HB Series | JTEKT Machinery North America

HB Series

The HB Series sets the standard in horizontal boring technology with a design built for stability, accuracy, and durability. Featuring a solid cast iron base, this machine delivers exceptional rigidity, ensuring smooth performance and long-term reliability even in the most demanding cutting environments. Its cylindrical roller guideways provide precise linear motion with outstanding load capacity, while the backlash-free B-axis design enhances positioning accuracy for critical machining applications.

At the heart of the HB Series is a robust quill spindle, engineered to deliver the stability required for heavy-duty cutting and large-part machining. A unique headstock counterbalance system ensures accuracy by reducing deflection, allowing operators to achieve consistent precision across a wide range of applications.

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HB cutting

Heavy-Duty Power & Performance

Accuracy and precision are built into the HB Series at every stage of design and manufacturing. WELE employs finite element analysis (FEA) to optimize casting strength and machine rigidity while minimizing thermal displacement. Cylindrical roller guideways, backlash-free axis systems, and hydrostatic B-axis bearings provide superior positioning accuracy and repeatability. Optional linear scales on the X, Y, and Z axes further boost precision for tight-tolerance machining.

Quality assurance is at the heart of WELE’s production philosophy. Every HB Series machine undergoes strict factory testing under real cutting conditions to verify accuracy, repeatability, and load-handling capability. In addition, automatic tool changers with large tool capacities, right-angle heads, universal milling attachments, and extended quill options allow the HB Series to handle complex part geometries and multi-face machining with ease. 


HB Series Spindle

High Speed Spindle & Table Features

The HB Series horizontal boring mills are engineered with a robust spindle and quill system designed for maximum stability, torque, and precision. With its advanced hydrostatic B-axis rotary table and backlash-eliminated design, the HB Series delivers exceptional accuracy for heavy-duty machining applications.

Spindle & Table Features

  • Quill Spindle Options
    • ø110 mm quill with 500 mm W-axis travel
    • ø130 mm quill with 700 mm W-axis travel
  • High-Torque Performance
    • Maximum torque: 1188 Nm
    • Spindle speed: up to 3,500 rpm (ø110) / 2,500 rpm (ø130)
  • B-Axis Rotary Table
    • Hydrostatic bearing system for ultra-heavy load capacity (up to 12 tons)
    • 360° continuous rotation with 0.001° incremental indexing

HB Series Exterior2

Trusted Structural Design & Innovation

The HB Series horizontal boring mills are engineered with a structural design that combines massive rigidity, advanced vibration control, and thermal stability—ensuring the highest levels of performance for heavy-duty and precision machining. At the foundation is a one-piece Meehanite® cast iron base that provides exceptional strength and stability, even under extreme cutting loads. Dual vertical columns and wide-span guideways support the moving components, minimizing deflection while maintaining accuracy across large work envelopes.

To further enhance stability, the HB Series integrates cylindrical roller guideways on the X, Y, and Z axes, which deliver smooth motion, reduced friction, and superior damping characteristics. The B-axis rotary table employs a hydrostatic bearing system, eliminating backlash while supporting workpieces weighing up to 12 tons. This structural approach not only guarantees load-bearing capacity but also provides the precision needed for complex multi-axis machining.


Models & Specifications

Table Size (W × L)in (mm)56.7 × 63 (1440 × 1600)
X-Axis Travelin (mm)78.7 (1999)
Y-Axis Travelin (mm)79.9 (2029)
Z-Axis Travelin (mm)51.2 (1300)
W-Axis Travelin (mm)19.7 (500)
Distance from Spindle Nose to Center of Rotary Tablein (mm)7.9 – 78.8 (201 – 2002)
Distance Between Table Top and Floorin (mm)46.8 (1189)
Maximum Table Loadlbs (kg)17600 (7990)
Spindle Speed MaxRPM3500
Tool TaperCAT50
Maximum Cutting Feedrateipm (m/min)197 (5)
Rapid Feedrate (X, Y, Z)ipm (m/min)590.6, 472.4, 590.6 (15, 12, 15)
Rapid Feedrate (W)ipm (m/min)196.8 (5)
Tool Storage CapacityTools40 (60, 90 Optional)
Tool Weight Maxlbs (kg)55 (25)
Standard Floor Space (W × L × H)in (mm)249 × 247.7 × 247.7 (6325 × 6292 × 6292)
Table Size (W × L)in (mm)63 × 78.7 (1600 × 1999)
X-Axis Travelin (mm)118 (2997)
Y-Axis Travelin (mm)82.6 (2098)
Z-Axis Travelin (mm)59.1 (1501)
W-Axis Travelin (mm)27.5 (699)
Distance from Spindle Nose to Center of Rotary Tablein (mm)3.14 – 89.7 (80 – 2278)
Distance Between Table Top and Floorin (mm)49.6 (1260)
Maximum Table Loadlbs (kg)44092 (20018)
Spindle Speed MaxRPM3500
Tool TaperCAT50
Maximum Cutting Feedrateipm (m/min)197 (5)
Rapid Feedrate (X, Y, Z)ipm (m/min)590.6, 472.4, 590.6 (15, 12, 15)
Rapid Feedrate (W)ipm (m/min)196.8 (5)
Tool Storage CapacityTools40 (60, 90 Optional)
Tool Weight Maxlbs (kg)55 (25)
Standard Floor Space (W × L × H)in (mm)306.9 × 266.6 × 178.5 (7795 × 6772 × 4534)