HTC6513D Horizontal Boring and Milling Center – 130 mm Spindle, 10,000 kg Table Capacity, and High Rigidity for Heavy-Duty Machining

A practical choice for large‑part machining

For job shops and OEMs that frequently process workpieces such as gearboxes, valve bodies, mold bases, and structural components, a reliable horizontal boring mill is essential. The HAIDI Machine HTC6513D is designed to meet these demands without unnecessary complexity or excessive cost. With a 130 mm spindle diameter, 2,500 N·m of torque, and a worktable that handles up to 10,000 kg, this machine delivers the cutting power and stability required for heavy‑duty operations.

Robust spindle and drive system

The spindle system is driven by a 30 kW AC servo motor with automatic two‑speed gear shifting, providing a speed range of 20–1,500 r/min. The spindle torque reaches 2,500 N·m, suitable for deep boring of steel and cast iron components. The maximum boring diameter is 240 mm, and the maximum drilling diameter is 50 mm (solid drilling). The spindle nose has a BT50 taper and is equipped with a disc spring clamping mechanism (hydraulic/pneumatic release) for reliable tool holding.

An important feature is the W‑axis (boring spindle extension), which travels up to 800 mm. This allows the machine to reach deep cavities without repositioning the workpiece – a significant advantage for large housings or mold bases with deep bores.

T‑type moving column structure with heavy‑duty guides

The HTC6513D adopts a T‑type moving column design: the worktable moves transversely along the front bed (X‑axis), the column moves longitudinally along the rear bed (Z‑axis), and the spindle head moves vertically along the column (Y‑axis). This configuration distributes cutting forces evenly and enhances overall rigidity.

All linear axes use 65 mm heavy‑duty roller linear guides:

• X‑axis (table cross travel): 3 guides with 10 slide blocks – travel 2,500 mm

• Y‑axis (head vertical travel): 4 guides (two front, two rear) with 10 slide blocks – travel 1,800 mm

• Z‑axis (column longitudinal travel): 2 guides with 6 slide blocks – travel 1,000 mm

Roller linear guides offer lower friction, better vibration damping, and no low‑speed stick‑slip compared to sliding guides. The use of 65 mm size guides – larger than typical for this class – significantly increases load capacity and cutting stability, especially during heavy interrupted cuts.

Ball screws and counterbalance

All feed axes are driven by 63×12 mm pre‑tensioned ball screws with double‑end fixed support, ensuring high transmission stiffness and long service life. The Y‑axis (spindle head) is equipped with a nitrogen counterbalance cylinder instead of traditional weights or hydraulic systems. This reduces the load on the Y‑axis motor and screw, improves dynamic response, and eliminates the risk of pressure loss found in hydraulic systems. The Y‑axis motor also has an automatic brake to prevent the head from dropping when power is off.

Worktable and rotary axis

The rotary table measures 2,000 mm × 1,800 mm with a maximum load capacity of 10,000 kg. The table can be indexed at any angle from 0 to 360° automatically, using a precision circular time‑grating encoder (similar to a high‑resolution rotary encoder). This provides accurate positioning for multi‑face machining operations such as drilling bolt circles on flanges or milling slots on different sides of a workpiece. A full circle of cylindrical roller bearings supports the table, giving good rotational smoothness and high rigidity.

Accuracy and real‑world performance

The HTC6513D offers positioning accuracy of 0.025 mm (X/Y), 0.020 mm (Z), and 0.018 mm (W) over full travel, with repeatability of 0.020 mm (X/Y/Z) and 0.015 mm (W). These figures place the machine in the middle‑to‑upper range of the 130‑class horizontal boring mill segment – more than adequate for the vast majority of general engineering, energy, and heavy transport applications. The machine is supplied with Siemens 828D CNC, supporting X/Y/Z/W/B five‑axis control and 4‑axis simultaneous interpolation.

Practical features for daily operation

• Coolant and chip management: The machine includes a high‑flow external coolant pump and two chain‑type chip conveyors (one on each side of the table) with chip carts, keeping the work area clean and reducing manual cleaning time.

• Thermal management: The spindle gearbox and spindle assembly have constant‑temperature cooling circuits, and the electrical cabinet is equipped with an air conditioner, ensuring stable operation even in warm shop environments.

• Hydraulic system: Provides table clamping and other auxiliary functions with reliable domestic components.

• Operator convenience: A desktop control station with a handwheel pendant makes setup and manual operation easy.

Cost‑effectiveness without cutting corners

The HTC6513D is priced significantly below comparable European or Japanese 130‑class boring mills, yet its specification – 65 mm roller guides, 63 mm ball screws, 30 kW spindle, 10‑ton table, and Siemens 828D – matches or exceeds many mid‑range offerings. By using proven, mature components (domestic high‑grade cast iron, well‑designed ribbed structures, and standard CNC platform) rather than exotic materials, HAIDI Machine delivers a machine that shop owners can afford and rely on for daily production.

➡️ To request full technical data, discuss your application, or ask for a budget quotation, click here to contact our sales engineering team.