DN Solutions PUMA 4100 LA

$180,000 - $260,000 Updated 2026-03-19

Key Specifications

Max Spindle

3,000 RPM

Spindle Power

35 kW (47 hp)

Max Turn Length

2124 mm

chuck size

12 inch

max turning diameter

550 mm

x axis travel

352 mm (13.9 in)

Overview

The DN Solutions PUMA 4100 LA is the long-bed, 12-inch chuck variant of the PUMA 4100 platform, combining extended Z travel with the highest spindle speed in the 4100 family. It's the machine you pick when you need to turn long shafts, rollers, and cylindrical components up to 2,124 mm (84 in) in length while maintaining the surface speeds needed for efficient cutting.

The spindle runs 35 kW (47 hp) with 1,584 N-m (1,168 ft-lb) of torque at up to 3,000 RPM — that's 50% faster than the 15-inch B variant and double the speed of the 21-inch C. The 12-inch chuck trades some jaw grip for speed, making the LA the best 4100 variant for bar work and smaller-diameter shaft jobs. Max turning diameter is 550 mm (22 in) and max turning length stretches to 2,124 mm (84 in).

Axis travels are 352 mm on X and 2,155 mm on Z, with rapids at 16/20 m/min. The 12-station turret gives you two extra tool positions over the standard-bed B and C models' 10 stations. The machine comes in at 10,900 kg (24,030 lb) on a 5,774 mm x 2,275 mm footprint — about a meter longer than the standard-bed variants.

The FANUC control handles the extended Z travel without any programming differences. The box-way construction provides the rigidity needed for heavy cuts on long parts, and the programmable tailstock is practically mandatory for shaft work at these lengths to prevent deflection.

The LA is the speed-oriented long-bed option. If you're turning drive shafts, pump shafts, hydraulic cylinders, or long rollers in steel and alloy, the 3,000 RPM ceiling keeps your surface speed up even as diameter drops on smaller features. For shops that need more chuck grip on the same long bed, the LB (15-inch) and LC (21-inch) variants sacrifice RPM for bigger jaws.

Full Specifications

Parameter	Value
Chuck Size	12 inch
Max Turning Diameter	550 mm
Max Turning Length	2124 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	3,000 RPM
Spindle Motor Power	35 kW (47 hp)
Spindle Torque	1,584 N-m (1,168 ft-lb)
Turret Stations	12
Machine Length	5,774 mm (227 in)
Machine Height	2,272 mm (89 in)
Machine Width	2,275 mm (90 in)
Machine Weight	10,900 kg (24,030 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

3,000 RPM max spindle speed is the highest in the PUMA 4100 family, maintaining surface speed on smaller-diameter features
2,124 mm (84 in) max turning length handles drive shafts, pump shafts, and long cylindrical components in a single setup
12-station turret gives 2 extra tool positions over the standard-bed 4100 models for complex multi-operation programs
47 hp spindle with 1,584 N-m torque balances speed and cutting power for versatile shaft turning work
Box-way construction provides rigidity for long, heavy workpiece turning where deflection control is critical
12-inch chuck is well-suited for bar feeding and medium-diameter chucking work

Limitations

12-inch chuck limits maximum workholding diameter compared to the 15-inch B and 21-inch C variants
1,584 N-m torque is lower than the B's 2,379 N-m — heavy roughing on large diameters may be torque-limited
5,774 mm machine length requires more floor space than the standard-bed variants
16/20 m/min rapids feel slow across the 2,155 mm Z travel — long positioning moves eat cycle time
10,900 kg weight means more involved installation and floor preparation than compact lathes

Best For

Shops turning long shafts, rollers, and cylindrical components up to 84 inches in length Pump and hydraulic cylinder manufacturers needing long Z travel with good spindle speed Drive shaft and axle makers in the automotive and heavy equipment sectors Bar feeding applications where 12-inch chuck capacity and 3,000 RPM speed matter General job shops that regularly handle long parts too big for the LYNX 2100 or PUMA 2600 platforms Facilities wanting the fastest spindle speed available on the PUMA 4100 long-bed platform

Frequently Asked Questions

01 Why does the PUMA 4100 LA have 12 turret stations instead of 10?

The long-bed 4100 variants (LA, LB, LC) have a slightly different turret geometry that accommodates 12 stations. The standard-bed B and C have 10. The extra two positions are welcome on long-part programs that often need more tools for different diameter zones along the workpiece length.

02 How does the 4100 LA compare to the 4100 LB?

Same bed, same Z travel, same power. The LA has a 12-inch chuck with 3,000 RPM and 1,584 N-m. The LB has a 15-inch chuck with 2,000 RPM and 2,379 N-m. The LA favors speed and bar work; the LB favors bigger parts and heavier cuts. The LB has 10 turret stations vs the LA's 12.

03 What tailstock options are available?

A programmable hydraulic tailstock is the standard option for long-bed 4100 variants. It's practically essential at these turning lengths to prevent workpiece deflection. Most configurations include it as standard rather than an option. Quill travel and live/dead center options vary by build.

04 Can the PUMA 4100 LA handle steady rest work?

Yes, the long bed accommodates steady rests for supporting long, slender workpieces at intermediate points. This is important for shaft work where length-to-diameter ratios exceed 10:1 and tailstock support alone isn't sufficient to prevent chatter and deflection.