DN Solutions PUMA 4100 C

$175,000 - $245,000 Updated 2026-03-19

Key Specifications

Max Spindle

1,500 RPM

Spindle Power

37 kW (50 hp)

Max Turn Length

1002 mm

chuck size

21 inch

max turning diameter

550 mm

x axis travel

352 mm (13.9 in)

Overview

The DN Solutions PUMA 4100 C is the max-chuck variant of the standard-bed PUMA 4100, swinging a massive 21-inch chuck for gripping the largest workpieces the platform can accommodate. It pushes the PUMA 4100's torque to 3,280 N-m (2,419 ft-lb) with 37 kW (50 hp) at up to 1,500 RPM, targeting heavy chucking work on flanges, large housings, pipe fittings, and castings.

Max turning diameter is 550 mm (22 in) and max turning length is 1,002 mm (39 in) — slightly shorter than the 15-inch B variant's 1,042 mm because the larger chuck body takes up more of the Z envelope. Axis travels are 352 mm on X and 1,105 mm on Z, with rapids at 16/20 m/min. The 10-station turret handles standard heavy-duty tool blocks.

The machine weighs 10,450 kg (23,038 lb), about 500 kg more than the B due to the larger headstock and chuck assembly. Same 4,654 mm x 2,056 mm footprint. FANUC control. Box-way construction throughout.

The 21-inch chuck and 3,280 N-m torque combination is built for one thing: gripping and cutting large, heavy workpieces with authority. The 1,500 RPM ceiling means surface speed will be limiting on parts under about 6-inch diameter, but if you're running the 21-inch chuck, most of your work is bigger than that. At 500 mm OD, 1,500 RPM gives you 2,356 m/min surface speed — more than enough for any steel or alloy.

For shops doing heavy chucking work — facing flanges, boring large housings, OD turning large-diameter castings — the 4100 C gives you the jaw grip and torque to take heavy cuts without jaw slip or chatter. It's the workholding capacity that sells this machine, more than any other single spec.

Full Specifications

Parameter	Value
Chuck Size	21 inch
Max Turning Diameter	550 mm
Max Turning Length	1002 mm
X Axis Travel	352 mm (13.9 in)
Z Axis Travel	1,105 mm (43.5 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	4,654 mm (183 in)
Machine Height	2,194 mm (86 in)
Machine Width	2,056 mm (81 in)
Machine Weight	10,450 kg (23,038 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 provides massive workholding grip for large flanges, housings, and castings without jaw slip
3,280 N-m (2,419 ft-lb) of torque enables aggressive roughing on large-diameter parts at heavy feeds
50 hp spindle motor sustains high material removal rates through long roughing passes on big workpieces
Box-way construction delivers the rigidity needed for heavy interrupted cuts on castings and forgings
Same bed and footprint as the 4100 B — the larger chuck doesn't increase the machine's floor space requirements
Proven PUMA 4100 platform with decades of service history and strong dealer support

Limitations

1,500 RPM max spindle speed limits surface speed on smaller-diameter features and finishing operations
1,002 mm max turning length is 40 mm shorter than the 4100 B due to the larger chuck body
21-inch chuck is heavy and creates more rotational inertia, slowing spindle acceleration and deceleration
16/20 m/min rapids are slow compared to smaller, lighter machines
10-station turret may feel limiting on complex multi-operation programs

Best For

Heavy chucking operations on large flanges, pipe fittings, and castings up to 22 inches in diameter Oil and gas equipment manufacturers turning large valve bodies, bonnets, and wellhead components Shops doing heavy facing, boring, and OD turning on parts that need 21-inch jaws for secure grip Heavy fabrication shops converting manual lathe work to CNC for large-diameter production parts Large job shops handling oversized workpieces that slip or deform in smaller 15-inch chucks

Frequently Asked Questions

01 When do I need the 21-inch 4100 C over the 15-inch 4100 B?

When your parts have large diameters or irregular shapes that need more jaw coverage for secure clamping. The 21-inch chuck also handles larger-bore tubular workpieces where a 15-inch chuck can't reach far enough. If your parts fit securely in 15-inch jaws, the B's higher RPM (2,000 vs 1,500) and lighter chuck give you better cycle times.

02 Can I swap between different chuck sizes on the PUMA 4100?

The spindle nose and bearing assembly are configured for the specific chuck size at build time. While it's theoretically possible to change chucks, it's not a quick-swap operation and may require spindle nose adapter changes. Most shops buy the variant that matches their primary work and use different jaws for variety.

03 How does the 4100 C compare to the PUMA 5100 B?

The 5100 B swings 650 mm (26 in) vs the 4100 C's 550 mm (22 in), has 45 kW vs 37 kW spindle power, and 4,041 N-m vs 3,280 N-m torque — but both run 21-inch chucks. If you need the larger swing and more torque, step up to the 5100. If 22-inch swing is enough, the 4100 C saves money and weight.

04 What's the largest bore I can run through the 4100 C spindle?

The 21-inch chuck configuration has a large spindle bore, but the exact dimension depends on the specific build. Contact your DN Solutions dealer for the bore specification on the C variant. For large-bore pass-through work, the PUMA 700 or 800 series offers even larger bores.