DN Solutions PUMA 4100 LC
Key Specifications
Max Spindle
Spindle Power
Max Turn Length
chuck size
max turning diameter
x axis travel
Overview
The DN Solutions PUMA 4100 LC is the max-chuck, long-bed variant of the PUMA 4100 family — a 21-inch chuck on a long bed with 2,155 mm of Z travel. It's built for shops that need to grip the largest workpieces and turn them at lengths up to 2,052 mm (81 in). If you're boring large-bore tubular parts, turning heavy flanged shafts, or facing large castings that also happen to be long, this is the machine.
The spindle delivers 37 kW (50 hp) with 3,280 N-m (2,419 ft-lb) of torque at up to 1,500 RPM. That torque figure is the highest on the long-bed 4100 platform, matching the standard-bed 4100 C. The 21-inch chuck provides secure workholding on large-diameter and large-bore components where smaller chucks can't develop adequate clamping force.
Max turning diameter is 550 mm (22 in) and max turning length is 2,052 mm (81 in). Axis travels are 352 mm on X and 2,155 mm on Z, with rapids at 16/20 m/min. The 10-station turret handles heavy-duty boring bars, facing tools, and OD roughing inserts. Box-way construction throughout.
At 11,900 kg (26,235 lb) on a 5,774 mm x 2,275 mm footprint, this is a substantial machine that needs proper floor preparation. The FANUC control handles the same G-code programs as every other 4100 variant.
The LC is a niche machine — you buy it when you specifically need that 21-inch grip on long parts. For general-purpose long-bed work, the LB's 15-inch chuck is more versatile. But when the job calls for turning a 500 mm diameter, 2-meter long steel component, there's no substitute for the jaw grip and torque that the LC provides.
Full Specifications
| Parameter | Value |
|---|---|
| Chuck Size | 21 inch |
| Max Turning Diameter | 550 mm |
| Max Turning Length | 2052 mm |
| X Axis Travel | 352 mm (13.9 in) |
| Z Axis Travel | 2,155 mm (84.8 in) |
| Rapid Traverse X | 16 m/min (630 in/min) |
| Rapid Traverse Z | 20 m/min (787 in/min) |
| Max Spindle Speed | 1,500 RPM |
| Spindle Motor Power | 37 kW (50 hp) |
| Spindle Torque | 3,280 N-m (2,419 ft-lb) |
| Turret Stations | 10 |
| Machine Length | 5,774 mm (227 in) |
| Machine Height | 2,272 mm (89 in) |
| Machine Width | 2,275 mm (90 in) |
| Machine Weight | 11,900 kg (26,235 lb) |
| CNC Control | FANUC |
| 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 5100XLC |
Specifications sourced from dn-solutions.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 21-inch chuck delivers maximum clamping force on large-diameter and large-bore workpieces
- 3,280 N-m (2,419 ft-lb) of torque handles the heaviest roughing cuts in the long-bed 4100 lineup
- 2,052 mm (81 in) turning length accommodates long, heavy-diameter components in a single setup
- 50 hp spindle sustains high material removal rates on large-surface facing and OD roughing
- Box-way rigidity absorbs vibration on heavy interrupted cuts typical of large casting and forging work
- Same FANUC control and programming as the entire PUMA 4100 family
Limitations
- 1,500 RPM max spindle speed is the lowest on any long-bed 4100 — limiting for smaller-diameter features
- 21-inch chuck adds rotational mass, slowing spindle acceleration for frequent speed changes
- 11,900 kg weight demands serious foundation work and heavy rigging for installation
- 10-station turret may be limiting for complex multi-operation programs on long parts
- Not cost-effective if the 15-inch LB chuck can adequately grip your typical parts
Best For
Frequently Asked Questions
01
When your parts need the 21-inch chuck for adequate clamping. This includes large-bore tubular work, thin-walled large-diameter components that need more jaw coverage, and heavy parts that create high centrifugal forces requiring strong jaw grip. If 15-inch jaws hold your parts fine, the LB's higher RPM is more versatile.
02
Both have 21-inch chucks on long beds. The 5100 LB swings 650 mm (vs 550 mm), has 60 hp (vs 50 hp), and 4,041 N-m torque (vs 3,280 N-m). If your parts exceed 22 inches diameter or you need heavier cuts, the 5100 LB is the step up. The 4100 LC costs less and is sufficient for work within its envelope.
03
Yes, the long bed supports steady rest installation. This is often necessary on the LC since large-diameter, long parts are heavy enough to cause deflection even with tailstock support. Many shops run both tailstock and steady rest simultaneously on the heaviest workpieces.
04
The 21-inch chuck configuration comes with a large spindle bore, but the exact dimension varies by build specification. It's large enough for most pass-through applications typical at this machine class. Contact your DN Solutions dealer for the precise bore diameter on your configuration.
Videos
TITANS of CNC MACHINING
Pierson Workholding
PRIMEMACHINERY
Perfection Global
