Hwacheon Hi-TECH 850BB/BB+
Image: hwacheon.com, Hwacheon
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
swing over bed
max turning diameter
standard turning diameter
How much does the Hwacheon Hi-TECH 850BB/BB+ cost?
Price estimate
We do not have a price for the Hwacheon Hi-TECH 850BB/BB+ 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 Hwacheon Hi-TECH 850BB/BB+ is the largest big-bore lathe in the Hi-TECH line, built around an A2-20 spindle nose. The BB passes Ø295 mm (Ø11.6 in) through a Ø300 mm (Ø11.8 in) bore at up to 1,000 rpm. The BB+ opens that to a Ø375 mm (Ø14.8 in) bore and Ø370 mm (Ø14.6 in) through-capacity, at up to 750 rpm. Both are driven by 45 / 37 kW (60.3 / 49.6 hp).
For tube and casing, the bore is what decides between this and the Hi-TECH 700BB/BB+, whose largest bore is Ø300 mm (Ø11.8 in) on its BB+ version. Here that figure is the starting point, and the BB+ goes to Ø375 mm (Ø14.8 in). The front spindle bearing grows with it, from Ø360 mm (Ø14.2 in) on the BB to Ø440 mm (Ø17.3 in) on the BB+. The 750 rpm ceiling of the BB+ is low for small diameters but is in keeping with large tube ends, where the cutting diameter, not the spindle, sets the surface speed.
Outside the spindle the machine follows the Hi-TECH 850: Ø1,050 mm (Ø41.3 in) swing, Ø920 mm (Ø36.2 in) turning diameter for lengths up to 385 mm (15.2 in), 485 mm (19.1 in) of X (430 mm (16.9 in) on the XL), and Z travel of 2,650 mm (104.3 in), 3,650 mm (143.7 in) or 5,250 mm (206.7 in) by bed. The table does not give a maximum turning length for the BB models. Rapids are 10 / 12 m/min (394 / 472 ipm) in X / Z.
No chuck is listed as standard; the option is a Ø630 mm (Ø24.8 in) air chuck. The control is a FANUC 0i-TF Plus with a FANUC 31i-B available. Weight is 22,000 to 23,500 kg (48,501 to 51,808 lb) on the standard bed and up to 30,000 to 33,700 kg (66,138 to 74,295 lb) on the XL.
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Bed | Ø1,050 mm (Ø41.3 in) |
| Max Turning Diameter | Ø920 mm (Ø36.2 in) for turning lengths up to 385 mm (15.2 in) |
| Standard Turning Diameter | Ø380 mm (Ø15.0 in) |
| Chuck Size | (Opt.) air chuck Ø630 mm (Ø24.8 in) |
| Spindle Nose | A2-20 |
| Max Spindle Speed | 1,000 rpm (BB) / 750 rpm (BB+) |
| Spindle Bore | Ø300 / Ø375 mm (Ø11.8 / Ø14.8 in) (BB / BB+) |
| Bar Capacity | Ø295 / Ø370 mm (Ø11.6 / Ø14.6 in) (BB / BB+) |
| Spindle Bearing Front ID | Ø360 / Ø440 mm (Ø14.2 / Ø17.3 in) (BB / BB+) |
| Spindle Motor Power | 45 / 37 kW (60.3 / 49.6 hp) |
| Turret Stations | 12 |
| Tool Shank Size | □32 mm × Ø80 mm boring bar |
| Turret Index Time | 0.3 sec/step |
| Rapid Traverse Rate | X / Z 10 / 12 m/min (394 / 472 ipm); L Z 10 m/min (394 ipm); XL Z 9 m/min (354 ipm); Y 10 m/min (394 ipm) (YMC) |
| X Axis Travel | 485 mm (19.1 in); XL 430 mm (16.9 in) |
| Y Axis Travel | 220 mm (8.7 in) (YMC) |
| Z Axis Travel | 2,650 mm (104.3 in); L 3,650 mm (143.7 in); XL 5,250 mm (206.7 in) |
