TOS Varnsdorf WRFQ 160

$2,000,000 - $4,500,000 Updated 2026-03-17

Key Specifications

X Travel

5,000 mm (196.9 in) standard (extendable to 25,000 mm)

Y Travel

3,500 mm (137.8 in)

Z Travel

1,600 mm (63 in)

Spindle Taper

ISO 50 / SK50

Rapid Traverse

4 m/min X, Y, Z

Spindle Power

60 kW (80.4 hp)

Overview

The TOS Varnsdorf WRFQ 160 is TOS Varnsdorf's heavy-duty floor-type CNC boring and milling center, featuring a 160 mm (6.3 in) diameter boring spindle — the largest in the TOS Varnsdorf floor-type range. The WRFQ 160 is built for the most demanding heavy industrial boring applications: machining very large, high-value castings and weldments in the energy, shipbuilding, defense, and heavy industrial equipment sectors where neither table-type machines nor smaller floor-type boring mills can provide the spindle diameter, power, or structural rigidity required.

The WRFQ designation identifies this as a floor-type machine (F) with a rotary Q-column head configuration. The 160 mm spindle is driven by a 60 kW (80.4 hp) main motor — the most powerful in the TOS Varnsdorf boring range — with spindle speeds from 3 to 1,600 RPM, reflecting the machine's focus on heavy roughing and semi-finishing of large steel, cast iron, and stainless steel workpieces. The W-axis quill provides 800 mm (31.5 in) of CNC-controlled axial stroke for deep-bore operations on large housings, vessel flanges, and cross-bored manifold castings.

The WRFQ 160's floor rail configuration can be supplied from 5,000 mm to 25,000 mm in X-axis travel, accommodating the longest workpieces encountered in large-scale industrial manufacturing — turbine runner casings, ship engine bedplates, rolling mill housings, and large press frames. The B-axis rotary column provides 360° face rotation in 0.001-degree increments for multi-face machining of very large stationary components. An angular milling head attachment — available as an option — extends the machine to full 5-axis positioning for complex angled features on large castings.

The WRFQ 160 is controlled via Siemens Sinumerik 840D sl, with Fanuc 30i-B as an alternative. It is the reference machine for the most demanding TOS Varnsdorf customer applications — nuclear power station component manufacturers, large marine diesel engine builders, rolling mill OEMs, and defense vehicle component producers. TOS Varnsdorf provides full foundation design support, installation supervision, and long-term service contracts for WRFQ 160 installations worldwide.

Full Specifications

Parameter	Value
Spindle Diameter	160 mm (6.3 in)
Spindle Speed Range	3 - 1,600 RPM
Spindle Motor Power	60 kW (80.4 hp)
Spindle Taper	ISO 50 / SK50
X-Axis Travel	5,000 mm (196.9 in) standard (extendable to 25,000 mm)
Y-Axis Travel	3,500 mm (137.8 in)
Z-Axis Travel	1,600 mm (63 in)
Quill Stroke W	800 mm (31.5 in)
B Axis Rotation	360° (column face rotation)
B Axis Resolution	0.001 degrees
Spindle Torque Max	18,000 Nm (13,277 ft-lb)
Floor Plate Area	Unlimited (workpiece on foundation/floor plate)
Positioning Accuracy	±0.012 mm
Repeatability	±0.006 mm
Rapid Traverse Rate	4 m/min X, Y, Z
Machine Weight Approx	85,000 kg (187,393 lb, standard configuration)
CNC Control	Siemens Sinumerik 840D sl (Fanuc 30i-B optional)
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Strengths & Limitations

Strengths

160 mm spindle diameter and 60 kW power provide the maximum rigidity and cutting torque in the TOS Varnsdorf range — enabling heavy roughing and semi-finishing of large steel and cast iron workpieces at diameters that smaller boring spindles cannot handle
800 mm W-axis quill stroke covers the deepest through-bore requirements on large castings, vessel flanges, and marine components without full column repositioning
Floor-rail X-axis extendable to 25,000 mm covers the longest workpieces produced in heavy industry — rolling mill housings, large ship engine bedplates, and synchronizer frames for major press lines
18,000 Nm maximum spindle torque enables productive boring of large-diameter bores in hard-to-machine alloy steels and heavy cast iron sections with minimal tool deflection
TOS Varnsdorf's full project support — foundation engineering, installation supervision, machine commissioning, and long-term service contracts — reduces customer risk on very high capital installations

