DN Solutions PUMA 5100 LMB

$260,000 - $340,000 Updated 2026-03-19

Key Specifications

Spindle Power

45 kW (60 hp)

Max Turn Length

2002 mm

chuck size

21 inch

max turning diameter

650 mm

x axis travel

362 mm (14 in)

z axis travel

2,155 mm (85 in)

Overview

The DN Solutions PUMA 5100 LMB is the heaviest hitter in the long-bed 5100 range. It pairs a 21-inch chuck with a 45 kW (60 hp) spindle producing 2,958 Nm (2,182 ft-lb) of torque — numbers that put it firmly in the heavy-duty industrial turning class. If you're machining large castings, forgings, or weldments up to 650 mm (26 in) in diameter and 2,002 mm (79 in) in length, the LMB has the grip and the power to get it done.

The 21-inch chuck is the key differentiator over the LMA variant. When you're clamping a 500 mm diameter forging, the difference between a 15-inch and 21-inch chuck is the difference between marginal and secure grip. The bigger chuck distributes clamping force over more jaw contact area, reducing the chance of workpiece slip during heavy cuts.

The spindle runs to 1,500 RPM max, which delivers over 2,400 SFM at 650 mm diameter — more than adequate for carbide turning in steel and cast iron. The 45 kW motor is the most powerful in the 5100 series, giving you the headroom to maintain feed rates on large-diameter interrupted cuts where lesser machines would bog down.

Z-axis travel is 2,155 mm (85 in) with 362 mm (14 in) on X. The 12-station turret spins live tools at 4,000 RPM for secondary operations. Box-way construction and 12,200 kg (26,896 lb) of machine mass ensure rock-solid stability. The FANUC 0i-TF Plus control keeps things familiar for operators who've run any PUMA-series machine.

This is a specialized machine for heavy industry — power generation, oil and gas, mining, and large-scale manufacturing. It's not the kind of lathe you buy for a general job shop. But for the shops that need 21-inch chuck capacity with long-bed turning length and live tooling, there aren't many options that match the PUMA 5100 LMB's combination of torque, swing, and reliability. Specs sourced from DN Solutions published data.

Full Specifications

Parameter	Value
Chuck Size	21 inch
Max Turning Diameter	650 mm
Max Turning Length	2002 mm
X Axis Travel	362 mm (14 in)
Z Axis Travel	2,155 mm (85 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	45 kW (60 hp)
Spindle Torque	2,958 Nm (2,182 ft-lb)
Turret Stations	12-station turret
Rotary Tool Speed	4,000 RPM
Machine Weight	12,200 kg (26,896 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 provides maximum clamping force for large-diameter forgings and castings
2,958 Nm (2,182 ft-lb) is the highest torque in the PUMA 5100 series — it won't stall on aggressive cuts
45 kW (60 hp) spindle motor is the most powerful in the 5100 lineup, maintaining feed rates on heavy interrupted cuts
650 mm max turning diameter handles large flanges, valve bodies, and pump housings
Long-bed configuration gives 2,002 mm turning length for shaft and roller work
Box-way construction and 12,200 kg mass provide exceptional vibration damping

Limitations

1,500 RPM max spindle speed is limiting if you occasionally need to finish small-diameter features at high surface speed
21-inch chuck and large spindle nose add cost to workholding tooling and jaw sets
12,200 kg machine weight demands reinforced concrete foundations and professional rigging
Significant floor space requirement for the long-bed configuration
Not cost-effective for shops that don't regularly need 21-inch chuck capacity

Best For

Heavy industry turning of large castings, forgings, and weldments up to 26 inches in diameter Power generation component manufacturing — turbine shafts, generator housings, large rotor assemblies Oil and gas equipment production — BOP components, valve bodies, large-bore tubular work Mining equipment manufacturing — crusher components, large rollers, and heavy wear parts Shipbuilding and marine propulsion component machining Shops replacing older large-swing engine lathes with modern CNC capability

Frequently Asked Questions

01 Why does the LMB have more horsepower than the LMA?

The LMB's 21-inch chuck is designed for larger, heavier workpieces that create more cutting resistance. The 45 kW (60 hp) motor — versus 37 kW on the LMA — ensures the spindle maintains speed and torque during heavy cuts on these bigger parts. The extra power prevents the spindle from bogging down during aggressive roughing.

02 Is the PUMA 5100 LMB a box-way or linear guide machine?

Box-way construction throughout. At this size class, box ways are the standard choice for their superior vibration damping and rigidity during heavy cutting. The mass and damping characteristics of box ways make a measurable difference in surface finish and tool life on large-diameter work.

03 What automation options are available?

Given the size and weight of typical workpieces, gantry loaders and robot cells are the most common automation solutions. DN Solutions can integrate with major automation partners for part loading/unloading. Most shops at this machine size class use overhead cranes for manual loading.

04 Can I retrofit a Y-axis to the PUMA 5100 LMB?

The Y-axis isn't a retrofit option on the 5100 series — it needs to be specified at order time if available for this configuration. For off-center milling operations, the C-axis and live tooling can handle basic cross-drilling and flat milling using interpolation. Complex off-center features may still require a secondary VMC operation.