
Other CNC Lathes / Turning Centers
Sharp STB-38
Goodway GS-2800
Honor Seiki VL-86MT
Johnford HT-60-2D
Campro CPL-3010SY