Limitations

Capital cost of $2M–$4.5M places the WRFQ 160 in a class accessible only to large OEMs, heavy engineering firms, and government-backed defense and energy manufacturers with long-term high-value part programs
Foundation installation is a major civil engineering project — precision floor rails, reinforced concrete to specific depth specifications, and alignment infrastructure add 6–12 months to the pre-installation timeline
1,600 RPM maximum spindle speed limits surface footage for milling operations on the WRFQ 160 — for milling-dominated large-part applications, a traveling-column HMC or gantry milling machine may be more productive

Best For

Nuclear and conventional power generation equipment manufacturers machining very large turbine casings, reactor coolant pump housings, and generator stator frames requiring 160 mm spindle precision boring Marine and shipbuilding industry machining large diesel engine blocks, crankshaft bearing housings, ship propeller shaft bores, and stern tube flanges where workpiece weight exceeds 50,000 kg Heavy equipment and rolling mill OEMs machining mill housing bores, backup roll chock bores, slab caster components, and large press crown and bed structures requiring the longest floor rail configurations Defense and military vehicle manufacturers machining large transmission cases, naval propulsion gear housings, and heavy armored vehicle structures requiring the full combination of spindle diameter, quill reach, and multi-face boring capability

Frequently Asked Questions

01 What makes the WRFQ 160 different from the WRDQ 130?

The WRFQ 160 has a 160 mm spindle diameter versus 130 mm on the WRDQ 130 — a 23% larger spindle providing proportionally greater rigidity and torque (18,000 Nm versus approximately 10,000 Nm on the 130). The WRFQ 160 also has a larger Y-axis (3,500 mm versus 2,500 mm), larger Z-axis (1,600 mm versus 1,200 mm), and a longer standard and maximum X-axis rail configuration. The WRFQ 160 targets the largest and heaviest workpieces in heavy industry; the WRDQ 130 serves the large-but-not-extreme range that dominates most energy and heavy engineering applications.

02 How is the WRFQ 160 installed and commissioned?

WRFQ 160 installation begins with civil engineering: TOS Varnsdorf provides foundation drawings specifying rail anchor positions, concrete depth, vibration isolation requirements, and crane access dimensions. The concrete foundation cures for 4–8 weeks before machine delivery. Installation involves craning the column, bed sections, and spindle head into position, followed by precision laser alignment of the floor rails and column geometry. Commissioning involves geometric accuracy verification per ISO 230 standards. Total installation and commissioning time is typically 8–16 weeks, depending on rail length and foundation complexity.

03 What boring diameters can the WRFQ 160 practically achieve?

With the W-axis quill and standard boring bar and facing slide tooling, the WRFQ 160 can bore diameters from approximately 50 mm (2 in) with small boring heads up to 2,000 mm (78.7 in) or larger with extended facing slides and outboard boring bar support. The most common production boring diameters on WRFQ-class machines range from 200 mm to 1,200 mm — large main bearing bores, turbine runner bore fits, and ship propeller shaft bores. Extremely large diameters require outboard boring support for the bar and are verified case-by-case with TOS Varnsdorf's applications engineers.

04 Does the WRFQ 160 support simultaneous 5-axis machining?

The standard WRFQ 160 provides 5-axis positioning (not continuous simultaneous interpolation) through the B-axis column rotation combined with the linear X, Y, Z, and W axes. For simultaneous 5-axis contouring on complex surfaces, TOS Varnsdorf offers an angular milling head attachment that adds the A-axis tilt function — enabling the Sinumerik 840D sl to perform continuous 5-axis interpolation for angled face milling, complex contour boring, and helical milling on large-part geometry. This is specified as an option at order time.

05 What service and parts support does TOS Varnsdorf provide for the WRFQ 160?

TOS Varnsdorf provides multi-year service contracts for WRFQ 160 installations, including scheduled preventive maintenance visits, remote diagnostics via the Sinumerik control telemetry interface, and priority spare parts supply. The company maintains a spare parts inventory in Varnsdorf for all current and recent machine generations. For international customers, TOS Varnsdorf partners with regional service agents for on-site response — particularly in India, China, and Turkey where WRFQ-class machine installations are concentrated. Geometric accuracy recertification per ISO 230 is available as a service at defined intervals.