DN Solutions DBD 1270

$1,200,000 - $1,800,000 Updated 2026-03-19

Key Specifications

Max Spindle

3,000 RPM

Spindle Taper

ISO 50

Table Size

7,000 x 1,250 mm (276 x 49 in)

Rapid Traverse

12 m/min (472 in/min)

Spindle Power

26 kW (35 hp)

x axis travel

7,000 mm (276 in)

Overview

The DN Solutions DBD 1270 is a duplex (double-ended) horizontal boring mill designed for one specific job: machining both ends of long, symmetrical workpieces simultaneously. It's got twin opposed spindles that bore from each side at the same time, cutting cycle times roughly in half compared to single-spindle boring mills that require the part to be flipped or repositioned.

The numbers on this machine are massive. The X-axis spans 7,000 mm to accommodate long workpieces, with 1,500 mm of Y-travel and 1,000 mm of Z per spindle. Each spindle runs ISO 50 taper at 3,000 RPM with 26 kW of power and 1,986 Nm of torque — serious boring muscle. The 7,000 x 1,250 mm table handles workpieces up to 10,000 kg, and rapids hit 12 m/min across all axes.

Duplex boring mills aren't common machines. Most shops don't need one. But for manufacturers producing crankshaft housings, long hydraulic cylinder bodies, axle housings, or any component where both ends need precision-bored holes that must be concentric, the DBD 1270 eliminates the alignment headache of machining one end, flipping the part, and trying to pick up the centerline again. The twin-spindle approach guarantees concentricity because both bores reference from the same setup. At 58,000 kg and nearly 20 meters long, this machine needs its own section of the shop — it's a purpose-built production solution, not a general-purpose boring mill.

Full Specifications

Parameter	Value
X Axis Travel	7,000 mm (276 in)
Y Axis Travel	1,500 mm (59 in)
Z Axis Travel	1,000 mm (39 in)
Max Spindle Speed	3,000 RPM
Spindle Motor Power	26 kW (35 hp)
Spindle Torque	1,986 Nm (1,464 ft-lb)
Spindle Taper	ISO 50
Table Size	7,000 x 1,250 mm (276 x 49 in)
Table Load Capacity	10,000 kg (22,046 lb)
Rapid Traverse Rate	12 m/min (472 in/min)
Machine Length	19,100 mm (752 in)
Machine Height	4,000 mm (157 in)
Machine Width	10,400 mm (409 in)
Machine Weight	58,000 kg (127,868 lb)
X Axis Travel Distance	7000 mm
Y Axis Travel Distance	1500 mm
Z Axis Travel Distance	1000 mm
Metric	IMPERIAL
Travels	X-Axis Travel DistanceY-Axis Travel DistanceZ-Axis Travel Distance
Feed Rates	X-Axis Rapid TraverseY-Axis Rapid TraverseZ-Axis Rapid Traverse
Main Spindle	Max. Spindle SpeedMax. Spindle PowerMax. Spindle TorqueTool Taper
Table	Table LengthTable WidthMaximum Workpiece weight
Dimensions	LengthHeightWidthWeight
Favorites	DBD 1580

Specifications sourced from dn-solutions.com — verified 2026-03-28

Strengths & Limitations

Strengths

Twin opposed spindles machine both ends simultaneously, cutting cycle times nearly in half on symmetrical workpieces
Guaranteed bore concentricity from a single setup eliminates the alignment risk of repositioning long parts
7,000 mm X-travel handles extremely long workpieces like axle housings, hydraulic cylinders, and crankshaft blocks
1,986 Nm of torque per spindle provides serious boring power for large-diameter holes in steel and cast iron
10,000 kg table capacity supports heavy industrial components without deflection
Bi-directional machining capability maximizes productivity on production runs

Limitations

Purpose-built for symmetrical, double-ended work — limited versatility for general boring operations
19-meter machine length demands a dedicated section of the shop floor with substantial foundation work
58,000 kg weight requires heavy-duty rigging and foundation engineering during installation
Higher acquisition cost than single-spindle boring mills, justified only by production volume on suitable parts

Best For

Automotive and heavy equipment manufacturers boring both ends of axle housings, transmission cases, and crankshaft blocks Hydraulic cylinder manufacturers needing concentric bores on both ends of long cylinder bodies Mining and construction equipment producers machining long structural housings with dual-end boring requirements High-volume production shops where simultaneous dual-spindle boring delivers measurable cycle time savings Any manufacturer producing long, symmetrical parts where bore concentricity between both ends is critical

Frequently Asked Questions

01 What does the DN Solutions DBD 1270 cost?

New DBD 1270 duplex boring mills typically run $1,200,000-$1,800,000 depending on configuration and accessories. These are specialized production machines, so pricing reflects the twin-spindle capability and the massive working envelope. Used duplex boring mills are rare on the secondary market.

02 What's the difference between the DBD 1270 and DBD 1580?

The DBD 1580 is the larger model with 8,000 mm X-travel (vs 7,000 mm), 2,000 mm Y-travel (vs 1,500 mm), and a 150 mm spindle bore versus the 1270's 127 mm. The 1580 weighs 86,000 kg versus 58,000 kg. Choose the 1580 for larger workpieces and heavier boring cuts.

03 What types of parts are best suited for a duplex boring mill?

Any long, symmetrical part where both ends need precision-bored holes that must be concentric: axle housings, hydraulic cylinder bodies, transmission cases, crankshaft blocks, large pipe fittings, and structural housings. The duplex design guarantees concentricity because both bores are machined from the same setup reference.

04 Can the DBD 1270 operate as a single-spindle boring mill?

Yes, each spindle can operate independently, so you can run single-spindle operations when needed. However, the machine's layout and pricing are optimized for simultaneous dual-spindle work, so it's most cost-effective when used for its intended dual-boring purpose.