Republic Lagun UTC-1840
Key Specifications
Spindle Taper
Max Turn Length
controlled axes
swing over bed
distance between centers
max turning diameter
How much does the Republic Lagun UTC-1840 cost?
Price estimate
We do not have a price for the Republic Lagun UTC-1840 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
Bar capacity is what separates the Republic Lagun UTC-1840 from the smaller Universal Turning Centers. Its spindle has a Ø 2.56 in (65 mm) bore behind an A2-6 nose, where the UTC-1740 is listed with a D1-6 camlock and a Ø 2.06 in (52.5 mm) bore. The swing over the bed is Ø 18.11 in (460 mm) and the distance between centers 35.43 in (900 mm). The maker lists it as a column in the series table, without a page of its own.
The speed ranges need a careful look. The table gives 270-830 rpm in the low range and 831-2,500 rpm in the high, changed pneumatically in 2 steps, so the slowest listed speed is 270 rpm. On a part near the 10.2 in (260 mm) maximum working diameter that is a high surface speed for tough materials, and large threads or interrupted cuts would normally want less. Ask whether the low limit is as printed.
Within those limits the envelope is practical for chucking work. X travel is 9.05 in (230 mm) and Z travel 33.46 in (850 mm). The manual 4 way tool post allows parts 29.52 in (750 mm) long and 10.2 in (260 mm) in diameter, and the optional hydraulic P8 turret 23.62 in (600 mm) and 9.84 in (250 mm). Rapid traverse is 295 ipm (7.5 m/min) in X and 394 ipm (10 m/min) in Z.
The bed is 12 in (305 mm) wide, the tailstock quill Ø 2.67 in (68 mm) with 6 in (153 mm) of travel, and the machine weighs 5,170 lb (2,350 kg) net. The maker's table carries no clean main motor rating for this model.
Full Specifications
| Parameter | Value |
|---|---|
| Controlled Axes | 2 AXIS |
| Swing Over Bed | Ø 18.11 in (460 mm) |
| Distance Between Centers | 35.43 in (900 mm) |
| Max Turning Length | 29.52 in (750 mm) / 23.62 in (600 mm) (4 way tool post / Hyd. P8 turret) |
| Max Turning Diameter | 10.2 in (260 mm) / 9.84 in (250 mm) (4 way tool post / Hyd. P8 turret) |
| Bed Width | 12 in (305 mm) |
| X Axis Travel | 9.05 in (230 mm) |
| Z Axis Travel | 33.46 in (850 mm) |
| Spindle Nose | A2-6, Ø69 mm |
| Spindle Bore | Ø 2.56 in (65 mm) |
| Spindle Taper | Taper 1/20 |
| Spindle Speeds | Infinitely variable |
| Spindle Speed Range | L: 270-830 rpm / H: 831-2,500 rpm |
| Gear Steps | Pneumatic change 2 steps |
| Tailstock Quill Diameter | Ø 2.67 in (68 mm) |
| Tailstock Quill Travel | 6 in (153 mm) |
| Rapid Traverse X Z | 295 ipm (7.5 m/min) / 394 ipm (10 m/min) |
| Machine Weight | 5,170 lb (2,350 kg) / 6,270 lb (2,850 kg) (net / gross, approx.) |
| Packing Dimensions | 112.6 in (2,860 mm) x 83.3 in x 92.1 in (2,115 mm x 2,340 mm) |
Specifications sourced from lagun.com — verified 2026-10-04
Strengths & Limitations
Strengths
- Ø 2.56 in (65 mm) spindle bore with an A2-6 nose
- 10.2 in (260 mm) maximum working diameter with the 4 way tool post
- Rapid traverse of 295 ipm (7.5 m/min) in X and 394 ipm (10 m/min) in Z, faster than the UTC-1740 at 196.8 ipm (5 m/min) and 295.3 ipm (7.5 m/min)
- 12 in (305 mm) wide induction hardened and ground bed
Limitations
- Lowest listed spindle speed is 270 rpm, which is fast for large diameters in tough material
- Top speed of 2,500 rpm is the lowest high-range limit among the tri-way UTC models
- No consistent main motor rating in the maker's table for this model
- Working length falls to 23.62 in (600 mm) with the hydraulic P8 turret
Best For
Frequently Asked Questions
01
Ø 2.56 in (65 mm). The spindle nose is A2-6 with a Ø69 mm register and the internal taper is listed as 1/20. That is a larger through-hole than the Ø 2.06 in (52.5 mm) bore of the UTC-1740.
02
The maker's table lists an infinitely variable spindle with two ranges: 270-830 rpm in low and 831-2,500 rpm in high, with a pneumatic change between the 2 steps. Constant surface speed is standard according to the series feature list. The table does not give a usable motor rating for this column.
03
Swing over the bed is Ø 18.11 in (460 mm). With the manual 4 way tool post the maximum working diameter is 10.2 in (260 mm) and the working length 29.52 in (750 mm). With the hydraulic P8 turret they are 9.84 in (250 mm) and 23.62 in (600 mm). Distance between centers is 35.43 in (900 mm).
04
Yes. The UTC-1860 has 55.11 in (1,400 mm) between centers and 53.15 in (1,350 mm) of Z travel, compared with 35.43 in (900 mm) and 33.46 in (850 mm) here. The UTC-1860 weighs 5,720 lb (2,600 kg) net against 5,170 lb (2,350 kg) here.
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