DN Solutions PUMA 4100 XLMC
Key Specifications
Spindle Power
Max Turn Length
chuck size
max turning diameter
x axis travel
z axis travel
Overview
The DN Solutions PUMA 4100 XLMC is the biggest chuck, highest torque option in the extra-long 4100 lineup. It pairs a 21-inch chuck with 2,432 Nm (1,794 ft-lb) of torque from a 37 kW (50 hp) spindle — the kind of muscle you need for grabbing heavy castings, large flanges, and oversized forgings and turning them down to spec over lengths up to 3,028 mm (119 in).
This machine is built for shops that deal in big, heavy parts. The 21-inch chuck on an A2-15 spindle nose can clamp workpieces that would be borderline on a 15-inch chuck, giving you the clamping force and concentricity control needed for precision work on large diameters. The spindle tops out at 1,500 RPM, which sounds low until you calculate surface speed on a 22-inch diameter part — that's well over 2,600 SFM, plenty fast for steel finishing.
Z-axis travel stretches to 3,150 mm (124 in), matching the XLMA and XLMB variants. The 12-station turret with 4,000 RPM live tooling handles cross-drilling, tapping, and milling operations without pulling the part for secondary work. That's a significant advantage when you're dealing with parts that weigh hundreds of kilograms and take serious effort to re-chuck.
The XLMC tips the scales at 13,050 kg (28,770 lb), the heaviest in the 4100 XL series. That mass isn't dead weight — it's structural rigidity that keeps the machine stable during heavy interrupted cuts. The box-way construction across the full bed length ensures consistent accuracy whether you're cutting near the chuck or 3 meters away at the tailstock end.
Rapids run at 16 m/min (630 ipm) on X and 20 m/min (787 ipm) on Z with full 352 mm (14 in) of X-axis cross travel. The FANUC 0i-TF Plus control is the standard across DN Solutions' turning lineup, offering proven reliability and broad support. Specs sourced from DN Solutions published data.
Full Specifications
| Parameter | Value |
|---|---|
| Chuck Size | 21 inch |
| Max Turning Diameter | 550 mm |
| Max Turning Length | 3028 mm |
| X Axis Travel | 352 mm (14 in) |
| Z Axis Travel | 3,150 mm (124 in) |
| X Axis Rapid Traverse | 16 m/min (630 ipm) |
| Z Axis Rapid Traverse | 20 m/min (787 ipm) |
| Max Spindle Speed | 1,500 RPM |
| Spindle Motor Power | 37 kW (50 hp) |
| Spindle Torque | 2,432 Nm (1,794 ft-lb) |
| Turret Stations | 12-station turret |
| Rotary Tool Speed | 4,000 RPM |
| Machine Weight | 13,050 kg (28,770 lb) |
| CNC Control | FANUC 0i-TF Plus |
| 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 stationRotary Tool r/min |
| No Of Tool Station | Rotary Tool r/min |
| Dimensions | LengthHeightWidthWeight |
| Favorites | PUMA 5100XLMB |
| 12 Ea | 4000 RPM |
Specifications sourced from dn-solutions.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 21-inch chuck handles oversized forgings, castings, and flanges that won't fit in smaller machines
- 2,432 Nm (1,794 ft-lb) of torque is massive — you can take aggressive cuts in tough materials without stalling
- 3,028 mm max turning length covers extremely long shaft and roller work in a single setup
- 13,050 kg machine weight provides excellent vibration damping and thermal stability during heavy cutting
- Live tooling at 4,000 RPM eliminates secondary setups on large parts that are difficult to re-chuck
- FANUC 0i-TF Plus control offers proven reliability with broad service network support
Limitations
- 1,500 RPM max spindle speed limits surface speed on smaller diameters — this is a big-part machine
- 13,050 kg requires serious foundation work and rigging expertise for installation
- Large footprint needs dedicated floor space in shops already packed with equipment
- 21-inch chuck and associated workholding fixtures add significant tooling investment
- Higher price point than XLMA and XLMB variants reflects the larger spindle and chuck
Best For
Frequently Asked Questions
01
Choose the XLMC when your parts require a 21-inch chuck for secure clamping. If you're regularly working with castings, forgings, or flanges larger than 15 inches in diameter, the XLMC's bigger chuck and higher torque (2,432 Nm vs 1,024 or 1,611 Nm) make a real difference in rigidity and safety. The trade-off is lower max RPM.
02
For the large-diameter parts this machine is designed for, absolutely. At 22 inches diameter and 1,500 RPM, you're running over 2,600 SFM — that's well within carbide insert recommendations for steel finishing. You'd only feel limited if you were trying to finish small diameters in aluminum, which isn't this machine's intended use.
03
DN Solutions specs a hydraulic 21-inch 3-jaw chuck as standard. Options include 4-jaw independent chucks, collet systems, and custom soft jaws. The A2-15 spindle nose accepts standard chuck adapters. For very large or irregular workpieces, faceplate mounting with dogs is also common.
04
The full machine footprint including chip conveyor and electrical cabinet typically runs around 8-9 meters long by 3-3.5 meters wide. Add another meter on each side for service access. DN Solutions provides detailed foundation and layout drawings with the quotation to help with shop planning.
05
Yes. Hydraulic steady rests are a common option on the PUMA 4100 XL series. They're essential for supporting long, slender shafts to prevent deflection during turning. DN Solutions offers follow rests and fixed steady rests that mount to the bed and can be positioned along the full Z-axis travel.
