DN Solutions PUMA 4100 XLMB
Key Specifications
Spindle Power
Max Turn Length
chuck size
max turning diameter
x axis travel
z axis travel
Overview
The DN Solutions PUMA 4100 XLMB is the 15-inch chuck version of the extra-long 4100 series, purpose-built for heavy-duty long-part turning where you need more workholding grip than the 12-inch XLMA provides. With 1,611 Nm (1,188 ft-lb) of torque from a 30 kW (40 hp) spindle, this machine grabs big-bore forgings, pipe fittings, and heavy shafts and doesn't let go.
The XLMB shares the same extra-long bed as the XLMA — 3,150 mm (124 in) of Z-axis travel and 3,068 mm (121 in) of max turning length. That's enough room for long drive shafts, hydraulic cylinders, and process rolls. The 15-inch chuck on an A2-11 spindle nose means you can clamp larger-diameter raw stock without relying on custom soft jaws to make up the difference.
Live tooling comes standard in the M-series designation. The 12-station turret spins driven tools at 4,000 RPM for cross-drilling, tapping, and light milling operations. You won't need to pull parts off the lathe for simple secondary features, which saves setup time and improves concentricity on features that reference the turned diameters.
The spindle tops out at 2,000 RPM — lower than the XLMA's 3,000 RPM — but that's the trade-off for the bigger chuck and higher torque. For the large-diameter parts this machine is designed for, 2,000 RPM still gives you plenty of surface speed. You're not turning pen blanks here; you're hogging steel.
X-axis travel is 352 mm (14 in) with rapids at 16 m/min (630 ipm). The box-way construction across the full bed length keeps everything rigid even when you're taking aggressive cuts 2+ meters from the chuck. The FANUC 0i-TF Plus control handles the programming, and most shops will run this machine in G-code with canned cycles for repetitive shaft work. At 12,550 kg (27,668 lb), plan for a proper foundation. Specs sourced from DN Solutions published data.
Full Specifications
| Parameter | Value |
|---|---|
| Chuck Size | 15 inch |
| Max Turning Diameter | 550 mm |
| Max Turning Length | 3068 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 | 2,000 RPM |
| Spindle Motor Power | 30 kW (40 hp) |
| Spindle Torque | 1,611 Nm (1,188 ft-lb) |
| Turret Stations | 12-station turret |
| Rotary Tool Speed | 4,000 RPM |
| Machine Weight | 12,550 kg (27,668 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
- 15-inch chuck provides secure clamping on larger-diameter forgings and heavy shafts without custom workholding
- 1,611 Nm (1,188 ft-lb) of torque handles aggressive roughing in tough materials without stalling
- 3,068 mm max turning length covers long shafts, hydraulic cylinders, and process rolls in a single setup
- 12-station turret with 4,000 RPM live tooling eliminates secondary mill operations for cross-drilling and keyways
- Box-way construction delivers consistent rigidity across the entire 3+ meter bed length
- FANUC 0i-TF Plus control is widely supported with deep operator familiarity across most shops
Limitations
- 2,000 RPM max spindle speed limits surface speed on smaller-diameter sections of long parts
- 30 kW (40 hp) spindle power is 10 hp less than the XLMA variant, though torque is significantly higher
- 12,550 kg weight requires reinforced foundations and careful rigging planning
- Large footprint demands dedicated floor space that smaller shops may not have available
- Rapids at 16/20 m/min won't win any speed races, though this is standard for the machine class
Best For
Frequently Asked Questions
01
The XLMB's 15-inch chuck gives you more clamping force and a bigger bore for large-diameter stock. It also delivers 57% more torque (1,611 vs 1,024 Nm). The trade-off is lower max RPM (2,000 vs 3,000). If your parts are bigger than 12 inches in diameter or need heavier cuts, the XLMB is the right choice.
02
Yes. The 15-inch chuck, long bed, and rigid box-way construction make the XLMB well-suited for pipe threading operations. The FANUC control supports standard threading cycles including single-point, multi-start, and tapered threads. Many oil and gas shops use the PUMA 4100 series for exactly this application.
03
DN Solutions specs the A2-11 spindle nose configuration for the XLMB. The exact bore diameter depends on the specific spindle option ordered, but it's designed to accommodate larger bar stock and tubular workpieces than the 12-inch chuck XLMA variant.
04
In the extra-long 15-inch chuck class, the XLMB competes with machines like the Okuma LB4000 EX-II Long Bed and the Mazak Quick Turn 450. The DN Solutions typically offers competitive pricing with strong dealer support. The box-way construction and FANUC control are well-proven in this market segment.
05
The 12-station turret accepts standard BMT or VDI tooling depending on the configuration ordered. Live tool stations run at 4,000 RPM for drilling, tapping, and milling operations. Most shops spec a mix of static and driven tool positions based on their typical part mix.
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