You Ji YB55

Q: How much does the You Ji YB55 cost?

The price estimate for the You Ji YB55 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/you-ji-yb55#price; the request is passed to You Ji or an authorised dealer.

Specs verified 2026-10-04 · image.youji.com Updated 2026-10-04

You Ji YB55 CNC horizontal turning lathe (YB series)

Image: image.youji.com, You Ji

Key Specifications

Max Spindle

1-1,000 rpm (Ø152 mm bore), 1-400 rpm (Ø356 mm bore), 1-250 rpm (Ø508 mm bore), 3 steps

Spindle Power

37/45 kW (49.6/60.3 hp)

Max Turn Length

3,000/4,000/5,000/6,000/7,000/8,000 mm (118.1/157.5/196.9/236.2/275.6/315.0 in)

max swing over cross slide

Ø800 mm (31.5 in)

max swing over bed

Ø1,400 mm (55.1 in)

max turning diameter over cross slide

Ø800 mm (31.5 in)

How much does the You Ji YB55 cost?

Price estimate

Uncertain

We do not have a price for the You Ji YB55 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 You Ji YB55 is a CNC flat bed horizontal turning lathe with Ø1,400 mm (55.1 in) of swing over the bed and bed lengths for 3,000 to 8,000 mm (118.1 to 315.0 in) of turning length. It is a machine for long, heavy work: rolls, propeller shafts, drill pipe and cylinder barrels.

Two diameters matter on a flat bed. Over the bed the YB55 turns Ø1,100 mm (43.3 in). Over the cross slide, where a long shaft actually runs, the limit is Ø800 mm (31.5 in). A flange at the chuck end can use the larger figure; the body of the part has to clear the smaller one.

The headstock is chosen by bore. With the Ø152 mm (6 in) bore the spindle runs 1-1,000 rpm on an A2-15 nose. The Ø356 mm (14 in) bore brings 1-400 rpm and an A2-20 nose, and the Ø508 mm (20 in) bore 1-250 rpm on a Ø600 nose. All three use 3 speed steps and a 37/45 kW (49.6/60.3 hp) motor.

You Ji's model key then adds the tooling: an H8 hydraulic turret (H or HL), a V4 hydraulic turret (V or VL), both together (HV), a BMT power turret (HLC), or a Y-axis cross slide with a Capto power turret (YC). Six bed lengths are listed in one-metre steps, and machine length runs from 9,380 mm (369.3 in) to 14,380 mm (566.1 in) at a constant 4,000 mm (157.5 in) width. The tailstock quill travels 250 mm (9.8 in).

Full Specifications

Parameter	Value
Max Turning Length	3,000/4,000/5,000/6,000/7,000/8,000 mm (118.1/157.5/196.9/236.2/275.6/315.0 in)
Max Swing Over Cross Slide	Ø800 mm (31.5 in)
Max Swing Over Bed	Ø1,400 mm (55.1 in)
Max Turning Diameter Over Cross Slide	Ø800 mm (31.5 in)
Max Turning Diameter Over Bed	Ø1,100 mm (43.3 in)
Spindle Motor Power	37/45 kW (49.6/60.3 hp)
Tailstock Quill Travel	250 mm (9.8 in)
Machine Length	9,380/10,380/11,380/12,380/13,380/14,380 mm (369.3/408.7/448.0/487.4/526.8/566.1 in)
Machine Width	4,000 mm (157.5 in)
Machine Height	2,950 mm (116.1 in)
Spindle Bore	Ø152 mm (6 in), Ø356 mm (14 in) or Ø508 mm (20 in)
Max Spindle Speed	1-1,000 rpm (Ø152 mm bore), 1-400 rpm (Ø356 mm bore), 1-250 rpm (Ø508 mm bore), 3 steps
Spindle Nose	A2-15 (Ø152 mm bore), A2-20 (Ø356 mm bore), Ø600 (Ø508 mm bore)

Specifications sourced from image.youji.com — verified 2026-10-04

Strengths & Limitations

Strengths

Six bed lengths from 3,000 to 8,000 mm (118.1 to 315.0 in) of turning length
Three spindle bores listed: Ø152 mm (6 in), Ø356 mm (14 in) and Ø508 mm (20 in)
Ø1,400 mm (55.1 in) swing over the bed for flanged ends and large chucks
Turret choices up to a Y-axis cross slide with a Capto power turret (YC)
37/45 kW (49.6/60.3 hp) spindle motor with 3 speed steps

Limitations

Turning diameter over the cross slide is Ø800 mm (31.5 in), well under the bed swing
The Ø508 mm (20 in) bore headstock is limited to 250 rpm
Machine length of 9,380 mm (369.3 in) for the shortest bed, 14,380 mm (566.1 in) for the longest
The table gives no weight between centres and no steady rest capacity

Best For

Long shafts and rolls up to 8,000 mm (315.0 in) Pipe and tube work through the Ø356 mm (14 in) or Ø508 mm (20 in) bore Shafts needing milled flats or keyways on the HLC or YC builds

Frequently Asked Questions

01 What does YB55 mean in You Ji's model key?

The number is the swing over the bed in inches: 55 stands for 1,400 mm. The rest of the designation adds the spindle bore, the turning length in six steps from 3,000 to 8,000 mm, and a letter code for the turret arrangement.

02 What diameter can the YB55 turn?

Ø1,100 mm (43.3 in) over the bed and Ø800 mm (31.5 in) over the cross slide. Swing is Ø1,400 mm (55.1 in) over the bed and Ø800 mm (31.5 in) over the cross slide. For a shaft that the carriage must pass along, plan on the cross slide figure.

03 Which spindle bores and speeds are available?

Three are in the table. Ø152 mm (6 in) bore: 1-1,000 rpm, A2-15 nose. Ø356 mm (14 in) bore: 1-400 rpm, A2-20 nose. Ø508 mm (20 in) bore: 1-250 rpm, Ø600 nose. Each has 3 speed steps. The model key also names a 32 in (813 mm) bore, for which the table prints no speed.

04 Which turrets can be fitted?

The key lists H and HL (H8 hydraulic turret), V and VL (V4 hydraulic turret), HV (H8 plus V4 hydraulic turrets), HLC (BMT power turret) and YC (Y-axis cross slide with a Capto power turret). The spec table is common to all of them.

05 How does the YB55 differ from the YB63?

Only in the diameters and the machine's cross-section. The YB63 swings Ø1,600 mm (63.0 in) over the bed and turns Ø1,000 mm (39.4 in) over the cross slide. Bed lengths, bores, speeds and the 37/45 kW (49.6/60.3 hp) motor are the same on both.