TOS Kuřim SKJ 50

Q: How much does the TOS Kuřim SKJ 50 cost?

The price estimate for the TOS Kuřim SKJ 50 is uncertain: we have no price for it that we can cite and no estimate we can stand behind, so we give no figure. Configuration, tooling, automation and installation move the final price substantially. A specific price can be requested at https://machinetoolindex.com/machines/tos-kurim-skj-50#price; the request is passed to TOS Kuřim or an authorised dealer.

Specs verified 2026-10-04 · tos-kurim.cz Updated 2026-10-04

Image: tos-kurim.cz, TOS Kuřim

Key Specifications

clamping plate diameter

5,000 mm (196.9 in)

max turning diameter

10,000 mm (393.7 in)

machining height

3,000 - 5,000 mm (118.1 - 196.9 in)

max workpiece weight

80,000/100,000 kg (176,367/220,459 lb)

clamping plate speed

100 - 50 rpm

x axis travel

4,000 mm (157.5 in)

How much does the TOS Kuřim SKJ 50 cost?

Price estimate

Uncertain

We do not have a price for the TOS Kuřim SKJ 50 that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.

Overview

The TOS Kuřim SKJ 50 is a movable-column vertical lathe that machines diameters up to 10,000 mm (393.7 in) on a clamping plate of only 5,000 mm (196.9 in). The ratio is the point of the SKJ design. The machining diameter is twice the plate.

A frame-type vertical lathe can turn nothing wider than the opening between its columns. The SKJ gets round that by standing the column to one side and letting it travel, 2,000 mm (78.7 in) on this model, so the tool can be carried out to a radius far beyond the plate edge. Large thin rings, which need diameter but weigh comparatively little, are the natural work. Workpiece weight is 80,000/100,000 kg (176,367/220,459 lb).

Machining height is 3,000 - 5,000 mm (118.1 - 196.9 in), with a cross-rail stroke of 2,000 - 3,500 mm (78.7 - 137.8 in) and a ram extension of 2,000/2,500 mm (78.7/98.4 in). Support travel in X is 4,000 mm (157.5 in). The ram section is 340 x 340 mm (13.4 x 13.4 in) and the cutting force 100 kN. The X and Z axes run on sliding guideways.

The plate turns at 100 - 50 rpm, the fastest of the three SKJ sizes. In the maker's list the series is a modular, multifunctional design with milling and grinding function, an optional ram with a built-in milling spindle, and automatic exchange of tool holders and milling heads.

Full Specifications

Parameter	Value
Clamping Plate Diameter	5,000 mm (196.9 in)
Max Turning Diameter	10,000 mm (393.7 in)
Machining Height	3,000 - 5,000 mm (118.1 - 196.9 in)
Max Workpiece Weight	80,000/100,000 kg (176,367/220,459 lb)
Clamping Plate Speed	100 - 50 rpm
X Axis Travel	4,000 mm (157.5 in)
Column Travel	2,000 mm (78.7 in)
Z Axis Travel Ram	2,000/2,500 mm (78.7/98.4 in)
W Axis Travel Cross Rail	2,000 - 3,500 mm (78.7 - 137.8 in)
Ram Cross Section	340 x 340 mm (13.4 x 13.4 in)
Cutting Force	100 kN
X Z Axis Guideways	sliding

Specifications sourced from tos-kurim.cz — verified 2026-10-04

Strengths & Limitations

Strengths

Machining diameter of 10,000 mm (393.7 in) on a 5,000 mm (196.9 in) plate
Plate speed of 100 - 50 rpm, the highest in the SKJ table
Cutting force of 100 kN on a 340 x 340 mm ram
Automatic exchange of tool holders and milling heads
Machining height of 3,000 - 5,000 mm (118.1 - 196.9 in)

Limitations

Workpiece weight of 80,000/100,000 kg is the lowest in the series; the SKJ 63 carries 150,000 kg (330,688 lb)
Sliding guideways only on X and Z, with no hydrostatic option listed for the SKJ
A 10,000 mm part on a 5,000 mm plate overhangs widely, and the catalogue does not describe the support arrangement
Column travel is 2,000 mm (78.7 in), half that of the SKJ 80 at 4,000 mm (157.5 in)

Best For

Large-diameter, relatively light rings up to 10,000 mm (393.7 in) Parts within 80,000/100,000 kg (176,367/220,459 lb) Ring work needing some milling or grinding in the same clamping

Frequently Asked Questions

01 How can the SKJ 50 machine 10,000 mm on a 5,000 mm plate?

Its column is movable. The table lists a column travel of 2,000 mm (78.7 in) next to the X travel of 4,000 mm (157.5 in), so the tool can be set at radii outside the plate. The workpiece then extends past the clamping plate, and how it is supported there should be discussed with the maker.

02 What weight can the SKJ 50 carry?

The workpiece weight row reads 80,000/100,000 kg (176,367/220,459 lb), two alternatives the catalogue does not explain further. The series feature list mentions sturdy tables for loads up to 320 tons, which is the figure for the largest size and not this one.

03 How tall a part fits the SKJ 50?

Machining height is 3,000 - 5,000 mm (118.1 - 196.9 in). The cross-rail strokes 2,000 - 3,500 mm (78.7 - 137.8 in) in W and the ram extends 2,000/2,500 mm (78.7/98.4 in) in Z.

04 What is the difference between the SKJ 50 and the SKJ 63?

The plate and what it carries. The SKJ 63 has a 6,300 mm (248.0 in) plate, takes 150,000 kg (330,688 lb) and turns at 40 rpm. Machining diameter, height, travels, ram and cutting force are identical in the two columns.