DN Solutions PUMA GT 3100
Key Specifications
X Travel
Z Travel
Max Turn Length
chuck size
max turning diameter
x axis rapid traverse
Overview
The DN Solutions PUMA GT 3100 is a heavy-duty 12-inch chuck horizontal turning center that steps up significantly from the GT 2600 series in both power and rigidity. With 35 kW of spindle power and 1,613 Nm of torque, this machine is built for aggressive metal removal on medium-to-large parts that demand more than a typical 10-inch chuck lathe can deliver.
The spindle runs at 2,800 RPM with 35 kW (47 hp) and that substantial 1,613 Nm (1,190 ft-lbs) of torque through a 12-inch chuck. That's more than double the torque of the GT 2600 series — a dramatic increase that transforms what you can do with heavy roughing passes on steel, stainless, and cast iron. Max turning diameter hits 481 mm (18.9 in) with 755 mm (29.7 in) turning length.
Axis travels span 260 mm on X and 830 mm on Z, with 24/30 m/min rapid traverse. The 10-station turret handles most tooling needs for production parts. At 5,500 kg (12,125 lb) and 4,068 mm x 2,102 mm, the GT 3100 is a substantial machine but still manageable for most shop installations.
The GT 3100 is where DN Solutions gets serious about heavy turning. It's the standard-bed flagship of the horizontal turning lineup (below the PUMA 800 series), designed for shops where the GT 2600's torque isn't enough. For turning large flanges, coupling halves, heavy fittings, and chucked forgings, this machine's combination of power, gripping capacity, and GT series rigidity makes it a strong contender against Mazak Quick Turn 350, Okuma LB4000 EX II, and Haas ST-35. Specs sourced from DN Solutions published data.
Full Specifications
| Parameter | Value |
|---|---|
| Chuck Size | 12 inch |
| Max Turning Diameter | 481 mm |
| Max Turning Length | 755 mm |
| X-Axis Travel | 260 mm (10.2 in) |
| Z-Axis Travel | 830 mm (32.7 in) |
| X Axis Rapid Traverse | 24 m/min (945 ipm) |
| Z Axis Rapid Traverse | 30 m/min (1,181 ipm) |
| Main Spindle Speed | 2,800 RPM |
| Main Spindle Power | 35 kW (47 hp) / 1,613 Nm (1,190 ft-lbs) |
| Tool Stations | 10 |
| Machine Length | 4,068 mm (160.2 in) |
| Machine Width | 2,102 mm (82.8 in) |
| Machine Height | 1,915 mm (75.4 in) |
| Machine Weight | 5,500 kg (12,125 lb) |
| Metric | IMPERIAL |
| Capacity | Chuck sizeMax. Turning DiameterMax. Turning Length |
| Travels | X-Axis Rapid TraverseZ-Axis Rapid TraverseX-Axis Travel DistanceZ-Axis Travel Distance |
| Main Spindle | Max. Spindle SpeedMax. Spindle PowerMax. Spindle Torque |
| Turret | No. of tool station |
| Dimensions | LengthHeightWidthWeight |
| Favorites | PUMA GT3100L |
Specifications sourced from dn-solutions.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 35 kW spindle with 1,613 Nm torque delivers more than double the turning power of the GT 2600 series for heavy roughing
- 12-inch chuck provides secure gripping on large-diameter parts including forgings, castings, and heavy blanks
- GT series premium construction with heavy castings ensures rigidity and stability under aggressive cutting loads
- 5,500 kg machine mass provides good vibration damping without requiring extreme foundation requirements
- Competitive pricing against Mazak, Okuma, and Haas 12-inch chuck lathes with comparable or better torque specifications
- 481 mm max turning diameter handles a wide range of medium-to-large chucked parts
Limitations
- 2,800 RPM spindle speed limits small-diameter turning where higher surface speeds improve finish quality
- 755 mm max turning length is moderate — the GT 3100 L extends to 1,275 mm for longer parts
- 10-station turret provides fewer tool positions than some 12-station competitors
- Two-axis configuration only — no live tooling or C-axis capability in the base GT 3100
- No sub-spindle option means parts requiring back-working need manual rechucking
Best For
Frequently Asked Questions
01
The GT 3100 has 63% more torque (1,613 Nm vs 990 Nm) and more spindle power (35 kW vs 26 kW) than the GT 2600 XLB, despite sharing the same 12-inch chuck size. The GT 2600 XLB offers much longer turning length (1,573 mm vs 755 mm). Choose the GT 3100 for heavy, shorter parts where power matters; choose the XLB for long parts where reach matters.
02
New GT 3100 machines typically price between $140,000 and $200,000 depending on options. The heavy-duty spindle and premium construction carry a price premium over the GT 2600 series. Common options including chip conveyor, tailstock, and high-pressure coolant affect final pricing.
03
The GT 3100's 1,613 Nm of torque and rigid construction make it capable of hard turning on materials up to approximately 55 HRC with appropriate CBN or ceramic tooling. For materials above 55 HRC, dedicated hard turning machines may be more appropriate. The GT series' rigidity is a significant advantage for hard turning compared to lighter machines.
04
The L variant extends turning length to 1,275 mm (vs 755 mm) and Z-axis travel to 1,350 mm. If your parts regularly exceed 700 mm in length, get the L. For chucked work under 750 mm, the standard bed is more compact and slightly less expensive. Both share the same 35 kW spindle and 12-inch chuck.
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