| Tailstock Travel | 2,500 mm (98.4 in); L 3,500 mm (137.8 in); XL 4,800 mm (189.0 in) |
| Tailstock Cylinder Diameter | Ø160 mm (Ø6.3 in) |
| Tailstock Quill Travel | 150 mm (5.9 in) |
| Tailstock Quill Taper | MT #6 |
| Live Tool Motor | 11 / 7.5 kW (14.8 / 10.1 hp) (MC / YMC) |
| Live Tool Speed Max | 2,500 rpm (MC / YMC) |
| Live Tool Capacity | End mill Ø32 mm / ER 50 collet |
| C Axis Indexing | 0.0001° |
| Coolant Tank | 400 L (106 US gal); L 550 L (145 US gal); XL 700 L (185 US gal) |
| Power Requirement | 85 kVA |
| Machine Dimensions | 6,860 x 3,030 x 3,020 mm (270.1 x 119.3 x 118.9 in); L 7,860 mm (309.4 in) long; XL 9,760 x 3,180 mm (384.3 x 125.2 in); YMC 3,180 mm wide |
| Machine Weight | 22,000 to 23,500 kg (48,501 to 51,808 lb); L 25,000 to 26,500 kg (55,115 to 58,422 lb); XL 30,000 to 33,700 kg (66,138 to 74,295 lb) |
| CNC Control | FANUC 0i-TF Plus / (Opt.: FANUC 31i-B) |
Specifications sourced from hwacheon.com — verified 2026-10-03
Strengths & Limitations
Strengths
- BB+ spindle bore of Ø375 mm (Ø14.8 in) with Ø370 mm (Ø14.6 in) through-capacity
- BB version passes Ø295 mm (Ø11.6 in) at up to 1,000 rpm
- A2-20 nose with a Ø440 mm (Ø17.3 in) front bearing on the BB+
- Up to 5,250 mm (206.7 in) of Z travel on the XL bed
- Optional FANUC 31i-B control in place of the FANUC 0i-TF Plus
Limitations
- BB+ spindle is limited to 750 rpm, BB to 1,000 rpm
- No standard chuck; the Ø630 mm (Ø24.8 in) air chuck is an option
- Rapids of 10 / 12 m/min (394 / 472 ipm), with Z at 9 m/min (354 ipm) on the XL
- Maximum turning length is not stated for the BB models
- XL bed versions weigh up to 33,700 kg (74,295 lb)
Best For
Frequently Asked Questions
01
Bore and speed. The BB has a Ø300 mm (Ø11.8 in) bore, Ø295 mm (Ø11.6 in) through-capacity, a Ø360 mm (Ø14.2 in) front bearing and 1,000 rpm. The BB+ has a Ø375 mm (Ø14.8 in) bore, Ø370 mm (Ø14.6 in) through-capacity, a Ø440 mm (Ø17.3 in) front bearing and 750 rpm. Both use the A2-20 nose and 45 / 37 kW (60.3 / 49.6 hp).
02
The Hi-TECH 850 has a 24 in chuck on an A2-15 nose with a Ø185 mm (Ø7.3 in) bore and Ø164 mm (Ø6.5 in) bar capacity, and runs to 1,500 rpm. Swing, travels, rapids and turret are the same on both machines; the BB models trade speed for bore.
03
Yes. MC and YMC versions add driven tools with an 11 / 7.5 kW (14.8 / 10.1 hp) motor at up to 2,500 rpm, end mills up to Ø32 mm, ER 50 collets and C-axis indexing in 0.0001° steps. The YMC adds 220 mm (8.7 in) of Y travel at 10 m/min (394 ipm).
04
22,000 to 23,500 kg (48,501 to 51,808 lb) on the standard bed, 25,000 to 26,500 kg (55,115 to 58,422 lb) on the L and 30,000 to 33,700 kg (66,138 to 74,295 lb) on the XL. The standard machine is 6,860 x 3,030 x 3,020 mm (270.1 x 119.3 x 118.9 in) and the XL 9,760 x 3,180 mm (384.3 x 125.2 in). It needs an 85 kVA supply.
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