Hwacheon Horizontal Machining Centers (HMC)

Hwacheon AF-4

Specs verified 2026-10-03 · hwacheon.com Updated 2026-10-03

Image: hwacheon.com, Hwacheon

Key Specifications

Max Spindle

15,000 rpm / 20,000 rpm

Spindle Taper

ISO #40, 7/24 taper (BBT-40; opt. CAT-40, HSK-A63, SK-40)

Tool Capacity

40 (opt. 60)

Table Size

□400 mm (□15.7 in)

Spindle Power

15K: 37 / 22 kW (49.6 / 29.5 hp); 20K: 37 / 18.5 kW (49.6 / 24.8 hp)

x axis travel

565 mm (22.2 in)

How much does the Hwacheon AF-4 cost?

Price estimate

Uncertain

We do not have a price for the Hwacheon AF-4 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 AF-4 is a compact high-speed horizontal machining center with a □400 mm (□15.7 in) table, 565 x 645 x 645 mm (22.2 x 25.4 x 25.4 in) of X, Y and Z travel and a 40-taper spindle offered at 15,000 rpm or 20,000 rpm. Rapids are 60 m/min (2,362 ipm) on all three linear axes, and the table carries 400 kgf (882 lb).

The two spindles share a 37 kW (49.6 hp) peak rating but differ in continuous power and torque. The 15K spindle is rated 37 / 22 kW (49.6 / 29.5 hp) and 303 Nm (223 lb-ft); the 20K spindle 37 / 18.5 kW (49.6 / 24.8 hp) and 221 Nm (163 lb-ft). For steel and cast iron the 15K is the stronger choice, while the 20K suits aluminium and small cutters where speed matters more than torque. Both use a Ø70 mm (Ø2.8 in) bearing with oil-jet lubrication.

The taper is BBT-40 as standard, with CAT-40, HSK-A63 and SK-40 as options, so the machine can be matched to tooling a shop already owns. The magazine holds 40 tools, 60 as an option, with memory random selection and MAS P40T-1 (45°) pull studs. Tools can be Ø75 mm (Ø2.95 in) with adjacent pockets full, Ø170 mm (Ø6.69 in) with them empty, 430 mm (16.9 in) long and 8 kgf (18 lb). That weight limit is low, so heavy face mills and long boring bars need checking. The B axis rotates at 34 rpm.

The AF-4 is a small-part machine next to the AF-16, which has a 2,200 x 1,800 mm (86.6 x 70.9 in) table and a 3,000 rpm to 12,000 rpm 50-taper range for heavy work. The AF-4 occupies 4,288 x 2,702 mm (168.8 x 106.4 in), stands 2,674 mm (105.3 in) high, weighs 10,000 kgf (22,046 lb) and has a 960 L coolant tank. The control is a Fanuc 0i-MF Plus, with HARMONY as an option.

Full Specifications

Parameter	Value
X Axis Travel	565 mm (22.2 in)
Y Axis Travel	645 mm (25.4 in)
Z Axis Travel	645 mm (25.4 in)
Distance Pallet Center to Spindle Nose	80 ~ 725 mm (3.1 ~ 28.5 in)
Distance Pallet Top to Spindle Center	80 ~ 725 mm (3.1 ~ 28.5 in)
Table Size	□400 mm (□15.7 in)
Max Table Load	400 kgf (882 lb)
Max Spindle Speed	15,000 rpm / 20,000 rpm
Spindle Motor Power	15K: 37 / 22 kW (49.6 / 29.5 hp); 20K: 37 / 18.5 kW (49.6 / 24.8 hp)
Spindle Torque	15K: 303 Nm (223 lb-ft); 20K: 221 Nm (163 lb-ft)
Spindle Taper	ISO #40, 7/24 taper (BBT-40; opt. CAT-40, HSK-A63, SK-40)
Spindle Bearing Diameter	Ø70 mm (Ø2.8 in)
Spindle Lubrication Cooling	Oil-jet
Rapid Traverse Xyz	60 / 60 / 60 m/min (2,362 / 2,362 / 2,362 ipm)
Rapid Traverse B	34 rpm
Tool Capacity	40 (opt. 60)
Tool Selection	Memory random
Max Tool Diameter (full magazine)	Ø75 / Ø170 mm (Ø2.95 / Ø6.69 in) (adjacent pockets full / empty)
Max Tool Length	430 mm (16.9 in)
Max Tool Weight	8 kgf (18 lb)
Pull Stud	MAS P40T-1 (45°)
Coolant Tank Capacity	960 L
Machine Height	2,674 mm (105.3 in)
Machine Dimensions	4,288 x 2,702 mm (168.8 x 106.4 in) (L x W)
Machine Weight	10,000 kgf (22,046 lb)
CNC Control	Fanuc 0i-MF Plus (opt. HARMONY)

Specifications sourced from hwacheon.com — verified 2026-10-03

Strengths & Limitations

Strengths

15,000 rpm or 20,000 rpm spindle, both with a 37 kW (49.6 hp) peak rating
60 / 60 / 60 m/min (2,362 / 2,362 / 2,362 ipm) rapids on X, Y and Z
BBT-40 taper with CAT-40, HSK-A63 and SK-40 options
40-tool magazine with memory random selection, 60 optional
Compact footprint of 4,288 x 2,702 mm (168.8 x 106.4 in)

Limitations

Table load is 400 kgf (882 lb), which limits fixture and part weight
Tools are limited to 8 kgf (18 lb), low for heavy face mills and boring bars
The 20K spindle has 221 Nm (163 lb-ft) against 303 Nm (223 lb-ft) on the 15K, so it is weaker for heavy cuts
□400 mm (□15.7 in) table restricts the size of tombstones and multi-part fixtures

Best For

Small aluminium parts machined on several faces High-speed work with small cutters on the 20,000 rpm spindle Prismatic parts within 565 x 645 x 645 mm of travel Shops that already run HSK-A63, CAT-40 or SK-40 tooling

Frequently Asked Questions

01 Which AF-4 spindle should I choose, 15,000 or 20,000 rpm?

The 15K spindle gives 37 / 22 kW (49.6 / 29.5 hp) and 303 Nm (223 lb-ft), so it is the choice for steel, cast iron and larger cutters. The 20K gives 37 / 18.5 kW (49.6 / 24.8 hp) and 221 Nm (163 lb-ft) with the extra speed for aluminium and small tools.

02 What tool tapers can the AF-4 use?

The spindle is ISO #40 with a 7/24 taper, supplied as BBT-40. CAT-40, HSK-A63 and SK-40 are options. Pull studs on the standard spindle are MAS P40T-1 (45°).

03 How big a tool can the AF-4 magazine hold?

The magazine holds 40 tools as standard or 60 as an option. Tools can be Ø75 mm (Ø2.95 in) with adjacent pockets full, Ø170 mm (Ø6.69 in) with adjacent pockets empty, 430 mm (16.9 in) long and 8 kgf (18 lb).

04 How does the AF-4 compare with the AF-16?

They are at opposite ends of the size range. The AF-16 has a 2,200 x 1,800 mm (86.6 x 70.9 in) table, a BBT-50 taper, 3,000 / 8,000 / 12,000 rpm spindles and a 15,000 kgf (33,069 lb) table load. The AF-4 has a □400 mm table, a 40 taper, 15,000 or 20,000 rpm and 400 kgf (882 lb).